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/* (LOAD macros.ps) */
var arrayRemove = function (array, thing) {
    var i = 0;
    for (var x = null, _js_idx1 = 0; _js_idx1 < array.length; _js_idx1 += 1) {
        x = array[_js_idx1];
        if (x === thing) {
            array.splice(i, 1);
            return true;
        };
        ++i;
    };
    return null;
};

/* (DEFCLASS *EVENT NIL (TARGET VALUE)
             (SETF (@ THIS TARGET) TARGET
                   (@ THIS VALUE) VALUE)) */
function Event(target, value) {
    this.target = target;
    this.value = value;
    return this;
};
/* (DEFUN MAGIC (OPTIONS ARGS)
     (SETF (@ THIS _PARENTS) (ARRAY)
           (@ THIS _MEMBERS) (CREATE)
           (@ THIS _ACTIONS) (CREATE)
           (@ THIS _STORAGE) (ARRAY))
     (IF (AND OPTIONS (@ OPTIONS DEFAULTS))
         (FOR-IN (DEF (@ OPTIONS DEFAULTS))
                 ((@ THIS CREATE) DEF (GETPROP OPTIONS 'DEFAULTS DEF))))
     (FOR-IN (K OPTIONS) (SETF (GETPROP THIS K) (GETPROP OPTIONS K)))
     (SETF THIS.LENGTH 0)
     (SETF THIS._CURSOR 0)
     (SETF THIS._OPTIONS OPTIONS)
     (IF (@ THIS INIT)
         ((@ THIS INIT APPLY) THIS ARGS))
     THIS) */
function magic(options, args) {
    this._parents = [];
    this._members = {  };
    this._actions = {  };
    this._storage = [];
    if (options && options.defaults) {
        for (var def in options.defaults) {
            this.create(def, options.defaults[def]);
        };
    };
    for (var k in options) {
        this[k] = options[k];
    };
    this.length = 0;
    this._cursor = 0;
    this._options = options;
    if (this.init) {
        this.init.apply(this, args);
    };
    return this;
};
/* (DEFUN *MODEL (OPTIONS)
     (LET ((FUN (LAMBDA () ((@ MAGIC CALL) THIS OPTIONS ARGUMENTS))))
       (SETF (@ FUN PROTOTYPE) ((@ *OBJECT CREATE) (@ *MODEL PROTOTYPE)))
       (SETF (@ FUN PROTOTYPE CONSTRUCTOR) *MODEL)
       FUN)) */
function Model(options) {
    var fun = function () {
        return magic.call(this, options, arguments);
    };
    fun.prototype = Object.create(Model.prototype);
    fun.prototype.constructor = Model;
    return fun;
};
/* (DEFUN *MODELP (VALUE)
     (AND (= (TYPEOF VALUE) OBJECT) ((@ *ARRAY IS-ARRAY) (@ VALUE _STORAGE))
          ((@ *ARRAY IS-ARRAY) (@ VALUE _PARENTS)))) */
function Modelp(value) {
    return typeof value === 'object' && Array.isArray(value._storage) && Array.isArray(value._parents);
};
/* (DEFUN ADD-PARENT (CHILD PARENT NAME)
     (WHEN (*MODELP CHILD)
       (LET (ALREADY-CHILD)
         ((@ (@ CHILD _PARENTS) FOR-EACH)
          (LAMBDA (P) (SETF ALREADY-CHILD (OR ALREADY-CHILD (= PARENT P)))))
         (UNLESS ALREADY-CHILD
           ((@ CHILD _PARENTS PUSH) PARENT)
           (IF NAME
               ((@ PARENT ONCE) (+ CHANGE : NAME)
                (LAMBDA (E) ((@ CHILD _PARENTS REMOVE) (@ E TARGET))))
               ((@ PARENT ON) REMOVE
                (LAMBDA (E)
                  (IF (= E.TARGET CHILD)
                      ((@ CHILD _PARENTS REMOVE) (@ E TARGET)))))))))) */
function addParent(child, parent, name) {
    if (Modelp(child)) {
        var alreadyChild = null;
        child._parents.forEach(function (p) {
            return alreadyChild = alreadyChild || parent === p;
        });
        if (!alreadyChild) {
            child._parents.push(parent);
            if (name) {
                return parent.once('change' + ':' + name, function (e) {
                    return arrayRemove(child._parents, e.target);
                });
            } else {
                return parent.on('remove', function (e) {
                    return e.target === child ? arrayRemove(child._parents, e.target) : null;
                });
            };
        };
    };
};
/* (DEFMETHOD *MODEL COPY ()
     (LET* ((CLS (*MODEL THIS._OPTIONS)) (OBJ (NEW (CLS))))
       (FOR-IN (PROP THIS._MEMBERS) (OBJ.DESTROY PROP T)
               (LET ((THIS-PROP (GETPROP THIS '_MEMBERS PROP)))
                 (IF (*MODELP THIS-PROP)
                     (OBJ.CREATE PROP ((@ (GETPROP THIS '_MEMBERS PROP) COPY)))
                     (OBJ.CREATE PROP
                      (IF (OR ((@ *ARRAY IS-ARRAY) THIS-PROP)
                              (= (TYPEOF THIS-PROP) 'OBJECT))
                          ((@ *JSON* PARSE) ((@ *JSON* STRINGIFY) THIS-PROP))
                          THIS-PROP)))))
       (SETF (@ OBJ _ACTIONS) (CREATE))
       (FOR-IN (ACTION (@ THIS _ACTIONS))
               (LET ((OLD-ACTIONS (GETPROP THIS '_ACTIONS ACTION))
                     (NEW-ACTIONS (ARRAY)))
                 (DOLIST (OLD-ACTION OLD-ACTIONS)
                   (IF (= (@ OLD-ACTION SELF) THIS)
                       ((@ NEW-ACTIONS PUSH)
                        (CREATE MESSAGE (@ OLD-ACTION MESSAGE) FUN
                         (@ OLD-ACTION FUN) SELF OBJ))
                       ((@ NEW-ACTIONS PUSH)
                        (CREATE MESSAGE (@ OLD-ACTION MESSAGE) FUN
                         (@ OLD-ACTION FUN) SELF (@ OLD-ACTION SELF)))))
                 (SETF (GETPROP OBJ '_ACTIONS ACTION) NEW-ACTIONS)))
       (LET ((NEW-STORAGE
              (THIS.MAP
               (LAMBDA (E)
                 (IF (*MODELP E)
                     ((@ E COPY))
                     ((@ *JSON* PARSE) ((@ *JSON* STRINGIFY) E)))))))
         (OBJ.CLEAR T)
         ((@ NEW-STORAGE FOR-EACH) (LAMBDA (E) (OBJ.PUSH E T))))
       OBJ)) */
Model.prototype.copy = function () {
    var cls = Model(this._options);
    var obj = new cls();
    for (var prop in this._members) {
        obj.destroy(prop, true);
        var thisProp = this._members[prop];
        if (Modelp(thisProp)) {
            obj.create(prop, this._members[prop].copy());
        } else {
            obj.create(prop, Array.isArray(thisProp) || typeof thisProp === 'object' ? JSON.parse(JSON.stringify(thisProp)) : thisProp);
        };
    };
    obj._actions = {  };
    for (var action in this._actions) {
        var oldActions = this._actions[action];
        var newActions = [];
        for (var oldAction = null, _js_idx2 = 0; _js_idx2 < oldActions.length; _js_idx2 += 1) {
            oldAction = oldActions[_js_idx2];
            if (oldAction.self === this) {
                newActions.push({ 'message' : oldAction.message,
                                  'fun' : oldAction.fun,
                                  'self' : obj
                                });
            } else {
                newActions.push({ 'message' : oldAction.message,
                                  'fun' : oldAction.fun,
                                  'self' : oldAction.self
                                });
            };
        };
        obj._actions[action] = newActions;
    };
    var newStorage = this.map(function (e) {
        return Modelp(e) ? e.copy() : JSON.parse(JSON.stringify(e));
    });
    obj.clear(true);
    newStorage.forEach(function (e) {
        return obj.push(e, true);
    });
    return obj;
};
/* (DEFMETHOD *MODEL GET (NAME LOUD)
     (IF (NOT ((@ THIS _MEMBERS HAS-OWN-PROPERTY) NAME))
         (THROW
             (NEW
              (*ERROR
               (+ Attempt to get a property  NAME  that does not exist.)))))
     (WHEN LOUD (TRIGGER THIS GET THIS[NAME] (+ GET : NAME) THIS[NAME]))
     (GETPROP THIS '_MEMBERS NAME)) */
Model.prototype.get = function (name, loud) {
    if (!this._members.hasOwnProperty(name)) {
        throw new Error('Attempt to get a property ' + name + ' that does not exist.');
    };
    if (loud) {
        this.trigger('get', this[name]);
        this.trigger('get' + ':' + name, this[name]);
    };
    return this._members[name];
};
/* (DEFUN GETSET (NAME VALUE SILENT)
     (IF (= (@ ARGUMENTS LENGTH) 1)
         ((@ THIS GET) NAME)
         ((@ THIS SET) NAME VALUE SILENT))) */
function getset(name, value, silent) {
    return arguments.length === 1 ? this.get(name) : this.set(name, value, silent);
};
/* (DEFMETHOD *MODEL CREATE (NAME VALUE SILENT)
     (IF ((@ THIS _MEMBERS HAS-OWN-PROPERTY) NAME)
         (THROW
             (NEW
              (*ERROR
               (+ Attempt to create property  NAME  that already exists.)))))
     (SETF (GETPROP THIS '_MEMBERS NAME) VALUE
           (GETPROP THIS NAME) ((@ GETSET BIND) THIS NAME))
     (ADD-PARENT VALUE THIS NAME)
     (UNLESS SILENT (TRIGGER THIS CREATE VALUE (+ CREATE : NAME) VALUE))
     VALUE) */
Model.prototype.create = function (name, value, silent) {
    if (this._members.hasOwnProperty(name)) {
        throw new Error('Attempt to create property ' + name + ' that already exists.');
    };
    this._members[name] = value;
    this[name] = getset.bind(this, name);
    addParent(value, this, name);
    if (!silent) {
        this.trigger('create', value);
        this.trigger('create' + ':' + name, value);
    };
    return value;
};
/* (DEFMETHOD *MODEL SET (NAME VALUE SILENT)
     (IF (NOT ((@ THIS _MEMBERS HAS-OWN-PROPERTY) NAME))
         (THROW
             (NEW
              (*ERROR
               (+ Attempt to set a property  NAME  that does not exist.)))))
     (LET ((OLD-VALUE (GETPROP THIS '_MEMBERS NAME)))
       (SETF (GETPROP THIS '_MEMBERS NAME) VALUE)
       (UNLESS SILENT
         (TRIGGER THIS CHANGE OLD-VALUE (+ CHANGE : NAME) OLD-VALUE))
       (ADD-PARENT VALUE THIS NAME))
     VALUE) */
Model.prototype.set = function (name, value, silent) {
    if (!this._members.hasOwnProperty(name)) {
        throw new Error('Attempt to set a property ' + name + ' that does not exist.');
    };
    var oldValue = this._members[name];
    this._members[name] = value;
    if (!silent) {
        this.trigger('change', oldValue);
        this.trigger('change' + ':' + name, oldValue);
    };
    addParent(value, this, name);
    return value;
};
/* (DEFMETHOD *MODEL DESTROY (NAME)
     (LET ((VALUE (GETPROP THIS '_MEMBERS NAME)))
       (DELETE (GETPROP THIS '_MEMBERS NAME))
       (DELETE (GETPROP THIS '_ACTIONS (+ CHANGE : NAME)))
       (DELETE (GETPROP THIS NAME))
       (TRIGGER THIS DESTROY VALUE))) */
Model.prototype.destroy = function (name) {
    var value = this._members[name];
    delete this._members[name];
    delete this._actions['change' + ':' + name];
    delete this[name];
    return this.trigger('destroy', value);
};
/* (DEFMETHOD *MODEL TRIGGER (MESSAGE VALUE TARGET)
     (LET ((ACTIONS (GETPROP THIS '_ACTIONS MESSAGE)) TRIGGER-PARENTS)
       (IF ACTIONS
           (LET ((EVENT (NEW (*EVENT (OR TARGET THIS) VALUE)))
                 (TO-REMOVE (ARRAY)))
             (DOLIST (ACTION ACTIONS)
               (WHEN (= ((@ ACTION FUN CALL) (@ ACTION SELF) EVENT) T)
                 (SETF TRIGGER-PARENTS T))
               (IF (@ ACTION ONCE)
                   ((@ TO-REMOVE PUSH) ACTION)))
             (DOLIST (ACTION TO-REMOVE) ((@ ACTIONS REMOVE) ACTION)))
           (SETF TRIGGER-PARENTS T))
       (WHEN TRIGGER-PARENTS
         (DOLIST (PARENT (@ THIS _PARENTS))
           (UNLESS (= PARENT TARGET)
             ((@ THIS TRIGGER CALL) PARENT MESSAGE VALUE (OR TARGET THIS))))))) */
Model.prototype.trigger = function (message, value, target) {
    this.debug && console.log(message, value, target);
    var actions = this._actions[message];
