fix(content-selector): incorrection projection in nested scenarios

Fixes #231

src/composition-engine.js

@@ -31,7 +31,7 @@ interface CompositionContext {
   */
   viewModel?: any;
   /**
-  * Data to be passed to the "activate" hook on the view model. 
+  * Data to be passed to the "activate" hook on the view model.
   */
   model?: any;
   /**

src/content-selector.js

@@ -25,7 +25,7 @@ export class _ContentSelector {
     while (currentChild) {
       nextSibling = currentChild.nextSibling;
 
-      if (currentChild.viewSlot) {
+      if (currentChild.isContentProjectionSource) {
         let viewSlotSelectors = contentSelectors.map(x => x.copyForViewSlot());
         currentChild.viewSlot._installContentSelectors(viewSlotSelectors);
       } else {

src/instructions.js

@@ -204,6 +204,7 @@ export class TargetInstruction {
     instruction.behaviorInstructions = [liftingInstruction];
     instruction.viewFactory = liftingInstruction.viewFactory;
     instruction.providers = [liftingInstruction.type.target];
+    instruction.lifting = true;
     return instruction;
   }
 
@@ -266,6 +267,7 @@ export class TargetInstruction {
 
     this.anchorIsContainer = false;
     this.elementInstruction = null;
+    this.lifting = false;
 
     this.values = null;
   }

src/view-factory.js

@@ -40,6 +40,7 @@ function elementContainerGet(key) {
   if (key === ViewSlot) {
     if (this.viewSlot === undefined) {
       this.viewSlot = new ViewSlot(this.element, this.instruction.anchorIsContainer);
+      this.element.isContentProjectionSource = this.instruction.lifting;
       this.children.push(this.viewSlot);
     }
 

src/view-slot.js

@@ -40,6 +40,7 @@ export class ViewSlot {
     this.isAttached = false;
     this.contentSelectors = null;
     anchor.viewSlot = this;
+    anchor.isContentProjectionSource = false;
   }
 
   /**