Fix #131 and #102

.gitignore

@@ -1,3 +1,4 @@
+/.idea
 test/bin/
 target/
 doc/

Cargo.toml

@@ -46,6 +46,7 @@ features = ["dox", "embed-lgpl-docs"]
 [dependencies]
 libc = "0.2"
 bitflags = "1.0"
+once_cell = "1.0"
 
 [dependencies.gtk-source-sys]
 path = "./sourceview-sys"
@@ -91,3 +92,9 @@ git = "https://github.com/gtk-rs/gio"
 
 [dev-dependencies]
 gir-format-check = "^0.1"
+
+[dev-dependencies.gtk]
+git = "https://github.com/gtk-rs/gtk"
+
+[dev-dependencies.glib]
+git = "https://github.com/gtk-rs/glib"

examples/autocomplete_words.rs

@@ -0,0 +1,30 @@
+extern crate gio;
+extern crate gtk;
+extern crate sourceview;
+use gio::prelude::*;
+use gtk::prelude::*;
+use sourceview::prelude::*;
+
+use std::env;
+
+fn main() {
+    let uiapp = gtk::Application::new(None, gio::ApplicationFlags::FLAGS_NONE)
+        .expect("Application::new failed");
+    uiapp.connect_activate(|app| {
+        let win = gtk::ApplicationWindow::new(app);
+        win.set_default_size(320, 200);
+        win.set_title("Basic example");
+
+        let sourceview = sourceview::View::new();
+        let completion = sourceview::CompletionWords::new(Some("Words"), None);
+        completion.register(&sourceview.get_buffer().expect("Sourceview has no buffer."));
+        sourceview
+            .get_completion()
+            .expect("Sourceview has no completion")
+            .add_provider(&completion);
+        win.add(&sourceview);
+
+        win.show_all();
+    });
+    uiapp.run(&env::args().collect::<Vec<_>>());
+}