    var triggerParents = null;
    message.hops = message.hops || 1;
    message.hops++;
    if(message.hops > 10) {
        console.error('px3: dropping message: ', message, value);
        return;
    }
    if (actions) {
        var event = new Event(target || this, value);
        var toRemove = [];
        for (var action = null, _js_idx2 = 0; _js_idx2 < actions.length; _js_idx2 += 1) {
            action = actions[_js_idx2];
            if (action.fun.call(action.self, event) === true) {
                triggerParents = true;
            };
            if (action.once) {
                toRemove.push(action);
            };
        };
        for (var action = null, _js_idx3 = 0; _js_idx3 < toRemove.length; _js_idx3 += 1) {
            action = toRemove[_js_idx3];
            arrayRemove(actions, action);
        };
    } else {
        triggerParents = true;
    };
    if (triggerParents) {
        for (var parent = null, _js_arrvar7 = this._parents, _js_idx6 = 0; _js_idx6 < _js_arrvar7.length; _js_idx6 += 1) {
            parent = _js_arrvar7[_js_idx6];
            if (parent !== target) {
                /* try { */
                    this.trigger.call(parent, message, value, target || this);
                /* } catch (e) { 
                    console.error("px3: trigger: trigger loop detected: " + message + ", " + value + ", " + target);
                } */
            };
        };
    };
};
/* (DEFMETHOD *MODEL ON (MESSAGE FUN SELF)
     (LET ((ACTION (CREATE MESSAGE MESSAGE FUN FUN SELF (OR SELF THIS))))
       (IF (NOT (GETPROP THIS '_ACTIONS MESSAGE))
           (SETF (GETPROP THIS '_ACTIONS MESSAGE) (ARRAY ACTION))
           ((GETPROP THIS '_ACTIONS MESSAGE 'PUSH) ACTION))
       ACTION)) */
Model.prototype.on = function (message, fun, self) {
    var action = { 'message' : message,
                   'fun' : fun,
                   'self' : self || this
                 };
    if (!this._actions[message]) {
        this._actions[message] = [action];
    } else {
        this._actions[message].push(action);
    };
    return action;
};
/* (DEFMETHOD *MODEL ONCE (MESSAGE FUN SELF)
     (LET ((ACTION (CREATE MESSAGE MESSAGE FUN FUN SELF (OR SELF THIS) ONCE T)))
       (IF (NOT (GETPROP THIS '_ACTIONS MESSAGE))
           (SETF (GETPROP THIS '_ACTIONS MESSAGE) (ARRAY ACTION))
           ((GETPROP THIS '_ACTIONS MESSAGE 'PUSH) ACTION))
       ACTION)) */
Model.prototype.once = function (message, fun, self) {
    var action = { 'message' : message,
                   'fun' : fun,
                   'self' : self || this,
                   'once' : true
                 };
    if (!this._actions[message]) {
        this._actions[message] = [action];
    } else {
        this._actions[message].push(action);
    };
    return action;
};
/* (DEFMETHOD *MODEL PUSH (OBJ SILENT)
     (IF (AND (@ THIS CONTAINS) (NOT (= (@ OBJ TYPE) (@ THIS CONTAINS))))
         (THROW
             (NEW
              (*ERROR
               (+ Attempt to push  (@ OBJ TYPE) into container for
                  (@ THIS CONTAINS))))))
     (ADD-PARENT OBJ THIS)
     ((@ THIS _STORAGE PUSH) OBJ)
     (SETF (@ THIS LENGTH) (@ THIS _STORAGE LENGTH))
     (UNLESS SILENT (TRIGGER THIS ADD OBJ MODIFIED (ARRAY OBJ)))
     OBJ) */
Model.prototype.push = function (obj, silent) {
    if (this.contains && obj.type !== this.contains) {
        throw new Error('Attempt to push ' + obj.type + 'into container for ' + this.contains);
    };
    addParent(obj, this);
    this._storage.push(obj);
    this.length = this._storage.length;
    if (!silent) {
        this.trigger('add', obj);
        this.trigger('modified', [obj]);
    };
    return obj;
};
/* (DEFMETHOD *MODEL ADD (OBJ SILENT)
     (IF (AND (@ THIS CONTAINS) (NOT (= (@ OBJ TYPE) (@ THIS CONTAINS))))
         (THROW
             (NEW
              (*ERROR
               (+ Attempt to push  (@ OBJ TYPE) into container for
                  (@ THIS CONTAINS))))))
     (WHEN (NOT ((@ THIS FIND) OBJ)) ((@ THIS PUSH) OBJ SILENT))
     OBJ) */
Model.prototype.add = function (obj, silent, allowDuplicates) {
    if (this.contains && obj.type !== this.contains) {
        throw new Error('Attempt to push ' + obj.type + 'into container for ' + this.contains);
    };
    if (allowDuplicates || !this.find(obj)) {
        this.push(obj, silent);
    };
    return obj;
};
/* (DEFMETHOD *MODEL INSERT-AT (I OBJ SILENT)
     ((@ (@ THIS _STORAGE) SPLICE) I 0 OBJ)
     (INCF THIS.LENGTH)
     (ADD-PARENT OBJ THIS)
     (UNLESS SILENT (TRIGGER THIS ADD OBJ MODIFIED (ARRAY OBJ)))
     OBJ) */
Model.prototype.insertAt = function (i, obj, silent) {
    this._storage.splice(i, 0, obj);
    ++this.length;
    addParent(obj, this);
    if (!silent) {
        this.trigger('add', obj);
        this.trigger('modified', [obj]);
    };
    return obj;
};
/* (DEFMETHOD *MODEL SWAP (I J SILENT)
     (LET ((A (THIS.AT I)) (B (THIS.AT J)))
       (SETF THIS._STORAGE[I] B
             THIS._STORAGE[J] A)
       (UNLESS SILENT (TRIGGER THIS MODIFIED (ARRAY A B)))
       T)) */
Model.prototype.swap = function (i, j, silent) {
    var a = this.at(i);
    var b = this.at(j);
    this._storage[i] = b;
    this._storage[j] = a;
    if (!silent) {
        this.trigger('modified', [a, b]);
    };
    return true;
};
/* (DEFMETHOD *MODEL REMOVE (OBJ SILENT)
     (LET ((RETVAL ((@ THIS _STORAGE REMOVE) OBJ)))
       (WHEN RETVAL
         (DECF (@ THIS LENGTH))
         (WHEN (*MODELP OBJ) ((@ OBJ _PARENTS REMOVE) THIS))
         (UNLESS SILENT (TRIGGER THIS REMOVE OBJ MODIFIED (ARRAY OBJ))))
       RETVAL)) */
Model.prototype.remove = function (obj, silent) {
    var retval = arrayRemove(this._storage, obj);
    if (retval) {
        --this.length;
        if (Modelp(obj)) {
            arrayRemove(obj._parents, this);
        };
        if (!silent) {
            this.trigger('remove', obj);
            this.trigger('modified', [obj]);
        };
    };
    return retval;
};
/* (DEFMETHOD *MODEL CLEAR (SILENT)
     (LET ((OLD-STORAGE (@ THIS _STORAGE)))
       (SETF (@ THIS _STORAGE) (ARRAY)
             (@ THIS LENGTH) 0)
       (DOLIST (THING OLD-STORAGE)
         (WHEN (*MODELP THING) ((@ THING _PARENTS REMOVE) THIS)))
       (UNLESS SILENT (TRIGGER THIS CLEAR THIS MODIFIED OLD-STORAGE)))) */
Model.prototype.clear = function (silent) {
    var oldStorage = this._storage;
    this._storage = [];
    this.length = 0;
    for (var thing = null, _js_idx8 = 0; _js_idx8 < oldStorage.length; _js_idx8 += 1) {
        thing = oldStorage[_js_idx8];
        if (Modelp(thing)) {
            arrayRemove(thing._parents, this);
        };
    };
    if (!silent) {
        this.trigger('clear', this);
        return this.trigger('modified', oldStorage);
    };
};
/* (DEFMETHOD *MODEL AT (INDEX)
     (WHEN (>= INDEX (@ THIS LENGTH))
       (THROW
           (NEW
            (*ERROR
             (+ attempt to index ( INDEX ) out of range of object (
                (@ THIS LENGTH) ))))))
     (AREF (@ THIS _STORAGE) INDEX)) */
Model.prototype.at = function (index) {
    if (index >= this.length) {
        throw new Error('attempt to index (' + index + ') out of range of object (' + this.length + ')');
    };
    return this._storage[index];
};
/* (DEFMETHOD *MODEL CURRENT (OBJORNUMBER SILENT)
     (IF (NOT (= OBJORNUMBER UNDEFINED))
         (LET ((PREV-VALUE (THIS.AT THIS._CURRENT)) RETVAL)
           (SETF RETVAL
                   (IF (= (TYPEOF OBJORNUMBER) object)
                       (THIS.AT
                        (SETF THIS._CURRENT ((@ THIS INDEX-OF) OBJORNUMBER)))
                       (THIS.AT (SETF THIS._CURRENT OBJORNUMBER))))
           (UNLESS SILENT
             (TRIGGER THIS CHANGE PREV-VALUE change:current PREV-VALUE))
           RETVAL)
         (THIS.AT THIS._CURRENT))) */
Model.prototype.current = function (objornumber, silent) {
    if (objornumber !== undefined) {
        var prevValue = this.at(this._current);
        var retval = null;
        retval = typeof objornumber === 'object' ? this.at(this._current = this.indexOf(objornumber)) : this.at(this._current = objornumber);
        if (!silent) {
            this.trigger('change', prevValue);
            this.trigger('change:current', prevValue);
        };
        return retval;
    } else {
        return this.at(this._current);
    };
};
/* (DEFMETHOD *MODEL START (SILENT) ((@ THIS CURRENT) 0 SILENT)) */
Model.prototype.start = function (silent) {
    return this.current(0, silent);
};
/* (DEFMETHOD *MODEL END (SILENT) ((@ THIS CURRENT) (1- THIS.LENGTH) SILENT)) */
Model.prototype.end = function (silent) {
    return this.current(this.length - 1, silent);
};
/* (DEFMETHOD *MODEL NEXT (LOOP SILENT)
     (IF LOOP
         (THIS.CURRENT (REM (1+ THIS._CURRENT) THIS.LENGTH) SILENT)
         (IF (< THIS._CURRENT (- THIS.LENGTH 1))
             (THIS.CURRENT (1+ THIS._CURRENT) SILENT)
             UNDEFINED))) */
Model.prototype.next = function (loop, silent) {
    if (loop) {
        return this.current((this._current + 1) % this.length, silent);
    } else {
        return this._current < this.length - 1 ? this.current(this._current + 1, silent) : undefined;
    };
};
/* (DEFMETHOD *MODEL PREV (LOOP SILENT)
     (IF LOOP
         (IF (= THIS._CURRENT 0)
             (THIS.CURRENT (1- THIS.LENGTH) SILENT)
             (THIS.CURRENT (1- THIS._CURRENT) SILENT))
         (IF (> THIS._CURRENT 0)
             (THIS.CURRENT (1- THIS._CURRENT) SILENT)
             UNDEFINED))) */
Model.prototype.prev = function (loop, silent) {
    if (loop) {
        return this._current === 0 ? this.current(this.length - 1, silent) : this.current(this._current - 1, silent);
    } else {
        return this._current > 0 ? this.current(this._current - 1, silent) : undefined;
    };
};
/* (DEFMETHOD *MODEL INDEX-OF (OBJ)
     (LET ((I -1))
       (AND (THIS.FIND (LAMBDA (IT) (INCF I) (= IT OBJ))) I))) */
Model.prototype.indexOf = function (obj) {
    var i = -1;
    return this.find(function (it) {
        ++i;
        return it === obj;
    }) && i;
};
/* (DEFMETHOD *MODEL EACH (FUN SELF)
     (LET ((SELF (OR SELF THIS)))
       (DOLIST (ITEM (@ THIS _STORAGE)) ((@ FUN CALL) SELF ITEM)))) */
Model.prototype.each = function (fun, self) {
    var self9 = self || this;
    for (var item = null, _js_arrvar11 = this._storage, _js_idx10 = 0; _js_idx10 < _js_arrvar11.length; _js_idx10 += 1) {
        item = _js_arrvar11[_js_idx10];
        fun.call(self9, item);
    };
};
/* (DEFMETHOD *MODEL FOR-IN (FUN SELF)
     (LET ((SELF (OR SELF THIS)))
       (FOR-IN (K (@ THIS _MEMBERS))
               ((@ FUN CALL) SELF K (GETPROP THIS '_MEMBERS K))))) */
Model.prototype.forIn = function (fun, self) {
    var self12 = self || this;
    for (var k in this._members) {
        fun.call(self12, k, this._members[k]);
    };
};
/* (DEFMETHOD *MODEL MAP (FUN SELF)
     (LET ((RESULT 'NIL) (SELF (OR SELF THIS)))
       (DOLIST (ITEM (@ THIS _STORAGE))
         ((@ RESULT PUSH) ((@ FUN CALL) SELF ITEM)))
       RESULT)) */
Model.prototype.map = function (fun, self) {
    var result = [];
    var self13 = self || this;
