[evolution/wip/webkit-composer: 202/262] Bug #689780 - [webkit-composer] Color combo out of sync with text color

[Tomas Popela <tpopela src gnome org>]

commit 063448a34092ccd1cd3fd6b475c49a9fc5a1b217
Author: Tomas Popela <tpopela redhat com>
Date:   Fri Jun 21 14:41:05 2013 +0200

    Bug #689780 - [webkit-composer] Color combo out of sync with text color
    
    Actually all the composer settings regarding to fonts (color, boldness, ...)
    were not re-set when the format was changed. Also detection of some font properities
    as e.g. boldness was rewritten for usage of CSS properities instead of looking for
    element tags for these properities (e.g. <b> for boldness). The old system was not
    working properly in some cases e.g. when we are setting the font format as bold
    and after that to italic it could end with <b> tag with style attribute set with
    font-style=italic entry. So in that case the lookup for <i> tag will fail. Also some
    code style changes were done.

 e-util/e-editor-selection.c |  261 +++++++++++++++++++++++++++++++++++++------
 1 files changed, 228 insertions(+), 33 deletions(-)
---
diff --git a/e-util/e-editor-selection.c b/e-util/e-editor-selection.c
index 2ee5e59..760d884 100644
--- a/e-util/e-editor-selection.c
+++ b/e-util/e-editor-selection.c
@@ -55,6 +55,13 @@ struct _EEditorSelectionPrivate {
        gulong selection_changed_handler_id;
 
        gchar *text;
+
+       gboolean is_bold;
+       gboolean is_italic;
+       gboolean is_underline;
+       gboolean is_monospaced;
+       gboolean is_strike_through;
+
        gchar *background_color;
        gchar *font_color;
        gchar *font_family;
@@ -62,6 +69,9 @@ struct _EEditorSelectionPrivate {
        gulong selection_offset;
 
        gint word_wrap_length;
+       guint font_size;
+
+       EEditorSelectionAlignment alignment;
 };
 
 enum {
@@ -109,7 +119,7 @@ editor_selection_get_current_range (EEditorSelection *selection)
 
        document = webkit_web_view_get_dom_document (web_view);
        window = webkit_dom_document_get_default_view (document);
-       if (window == NULL)
+       if (!window)
                goto exit;
 
        dom_selection = webkit_dom_dom_window_get_selection (window);
@@ -135,7 +145,7 @@ get_has_style (EEditorSelection *selection,
        gint tag_len;
 
        range = editor_selection_get_current_range (selection);
-       if (range == NULL)
+       if (!range)
                return FALSE;
 
        node = webkit_dom_range_get_start_container (range, NULL);
@@ -197,12 +207,12 @@ get_font_property (EEditorSelection *selection,
        gchar *value;
 
        range = editor_selection_get_current_range (selection);
-       if (range == NULL)
+       if (!range)
                return NULL;
 
        node = webkit_dom_range_get_common_ancestor_container (range, NULL);
        element = e_editor_dom_node_find_parent_element (node, "FONT");
-       if (element == NULL)
+       if (!element)
                return NULL;
 
        g_object_get (G_OBJECT (element), font_property, &value, NULL);
@@ -500,6 +510,9 @@ editor_selection_finalize (GObject *object)
        EEditorSelection *selection = E_EDITOR_SELECTION (object);
 
        g_free (selection->priv->text);
+       g_free (selection->priv->background_color);
+       g_free (selection->priv->font_color);
+       g_free (selection->priv->font_family);
 
        /* Chain up to parent's finalize() method. */
        G_OBJECT_CLASS (e_editor_selection_parent_class)->finalize (object);
@@ -799,7 +812,6 @@ e_editor_selection_init (EEditorSelection *selection)
        g_settings = g_settings_new ("org.gnome.evolution.mail");
        selection->priv->word_wrap_length = g_settings_get_int (g_settings, "composer-word-wrap-length");
        g_object_unref (g_settings);
-
 }
 
