[evolution/wip/webkit-composer: 74/372] Refactor EEditorSelection and add API to insert content

[Tomas Popela <tpopela src gnome org>]

commit 1d3ec2110d71d1ce616c637b1e82738e97eee1b1
Author: Dan Vrátil <dvratil redhat com>
Date:   Thu Jul 26 21:12:46 2012 +0200

    Refactor EEditorSelection and add API to insert content

 e-util/e-editor-selection.c |  175 ++++++++++++++++++++++++++++++-------------
 e-util/e-editor-selection.h |    8 ++-
 2 files changed, 130 insertions(+), 53 deletions(-)
---
diff --git a/e-util/e-editor-selection.c b/e-util/e-editor-selection.c
index f173118..579dc3f 100644
--- a/e-util/e-editor-selection.c
+++ b/e-util/e-editor-selection.c
@@ -35,7 +35,6 @@
 struct _EEditorSelectionPrivate {
 
        WebKitWebView *webview;
-       WebKitDOMRange *range;
 
        gchar *text;
        gchar *background_color;
@@ -66,20 +65,43 @@ enum {
        PROP_UNDERLINE,
 };
 
+static WebKitDOMRange *
+editor_selection_get_current_range (EEditorSelection *selection)
+{
+       WebKitDOMDocument *document;
+       WebKitDOMDOMWindow *window;
+       WebKitDOMDOMSelection *dom_selection;
+
+       document = webkit_web_view_get_dom_document (selection->priv->webview);
+       window = webkit_dom_document_get_default_view (document);
+       dom_selection = webkit_dom_dom_window_get_selection (window);
+       if (webkit_dom_dom_selection_get_range_count (dom_selection) < 1)
+               return NULL;
+
+       return webkit_dom_dom_selection_get_range_at (dom_selection, 0, NULL);
+}
+
 static gboolean
 get_has_style_property (EEditorSelection *selection,
                        const gchar *style,
                        const gchar *value)
 {
        WebKitDOMNode *node;
+       WebKitDOMElement *element;
+       WebKitDOMRange *range;
        WebKitDOMCSSStyleDeclaration *css;
        gchar *style_value;
        gboolean result;
 
-       node = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
+       range = editor_selection_get_current_range (selection);
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
+       if (!WEBKIT_DOM_IS_ELEMENT (node)) {
+               element = webkit_dom_node_get_parent_element (node);
+       } else {
+               element = WEBKIT_DOM_ELEMENT (node);
+       }
 
-       css = webkit_dom_element_get_style (WEBKIT_DOM_ELEMENT (node));
+       css = webkit_dom_element_get_style (element);
        style_value = webkit_dom_css_style_declaration_get_property_value (
                        css, style);
 
@@ -93,19 +115,6 @@ static void
 webview_selection_changed (WebKitWebView *webview,
                           EEditorSelection *selection)
 {
-       WebKitDOMDocument *doc;
-       WebKitDOMDOMWindow *window;
-       WebKitDOMDOMSelection *sel;
-
-       g_clear_object (&selection->priv->range);
-
-       doc = webkit_web_view_get_dom_document (webview);
-       window = webkit_dom_document_get_default_view (doc);
-       sel = webkit_dom_dom_window_get_selection (window);
-
-       selection->priv->range =
-               webkit_dom_dom_selection_get_range_at (sel, 0, NULL);
-
        g_object_notify (G_OBJECT (selection), "background-color");
        g_object_notify (G_OBJECT (selection), "bold");
        g_object_notify (G_OBJECT (selection), "font-name");
@@ -216,7 +225,7 @@ e_editor_selection_set_property (GObject *object,
                case PROP_WEBVIEW:
                        editor_selection_set_webview (
                                selection, g_value_get_object (value));
-                       break;
+                       return;
 
                case PROP_BACKGROUND_COLOR:
                        e_editor_selection_set_background_color (
@@ -277,7 +286,6 @@ e_editor_selection_finalize (GObject *object)
 {
        EEditorSelection *selection = E_EDITOR_SELECTION (object);
 
-       g_clear_object (&selection->priv->range);
        g_clear_object (&selection->priv->webview);
 
        g_free (selection->priv->text);
@@ -289,6 +297,8 @@ e_editor_selection_class_init (EEditorSelectionClass *klass)
 {
        GObjectClass *object_class;
 
+       g_type_class_add_private (klass, sizeof (EEditorSelectionPrivate));
+
        object_class = G_OBJECT_CLASS (klass);
        object_class->get_property = e_editor_selection_get_property;
        object_class->set_property = e_editor_selection_set_property;
@@ -448,12 +458,16 @@ e_editor_selection_new (WebKitWebView *parent_view)
 
 
 const gchar *
-e_editor_selection_get_string(EEditorSelection *selection)
+e_editor_selection_get_string (EEditorSelection *selection)
 {
+       WebKitDOMRange *range;
+
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), NULL);
 