    for (var item = null, _js_arrvar15 = this._storage, _js_idx14 = 0; _js_idx14 < _js_arrvar15.length; _js_idx14 += 1) {
        item = _js_arrvar15[_js_idx14];
        result.push(fun.call(self13, item));
    };
    return result;
};
/* (DEFMETHOD *MODEL FILTER (FUN SELF)
     (LET ((RESULT 'NIL) (SELF (OR SELF THIS)))
       (DOLIST (ITEM (@ THIS _STORAGE))
         (WHEN ((@ FUN CALL) SELF ITEM) ((@ RESULT PUSH) ITEM)))
       RESULT)) */
Model.prototype.filter = function (fun, self) {
    var result = [];
    var self16 = self || this;
    for (var item = null, _js_arrvar18 = this._storage, _js_idx17 = 0; _js_idx17 < _js_arrvar18.length; _js_idx17 += 1) {
        item = _js_arrvar18[_js_idx17];
        if (fun.call(self16, item)) {
            result.push(item);
        };
    };
    return result;
};
/* (DEFMETHOD *MODEL FIND (FUN-OR-OBJ SELF)
     (IF (= (TYPEOF FUN-OR-OBJ) FUNCTION)
         (DOLIST (ITEM (@ THIS _STORAGE))
           (WHEN ((@ FUN-OR-OBJ CALL) (OR SELF THIS) ITEM)
             (RETURN-FROM FIND ITEM)))
         (DOLIST (ITEM (@ THIS _STORAGE))
           (WHEN (= FUN-OR-OBJ ITEM) (RETURN-FROM FIND ITEM))))) */
Model.prototype.find = function (funOrObj, self) {
    if (typeof funOrObj === 'function') {
        for (var item = null, _js_arrvar22 = this._storage, _js_idx21 = 0; _js_idx21 < _js_arrvar22.length; _js_idx21 += 1) {
            item = _js_arrvar22[_js_idx21];
            if (funOrObj.call(self || this, item)) {
                return item;
            };
        };
    } else {
        for (var item = null, _js_arrvar24 = this._storage, _js_idx23 = 0; _js_idx23 < _js_arrvar24.length; _js_idx23 += 1) {
            item = _js_arrvar24[_js_idx23];
            if (funOrObj === item) {
                return item;
            };
        };
    };
};
/* (DEFMETHOD *MODEL SORT (FUN SILENT)
     ((@ THIS _STORAGE SORT) FUN)
     (UNLESS SILENT (TRIGGER THIS MODIFIED (@ THIS _STORAGE)))
     THIS) */
Model.prototype.sort = function (fun, silent) {
    this._storage.sort(fun);
    if (!silent) {
        this.trigger('modified', this._storage);
    };
    return this;
};
/* (DEFMETHOD *MODEL SERIALIZE ()
     (LET* ((MEMBERS (CREATE)) STORAGE (ACTIONS (ARRAY)) (OPTIONS (CREATE)))
       (FOR-IN (PROP THIS._MEMBERS)
               (SETF (GETPROP MEMBERS PROP)
                       (LET ((THIS-PROP (GETPROP THIS '_MEMBERS PROP)))
                         (IF (*MODELP THIS-PROP)
                             ((@ (GETPROP THIS '_MEMBERS PROP) SERIALIZE))
                             (IF (OR ((@ *ARRAY IS-ARRAY) THIS-PROP)
                                     (= (TYPEOF THIS-PROP) 'OBJECT))
                                 ((@ *JSON* STRINGIFY)
                                  ((@ *JSON* STRINGIFY) THIS-PROP))
                                 THIS-PROP)))))
       (SETF STORAGE
               (THIS.MAP
                (LAMBDA (E)
                  (IF (*MODELP E)
                      ((@ E SERIALIZE))
                      E))))
       (FLET ((OPTION-SERIALIZE (THING)
                (IF (= (TYPEOF THING) function)
                    (ARRAY FUNCTION (+ var x =  ((@ THING TO-STRING)) ;x))
                    (IF (= (TYPEOF THING) object)
                        (LET ((OBJ (CREATE)))
                          (FOR-IN (KEY THING)
                                  (SETF (GETPROP OBJ KEY)
                                          (OPTION-SERIALIZE
                                           (GETPROP THING KEY))))
                          (ARRAY OBJECT OBJ))
                        (ARRAY OTHER THING)))))
         (FOR-IN (OPTION THIS._OPTIONS)
                 (SETF (GETPROP OPTIONS OPTION)
                         (LET ((THING (GETPROP THIS._OPTIONS OPTION)))
                           (OPTION-SERIALIZE THING)))))
       (FOR-IN (ACTION THIS._ACTIONS)
               (LET ((THING (GETPROP THIS._ACTIONS ACTION)))
                 (DOLIST (X THING)
                   ((@ ACTIONS PUSH)
                    (CREATE MESSAGE (@ X MESSAGE) FUN
                     (+ var x =  ((@ X FUN TO-STRING)) ;x) SELF
                     (IF (= (@ X SELF) THIS)
                         THIS
                         (IF (*MODELP X)
                             ((@ X SERIALIZE))
                             X))
                     ONCE (@ X ONCE))))))
       (CREATE MEMBERS MEMBERS STORAGE STORAGE ACTIONS ACTIONS OPTIONS
        OPTIONS))) */
Model.prototype.serialize = function () {
    var thisProp;
    var thing;
    var members = {  };
    var storage = null;
    var actions = [];
    var options = {  };
    for (var prop in this._members) {
        members[prop] = (thisProp = this._members[prop], Modelp(thisProp) ? this._members[prop].serialize() : (Array.isArray(thisProp) || typeof thisProp === 'object' ? JSON.stringify(JSON.stringify(thisProp)) : thisProp));
    };
    storage = this.map(function (e) {
        return Modelp(e) ? e.serialize() : e;
    });
    var optionSerialize = function (thing) {
        if (typeof thing === 'function') {
            return ['function', 'var x = ' + thing.toString() + ';x'];
        } else {
            if (typeof thing === 'object') {
                var obj = {  };
                for (var key in thing) {
                    obj[key] = optionSerialize(thing[key]);
                };
                return ['object', obj];
            } else {
                return ['other', thing];
            };
        };
    };
    for (var option in this._options) {
        options[option] = (thing = this._options[option], optionSerialize(thing));
    };
    for (var action in this._actions) {
        var thing25 = this._actions[action];
        for (var x = null, _js_idx26 = 0; _js_idx26 < thing25.length; _js_idx26 += 1) {
            x = thing25[_js_idx26];
            actions.push({ message : x.message,
                           fun : 'var x = ' + x.fun.toString() + ';x',
                           self : x.self === this ? 'this' : (Modelp(x) ? x.serialize() : x),
                           once : x.once
                         });
        };
    };
    return { members : members,
             storage : storage,
             actions : actions,
             options : options
           };
};
/* (DEFMETHOD *MODEL LOAD (OBJ LOAD-ACTIONS)
     (FLET ((SERIALIZEDP (OBJ)
              (NOT
               (OR (= OBJ.MEMBERS UNDEFINED) (= OBJ.STORAGE UNDEFINED)
                   (= OBJ.ACTIONS UNDEFINED) (= OBJ.OPTIONS UNDEFINED))))
            (DESERIALIZE-OPTIONS (OPTIONS)
              (FOR-IN (OPTION OPTIONS)
                      (LET ((THING (GETPROP OPTIONS OPTION)))
                        (SETF (GETPROP OPTIONS OPTION)
                                (CASE (AREF THING 0)
                                  (FUNCTION
                                   ((@ (EVAL (AREF THING 1)) BIND) THIS))
                                  (OBJECT
                                   (FOR-IN (KEY THING)
                                           (SETF (GETPROP THING KEY)
                                                   (DESERIALIZE-OPTIONS
                                                    (GETPROP THING KEY))))
                                   THING)
                                  (OTHER THING)))))
              OPTIONS))
       (LET ((MEMBERS (@ OBJ MEMBERS))
             (STORAGE (@ OBJ STORAGE))
             (ACTIONS (@ OBJ ACTIONS))
             (OPTIONS (DESERIALIZE-OPTIONS (@ OBJ OPTIONS))))
         (IF (SERIALIZEDP OBJ)
             (FOR-IN (MEMBER MEMBERS)
                     (LET ((THING (GETPROP MEMBERS MEMBER)))
                       (IF (SERIALIZEDP THING)
                           (LET* ((MODEL (NEW (NEW (*MODEL THING.OPTIONS))))
                                  (DESERIALIZED-THING ((@ MODEL LOAD) THING)))
                             (IF (GETPROP THIS MEMBER)
                                 ((GETPROP THIS MEMBER) DESERIALIZED-THING)
                                 ((@ THIS CREATE) MEMBER DESERIALIZED-THING)))
                           (IF (GETPROP THIS MEMBER)
                               ((GETPROP THIS MEMBER) THING)
                               ((@ THIS CREATE) MEMBER THING))))))
         (THIS.CLEAR)
         (DOLIST (THING STORAGE)
           (THIS.ADD
            (IF (SERIALIZEDP THING)
                (LET* ((MODEL (NEW (NEW (*MODEL THING.OPTIONS))))
                       (DESERIALIZED-THING ((@ MODEL LOAD) THING)))
                  DESERIALIZED-THING)
                THING)
            T))
         (WHEN LOAD-ACTIONS
           (DOLIST (ACTION ACTIONS)
             ((@ THIS ON) ACTION.MESSAGE
              ((@ (EVAL ACTION.FUN) BIND) (WHEN (= ACTION.THIS THIS) THIS))
              ACTION.ONCE)))
         THIS))) */
Model.prototype.load = function (obj, loadActions) {
    var model30;
    var deserializedThing31;
    var serializedp = function (obj) {
        return !(obj.members === undefined || obj.storage === undefined || obj.actions === undefined || obj.options === undefined);
    };
    var deserializeOptions = function (options) {
        for (var option in options) {
            with ({ thing : null }) {
                var thing = options[option];
                options[option] = (function () {
                    switch (thing[0]) {
                    case 'function':
                        return eval(thing[1]).bind(this);
                    case 'object':
                        for (var key in thing) {
                            thing[key] = deserializeOptions(thing[key]);
                        };
                        return thing;
                    case 'other':
                        return thing;
                    };
                })();
            };
        };
        return options;
    };
    var members25 = obj.members;
    var storage26 = obj.storage;
    var actions27 = obj.actions;
    var options28 = deserializeOptions(obj.options);
    if (serializedp(obj)) {
        for (var member in members25) {
            var thing = members25[member];
            if (serializedp(thing)) {
                var model = new (new Model(thing.options));
                var deserializedThing = model.load(thing);
                if (this[member]) {
                    this[member](deserializedThing);
                } else {
                    this.create(member, deserializedThing);
                };
            } else {
                if (this[member]) {
                    this[member](thing);
                } else {
                    this.create(member, thing);
                };
            };
        };
    };
    this.clear();
    for (var thing = null, _js_idx29 = 0; _js_idx29 < storage26.length; _js_idx29 += 1) {
        thing = storage26[_js_idx29];
        this.add(serializedp(thing) ? (model30 = new (new Model(thing.options)), (deserializedThing31 = model30.load(thing), deserializedThing31)) : thing, true);
    };
    if (loadActions) {
        for (var action = null, _js_idx30 = 0; _js_idx30 < actions27.length; _js_idx30 += 1) {
            action = actions27[_js_idx30];
            this.on(action.message, eval(action.fun).bind(action.this === 'this' ? this : null), action.once);
        };
    };
    return this;
};