 /**
@@ -946,6 +958,8 @@ e_editor_selection_get_string (EEditorSelection *selection)
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), NULL);
 
        range = editor_selection_get_current_range (selection);
+       if (!range)
+               return NULL;
 
        g_free (selection->priv->text);
        selection->priv->text = webkit_dom_range_get_text (range);
@@ -1002,11 +1016,11 @@ e_editor_selection_get_alignment (EEditorSelection *selection)
                E_EDITOR_SELECTION_ALIGNMENT_LEFT);
 
        range = editor_selection_get_current_range (selection);
-       if (range == NULL)
+       if (!range)
                return E_EDITOR_SELECTION_ALIGNMENT_LEFT;
 
        node = webkit_dom_range_get_start_container (range, NULL);
-       if (node == NULL)
+       if (!node)
                return E_EDITOR_SELECTION_ALIGNMENT_LEFT;
 
        if (WEBKIT_DOM_IS_ELEMENT (node))
@@ -1067,6 +1081,8 @@ e_editor_selection_set_alignment (EEditorSelection *selection,
                        break;
        }
 
+       selection->priv->alignment = alignment;
+
        editor_widget = e_editor_selection_ref_editor_widget (selection);
        g_return_if_fail (editor_widget != NULL);
 
@@ -1157,7 +1173,7 @@ e_editor_selection_get_block_format (EEditorSelection *selection)
                E_EDITOR_SELECTION_BLOCK_FORMAT_PARAGRAPH);
 
        range = editor_selection_get_current_range (selection);
-       if (range == NULL)
+       if (!range)
                return E_EDITOR_SELECTION_BLOCK_FORMAT_PARAGRAPH;
 
        node = webkit_dom_range_get_start_container (range, NULL);
@@ -1289,6 +1305,10 @@ e_editor_selection_set_block_format (EEditorSelection *selection,
                        break;
        }
 
+       /* H1 - H6 have bold font by default */
+       if (format >= E_EDITOR_SELECTION_BLOCK_FORMAT_H1 && format <= E_EDITOR_SELECTION_BLOCK_FORMAT_H6)
+               selection->priv->is_bold = TRUE;
+
        editor_widget = e_editor_selection_ref_editor_widget (selection);
        g_return_if_fail (editor_widget != NULL);
 
@@ -1383,10 +1403,10 @@ e_editor_selection_set_block_format (EEditorSelection *selection,
                node = webkit_dom_range_get_start_container (range, NULL);
 
                list = e_editor_dom_node_find_child_element (node, "OL");
-               if (list == NULL)
+               if (!list)
                        list = e_editor_dom_node_find_parent_element (node, "OL");
 
-               if (list != NULL) {
+               if (list) {
                        webkit_dom_element_set_attribute (
                                list, "type",
                                (format == E_EDITOR_SELECTION_BLOCK_FORMAT_ORDERED_LIST_ALPHA) ?
@@ -1404,16 +1424,20 @@ e_editor_selection_set_block_format (EEditorSelection *selection,
                node = webkit_dom_range_get_start_container (range, NULL);
 
                paragraph = e_editor_dom_node_find_child_element (node, "P");
-               if (paragraph == NULL)
+               if (!paragraph)
                        paragraph = e_editor_dom_node_find_parent_element (node, "P");
 
-               if (paragraph != NULL) {
-                       webkit_dom_element_set_class_name (WEBKIT_DOM_ELEMENT (paragraph), 
"-x-evo-paragraph");
+               if (paragraph) {
+                       webkit_dom_element_set_class_name (WEBKIT_DOM_ELEMENT (paragraph),
+                                                          "-x-evo-paragraph");
                }
        }
 
        g_object_unref (editor_widget);
 
+       /* When changing the format we need to re-set the alignment */
+       e_editor_selection_set_alignment (selection, selection->priv->alignment);
+
        g_object_notify (G_OBJECT (selection), "block-format");
 }
 
@@ -1432,10 +1456,14 @@ e_editor_selection_get_font_color (EEditorSelection *selection,
        gchar *color;
        g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
 