examples/custom_autocompletion_subclass.rs

@@ -0,0 +1,168 @@
+extern crate gio;
+extern crate glib;
+extern crate gtk;
+extern crate sourceview;
+
+use gio::prelude::*;
+use glib::glib_object_wrapper;
+use glib::subclass::types::ObjectSubclass;
+use glib::translate::*;
+use gtk::prelude::*;
+use sourceview::prelude::*;
+use sourceview::subclass::CompletionProviderImpl;
+
+use glib::subclass::object::ObjectImpl;
+use glib::GString;
+use sourceview::{CompletionInfo, CompletionProvider};
+use std::env;
+
+fn main() {
+    let uiapp = gtk::Application::new(None, gio::ApplicationFlags::FLAGS_NONE)
+        .expect("Application::new failed");
+    uiapp.connect_activate(|app| {
+        let win = gtk::ApplicationWindow::new(app);
+        win.set_default_size(320, 200);
+        win.set_title("Basic example");
+
+        let sourceview = sourceview::View::new();
+        let completion = CustomAutocomplete::new();
+        let _ = sourceview
+            .get_completion()
+            .expect("Sourceview has no completion")
+            .add_provider(&completion);
+        win.add(&sourceview);
+
+        win.show_all();
+    });
+    uiapp.run(&env::args().collect::<Vec<_>>());
+}
+
+glib::glib_wrapper! {
+    pub struct CustomAutocomplete(Object<glib::subclass::simple::InstanceStruct<imp::CustomAutocomplete>, glib::subclass::simple::ClassStruct<imp::CustomAutocomplete>, CustomAutocompleteClass>) @implements crate::CompletionProvider;
+
+    match fn {
+        get_type => || imp::CustomAutocomplete::get_type().to_glib(),
+    }
+}
+
+impl CustomAutocomplete {
+    fn new() -> CustomAutocomplete {
+        glib::Object::new(Self::static_type(), &[])
+            .expect("Failed to create CustomAutocomplete instance.")
+            .downcast()
+            .expect("Created CustomAutocomplete is of wrong type.")
+    }
+}
+
+mod imp {
+    use super::*;
+    use sourceview::CompletionProposal;
+
+    pub struct CustomAutocomplete;
+
+    impl ObjectSubclass for CustomAutocomplete {
+        const NAME: &'static str = "CustomAutocomplete";
+        type ParentType = glib::Object;
+        type Instance = glib::subclass::simple::InstanceStruct<Self>;
+        type Class = glib::subclass::simple::ClassStruct<Self>;
+
+        glib::glib_object_subclass!();
+
+        fn type_init(type_: &mut glib::subclass::InitializingType<Self>) {
+            type_.add_interface::<CompletionProvider>();
+        }
+
+        fn new() -> Self {
+            CustomAutocomplete
+        }
+    }
+
+    impl ObjectImpl for CustomAutocomplete {
+        glib::glib_object_impl!();
+    }
+
+    impl CompletionProviderImpl for CustomAutocomplete {
+        fn get_name(&self, _obj: &CompletionProvider) -> GString {
+            GString::from("CustomAutocomplete")
+        }
+
+        fn get_icon(&self, _obj: &CompletionProvider) -> Option<gdk_pixbuf::Pixbuf> {
+            None
+        }
+
+        fn get_icon_name(&self, _obj: &CompletionProvider) -> Option<GString> {
+            None
+        }
+
+        fn get_gicon(&self, _obg: &CompletionProvider) -> Option<gio::Icon> {
+            None
+        }
+
+        fn populate(&self, obg: &CompletionProvider, context: &sourceview::CompletionContext) {
+            for i in 1..10 {
+                let item = sourceview::CompletionItem::new(
+                    &format!("Test {}", i),
+                    &format!("Test {};", i),
+                    None,
+                    Some("This is a test proposal"),
+                );
+                context.add_proposals(obg, &[item.upcast::<CompletionProposal>()], i == 9);
+            }
+        }
+
+        fn get_activation(&self, _obg: &CompletionProvider) -> sourceview::CompletionActivation {
+            sourceview::CompletionActivation::all()
+        }
+
+        fn provide_match(
+            &self,
+            _obg: &CompletionProvider,
+            _context: &sourceview::CompletionContext,
+        ) -> bool {
+            true
+        }
+
+        fn get_info_widget(
+            &self,
+            _obg: &CompletionProvider,
+            _proposal: &sourceview::CompletionProposal,
+        ) -> Option<gtk::Widget> {
+            None
+        }
+
+        fn update_info(
+            &self,
+            _obg: &CompletionProvider,
+            _proposal: &sourceview::CompletionProposal,
+            _info: &CompletionInfo,
+        ) {
+        }
+
+        fn get_start_iter(
+            &self,
+            _obg: &CompletionProvider,
+            _context: &sourceview::CompletionContext,
+            _proposal: &sourceview::CompletionProposal,
+            _iter: &gtk::TextIter,
+        ) -> bool {
+            false
+        }
+
+        fn activate_proposal(
+            &self,
+            _obg: &CompletionProvider,
+            _proposal: &sourceview::CompletionProposal,
+            _iter: &gtk::TextIter,
+        ) -> bool {
+            false
+        }
+
+        fn get_interactive_delay(&self, _obj: &CompletionProvider) -> i32 {
+            0
+        }
+
+        fn get_priority(&self, _obg: &CompletionProvider) -> i32 {
+            1
+        }
+    }
+}

examples/plain_sourceview.rs

@@ -0,0 +1,23 @@
+extern crate gio;
+extern crate gtk;
+extern crate sourceview;
+use gio::prelude::*;
+use gtk::prelude::*;
+
+use std::env;
+
+fn main() {
+    let uiapp = gtk::Application::new(None, gio::ApplicationFlags::FLAGS_NONE)
+        .expect("Application::new failed");
+    uiapp.connect_activate(|app| {
+        let win = gtk::ApplicationWindow::new(app);
+        win.set_default_size(320, 200);
+        win.set_title("Basic example");
+
+        let sourceview = sourceview::View::new();
+        win.add(&sourceview);
+
+        win.show_all();
+    });
+    uiapp.run(&env::args().collect::<Vec<_>>());
+}

src/lib.rs

@@ -17,6 +17,7 @@ extern crate gobject_sys;
 extern crate gtk;
 extern crate gtk_source_sys;
 extern crate gtk_sys;
+extern crate once_cell;
 extern crate pango;
 
 extern crate libc;
@@ -56,6 +57,8 @@ pub mod prelude {
     pub use file_saver::FileSaverExtManual;
 }
 
+pub mod subclass;
+
 #[macro_use]
 mod rt;