Model.prototype.size = function(dims) {
    var size = 1;
    var pos = {};
    for(var dim in dims) {
        size = size * dims[dim];
        pos[dim] = 0;
    }
    this.clear(true);
    for(var i = 0; i < size; i++) {
        this._storage.push(this);
    }
    this.length = size;
    this.dims = dims;
    this.pos = pos;
    this.trigger('modified', this._storage);
};
Model.prototype.peek = function(pos) {
    pos = pos || this.pos;
    var offset = 0;
    for(var i in this.dims) {
        offset += pos[i]*this.dims[i];
    }
    this.pos = pos;
    return this.current(this.at(offset));
};
Model.prototype.poke = function(thing, pos) {
    pos = pos || this.pos;
    var offset = 0;
    for(var i in this.dims) {
        offset += pos[i]*this.dims[i];
    }
    this.remove(offset, true);
    this.insertAt(offset, thing, true);
    this.pos = pos;
    this.current(offset);
    return thing;
};

/* (DEFUN *VIEW (OPTIONS)
     (LET ((FUN
            (LAMBDA (MODEL)
              (SETF (@ THIS MODEL) MODEL
                    (@ THIS $EL) ($ <DIV>))
              (WHEN OPTIONS
                (WHEN (@ OPTIONS TAG-NAME)
                  (SETF (@ THIS $EL) ($ (+ < (@ OPTIONS TAG-NAME) >))))
                (WHEN (@ OPTIONS STYLE) ((@ THIS $EL CSS) (@ OPTIONS STYLE)))
                (WHEN (@ OPTIONS MODEL)
                  (SETF (GETPROP THIS (@ OPTIONS MODEL)) MODEL))
                ((@ THIS $EL ATTR) CLASS
                 (IF (AND (@ OPTIONS CLASS-NAME) (@ OPTIONS TYPE))
                     (IF (= ((@ (@ OPTIONS CLASS-NAME) INDEX-OF)  ) 0)
                         (+ (@ OPTIONS TYPE) (@ OPTIONS CLASS-NAME))
                         (@ OPTIONS CLASS-NAME))
                     (IF (@ OPTIONS CLASS-NAME)
                         (@ OPTIONS CLASS-NAME)
                         (@ OPTIONS TYPE))))
                (UNLESS (@ OPTIONS RENDER)
                  (IF (@ OPTIONS RENDER-AUGMENTED)
                      (SETF (@ THIS RENDER) (@ OPTIONS RENDER-AUGMENTED))
                      (SETF (@ THIS RENDER) (LAMBDA () (@ THIS $EL)))))
                (WHEN (@ OPTIONS RENDER)
                  (UNLESS (@ OPTIONS RENDER-AUGMENTED)
                    (PROGN
                     (SETF (@ THIS RENDER)
                             (LAMBDA ()
                               ((@ ((@ THIS $EL CHILDREN)) DETACH))
                               ((@ (@ OPTIONS ORIGINAL-RENDER) CALL) THIS)))
                     (SETF (@ OPTIONS RENDER-AUGMENTED) (@ THIS RENDER))
                     (SETF (@ OPTIONS ORIGINAL-RENDER) (@ OPTIONS RENDER))
                     (DELETE (@ OPTIONS RENDER)))))
                (UNLESS (@ OPTIONS INIT)
                  (IF (@ OPTIONS INIT-AUGMENTED)
                      (SETF (@ THIS INIT) (@ OPTIONS INIT-AUGMENTED))
                      (SETF (@ THIS INIT) (LAMBDA () (THIS.RENDER)))))
                (WHEN (@ OPTIONS INIT)
                  (UNLESS (@ OPTIONS INIT-AUGMENTED)
                    (PROGN
                     (SETF (@ THIS INIT)
                             (LAMBDA ()
                               ((@ (@ OPTIONS ORIGINAL-INIT) APPLY) THIS
                                ARGUMENTS)
                               ((@ THIS RENDER))))
                     (SETF (@ OPTIONS INIT-AUGMENTED) (@ THIS INIT))
                     (SETF (@ OPTIONS ORIGINAL-INIT) (@ OPTIONS INIT))
                     (DELETE (@ OPTIONS INIT)))))
                (WHEN (@ OPTIONS EVENTS)
                  (FOR-IN (EVENT (@ OPTIONS EVENTS))
                          ((@ THIS $EL ON) EVENT
                           ((GETPROP OPTIONS 'EVENTS EVENT 'BIND) THIS))))
                ((@ MAGIC CALL) THIS OPTIONS ARGUMENTS)
                THIS))))
       (SETF (@ FUN PROTOTYPE) ((@ *OBJECT CREATE) (@ *MODEL PROTOTYPE)))
       (SETF (@ FUN PROTOTYPE CONSTRUCTOR) *VIEW)
       FUN)) */
function View(options) {
    var fun = function (model) {
        this.model = model;
        this.$el = $('<div>');
        if (options) {
            if (options.tagName) {
                this.$el = $('<' + options.tagName + '>');
            };
            if (options.style) {
                this.$el.css(options.style);
            };
            if (options.model) {
                this[options.model] = model;
            };
            this.$el.attr('class', options.className && options.type ? (options.className.indexOf(' ') === 0 ? options.type + options.className : options.className) : (options.className ? options.className : options.type));
            if (!options.render) {
                if (options.renderAugmented) {
                    this.render = options.renderAugmented;
                } else {
                    this.render = function () {
                        return this.$el;
                    };
                };
            };
            if (options.render) {
                if (!options.renderAugmented) {
                    this.render = function () {
                        this.$el.children().detach();
                        return options.originalRender.call(this);
                    };
                    options.renderAugmented = this.render;
                    options.originalRender = options.render;
                    delete options.render;
                };
            };
            if (!options.init) {
                if (options.initAugmented) {
                    this.init = options.initAugmented;
                } else {
                    this.init = function () {
                        return this.render();
                    };
                };
            };
            if (options.init) {
                if (!options.initAugmented) {
                    this.init = function () {
                        options.originalInit.apply(this, arguments);
                        return this.render();
                    };
                    options.initAugmented = this.init;
                    options.originalInit = options.init;
                    delete options.init;
                };
            };
            if (options.events) {
                for (var event in options.events) {
                    this.$el.on(event, options.events[event].bind(this));
                };
            };
            magic.call(this, options, arguments);
            return this;
        };
    };
    fun.prototype = Object.create(Model.prototype);
    fun.prototype.constructor = View;
    return fun;
};

/* (EXPORT *MODEL *VIEW) */
if (typeof module !== 'undefined') {
    module.exports.Model = Model;
};
if (typeof module !== 'undefined') {
    module.exports.View = View;
};
if (typeof require !== 'undefined') {
    Model = require('./px2').Model;
}

function extend (target, source) {
  target = target || {};
  for (var prop in source) {
    if (typeof source[prop] === 'object') {
      target[prop] = extend(target[prop], source[prop]);
    } else {
      target[prop] = source[prop];
    }
  }
  return target;
}

var Sigil = new Model({
    type: "Lisp",
    init: function (options) {
        options = options || {};
        
        this.reset();
        
        options.core && this.loadCore(options.core);
    },
    
    reset: function (env, fenv) {
        var _fenv = {
            // TODO: don't bind the ones that don't need this
            'atom': this.batom.bind(this),
            'null': this.bnull.bind(this),
            'set': this.bset.bind(this),
            'car': this.bcar.bind(this),
            'cdr': this.bcdr.bind(this),
            'eq': this.beq.bind(this),
            'cons': this.bcons.bind(this),
            '+': this.bplus.bind(this),
            '-': this.bminus.bind(this),
            '*': this.btimes.bind(this),
            '/': this.bdivide.bind(this),
            '%': this.bmod.bind(this),
            'apply': this.bapply.bind(this),
            'eval': this.beval.bind(this),
            'call': this.bcall.bind(this),
            'env': this.benv.bind(this),
            'fenv': this.bfenv.bind(this),
            '=>': this.bmagic.bind(this),
            'split': this.bsplit.bind(this),
        };
        
        var _env = {
            't': 't'
        }; 


        env = extend(_env, env);
        fenv = extend(_fenv, fenv);
        console.log(_env, _fenv, env, fenv);
        this.env = env;
        this.fenv = fenv;
    },

    bmagic: function (args) {
        var retval = eval(args[0]);
        if(retval !== undefined)
            return retval;
        else
            return "";
    },

    _null: function(e) {
        //return (e === undefined || (Array.isArray(e) && e.length === 0)) && 't' || [];
        return (Array.isArray(e) && e.length === 0) && 't' || [];
    },

    each: function(l, f) {
        if(this._null(l) !== 't') {
            if(l.length === 3) {
                f(l[0], true);
                this.each(l.slice(1), f);
            } else {
                f(l[0]);
                if(!(typeof l === "string" || typeof l === "number"))
                    this.each(this.cdr(l), f);
                else
                    f(l, true);
            }
        } else {
            f(l, true);
        }
    },

    beq: function(args) {
        var x = args[0];
        var y = args[1][0];
        return (x === y || (Array.isArray(x) && Array.isArray(y) &&
                            x.length === 0 && y.length === 0)) && 't' || [];
    },

    bcond: function(args) {
        while(this._null(args) !== 't') {
            var test = args[0][0];
            var body = args[0][1];
            var result = this.eval(test);
            
            this.debug && console.log('sigil: bcond: test, body, result: ', test, body, result);
            if(this._null(result) !== 't') {
                return this.progn(body);
            }
            args = args[1];
        }
        return [];
    },
    
    bnull: function(args) {
        return this._null(args[0]);
    },

    atom: function (e) {
        return (typeof e === 'string' ||
                typeof e === 'number' ||
                this._null(e) === 't') && 't' || []
    },
    
    batom: function(args) {
        return this.atom(args[0]);
    },
    
    bdivide: function(args) {
        var quotient = args[0];
        
        this.each(args[1], function (e, last) {
            if(this._null(e) !== 't') {
                quotient /= e;
            }
        }.bind(this));
        
        return quotient;
    },

    bmod: function(args) {
        var x = args[0];
        var y = args[1][0];

        return Math.floor(x) % Math.floor(y);
    },

    btimes: function(args) {
        var product = args[0];
        
        this.each(args[1], function (e, last) {
            if(this._null(e) !== 't') {
                product *= e;
            }
        }.bind(this));
        
        return product;
    },

    bminus: function(args) {
        var difference = args[0];
        
        this.each(args[1], function (e, last) {
            if(this._null(e) !== 't') {
                difference -= e;
            }
        }.bind(this));
        
        return difference;
    },
    
    bplus: function(args) {
        var sum = args[0];
        
        this.each(args[1], function (e, last) {
            if(this._null(e) !== 't') {
                sum += e;
            }
        }.bind(this));
        
        return sum;
    },

    car: function (x) {
        var isnotnull = this._null(x) !== 't';
        if(this.atom(x) === 't' && isnotnull) {
            throw new Error("attempt to take the car of a symbol or number");
        } else {
            if(!isnotnull) {
                return [];
            } else {
                return x[0];
            }
        }
    },

    bcar: function (args) {
        return this.car(args[0]);
    },

    cdr: function (x) {
        var isnotnull = this._null(x) !== 't';
        if(this.atom(x) === 't' && isnotnull) {
            throw new Error("attempt to take the cdr of a symbol or number");
        } else {
            if(!isnotnull) {
                return [];
            } else {
                return x[1];
            }
        }
    },

    bcdr: function (args) {
        return this.cdr(args[0]);
    },

    cons: function(x, y) {
        return [x, y];
    },
    
    bcons: function (args) {
        var car = args[0];
        var cdr = args[1][0];
        return [car, cdr];
    },

    bprogn: function (args) {
        return this.progn(args);
    },
    
    progn: function (args) {
        var result;
        while(args.length > 0) {
            result = this.eval(args[0]);
            args = args[1];
        }
        
        return result;
    },

    evlambda: function (fun, args) {
        var vars = fun[1][0];
        var saved = {}
        
