[gnome-documents] Add "Copy to the Clipboard" functionality

[Cosimo Cecchi <cosimoc src gnome org>]

commit f9364e4bc3bcbbe366802287c9f665c940bb89f8
Author: Fabiano Fidêncio <fidencio redhat com>
Date:   Thu Mar 28 16:28:02 2013 +0100

    Add "Copy to the Clipboard" functionality
    
    https://bugzilla.gnome.org/show_bug.cgi?id=688756

 po/POTFILES.in                        |    1 +
 src/application.js                    |    3 +++
 src/gnome-documents.gresource.xml     |    1 +
 src/preview.js                        |   29 +++++++++++++++++++++++++++--
 src/resources/preview-context-menu.ui |   11 +++++++++++
 5 files changed, 43 insertions(+), 2 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 8395132..9935228 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -17,6 +17,7 @@ src/properties.js
 [type: gettext/glade]src/resources/app-menu.ui
 [type: gettext/glade]src/resources/preview-menu.ui
 [type: gettext/glade]src/resources/selection-menu.ui
+[type: gettext/glade]src/resources/preview-context-menu.ui
 src/searchbar.js
 src/search.js
 src/selections.js
diff --git a/src/application.js b/src/application.js
index 66bd523..83a984e 100644
--- a/src/application.js
+++ b/src/application.js
@@ -458,6 +458,9 @@ const Application = new Lang.Class({
               window_mode: WindowMode.WindowMode.PREVIEW },
             { name: 'places',
               accel: '<Primary>b',
+              window_mode: WindowMode.WindowMode.PREVIEW },
+            { name: 'copy',
+              accel: '<Primary>c',
               window_mode: WindowMode.WindowMode.PREVIEW }
         ];
 
diff --git a/src/gnome-documents.gresource.xml b/src/gnome-documents.gresource.xml
index 75ef1bf..4b2fe7d 100644
--- a/src/gnome-documents.gresource.xml
+++ b/src/gnome-documents.gresource.xml
@@ -4,6 +4,7 @@
     <file alias="app-menu.ui" preprocess="xml-stripblanks">resources/app-menu.ui</file>
     <file alias="preview-menu.ui" preprocess="xml-stripblanks">resources/preview-menu.ui</file>
     <file alias="selection-menu.ui" preprocess="xml-stripblanks">resources/selection-menu.ui</file>
+    <file alias="preview-context-menu.ui" 
preprocess="xml-stripblanks">resources/preview-context-menu.ui</file>
     <file alias="thumbnail-frame.png" preprocess="to-pixdata">resources/thumbnail-frame.png</file>
   </gresource>
 </gresources>
diff --git a/src/preview.js b/src/preview.js
index 0bde66d..bc6ed94 100644
--- a/src/preview.js
+++ b/src/preview.js
@@ -75,6 +75,11 @@ const PreviewView = new Lang.Class({
 
         this._createView();
 
+        // create context menu
+        let model = this._getPreviewContextMenu();
+        this._previewContextMenu = Gtk.Menu.new_from_model(model);
+        this._previewContextMenu.attach_to_widget(this.widget, null);
+
         // create page nav bar
         this._navBar = new PreviewNavBar(this._model);
         this._overlay.add_overlay(this._navBar.widget);
@@ -113,6 +118,11 @@ const PreviewView = new Lang.Class({
             function() {
                 this.view.find_next();
             }));
+        this._copy = Application.application.lookup_action('copy');
+        this._copy.connect('activate', Lang.bind(this,
+            function() {
+                this.view.copy();
+            }));
 
         let rotLeft = Application.application.lookup_action('rotate-left');
         rotLeft.connect('activate', Lang.bind(this,
@@ -141,6 +151,7 @@ const PreviewView = new Lang.Class({
 
     _onLoadStarted: function() {
         this._showPlaces.enabled = false;
+        this._copy.enabled = false;
     },
 
     _onLoadFinished: function(manager, doc, docModel) {
@@ -240,7 +251,9 @@ const PreviewView = new Lang.Class({
 
     _onViewSelectionChanged: function() {
         this._viewSelectionChanged = true;
-        if (!this.view.get_has_selection())
+        let has_selection = this.view.get_has_selection();
+        this._copy.enabled = has_selection;
+        if (!has_selection)
             this._cancelControlsFlip();
     },
 
@@ -329,6 +342,12 @@ const PreviewView = new Lang.Class({
             this._handleExternalLink));
     },
 
+    _getPreviewContextMenu: function() {
+        let builder = new Gtk.Builder();
+        builder.add_from_resource('/org/gnome/documents/preview-context-menu.ui');
+        return builder.get_object('preview-context-menu');
+    },
+
     _syncControlsVisible: function() {
         if (this._controlsVisible) {
             if (this._fsToolbar)
@@ -428,9 +447,15 @@ const PreviewView = new Lang.Class({
      },
 
     _onButtonPressEvent: function(widget, event) {
+        let button = event.get_button()[1];
 
-        this._viewSelectionChanged = false;
+        if (button == 3) {
+            let time = event.get_time();
+            this._previewContextMenu.popup(null, null, null, button, time);
+            return true;
+        }
 
+        this._viewSelectionChanged = false;
         return false;
    },
 
diff --git a/src/resources/preview-context-menu.ui b/src/resources/preview-context-menu.ui
new file mode 100644
index 0000000..c4a7212
--- /dev/null
+++ b/src/resources/preview-context-menu.ui
@@ -0,0 +1,11 @@
+<interface>
+  <menu id="preview-context-menu">
+    <section>
+      <item>
+        <attribute name="action">app.copy</attribute>
+        <attribute name="label" translatable="yes">_Copy</attribute>
+        <attribute name="accel">&lt;Primary&gt;c</attribute>
+      </item>
+    </section>
+  </menu>
+</interface>