[evolution/webkit-composer: 21/231] Make text-alignment buttons work

[Tomas Popela <tpopela src gnome org>]

commit b85868a788e20c957b21c117d1e4bc4cd892ab00
Author: Dan Vrátil <dvratil redhat com>
Date:   Fri Aug 3 11:38:07 2012 +0200

    Make text-alignment buttons work
    
    The 'current-value' property of the action group is binded
    with 'alignment' property of EEditorSelection.

 e-util/e-editor-actions.c   |   38 +++-----------
 e-util/e-editor-selection.c |  113 ++++++++++++++++++++++++++++++++++++++++++-
 e-util/e-editor-selection.h |    7 +++
 3 files changed, 126 insertions(+), 32 deletions(-)
---
diff --git a/e-util/e-editor-actions.c b/e-util/e-editor-actions.c
index 5af4a4c..0d78ff1 100644
--- a/e-util/e-editor-actions.c
+++ b/e-util/e-editor-actions.c
@@ -773,35 +773,6 @@ action_insert_text_file_cb (GtkAction *action,
 }
 
 static void
-action_justify_cb (GtkRadioAction *action,
-                   GtkRadioAction *current,
-                   EEditor *editor)
-{
-       WebKitDOMDocument *document;
-       const gchar *command;
-
-       document = webkit_web_view_get_dom_document (
-                       WEBKIT_WEB_VIEW (e_editor_get_editor_widget (editor)));
-
-       switch (gtk_radio_action_get_current_value (current))
-       {
-               case E_EDITOR_SELECTION_ALIGNMENT_CENTER:
-                       command = "justifyCenter";
-                       break;
-
-               case E_EDITOR_SELECTION_ALIGNMENT_LEFT:
-                       command = "justifyLeft";
-                       break;
-
-               case E_EDITOR_SELECTION_ALIGNMENT_RIGHT:
-                       command = "justifyRight";
-                       break;
-       }
-
-       webkit_dom_document_exec_command (document, command, FALSE, "");
-}
-
-static void
 action_language_cb (GtkToggleAction *action,
                     EEditor *editor)
 {
@@ -2077,7 +2048,7 @@ editor_actions_init (EEditor *editor)
                action_group, core_justify_entries,
                G_N_ELEMENTS (core_justify_entries),
                E_EDITOR_SELECTION_ALIGNMENT_LEFT,
-               G_CALLBACK (action_justify_cb), editor);
+               NULL, NULL);
        gtk_action_group_add_radio_actions (
                action_group, core_mode_entries,
                G_N_ELEMENTS (core_mode_entries),
@@ -2199,6 +2170,13 @@ editor_actions_init (EEditor *editor)
                ACTION (PASTE), "sensitive",
                G_BINDING_SYNC_CREATE);
 
+       /* This is connected to JUSTIFY_LEFT action only, but
+        * it automatically applies on all actions in the group. */
+       g_object_bind_property (
+               editor->priv->selection, "alignment",
+               ACTION (JUSTIFY_LEFT), "current-value",
+               G_BINDING_SYNC_CREATE | G_BINDING_BIDIRECTIONAL);
+
        g_object_bind_property (
                editor->priv->selection, "bold",
                ACTION (BOLD), "active",
diff --git a/e-util/e-editor-selection.c b/e-util/e-editor-selection.c
index a98ff90..78eba97 100644
--- a/e-util/e-editor-selection.c
+++ b/e-util/e-editor-selection.c
@@ -52,6 +52,7 @@ G_DEFINE_TYPE (
 enum {
        PROP_0,
        PROP_WEBVIEW,
+       PROP_ALIGNMENT,
        PROP_BACKGROUND_COLOR,
        PROP_BOLD,
        PROP_FONT_NAME,
@@ -133,6 +134,7 @@ static void
 webview_selection_changed (WebKitWebView *webview,
                           EEditorSelection *selection)
 {
+       g_object_notify (G_OBJECT (selection), "alignment");
        g_object_notify (G_OBJECT (selection), "background-color");
        g_object_notify (G_OBJECT (selection), "bold");
        g_object_notify (G_OBJECT (selection), "font-name");
@@ -168,6 +170,12 @@ e_editor_selection_get_property (GObject *object,
        EEditorSelection *selection = E_EDITOR_SELECTION (object);
 
        switch (property_id) {
+               case PROP_ALIGNMENT:
+                       g_value_set_int (value,
+                                       e_editor_selection_get_alignment (
+                                       selection));
+                       return;
+
                case PROP_BACKGROUND_COLOR:
                        g_value_set_string (value,
                                e_editor_selection_get_background_color (
@@ -252,6 +260,11 @@ e_editor_selection_set_property (GObject *object,
                                selection, g_value_get_object (value));
                        return;
 