        // save variables
        var flag;
        this.each(vars, function (e, last) {
            if(!last) {
                if(!flag) {
	            if(e !== '&rest' && e !== '&body' && this.env[e] !== undefined) {
	                saved[e] = this.env[e];
	            }
	            if(!Array.isArray(args[0]) && args[0] && args[0].values !== undefined) {
	                this.env[e] = args[0].values[0];
	            } else {
	                if(e === '&rest' || e === '&body') {
                            flag = true;
                            return;
	                } else
                            saved[e] = this.env[e];
		            this.env[e] = args[0];
	            }
                    args = args[1];
                } else {
                    saved[e] = this.env[e];
		    this.env[e] = args;
                }
            }
        }.bind(this));

        var oldSelf = this.fenv['self'];
        this.fenv['self'] = fun;

        var error;
        try {
            var result = this.progn(fun[1][1]);
        } catch(e) {
            error = e;
        }
        
        this.each(vars, function (e, last) {
            if(!last) {
	        if(saved[e] !== undefined) {
	            this.env[e] = saved[e];
	        } else {
                    delete this.env[e];
                }
            }
        }.bind(this));
        delete this.fenv['self']
        if(oldSelf)
            this.fenv['self'] = oldSelf;
        
        if(error)
            throw error;

        return result;
    },

    reverse: function(l) {
        var result = [];
        this.each(l, function (e, last) {
            if(last) {
                if(this._null(e) !== 't') {
                    if(this._null(result) !== 't') {
                        var result2 = result;
                        while(this._null(result2[1]) !== 't')
                            result2 = result2[1];
                        result2[1] = e;
                    } else {
                        result = e;
                    }
                }
            } else {
                result = [e, result];
            }
        }.bind(this));
        return result;
    },

    evlis: function(l) {
        var result = []
        this.each(l, function (x, last) {
            if(!last) {
	        var tmp = this.eval(x);
	        if(!Array.isArray(tmp) && tmp !== undefined && tmp.values !== undefined) {
	            tmp = tmp.values[0];
	        }
	        result = [tmp, result]
            }
        }.bind(this));
        return this.reverse(result);
    },

    beval: function(args) {
        var expr = args[0];
        return this.eval(expr);
    },

    bapply: function(args) {
        var fun = args[0];
        var args = args[1][0];
        return this.apply(fun, args);
    },
    
    apply: function(fun, args) {
        if(typeof fun === "string") {
	    var f = this.fenv[fun];
            /* This allows removal of funcall.  If function is not found
             * in the function environment, it is then looked up in the
             * normal environment.  Might reduce confusion for new
             * users? */
            if(f === undefined) {
                f = this.env[fun];
            }
            if(f)
                fun = f;
        } 
        
        if(Array.isArray(fun) && fun[0] === 'macro') {
            var x = this.evlambda(fun, args);
	    return this.eval(x);
        } else {
	    var args = this.evlis(args);
	    if(typeof fun === "function") {
	        return fun(args);
	    } else if(Array.isArray(fun) && fun[0] === 'lambda') {
                return this.evlambda(fun, args);
	    } else {
                throw new Error("undefined function: " + fun);
                return fun;
	    }
        }
        
        throw new Error("apply: " + fun + ": " + args);
    },

    bme: function(args) {
        var fun = args[0][0];
        var args = args[0][1];
        
        return this.evlambda(this.fenv[fun], args);
    },

    bset: function(args) {
        var v, retval;
        while(this._null(args) !== 't') {
            v = args[0];
            var expr = args[1][0];

            if(typeof v === "string") {
	        retval = this.env[v] = expr;
            } else
	        throw new Error("attempt to set non-symbol value: " + v);

            args = args[1][1];
        }

        return retval;
    },

    benv: function (args) {
        var e = args[0];
        if(e !== undefined) {
            var newenv = {};
            while(this._null(e) !== 't') {
                var o = e[0];
                var s = o[0];
                var v = o[1]
                newenv[s] = v;
                e = e[1];
            }
            this.env = newenv; // poof!
            return args[0];
        } else {
            var retval = [];
            for(i in this.env) {
                retval = this.cons(this.cons(i, this.env[i]), retval);
            }
            return this.reverse(retval);
        }
    },

    bfenv: function (args) {
        var e = args[0];
        if(e !== undefined) {
            var newenv = {};
            while(this._null(e) !== 't') {
                var o = e[0];
                var s = o[0];
                var v = o[1]
                newenv[s] = v;
                e = e[1];
            }
            this.fenv = newenv; // poof!
            return args[0];
        } else {
            var retval = [];
            for(i in this.fenv) {
                retval = this.cons(this.cons(i, this.fenv[i]), retval);
            }
            return this.reverse(retval);
        }
    },

    bsplit: function (args) {
        var s = args[0];
        var d = args[1][0] || '-';

        var retval = [];
        var v = s.split(d);
        for(var i in v) {
            var x = v[i];

            retval = [x, retval];
        }
        return this.reverse(retval);
    },

    bprint: function(args) {
        var expr = args;
        if(!Array.isArray(expr) && expr != undefined && expr.values !== undefined) {
            this.each(expr.values, function (e, last) {
                if(!last)
	            console.log(e);
	    }.bind(this));
        } else {
	    console.log(expr);
        }
    },

    /* xxx
    bsetf: function(args) {
        var type = args[0][0]
        var value = this.eval(args[1][0]);
        
        switch(type) {
        case 'symbol-function': {
            var place = args[0][1][0];
	    return this.fenv[place] = value;
        }
        default: {
            var place = args[0];
            return this.env[place[0]] = value;
        }
        }
    }, */

/* TODO: decide if want to remove */
    bcall: function(args) {
        var fun = args[0];
        var args = args[1];
        
        if(typeof fun === 'string')
            fun = this.env[fun];
        
        return this.apply(fun, args);
    },

    bvalues: function(args) {
        return { 'values': this.evlis(args) };
    },
    
    bbind: function(exprs) {
        var args = exprs[0];
        var values = this.eval(exprs[1][0]);
        var body = exprs[1][1];
        
        return this.apply(this.blambda([args, body]), values.values);
    },

    bdefmacro: function(expr) {
        var name = expr[0];
        var args = expr[1][0];
        var body = expr[1][1];
        
        var macro = [ 'macro', [ args, body ]];
        return this.fenv[name] = macro;
    },

    blambda: function (expr) {
        var args = expr[0];
        var body = expr[1];
        var lambda = [ 'lambda', [ args, body, []]];
        return lambda;
    },

    bquote: function(arg) {
        var result = [], dotted = false;
        if(Array.isArray(arg) && (arg[0] !== 'unquote' && arg[0] !== 'unquote-splice')) {
            this.each(arg, function(e, last) {
	        if(Array.isArray(e) && e[0] === 'unquote') {
	            result = [this.eval(e[1][0]), result];
	        } else if(Array.isArray(e) && e[0] === 'unquote-splice') {
                    var e2 = this.reverse(this.eval(e[1][0]));
                    var e3 = e2;
                    while(this._null(e3[1]) !== 't')
                        e3 = e3[1];
                    e3[1] = result;
                    result = e2;
	        } else if((e && e !== '' && e !== 0) && Array.isArray(e) && e.length) {
	            result = [this.bquote(e), result];
	        } else {
                    if(last && this._null(e) !== 't') {
                        if(result.length) {
                            result = this.reverse(result)
                            var result2 = result;
                            while(this._null(result2[1]) !== 't')
                                result2 = result2[1];
                            result2[1] = this.bquote(e);
                        } else {
                            result = e;
                        }
                        dotted = true;
                    } else {
                        if(e !== undefined)
                            result = [e, result];
                    }
                }
            }.bind(this));
            
            if(this._null(result[0]) === 't' && dotted) {
                return result[1];
            } else if (this._null(result[0]) === 't') {
                return this.reverse(result[1]);
            }  else
                return result;
        } else if(arg[0] === 'unquote') {
            return this.eval(arg[1][0]);
        } else if(arg[0] === 'unquote-splice') {
            return this.eval(arg[1][0]);
        } else
            return arg;
    },

    eval: function(expr) {
        if(Array.isArray(expr)) {
            if(expr.length === 0) {
                return []; // nil
            }
	    var car = expr[0];
	    var cdr = expr[1];
	    switch(car) {
	    case 'quote':
	        return this.bquote(cdr[0]);
	    case 'cond':
	        return this.bcond(cdr);
	    case 'lambda':
	        return this.blambda(cdr);
	    /* case 'setf':  xxx
	        return this.bsetf(cdr); */
	    case 'values':
	        return this.bvalues(cdr);
	    case 'bind':
	        return this.bbind(cdr);
	    /* case 'symbol-function': xxx
	        return this.fenv[this.eval(cdr[0])]; */
	    case 'defmacro':
	        return this.bdefmacro(cdr);
            case 'progn':
                return this.bprogn(cdr);
            case 'me':
                return this.bme(cdr);
	    default:
	        return this.apply(car, cdr);
	    }
        } else if(typeof expr === "number") {
            return expr;
        } else if(typeof expr === "string") {
            var v = this.env[expr];
            if(v === undefined)
                v = this.fenv[expr]
	    if(v === undefined) {
	        throw new Error("undefined symbol or function: " + expr);
	    }
	    return v;
        } else {
	    return expr;
        }
        
        throw new Error("eval error:" + expr);
    },

    readFromString: function(string) {
        if(!string.length) return;
        function terminator(c) {
	    return c === undefined ||
	        c === ' ' ||
	        c === '\n' ||
	        c === '\r' ||
	        c === '(' ||
	        c === ')';
        }

        function isNumberThing(c, i, l) {
            return c === '0' ||
	        c === '1' ||
	        c === '2' ||
	        c === '3' ||
	        c === '4' ||
	        c === '5' ||
	        c === '6' ||
	        c === '7' ||
	        c === '8' ||
	        c === '9' ||
	        (c === '-' && i === 0 && l > 1) ||
	        (c === '+' && i === 0 && l > 1) ||
	        c === '.'
        }

        function readBar (string) {
            var symbol = "";

            while(string[0] !== '|') {
                symbol += string[0];
                string.shift();
            }
            string.shift();
            return symbol;
        }

        function readThing (string) {
	    var number = "";
	    var isNumber = true;
            var i = 0;
	    while(!terminator(string[0])) {
	        isNumber &= isNumberThing(string[0], i, string.length);
	        number += string[0];
	        string.shift();
                i++;
	    }
            if(number[0] === '+' ||
               number[0] === '-' &&
               number.length === 1) {
                isNumber = false;
            }

	    if(isNumber)
	        return parseFloat(number);
	    else
	        return number;
        }

        var inBackquote = false;

        function readSexpr(string) {
	    while(string[0] != undefined) {
	        var c = string.shift();
	        switch(c) {
	        case ' ':
	        case '\n':
	        case '\t':
		    continue;

                case ';': {
                    var c;
                    do {
                        c = string.shift();
                    } while(c && (c !== '\r' && c !== '\n'));
                    continue;
                }

	        case '`': {
                    var oldInBackquote = inBackquote;
                    inBackquote = true;
                    var e = readSexpr.call(this, string);
		    var retval = [ 'quote', [ e, []]];
                    inBackquote = oldInBackquote;
                    return retval;
                }
                    
	        case ',':
                    if(!inBackquote)
                        throw new Error("comma not inside of backquote");

		    c = string.shift();
		    if(c == '@') {
                        var e = readSexpr.call(this, string);
                        if (this.batom([e]))
                            e = [ e, []];
		        return [ 'unquote-splice', e ];
		    } else {
		        string.unshift(c);
                        var e = readSexpr.call(this, string);
                        if (this.batom([e]))
                            e = [ e, []];
		        return [ 'unquote', e ];
		    }

                case '.':
                    return undefined;

	        case '(': {
		    var result = [];
                    var elt, c;

                    do {
                        elt = readSexpr.call(this, string);