-       color = get_font_property (selection, "color");
-       if (!color) {
-               *rgba = black;
-               return;
+       if (g_strcmp0 (e_editor_selection_get_string (selection), "") == 0) {
+               color = g_strdup (selection->priv->font_color);
+       } else {
+               color = get_font_property (selection, "color");
+               if (!color) {
+                       *rgba = black;
+                       return;
+               }
        }
 
        gdk_rgba_parse (rgba, color);
@@ -1461,7 +1489,7 @@ e_editor_selection_set_font_color (EEditorSelection *selection,
 
        g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
 
-       if (rgba == NULL)
+       if (!rgba)
                rgba = &black;
 
        rgba_value = e_rgba_to_value ((GdkRGBA *) rgba);
@@ -1471,6 +1499,7 @@ e_editor_selection_set_font_color (EEditorSelection *selection,
 
        command = E_EDITOR_WIDGET_COMMAND_FORE_COLOR;
        color = g_strdup_printf ("#%06x", rgba_value);
+       selection->priv->font_color = g_strdup (color);
        e_editor_widget_exec_command (editor_widget, command, color);
        g_free (color);
 
@@ -1545,24 +1574,26 @@ e_editor_selection_set_font_name (EEditorSelection *selection,
  guint
 e_editor_selection_get_font_size (EEditorSelection *selection)
 {
-       gchar *size;
-       gint size_int;
+       guint size_int;
 
        g_return_val_if_fail (
                E_IS_EDITOR_SELECTION (selection),
                E_EDITOR_SELECTION_FONT_SIZE_NORMAL);
 
-       size = get_font_property (selection, "size");
-       if (!size) {
-               return E_EDITOR_SELECTION_FONT_SIZE_NORMAL;
-       }
+       if (g_strcmp0 (e_editor_selection_get_string (selection), "") == 0) {
+               size_int = selection->priv->font_size;
+       } else {
+               gchar *size = get_font_property (selection, "size");
+               if (!size) {
+                       return E_EDITOR_SELECTION_FONT_SIZE_NORMAL;
+               }
 
-       size_int = atoi (size);
-       g_free (size);
+               size_int = atoi (size);
+               g_free (size);
+       }
 
-       if (size_int == 0) {
+       if (size_int == 0)
                return E_EDITOR_SELECTION_FONT_SIZE_NORMAL;
-       }
 
        return size_int;
 }
@@ -1588,6 +1619,7 @@ e_editor_selection_set_font_size (EEditorSelection *selection,
        editor_widget = e_editor_selection_ref_editor_widget (selection);
        g_return_if_fail (editor_widget != NULL);
 
+       selection->priv->font_size = font_size;
        command = E_EDITOR_WIDGET_COMMAND_FONT_SIZE;
        size_str = g_strdup_printf ("%d", font_size);
        e_editor_widget_exec_command (editor_widget, command, size_str);
@@ -1696,9 +1728,44 @@ e_editor_selection_unindent (EEditorSelection *selection)
 gboolean
 e_editor_selection_is_bold (EEditorSelection *selection)
 {
+       gboolean ret_val;
+       gchar *value;
+       EEditorWidget *editor_widget;
+       WebKitDOMCSSStyleDeclaration *style;
+       WebKitDOMDocument *document;
+       WebKitDOMDOMWindow *window;
+       WebKitDOMNode *node;
+       WebKitDOMRange *range;
+
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), FALSE);
 
-       return get_has_style (selection, "b");
+       editor_widget = e_editor_selection_ref_editor_widget (selection);
+       g_return_val_if_fail (editor_widget != NULL, FALSE);
+
+       range = editor_selection_get_current_range (selection);
+       if (!range)
+               return FALSE;
+
+       document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (editor_widget));
+       window = webkit_dom_document_get_default_view (document);
+
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
+       /* If we are changing the format of block we have to re-set bold property,
+        * otherwise it will be turned off because of no text in composer */
+       if (g_strcmp0 (webkit_dom_node_get_text_content (node), "") == 0)
+               return selection->priv->is_bold;
+
+       style = webkit_dom_dom_window_get_computed_style (
+                       window, webkit_dom_node_get_parent_element (node), NULL);
+       value = webkit_dom_css_style_declaration_get_property_value (style, "font-weight");
+
+       if (g_strstr_len (value, -1, "normal"))
+               ret_val = FALSE;
+       else
+               ret_val = TRUE;
+
+       g_free (value);
+       return ret_val;
 }
 
