[evolution/wip/webkit-composer: 272/372] Make functions that works with composer caret public.

[Tomas Popela <tpopela src gnome org>]

commit 5ebf872b95ee29dd3d78bbd7799d1cfe4ad6f741
Author: Tomas Popela <tpopela redhat com>
Date:   Tue Jul 2 11:21:05 2013 +0200

    Make functions that works with composer caret public.
    
    They will be utilized in other modules when we implement the savings of caret
    position while switching composer modes.

 e-util/e-editor-selection.c |   46 ++++++++++++++++++++++++++++++------------
 e-util/e-editor-selection.h |    6 +++++
 2 files changed, 39 insertions(+), 13 deletions(-)
---
diff --git a/e-util/e-editor-selection.c b/e-util/e-editor-selection.c
index 347f24d..c68f013 100644
--- a/e-util/e-editor-selection.c
+++ b/e-util/e-editor-selection.c
@@ -2506,8 +2506,14 @@ e_editor_selection_insert_image (EEditorSelection *selection,
        g_object_unref (editor_widget);
 }
 
-static void
-clear_caret_position_marker (EEditorSelection *selection)
+/**
+ * e_editor_selection_clear_caret_position_marker:
+ * @selection: an #EEditorSelection
+ *
+ * Removes previously set caret position marker from composer.
+ */
+void
+e_editor_selection_clear_caret_position_marker (EEditorSelection *selection)
 {
        EEditorWidget *widget;
        WebKitDOMDocument *document;
@@ -2532,8 +2538,14 @@ clear_caret_position_marker (EEditorSelection *selection)
        g_object_unref (widget);
 }
 
-static void
-save_caret_position (EEditorSelection *selection)
+/**
+ * e_editor_selection_save_caret_position:
+ * @selection: an #EEditorSelection
+ *
+ * Saves current caret position in composer.
+ */
+void
+e_editor_selection_save_caret_position (EEditorSelection *selection)
 {
        EEditorWidget *widget;
        WebKitDOMDocument *document;
@@ -2549,9 +2561,11 @@ save_caret_position (EEditorSelection *selection)
        g_return_if_fail (widget != NULL);
 
        document = webkit_web_view_get_dom_document (WEBKIT_WEB_VIEW (widget));
-       clear_caret_position_marker (selection);
+       e_editor_selection_clear_caret_position_marker (selection);
 
        range = editor_selection_get_current_range (selection);
+       if (!range)
+               return;
 
        start_offset = webkit_dom_range_get_start_offset (range, NULL);
        start_offset_node = webkit_dom_range_get_end_container (range, NULL);
@@ -2599,8 +2613,14 @@ move_caret_into_element (WebKitDOMDocument *document,
        webkit_dom_dom_selection_add_range (window_selection, new_range);
 }
 
-static void
-restore_caret_position (EEditorSelection *selection)
+/**
+ * e_editor_selection_restore_caret_position:
+ * @selection: an #EEditorSelection
+ *
+ * Restores previously saved caret position in composer.
+ */
+void
+e_editor_selection_restore_caret_position (EEditorSelection *selection)
 {
        EEditorWidget *widget;
        WebKitDOMDocument *document;
@@ -3048,7 +3068,7 @@ e_editor_selection_wrap_lines (EEditorSelection *selection,
                if (!range)
                        return;
 
-               save_caret_position (selection);
+               e_editor_selection_save_caret_position (selection);
 
                start_offset = webkit_dom_range_get_start_offset (range, NULL);
                /* Extend the range to include entire nodes */
@@ -3094,7 +3114,7 @@ e_editor_selection_wrap_lines (EEditorSelection *selection,
                                        }
                                } else {
                                        /* When some weird element is selected, return */
-                                       clear_caret_position_marker (selection);
+                                       e_editor_selection_clear_caret_position_marker (selection);
                                        return;
                                }
                        }
@@ -3119,14 +3139,14 @@ e_editor_selection_wrap_lines (EEditorSelection *selection,
                        if (g_utf8_strlen (e_editor_selection_get_string (selection), -1) < 
selection->priv->word_wrap_length) {
                                if (return_pressed) {
                                        active_paragraph = webkit_dom_document_get_element_by_id (document, 
"-x-evo-active-paragraph");
-                                       clear_caret_position_marker (selection);
+                                       e_editor_selection_clear_caret_position_marker (selection);
                                        move_caret_into_element (document, active_paragraph);
                                        webkit_dom_dom_selection_modify (window_selection, "move", "forward", 
"character");
                                        webkit_dom_element_remove_attribute (WEBKIT_DOM_ELEMENT 
(active_paragraph), "id");
                                } else {
                                        active_paragraph = webkit_dom_document_get_element_by_id (document, 
"-x-evo-active-paragraph");
                                        webkit_dom_element_remove_attribute (WEBKIT_DOM_ELEMENT 
(active_paragraph), "id");
-                                       restore_caret_position (selection);
+                                       e_editor_selection_restore_caret_position (selection);
                                }
                                return;
                        }
@@ -3193,11 +3213,11 @@ e_editor_selection_wrap_lines (EEditorSelection *selection,
        /* We have to move caret on position where it was before modifying the text */
        if (return_pressed) {
                active_paragraph = webkit_dom_document_get_element_by_id (document, 
"-x-evo-active-paragraph");
-               clear_caret_position_marker (selection);
+               e_editor_selection_clear_caret_position_marker (selection);
                move_caret_into_element (document, active_paragraph);
                webkit_dom_dom_selection_modify (window_selection, "move", "forward", "character");
        } else {
-               restore_caret_position (selection);
+               e_editor_selection_restore_caret_position (selection);
        }
 
        /* Set paragraph as non-active */
diff --git a/e-util/e-editor-selection.h b/e-util/e-editor-selection.h
index ae4834a..4c97de4 100644
--- a/e-util/e-editor-selection.h
+++ b/e-util/e-editor-selection.h
@@ -154,6 +154,12 @@ void               e_editor_selection_insert_image (EEditorSelection *selection,
                                                 const gchar *image_uri);
 void           e_editor_selection_insert_text  (EEditorSelection *selection,
                                                 const gchar *plain_text);
+void           e_editor_selection_clear_caret_position_marker
+                                               (EEditorSelection *selection);
+void           e_editor_selection_save_caret_position
+                                               (EEditorSelection *selection);
+void           e_editor_selection_restore_caret_position
+                                               (EEditorSelection *selection);
 void           e_editor_selection_wrap_lines   (EEditorSelection *selection,
                                                 gboolean while_typing,
                                                 GdkEventKey *event);