                        if(elt === undefined) {
                            debugger
                            var elt2 = readSexpr.call(this, string);
                            var elt3 = readSexpr.call(this, string);
                            if(elt3 !== null) {
                                throw new Error("error in s-expression (missing close paren?)");
                            }
                            if(Array.isArray(elt2) && elt2[0] === 'unquote-splice') {
                                throw new Error("no splicing after a dot.");
                                
                            }
                            var result2 = this.reverse(result);
                            var result3 = result2;
                            while(this._null(result2[1]) !== 't')
                                result2 = result2[1];
                            result2[1] = elt2;
                            return result3;
                        } else {
                            if(elt || elt === 0 || elt === '')
                                result = [ elt, result ];
                        }
                    } while(elt || elt === 0 || elt === '');
                    
		    return this.reverse(result);
	        }

	        case ')':
		    return null;

                case '|':
                    return readBar(string);

	        default:
		    string.unshift(c); 
		    return readThing(string);
	        }
	    }

            if(string.length)
	        throw new Error("unterminated sexpr.");
        }

        return readSexpr.call(this, string.split(''));
    },

    exec: function (string) {
        var code = this.readFromString(string);
        this.add(extend(true, [], code));
        var result = this.eval(code);
        this.bset(['*', [ result, []]]);
        return this.printToString(result);
    },

    printToString: function(expr, ugly) {
        var pretty = !ugly;
        var retval;

        function removeParens(s) {
            s = s.slice(1);
            return s.slice(0, s.length-1);
        }

        if(this._null(expr) === 't') {
            retval = "()";
        } else if(Array.isArray(expr)) {
            retval = "(";
            var closeParens = ")";
            var special = false;
            while(this._null(expr) !== 't') {
                var val = expr[0];
                if(pretty && Array.isArray(val) && val[0] === "unquote") {
                    retval += ',' + removeParens(this.printToString(val[1])) + " ";
                    special = true;
                } else if(pretty && Array.isArray(val) && val[0] === "unquote-splice") {
                    retval += ',@' + removeParens(this.printToString(val[1])) + " ";
                    special = true;
                } else if(pretty && Array.isArray(val) && val[0] === "quote") {
                    retval += '`' + removeParens(this.printToString(val[1])) + " ";
                    special = true;
                } else if(this._null(val) !== 't') {
                    retval += this.printToString(val) + (pretty && " " || " . (");
                } 
                closeParens += ")";
                expr = expr[1];

                if(typeof expr === "string" || typeof expr === "number" || typeof expr === "function") {
                    retval += ". " + this.printToString(expr);
                    break;
                }
            }

            retval = retval + (pretty && ")" || closeParens);
        } else if(typeof expr === "object" && expr && expr.values) {
            for(var i in expr.values) {
                if(expr.values[i])
                    retval += this.printToString(expr.values[i]) + "<br/>";
            }
            
        } else { retval = expr } 
        
        return retval;
    },

    saveCore: function (path) {
        path = path || "/core";

        var core = JSON.stringify({ env: this.env, fenv: this.fenv });

        console.log('sigil: saveCore: ', core.length);
        this.debug && console.log('sigil: saveCore: ', core);

        localStorage.setItem(path, core);
        return true;
    },

    loadCore: function (path) {
        path = path || "/core";

        console.log("sigil: loadCore: Loading core:", path);
        var core = JSON.parse(localStorage.getItem(path));

        if(core)
            this.reset(core.env, core.fenv);
        return true;
    }
});

if(typeof module !== 'undefined') {
    module.exports = Sigil;
}

console.log("Lisp is available.");
var Styles = {
    Body: {
        margin: '0px',
        fontFamily: "monospace"
    },
    Window: {
        overflow: "auto",
        padding: ".25em",
        border: "2px solid grey",
        boxShadow: "2px 2px 2px grey",
        position: "absolute",
        background: "lightgrey"
    },
    TitleBar: {
        borderRadius: "4px 4px",
        border: "1px solid grey",
        background: "lightblue",
        marginBottom: ".25em",
        padding: ".25em"
    }
}
/* 

aswanson 7 hours ago

Paganistic druids without the priestly shroud, revealing all sources
of revelation to man, existence its barest form, for all to extend,
rewrite, and revise for the solitary path of revelation must bear
the unique fingerprint of the journeyman.

reply  

Source: https://news.ycombinator.com/item?id=11137855

*/

var WindowSystem = (function() {
    var log = function(message) {
        this.debug && console.log("WindowSystem: " + 
				  Date.now() + ": " + 
				  message);
    };
    var error = function(message) {
        console.error("WindowSystem: " + Date.now() + ": " + message);
    };

    var mergeOptions = function() {
        var retval = {};
        for(var i in arguments) {
            var x = arguments[i];
            for(var j in x) {
                if(typeof retval[j] === "object") {
                    retval[j] = mergeOptions(x[j], retval[j]);
                } else {
                    retval[j] = x[j];
                }
            }
        }
        return retval;
    };

    var Application = new Model({
        type: "Application",
        init: function(name, appView, options) {
            this.create('name', name);
            this.create('appView', appView);
            this.create('options', options || {});
        }
    });

    var Applications = new Model({
        type: "Applications",
        contains: "Application"
    });

    var WindowTitleView = new View({
        type: "WindowTitleView",
        model: "appView",
        style: Styles.WindowTitleView,
        init: function (model, options, parent) {
            this.create('parent', parent);
            this.maximized = false;
        },
        init: function(model, options) {
            this.$el.text(options.title || "Untitled");
        }
    });

    var WindowBodyView = new View({
        type: "WindowBodyView",
        model: "appView",
        style: Styles.WindowBodyView,
        render: function () {
            return this.$el.html(this.appView.$el);
        }
    });

    var WindowView = new View({
        type: "WindowView",
        model: "appView",
        style: Styles.WindowView,
        init: function(model, options, parent) {
            this.$el.html(this.appView.$el);
        }
    });
    
    var applications = new Applications();

    var EmptyWindowView = new View({
        type: "WindowSystem"
    });

    return new View({
        type: "WindowSystem",
        model: "options",
        contains: "Window",

        style: {
            position: "absolute"
        },

        events: {
            mousedown: function(e) {
                while(e.target && !e.target.app) {
                    e.target = e.target.parentNode;
                }
                if(e.which === 1) {
                    if(e.target) {
                        this.dragItem = e.target.app;
                        this.current(this.dragItem.parent);
                        this.dragItem.trigger('dragStart', e);
                        e.stopPropagation();
                    }
                } else if(e.which === 2) {
                    if(e.target.app && e.target.app.type === "TitleBar") {
                        this.remove(e.target.app.parent);
                        this.render();
                    }
                }
            },
            mousemove: function(e) {
                if(this.dragItem)
                    this.dragItem.trigger('drag', e);
                e.stopPropagation();
            },
            mouseup: function(e) {
                if(this.dragItem) {
                    this.dragItem.trigger('dragStop', e);
                    this.dragItem = null;
                    e.stopPropagation();
                }
            },
        },

        init: function (options, parent) {
            this.create('lisp', new Sigil({
                core: "/core"
            }));
            this.options = this.options || {}; // Hack
            this.create('options', this.options); // embed model
            this.create('parent', parent);
            this.create('app');

            /*
            this.create('cols', this.options().cols || 1);
            this.create('rows', this.options().rows || 1);
            this.create('layers', this.options().layers || 1);
            this.create('layer', 0);
            var dims = { x: this.cols(),
                         y: this.rows(),
                         z: this.layers()
                       };
            this.size(dims);
            */
            if(this.options().triggerHandlers) {
                for(var trigger in this.options().triggerHandlers) {
                    var handler = this.options().triggerHandlers[trigger];
                    this.on(trigger, handler);
                }
            }

            this.create('style');
            this.on('change:style', function (e) {
                this.$el.css(this.style());
            });
            this.style(this.options().style || {});
        },

        registerApplication: function (name, appView, options) {
            log("Registering Application: " + name);
            applications.add(new Application(name, appView, options));
        },

        getApplicationOptions: function(name) {
            var application = applications.find(function (e) {
                return e.name() === name;
            });
            if(application) {
                return application.options();
            }
        },

        runApplication: function (options) {
            var name = "window";
            var application = applications.find(function (e) {
                return e.name() === name;
            });
            if(application) {
                var placement =  this.options.windowPlacer && this.options.windowPlacer({
                    width: this.$el.width(),
                    height: this.$el.height()
                });
                var allOptions = mergeOptions(application.options(), options, { style: placement });
                var app = this.spawnApplication(this, options.daemon && "daemon" || "window", allOptions );
                app.$el.css(placement || {});
                this.add(app);
                this.trigger('createWindow', this);
                this.render();
                return app;
            } else {
                error("exec: Unregistered Application: " + name);
            }
        },

        spawnApplication: function(parent, application, options) {
            if(typeof application === "string") {
                application = applications.find(function(e) {
                    return e.name() === application;
                });
            }
            if(application) {
                log('Spawning: ' + application.name());
                var appView = application.appView();
                var app = new appView(options);
                app.$el[0].app = app;
                app.parent = parent;
                app.$el.css(application.options().style || {});
                app.$el.css(options.style || {});
                app.lisp = options.lisp || this.lisp();
                this.trigger('spawnApplication', app);
                return app;
            } else {
                error("spawn: Unregistered Application: " + name);
            }
        },

        render: function () {
            var html = this.map(function(e) { return e.$el; });
            this.trigger('render', html);
            return this.$el.html(html);
        },

        placeWindow: function (window, x, y) {
            window.$el.css({
                top: y,
                left: x
            });
            this.trigger('windowPlaced', window);
        },

        sizeWindow: function (window, w, h) {
            window.$el.css({
                width: w,
                height: h
            });
            this.trigger('windowSized', window);
        },

        keyPress: function(e) {
            if(this.current()) {
                this.current().trigger('keyPress', e);
            }
        },

        registryStore: function(path, data) {
            this.lisp().bset(path, this.lisp().printToString(data));
            this.lisp().saveCore();
        }
    });
})();

var WindowSystemDefaults = {
    rows: 1,
    cols: 1,
    layers: 1,

    style: {
        position: "absolute",
        top: "0px",
        left: "0px",
        width: "100%",
        height: "100%"
    },

    // TODO: Doesn't work yet, should return css { top: "...px", left:
    // "...px" ... } Requires work in main.js, maybe around merge
    // options to overlay these styles over top of the existing ones.
    windowPlacer: undefined, // function (area) { return {}; },

    triggerHandlers: {
        'runApplication': function(e) {
            this.runApplication(e.value);
        }, 
        'restore': function(e) {
            if(e.target.$el.oldPos) {
                e.target.$el.parent().css(e.target.$el.oldPos);
            }
            this.trigger('restored', e.target);
        },

        'maximize': function (e) {
            var parent = e.target.$el.parent();
            var pos = parent.position();
            pos.top = 0;
            pos.left = 0;
            pos.width = "100%";
            pos.height = "100%";
            pos.border = "0px";
            var oldPos = parent.position();
            oldPos.width = parent.css("width");
            oldPos.height = parent.css("height");
            oldPos.border = parent.css("border");
            e.target.$el.oldPos = oldPos;
            parent.css(pos);
            this.trigger('maximized', e.target);
        },

        'createWindow': function (e) {
            var window = e.value;
        },

        'spawnApplication': function (e) {
            var appView = e.value;
        },

        'render': function (e) {
            var html = e.value;
        },

        'maximized': function (e) {
            var windowTitleView = e.value;
        },