+       range = editor_selection_get_current_range (selection);
+
        g_free (selection->priv->text);
-       selection->priv->text = webkit_dom_range_get_text (selection->priv->range);
+       selection->priv->text = webkit_dom_range_get_text (range);
 
        return selection->priv->text;
 }
@@ -463,27 +477,31 @@ e_editor_selection_replace (EEditorSelection *selection,
                            const gchar *new_string)
 {
        WebKitDOMDocumentFragment *frag;
+       WebKitDOMRange *range;
 
        g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
 
+       range = editor_selection_get_current_range (selection);
+
        frag = webkit_dom_range_create_contextual_fragment (
-                       selection->priv->range, new_string, NULL);
+                       range, new_string, NULL);
 
-       webkit_dom_range_delete_contents (selection->priv->range, NULL);
-       webkit_dom_range_insert_node (
-               selection->priv->range, WEBKIT_DOM_NODE (frag), NULL);
+       webkit_dom_range_delete_contents (range, NULL);
+       webkit_dom_range_insert_node (range, WEBKIT_DOM_NODE (frag), NULL);
 }
 
 const gchar *
 e_editor_selection_get_background_color        (EEditorSelection *selection)
 {
        WebKitDOMNode *ancestor;
+       WebKitDOMRange *range;
        WebKitDOMCSSStyleDeclaration *css;
 
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), NULL);
 
-       ancestor = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
+       range = editor_selection_get_current_range (selection);
+
+       ancestor = webkit_dom_range_get_common_ancestor_container (range, NULL);
 
        css = webkit_dom_element_get_style (WEBKIT_DOM_ELEMENT (ancestor));
        selection->priv->background_color =
@@ -513,14 +531,15 @@ EEditorSelectionBlockFormat
 e_editor_selection_get_block_format (EEditorSelection *selection)
 {
        WebKitDOMNode *node;
+       WebKitDOMRange *range;
        gchar *tmp, *node_name;
        EEditorSelectionBlockFormat result;
 
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection),
                              E_EDITOR_SELECTION_BLOCK_FORMAT_NONE);
 
-       node = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
+       range = editor_selection_get_current_range (selection);
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
 
        tmp = webkit_dom_node_get_node_name (node);
        node_name = g_ascii_strdown (tmp, -1);
@@ -605,7 +624,7 @@ e_editor_selection_set_block_format (EEditorSelection *selection,
                        document, "formatBlock", FALSE, value);
        } else {
                webkit_dom_document_exec_command (
-                       document, "removeFormat", FALSE, NULL);
+                       document, "removeFormat", FALSE, "");
        }
 
        g_object_notify (G_OBJECT (selection), "block-format");
@@ -634,7 +653,7 @@ e_editor_selection_set_bold (EEditorSelection *selection,
        }
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "bold", FALSE, NULL);
+       webkit_dom_document_exec_command (document, "bold", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "bold");
 }
@@ -643,13 +662,13 @@ const gchar *
 e_editor_selection_get_font_color (EEditorSelection *selection)
 {
        WebKitDOMNode *node;
+       WebKitDOMRange *range;
        WebKitDOMCSSStyleDeclaration *css;
 
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), NULL);
 
-       node = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
-
+       range = editor_selection_get_current_range (selection);
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
 
        g_free (selection->priv->font_color);
        css = webkit_dom_element_get_style (WEBKIT_DOM_ELEMENT (node));
@@ -668,7 +687,7 @@ e_editor_selection_set_font_color (EEditorSelection *selection,
        g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "foreColor", FALSE, color);
+       webkit_dom_document_exec_command (document, "foreColor", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "font-color");
 }
@@ -677,13 +696,13 @@ const gchar *
 e_editor_selection_get_font_name (EEditorSelection *selection)
 {
        WebKitDOMNode *node;
+       WebKitDOMRange *range;
        WebKitDOMCSSStyleDeclaration *css;
 
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), NULL);
 
-       node = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
-
+       range = editor_selection_get_current_range (selection);
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
 
        g_free (selection->priv->font_family);
        css = webkit_dom_element_get_style (WEBKIT_DOM_ELEMENT (node));
@@ -702,7 +721,7 @@ e_editor_selection_set_font_name (EEditorSelection *selection,
        g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "fontName", FALSE, font_name);
+       webkit_dom_document_exec_command (document, "fontName", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "font-name");
 }
@@ -711,15 +730,15 @@ guint
 e_editor_selection_get_font_size (EEditorSelection *selection)
 {
        WebKitDOMNode *node;
+       WebKitDOMRange *range;
        WebKitDOMCSSStyleDeclaration *css;
        gchar *size;
        gint size_int;
 
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), 0);
 