+               case PROP_ALIGNMENT:
+                       e_editor_selection_set_alignment (
+                               selection, g_value_get_int (value));
+                       return;
+
                case PROP_BACKGROUND_COLOR:
                        e_editor_selection_set_background_color (
                                selection, g_value_get_string (value));
@@ -339,13 +352,25 @@ e_editor_selection_class_init (EEditorSelectionClass *klass)
                PROP_WEBVIEW,
                g_param_spec_object (
                        "webview",
-                       NULL,
-                       NULL,
+                       NULL,
+                       NULL,
                        WEBKIT_TYPE_WEB_VIEW,
                        G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
 
        g_object_class_install_property (
                object_class,
+               PROP_ALIGNMENT,
+               g_param_spec_int (
+                       "alignment",
+                       NULL,
+                       NULL,
+                       E_EDITOR_SELECTION_ALIGNMENT_LEFT,
+                       E_EDITOR_SELECTION_ALIGNMENT_RIGHT,
+                       E_EDITOR_SELECTION_ALIGNMENT_LEFT,
+                       G_PARAM_READWRITE));
+
+       g_object_class_install_property (
+               object_class,
                PROP_BACKGROUND_COLOR,
                g_param_spec_string (
                        "background-color",
@@ -530,6 +555,90 @@ e_editor_selection_replace (EEditorSelection *selection,
        webkit_dom_range_insert_node (range, WEBKIT_DOM_NODE (frag), NULL);
 }
 
+EEditorSelectionAlignment
+e_editor_selection_get_alignment (EEditorSelection *selection)
+{
+       WebKitDOMRange *range;
+       WebKitDOMNode *node;
+       WebKitDOMElement *element;
+       WebKitDOMCSSStyleDeclaration *style;
+       gchar *value;
+       EEditorSelectionAlignment alignment;
+
+       g_return_val_if_fail (
+               E_IS_EDITOR_SELECTION (selection),
+               E_EDITOR_SELECTION_ALIGNMENT_LEFT);
+
+       range = editor_selection_get_current_range (selection);
+       if (!range) {
+               return E_EDITOR_SELECTION_ALIGNMENT_LEFT;
+       }
+
+       node = webkit_dom_range_get_start_container (range, NULL);
+       if (!node) {
+               return E_EDITOR_SELECTION_ALIGNMENT_LEFT;
+       }
+
+       if (!WEBKIT_DOM_IS_ELEMENT (node)) {
+               element = webkit_dom_node_get_parent_element (node);
+       } else {
+               element = WEBKIT_DOM_ELEMENT (node);
+       }
+
+       style = webkit_dom_element_get_style (element);
+       value = webkit_dom_css_style_declaration_get_property_value (
+                               style, "text-align");
+
+       if (!value || !*value ||
+           (g_ascii_strncasecmp (value, "left", 4) == 0)) {
+               alignment = E_EDITOR_SELECTION_ALIGNMENT_LEFT;
+       } else if (g_ascii_strncasecmp (value, "center", 6) == 0) {
+               alignment = E_EDITOR_SELECTION_ALIGNMENT_CENTER;
+       } else if (g_ascii_strncasecmp (value, "right", 5) == 0) {
+               alignment = E_EDITOR_SELECTION_ALIGNMENT_RIGHT;
+       } else {
+               alignment = E_EDITOR_SELECTION_ALIGNMENT_LEFT;
+       }
+
+       g_free (value);
+
+       return alignment;
+}
+
+void
+e_editor_selection_set_alignment (EEditorSelection *selection,
+                                 EEditorSelectionAlignment alignment)
+{
+       WebKitDOMDocument *document;
+       const gchar *command;
+
+       g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
+
+       if (e_editor_selection_get_alignment (selection) == alignment) {
+               return;
+       }
+
+       switch (alignment) {
+               case E_EDITOR_SELECTION_ALIGNMENT_CENTER:
+                       command = "justifyCenter";
+                       break;
+
+               case E_EDITOR_SELECTION_ALIGNMENT_LEFT:
+                       command = "justifyLeft";
+                       break;
+
+               case E_EDITOR_SELECTION_ALIGNMENT_RIGHT:
+                       command = "justifyRight";
+                       break;
+       }
+
+       document = webkit_web_view_get_dom_document (selection->priv->webview);
+       webkit_dom_document_exec_command (document, command, FALSE, "");
+
+       g_object_notify (G_OBJECT (selection), "alignment");
+}
+
+
 const gchar *
 e_editor_selection_get_background_color        (EEditorSelection *selection)
 {
diff --git a/e-util/e-editor-selection.h b/e-util/e-editor-selection.h
index 8c6dccc..8e732c2 100644
--- a/e-util/e-editor-selection.h
+++ b/e-util/e-editor-selection.h
@@ -99,6 +99,13 @@ GType                        e_editor_selection_get_type     (void);
 
 EEditorSelection *     e_editor_selection_new          (WebKitWebView *parent_view);
 
+void                   e_editor_selection_set_alignment
+                                                       (EEditorSelection *selection,
+                                                        EEditorSelectionAlignment alignment);
+EEditorSelectionAlignment
+                       e_editor_selection_get_alignment
+                                                       (EEditorSelection *selection);
+
 void                   e_editor_selection_set_background_color
                                                        (EEditorSelection *selection,
                                                         const gchar *color);