        'restored': function (e) {
            var windowTitleView = e.value;
        },

        'windowPlaced': function(e) {
            var window = e.value;
        },

        'windowSized': function(e) {
            var window = e.value;
        },

        'saveCore': function(e) {
            this.lisp().saveCore(e.value);
        },

        'loadCore': function(e) {
            this.lisp().loadCore(e.value);
        },

        'lispCode': function(e) {
            var result, error;
            try {
                result = String(this.lisp().exec(e.value));
            } catch(e) {
                error = true;
                result = e.message;
            }
            x.runApplication({
                app: "hello",
                appOptions: { 
                    title: e.value,
                    text: result,
                },
            });
            this.lisp().saveCore();
        },
    }
};

x = new WindowSystem(WindowSystemDefaults);

$(document).ready(function () {
    $('body').html(x.$el);
    $('body').css(Styles.Body || { margin: "0px" });
    $('body').keypress(function(e) {
        x.keyPress(e);
    });
    // Fix backspace issue.
    $('body').on('keydown', function() {
        var key = event.keyCode || event.charCode;
        
        if( key == 8 || key == 46 )
            return false;
    });
});
x.registerApplication("WindowSystem", WindowSystem);
var AppView = new View({
    type: "Daemon",
});

x.registerApplication("daemon", AppView, {
});
var AppView = new View({
    type: "Cell",
    model: "options",
    init: function (options) {
        this.create('enabled');
        this.create('text', options.text || ' ');
        this.create('blink');
        this.create('blinkTime', options.blinkTime || 1000);
        this.create('blinkColor', options.blinkColor || "black");

        this.create('timer');
        var blink;
        this.on('change:blink', function (e) {
            this.debug && console.log('change:blink', this.blink(), this);
            if(this.blink()) {
                this.timer(setInterval(function () {
                    if(blink) {
                        this.$el.css({transition: "ease-in .25s", 
                                      background: "transparent"});
                    } else {
                        this.$el.css({
                                      background: this.blinkColor()});
                    }
                    blink = !blink;
                }.bind(this), this.blinkTime()));
            } else {
                this.debug && console.log('timer', this.timer());
                clearInterval(this.timer());
                this.timer(undefined);
                this.$el.css({background: "transparent"});
            }
            // this.trigger('blink'); FIXME causes trigger loop
        });
        this.on('change:enabled', function (e) {
            if(this.enabled()) {
                this.$el.css({transition: "ease-in .25s", 
                              background: this.blinkColor()});      
            } else {
                this.$el.css({transition: "ease-in .25s", 
                              background: "transparent"});
            }
        });
        this.on('dragStart', function (e) {
            this.toggle(true);
        });

        this.on('change:timer', function () {} );
        this.on('change:text', this.render);
        this.on('change:blink', this.render);
        this.on('deleteWindow', function (e) {
            this.timer() && clearInterval(this.timer());
        });
        this.blink(options.blink);
    },

    toggle: function (loud) {
        this.blink(false, loud);
        this.enabled(!this.enabled(), !loud);
    },
    
    render: function () {
        this.$el.text(this.text());
        return this.$el;
    }
});

x.registerApplication("cell", AppView, {
    title: "Cell",
    style: {
        width: "8px",
        height: "12px",
        background: "transparent"
    }
});
var AppView = new View({
    type: "HelloView",
    tagName: "iframe",
    init: function(options) {
        this.create('uri');
        this.on('change:uri', function (e) {
            this.$el.attr('src', this.uri());
            this.$el.attr('frameborder', 0);
            this.$el.attr('width',
                          options.style &&
                          options.style.width  || "600px")
            this.$el.attr('height',
                          options.style &&
                          options.style.height || "600px")
        });
        this.uri(options.uri);
    }
});

x.registerApplication("iframe", AppView, {
    title: "IFrame.",
});
var AppView = (function () {
    var blank = new View({});
    var Layer = new View({
        tagName: "table",
        style: {
            borderSpacing: "0px",
            borderCollapse: "0px",
            
        },

        init: function (model) {
            this.create('grid', model); // embed model
            this.create('visible', true);

            this.resize(this.grid().cols(), this.grid().rows(), true);
            this.grid().on('change', function (e) {
                if(e.target.type === "GridView") {
                    this.resize(e.target.cols(),
                                e.target.rows(), true);
                }
            }.bind(this));
        },

        resize: function (cols, rows, silent) {
            if(cols && rows) {
                var newSize = cols*rows;
                this.clear(silent);
                for(var i = 0; i < newSize; i++) {
                    this.add(this.grid().initialElement() || 
                             x.spawnApplication(this,
                                                "cell",
                                                {
                                                    style: {
                                                        width: this.grid().cellWidth(),
                                                        height: this.grid().cellHeight(),
                                                    }
                                                }), true, silent);
                }
            }
        },

        getColRow: function(col, row, silent) {
            var index = row*(this.grid().cols()) + col;
            return this.current(index, silent);
        },

        setColRow: function(col, row, appView, noRender, silent) {
            var index = row*(this.grid().cols()) + col;
            this.remove(index, silent);
            this.insertAt(index, appView, silent);
            if(!noRender)
                this.render();
        },

        render: function () {
            this.$el.html([]);
            for(var i = 0; i < this.grid().rows(); i++) {
                var tr = $("<tr>");
                for(var j = 0; j < this.grid().cols(); j++) {
                    var td = $("<td>");
                    var index = i*this.grid().cols() + j;
                    td.html(this.at(index).$el);
                    tr.append(td);
                }
                this.$el.append(tr);
            }
            return this.$el;
        }
    });

    return new View({
        type: "GridView",
        model: "options",
        init: function(model) {
            this.create('cols', this.options.cols || 1);
            this.create('rows', this.options.rows || 1);
            this.create('layers', this.options.layers || 1);
            this.create('cellWidth', this.options.cellWidth);
            this.create('cellHeight', this.options.cellHeight);
            this.create('initialElement',
                        this.options.initialElement);
                        
            for(var i = 0; i < this.layers(); i++) {
                this.add(new Layer(this));
            }
            this.current(0);

            this.create('layer', 0);
            this.on('modified', this.render);
            this.on('modified:layer', function (e) {
                var n = e.value;
                if(n < 0 || n >= this.layers()) 
                    throw new Error("grid: attempt to set to invalid layer number: " + n);
             });

            this.on('change:visible', this.render());
            this.on('change:current', function (e) { 
                //this.trigger('gridAddressChange', e);
            }); // HACK causes trigger loop if not here
        },

        setColRow: function (col, row, appView, noRender, silent) {
            this.current().setColRow(col, row, appView, noRender, silent);
            if(!noRender)
                this.render();
        },

        getColRow: function (col, row, silent) {
            return this.current().getColRow(col, row, silent);
        },

        render: function () {
            var html = this.map(function (layer) {
                if(layer.visible())
                    return layer.$el;
            });

            this.$el.html(html);
        },

        broadcast: function(funName, e, loud) {
            for(var i = 0; i < this.rows(); i++) {
                for(var j = 0; j < this.cols(); j++) {
                    var thing  = this.getColRow(j, i);
                    thing[funName] && thing[funName](e, !loud);
                    if(thing.broadcast) {
                        thing.broadcast(funName, e, loud);
                    } 
                    if(thing.grid && thing.grid().broadcast) {
                        thing.grid().broadcast(funName, e, loud);
                    } 
                }
            }
        }
    });
})();

x.registerApplication("grid", AppView, {});
var AppView = new View({
    type: "HelloView",
    init: function(options) {
        this.$el.html(options.text || "Goodbye, World!");
    }
});

x.registerApplication("hello", AppView, {
    title: "In the depths of Mount Doom.",
    text: "Hello, World!"
});
var AppView = new View({
    type: "ImageView",
    tagName: "img",
    init: function(options) {
        this.$el.attr('src', options.uri || "broken");
    }
});

x.registerApplication("image", AppView, {
    text: "Image"
});
var AppView = (function () {
    return new View({
        type: "Window",
        model: "options",
        style: Styles.Window,
        init: function(options, parent) {
            var appPlace = 0;
            if(!options.noTitleBar) {
                this.create('grid', x.spawnApplication(this, "grid", {
                    rows: 2
                }));
                this.grid().setColRow(0, 0, 
                                      this.create('titleBar', 
                                                  x.spawnApplication(this, 
                                                                     "titlebar",
                                                                     options.appOptions ||
                                                                     options)));
                appPlace = 1;
            } else {
                this.create('grid', x.spawnApplication(this, "grid"));
            }
            this.grid().setColRow(0, appPlace, 
                                  this.create('app', 
                                              x.spawnApplication(this, 
                                                                 options.app,
                                                                 options.appOptions ||
                                                                 options)));
                
            this.options.width && this.$el.width(this.options.width);
            this.options.height && this.$el.height(this.options.height);
            this.on('change', this.render);
            this.on('modified', this.render);

            this.on('keyPress', function (e) {
                this.grid().broadcast('keyPress', e);
            });
        },

        render: function () {
            return this.$el.html(this.grid().$el);
        }
    });
})();

x.registerApplication("window", AppView, {
    title: "Hello, World!",
    app: "hello"
});
var AppView = (function () {
    return new View({
        type: "TitleBar",
        style: Styles.TitleBar,
        events: {
            dblclick: function(e) {
                if(this.maximized) {
                    this.trigger('restore', e);
                } else {
                    this.trigger('maximize', e);
                }
                this.maximized = !this.maximized;
            }
        },

        init: function(options) {
            this.maximized = false;
            this.$el.text(options.title || "Application");

            /* A little animation */
            var r = 4, rinc = 1;
            setInterval(function () {
                if((r > 8) || (r < 1)) {
                    rinc *= -1;
                }
                r += rinc;
                this.$el.css({borderRadius: r + "px"});
            }.bind(this), 314);

            this.on('dragStart', function (e) {
                this.dragItem = e.target.parent;
                this.dragX = e.value.clientX;
                this.dragY = e.value.clientY;
                var pos = this.dragItem.$el.position();
                this.dragDX = pos.left - this.dragX;
                this.dragDY = pos.top - this.dragY;
            });
                
            this.on('drag', function (e) {
                var pos = {
                    left: e.value.clientX + this.dragDX + "px",
                    top: e.value.clientY + this.dragDY + "px"
                };
                x.placeWindow(this.dragItem, pos.left, pos.top);
            });

            this.on('dragStop', function (e) {
                this.dragItem = null;
            });
        },
    });
})();
x.registerApplication("titlebar", AppView);
var AppView = new View({
    type: "ButtonView",
    tagName: "button",

    events: {
        click: function (e) {
            var click = this.click();
            click && click(e);
            e.stopPropagation();
        }
    }, 

    init: function(options) {
        console.log(options);
        this.create('click', options.click);
        this.create('text', options.text || "Button");

        this.on('change:text', this.render);
    },

    render: function () {
        return this.$el.text(this.text());
    }
});

x.registerApplication("button", AppView, {
});
var AppView = new View({
    type: "ListView",
    init: function (options) {
        this.create('reverse', options.reverse);
        this.on('add', this.render);
    },
    render: function() {
        if(!this.reverse()) {
            this.each(function(e) {
                this.$el.append(e.$el);
            });
        } else {
            this.each(function(e) {
                this.$el.prepend(e.$el);
            });
        }
        return this.$el;
    }
});

x.registerApplication("list", AppView, {});
var AppView = new View({
    type: "Listener",
    tagName: "textarea",
    style: {
        width: "100%",
    },
    events: {
        keypress: function (e) {
            if(e.charCode === 13 && !e.shiftKey) {
                var code = this.$el.val();
                if(this.triggerLispCode()) {
                    this.trigger('lispCode', code);
                } else {
                    x.runApplication({
                        app: "hello",
                        title: code,
                        text: String(this.lisp().exec(code))
                    });
                }
                this.$el.val('');
                e.preventDefault();
            }
        }
    },
    init: function(options) {
        this.create('triggerLispCode',
                    options.triggerLispCode);
        this.create('lisp', options.lisp || new Lisp());
        this.on('dragStart', function () { } );
        this.on('drag', function () { } );
        this.on('dragStop', function () { } );
    }
});

x.registerApplication("listener", AppView, {
    title: "Listener",
    lisp: new Sigil(),
    style: {
        width: "40em",
        height: "3em",
        padding: ".25em"
    }
});
var AppView = new View({
    type: "Notebook",
    init: function (options) {
        this.create('grid', x.spawnApplication(this, "grid", { rows: 2 }));
        this.create('terminal', x.spawnApplication(this, "terminal", {
            style: {
                border: "1px solid black"
            }
        }));
        this.create('list', x.spawnApplication(this, "list", {
            reverse: true,
            style: {
                border: "2px solid black"
            }
        }));
        this.grid().setColRow(0, 0, this.terminal());
        this.grid().setColRow(0, 1, this.list());