-       node = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
-
+       range = editor_selection_get_current_range (selection);
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
 
        g_free (selection->priv->font_family);
        css = webkit_dom_element_get_style (WEBKIT_DOM_ELEMENT (node));
@@ -770,7 +789,7 @@ e_editor_selection_set_italic (EEditorSelection *selection,
        }
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "italic", FALSE, NULL);
+       webkit_dom_document_exec_command (document, "italic", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "italic");
 }
@@ -797,7 +816,7 @@ e_editor_selection_set_strike_through (EEditorSelection *selection,
        }
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "strikeThrough", FALSE, NULL);
+       webkit_dom_document_exec_command (document, "strikeThrough", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "strike-through");
 }
@@ -806,11 +825,12 @@ gboolean
 e_editor_selection_get_subscript (EEditorSelection *selection)
 {
        WebKitDOMNode *node;
+       WebKitDOMRange *range;
 
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), FALSE);
 
-       node = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
+       range = editor_selection_get_current_range (selection);
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
 
        while (node) {
                gchar *tag_name;
@@ -843,7 +863,7 @@ e_editor_selection_set_subscript (EEditorSelection *selection,
        }
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "subscript", FALSE, NULL);
+       webkit_dom_document_exec_command (document, "subscript", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "subscript");
 }
@@ -852,11 +872,12 @@ gboolean
 e_editor_selection_get_superscript (EEditorSelection *selection)
 {
        WebKitDOMNode *node;
+       WebKitDOMRange *range;
 
        g_return_val_if_fail (E_IS_EDITOR_SELECTION (selection), FALSE);
 
-       node = webkit_dom_range_get_common_ancestor_container (
-                       selection->priv->range, NULL);
+       range = editor_selection_get_current_range (selection);
+       node = webkit_dom_range_get_common_ancestor_container (range, NULL);
 
        while (node) {
                gchar *tag_name;
@@ -889,7 +910,7 @@ e_editor_selection_set_superscript (EEditorSelection *selection,
        }
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "superscript", FALSE, NULL);
+       webkit_dom_document_exec_command (document, "superscript", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "superscript");
 }
@@ -916,7 +937,59 @@ e_editor_selection_set_underline (EEditorSelection *selection,
        }
 
        document = webkit_web_view_get_dom_document (selection->priv->webview);
-       webkit_dom_document_exec_command (document, "underline", FALSE, NULL);
+       webkit_dom_document_exec_command (document, "underline", FALSE, "");
 
        g_object_notify (G_OBJECT (selection), "underline");
 }
+
+void
+e_editor_selection_insert_text (EEditorSelection *selection,
+                               const gchar *plain_text)
+{
+       WebKitDOMDocument *document;
+       WebKitDOMRange *range;
+       WebKitDOMElement *element;
+
+       g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
+       g_return_if_fail (plain_text != NULL);
+
+       range = editor_selection_get_current_range (selection);
+       document = webkit_web_view_get_dom_document (selection->priv->webview);
+       element = webkit_dom_document_create_element (document, "DIV", NULL);
+       webkit_dom_html_element_set_inner_text (
+               WEBKIT_DOM_HTML_ELEMENT (element), plain_text, NULL);
+
+       webkit_dom_range_insert_node (
+               range, webkit_dom_node_get_first_child (
+                       WEBKIT_DOM_NODE (element)), NULL);
+
+       g_object_unref (element);
+}
+
+void
+e_editor_selection_insert_html (EEditorSelection *selection,
+                               const gchar *html_text)
+{
+       WebKitDOMDocument *document;
+
+       g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
+       g_return_if_fail (html_text != NULL);
+
+       document = webkit_web_view_get_dom_document (selection->priv->webview);
+       webkit_dom_document_exec_command (
+                       document, "insertHTML", FALSE, html_text);
+}
+
+void
+e_editor_selection_insert_image (EEditorSelection *selection,
+                                const gchar *image_uri)
+{
+       WebKitDOMDocument *document;
+
+       g_return_if_fail (E_IS_EDITOR_SELECTION (selection));
+       g_return_if_fail (image_uri != NULL);
+
+       document = webkit_web_view_get_dom_document (selection->priv->webview);
+       webkit_dom_document_exec_command (
+                       document, "insertImage", FALSE, image_uri);
+}
diff --git a/e-util/e-editor-selection.h b/e-util/e-editor-selection.h
index c531319..176436e 100644
--- a/e-util/e-editor-selection.h
+++ b/e-util/e-editor-selection.h
@@ -167,9 +167,13 @@ const gchar *              e_editor_selection_get_string   (EEditorSelection *selection);
 void                   e_editor_selection_replace      (EEditorSelection *selection,
                                                         const gchar *new_string);
 
+void                   e_editor_selection_insert_html  (EEditorSelection *selection,
+                                                        const gchar *html_text);
+void                   e_editor_selection_insert_image (EEditorSelection *selection,
+                                                        const gchar *image_uri);
+void                   e_editor_selection_insert_text  (EEditorSelection *selection,
+                                                        const gchar *plain_text);
 
 G_END_DECLS
 
 #endif /* E_EDITOR_SELECTION_H */
-
-