[gnome-documents] Add FullscreenAction

[Cosimo Cecchi <cosimoc src gnome org>]

commit 1767c79cda7e69e531ef58f411375594a57f4a5e
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Sep 19 14:44:17 2016 -0700

    Add FullscreenAction
    
    This is a GAction implementation that controls the fullscreen behavior
    of a GtkWindow.

 src/fullscreenAction.js                   |  170 +++++++++++++++++++++++++++++
 src/org.gnome.Books.src.gresource.xml     |    1 +
 src/org.gnome.Documents.src.gresource.xml |    1 +
 3 files changed, 172 insertions(+), 0 deletions(-)
---
diff --git a/src/fullscreenAction.js b/src/fullscreenAction.js
new file mode 100644
index 0000000..e5f3089
--- /dev/null
+++ b/src/fullscreenAction.js
@@ -0,0 +1,170 @@
+/*
+ * Copyright (c) 2016 Endless Mobile, Inc.
+ *
+ * Gnome Documents is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * Gnome Documents is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with Gnome Documents; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Author: Cosimo Cecchi <cosimoc gnome org>
+ *
+ */
+
+const Gdk = imports.gi.Gdk;
+const Gio = imports.gi.Gio;
+const GLib = imports.gi.GLib;
+const GObject = imports.gi.GObject;
+const Gtk = imports.gi.Gtk;
+
+const Lang = imports.lang;
+
+const FullscreenAction = new Lang.Class({
+    Name: 'FullscreenAction',
+    Extends: GObject.Object,
+    Implements: [Gio.Action],
+    Properties: {
+        'enabled': GObject.ParamSpec.boolean('enabled', 'enabled', 'Whether the action is enabled',
+                                             GObject.ParamFlags.READABLE | GObject.ParamFlags.WRITABLE,
+                                             true),
+        'name': GObject.ParamSpec.override('name', Gio.Action),
+        'parameter-type': GObject.ParamSpec.override('parameter-type', Gio.Action),
+        'state': GObject.ParamSpec.override('state', Gio.Action),
+        'state-type': GObject.ParamSpec.override('state-type', Gio.Action),
+        'window': GObject.ParamSpec.object('window', 'Window', 'The GtkWindow',
+                                           GObject.ParamFlags.READABLE | GObject.ParamFlags.WRITABLE,
+                                           Gtk.Window.$gtype)
+    },
+
+    _init: function(params) {
+        this._enabled = true;
+        this._fullscreen = false;
+        this._window = null;
+        this._windowStateId = 0;
+
+        this.parent(params);
+    },
+
+    _disconnectFromWindow: function() {
+        if (this._windowStateId != 0) {
+            this._window.disconnect(this._windowStateId);
+            this._windowStateId = 0;
+        }
+    },
+
+    _connectToWindow: function() {
+        if (this._window) {
+            this._windowStateId = this._window.connect('window-state-event',
+                                                       Lang.bind(this, this._onWindowStateEvent));
+            this._onWindowStateEvent();
+        }
+    },
+
+    _onWindowStateEvent: function() {
+        let window = this._window.get_window();
+        if (!window)
+            return;
+
+        let state = window.get_state();
+        let fullscreen = (state & Gdk.WindowState.FULLSCREEN);
+        if (fullscreen == this._fullscreen)
+            return;
+
+        this._fullscreen = fullscreen;
+        this.notify('state');
+    },
+
+    _changeState: function(fullscreen) {
+        if (!this._window)
+            return;
+
+        if (fullscreen)
+            this._window.fullscreen();
+        else
+            this._window.unfullscreen();
+    },
+
+    vfunc_activate: function() {
+        this._changeState(!this._fullscreen);
+    },
+
+    vfunc_change_state: function(state) {
+        let fullscreen = state.get_boolean();
+        this._changeState(fullscreen);
+    },
+
+    vfunc_get_enabled: function() {
+        return this.enabled;
+    },
+
+    vfunc_get_name: function() {
+        return this.name;
+    },
+
+    vfunc_get_parameter_type: function() {
+        return this.parameter_type;
+    },
+
+    vfunc_get_state: function() {
+        return this.state;
+    },
+
+    vfunc_get_state_hint: function() {
+        return null;
+    },
+
+    vfunc_get_state_type: function() {
+        return this.state_type;
+    },
+
+    set enabled(v) {
+        if (v == this._enabled)
+            return;
+
+        this._enabled = v;
+        this.notify('enabled');
+    },
+
+    get enabled() {
+        return this._enabled;
+    },
+
+    get name() {
+        return 'fullscreen';
+    },
+
+    get parameter_type() {
+        return null;
+    },
+
+    get state() {
+        return new GLib.Variant('b', this._fullscreen);
+    },
+
+    get state_type() {
+        return new GLib.VariantType('b');
+    },
+
+    set window(w) {
+        if (w == this._window)
+            return;
+
+        this._disconnectFromWindow();
+        this._window = w;
+        this._connectToWindow();
+
+        this.notify('window');
+    },
+
+    get window() {
+        return this._window;
+    },
+});
diff --git a/src/org.gnome.Books.src.gresource.xml b/src/org.gnome.Books.src.gresource.xml
index e76b30e..03178a4 100644
--- a/src/org.gnome.Books.src.gresource.xml
+++ b/src/org.gnome.Books.src.gresource.xml
@@ -9,6 +9,7 @@
     <file>epubview.js</file>
     <file>embed.js</file>
     <file>errorBox.js</file>
+    <file>fullscreenAction.js</file>
     <file>main.js</file>
     <file>mainToolbar.js</file>
     <file>mainWindow.js</file>
diff --git a/src/org.gnome.Documents.src.gresource.xml b/src/org.gnome.Documents.src.gresource.xml
index 44c00e0..baa6224 100644
--- a/src/org.gnome.Documents.src.gresource.xml
+++ b/src/org.gnome.Documents.src.gresource.xml
@@ -9,6 +9,7 @@
     <file>epubview.js</file>
     <file>embed.js</file>
     <file>errorBox.js</file>
+    <file>fullscreenAction.js</file>
     <file>main.js</file>
     <file>mainToolbar.js</file>
     <file>mainWindow.js</file>