        this.on('lispCode', function (e) {
            console.log('notebook: lispCode: ' + e);
            var code = e.value;
            var result, error = false;
            try {
                result = String(this.lisp.exec(code));
            } catch (e) {
                error = true;
 
                result = e.message;
            }

            var codeView = x.spawnApplication(this, "hello", {
                app: "hello",
                text: code,
                style: {
                    padding: ".5em",
                    background: error && "red" || "green",
                    fontWeight: "bold"
                }
            });

            var resultView = x.spawnApplication(this, "hello", {
                app: "hello",
                text: result,
                style: {
                    padding: ".5em",
                    background: "white"
                }
            });
            this.list().add(codeView, true);
            this.list().add(resultView);
            this.trigger('saveCore');
        });
    },

    
    render: function() {
        return this.$el.html(this.grid().$el);
    }
});

x.registerApplication("notebook", AppView, {
    title: "Notebook"
});
var AppView = (function () {
    return new View({
        type: "Terminal",
        init: function (options) {
            this.create('blank', new (new View({})));
            this.create('rows', options.rows || 25);
            this.create('cols', options.cols || 80);
            this.create('cursorX', 0);
            this.create('cursorY', 0);
            this.create('grid',
                        x.spawnApplication(this,
                                           "grid",
                                           {
                                               rows: this.rows(), 
                                               cols: this.cols(),
                                               cellWidth: "8px",
                                               cellHeight: "12px",
                                               style: {
                                                   background: x.getApplicationOptions("cell").
                                                       style.background || "black",
                                               }
                                           }));
            this.on("change:cursorX", function(e) {
                this.disableCursor(e.value, this.cursorY())
                this.onCharacter(this.cursorX(), this.cursorY());
                this.setCursor(this.cursorX(), this.cursorY());
                this.matchParen();
            });
            this.on("change:cursorY", function(e) {
                this.disableCursor(this.cursorX(), e.value);
                this.onCharacter(this.cursorX(), this.cursorY());
                this.setCursor(this.cursorX(), this.cursorY());
                this.matchParen();
            });

            this.create('mode');
            this.on('change:mode', function(e) {
                if(this.mode()) {
                    this.$el.css({boxShadow: "0px 0px 12px green"});
                } else {
                    this.$el.css({boxShadow: "0px 0px 0px grey"});
                }
            });

            // This needs to be here for some reason
            // DON'T FIX OffCharacter.
            this.offCharacter(this.cols()-1, this.rows()-1);

            // if(options.help) ...
            this.insert(";Like VI, but different     Lisp Help\n"); 
            this.insert(";----------------------     ----------------------------\n\n");
            this.insert(";'?' is escape              * for last exec'd expression\n"); 
            this.insert(";'hjkl' to navigate         set, qquote, cons, car, cdr, atom, eq\n"); 
            this.insert(";'i' for insert mode        cond, lambda, apply, cond, bind, values\n"); 
            this.insert(";'e' to execute code        defmacro, self, save, load, rm, rmf\n"); 
            this.insert(";'z' to clear               env, fenv, +, -, *, /\n"); 
            this.insert(";'0' to first column\n\n");        
            this.insert(";Click the titlebar, hit 'z' to begin, and then 'i' to start typing.");
 
            this.create('history', 0);
            this.on('change:history', function(e) {
                this.clearScreen();
                var index = this.lisp.length - 1 - this.history();
                try {
                    var code = this.lisp.current(index, true)
                    this.insert(code);
                } catch(e) {
                    console.error("terminal: no history at " + this.history());
                }
            });

            this.matchParenMode = true;
        },

        newline: function() {
            this.cursorX(0);
            return this.cursorY(this.cursorY()+1);
        },

        keyPress: function(e) {
            console.log(e.value.charCode);
            if(!this.mode()) {
                if(e.value.charCode === 13) {
                    this.cursorX(0);
                    this.cursorY(this.cursorY()+1);
                } else if(e.value.charCode === 104) {
                    this.cursorX(this.cursorX()-1);
                } else if(e.value.charCode === 108) {
                    this.cursorX(this.cursorX()+1);
                } else if(e.value.charCode === 106) {
                    this.cursorY((this.cursorY()+1)%this.rows());
                } else if(e.value.charCode === 107) {
                    this.cursorY(this.cursorY()-1);
                } else if(e.value.charCode === 101) {
                    this.execute();
                } else if(e.value.charCode === 99) {
                    this.onCharacter(this.cursorX(), this.cursorY());
                } else if(e.value.charCode === 100) {
                    this.offCharacter(this.cursorX(), this.cursorY());
                } else if(e.value.charCode === 122) {
                    this.clearScreen();
                } else if(e.value.charCode === 48) {
                    this.cursorX(0);
                } /* else if(e.value.charCode === 112) {
                    this.previousHistory();
                } else if(e.value.charCode === 110) {
                    this.nextHistory();
                } else if(e.value.charCode === 68) {
                    this.deleteCoreEntry();
                } */ else {
                    this.mode(e.value.charCode === 105);
                } 
            } else {
                if(this.mode(e.value.charCode !== 63)) {
                    this.insert(String.fromCharCode(e.value.charCode));
                }
            }
            e.value.preventDefault();
        },

        execute: function() {
            var code = "";
            for(var i = 0; i < this.grid().rows(); i++) {
                for(var j = 0; j < this.grid().cols(); j++) {
                    var cell = this.grid().getColRow(j, i);
                    code += cell.text();
                }
                code += "\n";
            }
            
            if(this.debug) {
                var x = [];
                for(var i in code) {
                    x.unshift(code[i]);
                }
                console.log('terminal: execute', x);
            }

            this.trigger('lispCode', code);
        },

        clearScreen: function(loud) {
            this.debug && console.log('terminal:clearScreen');
            this.cursorX(0);
            this.cursorY(0);
            for(var i = 0; i < this.rows(); i++) {
                for(var j = 0; j < this.cols(); j++) {
                    this.setCharacter(j, i, ' ', false, {background: "transparent"});
                }
            }
            this.cursorX(0);
            this.cursorY(0);
        },

        _setCursorCell: function(px, py, cell, loud) {
            return setTimeout(function () {
                this.grid().setColRow(px, py, cell, false, !loud);
            }.bind(this), 0); // wierd
        },

        getCursor: function (px, py) {
            return this.grid().getColRow(px, py);
        },

        setCursor: function (px, py) {
            var cell = this.grid().getColRow(px, py);
            cell.blink(true);
            return cell;
        },

        offCharacter: function (px, py, loud) {
            return this._setCursorCell(px, py, x.spawnApplication(this, "cell", {}), loud);
        },

        enableCursor: function(px, py, loud) {
            var cell = this.setCursor(px, py);
            cell.blink(true);
        },

        disableCursor: function(px, py, loud) {
            var cell = this.getCursor(px, py);
            cell.blink(false);
        },

        onCharacter: function (px, py) {
            var cell = this.getCursor(px, py);
            cell.$el.css({background: "black"});
        },

        setCharacter: function(px, py, character, blink, style, loud) {
            var cell = this.getCursor(px, py);
            if(blink !== undefined)
                cell.blink(blink);
            if(character !== undefined)
                cell.text(character);
            if(style !== undefined)
                cell.$el.css(style);
        },
        
        blinkCharacter: function (px, py, blink) {
            var cell = this.getCursor(px, py);
            cell.blink(blink);
        },

        toggleCharacter: function (px, py) {
            this.getCursor(px, py).toggle();
        },

        insert: function(stringOrCode, blink, loud) {
            if(Array.isArray(stringOrCode)) {
                this.insert(this.lisp.printToString(stringOrCode));
            } else {
                for(c in stringOrCode) {
                    this.setCharacter(this.cursorX(), this.cursorY(),
                                      stringOrCode[c], blink, loud);
                    if(stringOrCode[c] === '\n' || stringOrCode[c] === '\r') {
                        this.cursorX(0);
                        this.cursorY(this.cursorY()+1);
                    } else {
                        var newx = (this.cursorX()+1)%this.cols();
                        var newy = this.cursorY();
                        if(newx < this.cursorX()) {
                            newy++;
                        }
                        this.cursorX(newx);
                        this.cursorY(newy);
                    }
                }
            }
        },

        getBuffer: function () {
            var buffer = [];
            for(var y = 0; y < this.rows(); y++) {
                for(var x = 0; x < this.cols(); x++) {
                    buffer.push(this.getCursor(x, y).$el.text());
                }
            }
            return buffer;
        },

        matchParen: function () {
            if(this.matchParenMode) {
                var x = this.cursorX()-1;
                var y = this.cursorY();

                for(var j = 0; j < this.rows(); j++) {
                    for(var k = 0; k < this.cols(); k++) {
                        cell = this.getCursor(k, j);
                        cell.$el.css({color: "black", textDecoration: "none"});
                    }
                }
                
                if(x >= 0) {
                    var cell;
                    
                    cell = this.getCursor(this.cursorX()-1, this.cursorY());
                    var c = cell.$el.text();
                    if(c === ')') {
                        var buffer = this.getBuffer();
                        var i = x + y*this.cols();
                        var closes = 0;
                        while(i >= 0) {
                            c = buffer[i];
                            if(c == '(') {
                                closes--;
                            } else if(c === ')') {
                                closes++;
                            }

                            if(closes === 0)
                                break;

                            i--;
                        }
                        console.log('closes', closes);
                        if(closes === 0) {
                            x = i % this.cols();
                            y = Math.floor(i / this.cols());
                            console.log('x,y', x, y);

                            this.setCharacter(x, y, undefined, false,
                                              {color: "red", textDecoration: "underline"});
                        }
                    }
                }
            }
        },

        render: function() {
            return this.$el.html(this.grid().$el);
        },

        previousHistory: function() {
            this.history(this.history()+1);
        },

        nextHistory: function() {
            if(this.history() >= 0)
                this.history(this.history()-1);
        },

        deleteCoreEntry: function (index) {
            index = this.history();
            console.log('terminal: deleteCoreEntry: ' + index);
            this.lisp && this.lisp.remove(this.lisp.current());
            this.trigger('saveCore');
        }
    });
})();

x.registerApplication("terminal", AppView, {
    title: "Terminal"
});
var AppView = (function () {
    return new View({
        type: "AudioPlayerView",
        init: function(options) {
            this.create('audio');
            this.create('playlist');
            
            this.create('playButton', x.spawnApplication(this, "button", {
                text: "Play",
                click: this.play.bind(this)
            }));

            this.create('stopButton', x.spawnApplication(this, "button", {
                text: "Stop",
                click: this.stop.bind(this)
            }));

            this.create('nextButton', x.spawnApplication(this, "button", {
                text: "Next",
                click: this.next.bind(this)
            }));

            this.on('change:playlist', function (e) {
                $.ajax({
                    url: this.playlist(),

                    success: function (data) {
                        this.clear(true);
                        data = data.split('\n');
                        while(data.length > 0) {
                            var i = Math.floor(Math.random()*data.length);
                            this.debug && console.log("audioPlayer: ", data.length, data[i]);
                            this.add(data[i], true);
                            data.splice(i, 1);
                        }
                        this.current(0);
                    }.bind(this),

                    failure: function (e) {
                        alert("audioPlayer: cannot download playlist!");
                    }
                });
            });

            this.on('change:current', function () {
                this.stop();
                this.play();
                this.render();
            });

            this.playlist(options.playlist || "music/playlist");
        },
        
        play: function () {
            console.log('audioPlayer: current: ', this.current());

            var audio = new Audio(this.current());
            audio.addEventListener('ended',function(){
                this.next();
            }.bind(this));
            this.audio(audio, true);
            audio.play();
            this.playing = true;
        },
        
        stop: function () {
            this.audio().pause()
            this.audio(undefined, true);
            this.playing = false;
        },

        render: function () {
            var html = [ this.playButton().$el,
                         this.stopButton().$el,
                         this.nextButton().$el ];
            return this.$el.html(html);
        }
    })
})();
    
x.registerApplication("audioplayer", AppView, {
    title: "Audio Player"
});