 /**
@@ -1721,6 +1788,8 @@ e_editor_selection_set_bold (EEditorSelection *selection,
        if (e_editor_selection_is_bold (selection) == bold)
                return;
 
+       selection->priv->is_bold = bold;
+
        editor_widget = e_editor_selection_ref_editor_widget (selection);
        g_return_if_fail (editor_widget != NULL);
 
@@ -1744,9 +1813,44 @@ e_editor_selection_set_bold (EEditorSelection *selection,
 gboolean
 e_editor_selection_is_italic (EEditorSelection *selection)
 {
+       gboolean ret_val;
+       gchar *value;
+       EEditorWidget *editor_widget;
+       WebKitDOMCSSStyleDeclaration *style;
+       WebKitDOMDocument *document;
+       WebKitDOMDOMWindow *window;
+       WebKitDOMNode *node;
+       WebKitDOMRange *range;
+
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), FALSE);
 
-       return get_has_style (selection, "i");
+       editor_widget = e_editor_selection_ref_editor_widget (selection);
+       g_return_val_if_fail (editor_widget != NULL, FALSE);
+
+       range = editor_selection_get_current_range (selection);
+       if (!range)
+               return FALSE;
+
+       document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (editor_widget));
+       window = webkit_dom_document_get_default_view (document);
+
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
+       /* If we are changing the format of block we have to re-set italic property,
+        * otherwise it will be turned off because of no text in composer */
+       if (g_strcmp0 (webkit_dom_node_get_text_content (node), "") == 0)
+               return selection->priv->is_italic;
+
+       style = webkit_dom_dom_window_get_computed_style (
+                       window, webkit_dom_node_get_parent_element (node), NULL);
+       value = webkit_dom_css_style_declaration_get_property_value (style, "font-style");
+
+       if (g_strstr_len (value, -1, "italic"))
+               ret_val = TRUE;
+       else
+               ret_val = FALSE;
+
+       g_free (value);
+       return ret_val;
 }
 
 /**
@@ -1769,6 +1873,8 @@ e_editor_selection_set_italic (EEditorSelection *selection,
        if (e_editor_selection_is_italic (selection) == italic)
                return;
 
+       selection->priv->is_italic = italic;
+
        editor_widget = e_editor_selection_ref_editor_widget (selection);
        g_return_if_fail (editor_widget != NULL);
 
@@ -1792,8 +1898,21 @@ e_editor_selection_set_italic (EEditorSelection *selection,
 gboolean
 e_editor_selection_is_monospaced (EEditorSelection *selection)
 {
+       WebKitDOMRange *range;
+       WebKitDOMNode *node;
+
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), FALSE);
 
+       range = editor_selection_get_current_range (selection);
+       if (!range)
+               return FALSE;
+
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
+       /* If we are changing the format of block we have to re-set monospaced property,
+        * otherwise it will be turned off because of no text in composer */
+       if (g_strcmp0 (webkit_dom_node_get_text_content (node), "") == 0)
+               return selection->priv->is_monospaced;
+
        return get_has_style (selection, "tt");
 }
 
@@ -1821,8 +1940,10 @@ e_editor_selection_set_monospaced (EEditorSelection *selection,
        if (e_editor_selection_is_monospaced (selection) == monospaced)
                return;
 
+       selection->priv->is_monospaced = monospaced;
+
        range = editor_selection_get_current_range (selection);
-       if (range == NULL)
+       if (!range)
                return;
 
        editor_widget = e_editor_selection_ref_editor_widget (selection);
@@ -1935,9 +2056,44 @@ e_editor_selection_set_monospaced (EEditorSelection *selection,
 gboolean
 e_editor_selection_is_strike_through (EEditorSelection *selection)
 {
+       gboolean ret_val;
+       gchar *value;
+       EEditorWidget *editor_widget;
+       WebKitDOMCSSStyleDeclaration *style;
+       WebKitDOMDocument *document;
+       WebKitDOMDOMWindow *window;
+       WebKitDOMNode *node;
+       WebKitDOMRange *range;
+
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), FALSE);
 
-       return get_has_style (selection, "strike");
+       editor_widget = e_editor_selection_ref_editor_widget (selection);
+       g_return_val_if_fail (editor_widget != NULL, FALSE);
+
+       range = editor_selection_get_current_range (selection);
+       if (!range)
+               return FALSE;
+
+       document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (editor_widget));
+       window = webkit_dom_document_get_default_view (document);
+
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
+       /* If we are changing the format of block we have to re-set strike-through property,
+        * otherwise it will be turned off because of no text in composer */
+       if (g_strcmp0 (webkit_dom_node_get_text_content (node), "") == 0)
+               return selection->priv->is_strike_through;
+
+       style = webkit_dom_dom_window_get_computed_style (
+                       window, webkit_dom_node_get_parent_element (node), NULL);
+       value = webkit_dom_css_style_declaration_get_property_value (style, "text-decoration");
+
+       if (g_strstr_len (value, -1, "line-through"))
+               ret_val = TRUE;
+       else
+               ret_val = get_has_style (selection, "strike");
+
+       g_free (value);
+       return ret_val;
 }
 
 /**
@@ -1960,6 +2116,8 @@ e_editor_selection_set_strike_through (EEditorSelection *selection,
        if (e_editor_selection_is_strike_through (selection) == strike_through)
                return;
 
+       selection->priv->is_strike_through = strike_through;
+
        editor_widget = e_editor_selection_ref_editor_widget (selection);
        g_return_if_fail (editor_widget != NULL);
 
@@ -2119,9 +2277,44 @@ e_editor_selection_set_superscript (EEditorSelection *selection,
 gboolean
 e_editor_selection_is_underline (EEditorSelection *selection)
 {
+       gboolean ret_val;
+       gchar *value;
+       EEditorWidget *editor_widget;
+       WebKitDOMCSSStyleDeclaration *style;
+       WebKitDOMDocument *document;
+       WebKitDOMDOMWindow *window;
+       WebKitDOMNode *node;
+       WebKitDOMRange *range;
+
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), FALSE);
 
-       return get_has_style (selection, "u");
+       editor_widget = e_editor_selection_ref_editor_widget (selection);
+       g_return_val_if_fail (editor_widget != NULL, FALSE);
+
+       range = editor_selection_get_current_range (selection);
+       if (!range)
+               return FALSE;
+
+       document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (editor_widget));
+       window = webkit_dom_document_get_default_view (document);
+
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
+       /* If we are changing the format of block we have to re-set underline property,
+        * otherwise it will be turned off because of no text in composer */
+       if (g_strcmp0 (webkit_dom_node_get_text_content (node), "") == 0)
+               return selection->priv->is_underline;
+
+       style = webkit_dom_dom_window_get_computed_style (
+                       window, webkit_dom_node_get_parent_element (node), NULL);
+       value = webkit_dom_css_style_declaration_get_property_value (style, "text-decoration");
+
+       if (g_strstr_len (value, -1, "underline"))
+               ret_val = TRUE;
+       else
+               ret_val = get_has_style (selection, "u");
+
+       g_free (value);
+       return ret_val;
 }
 
 /**
@@ -2144,6 +2337,8 @@ e_editor_selection_set_underline (EEditorSelection *selection,
        if (e_editor_selection_is_underline (selection) == underline)
                return;
 
+       selection->priv->is_underline = underline;
+
        editor_widget = e_editor_selection_ref_editor_widget (selection);
        g_return_if_fail (editor_widget != NULL);