[gnome-builder] Bug 766830 - Shortcut keys - duplicate

[Christian Hergert <chergert src gnome org>]

commit e99fda0841ba43b5426954f91ea1aa1fc82a8cdf
Author: Raunaq Abhyankar <raunaq abhyankar gmail com>
Date:   Mon May 30 18:05:52 2016 +0530

    Bug 766830 - Shortcut keys - duplicate
    
    Implemented function to duplicate entire line or selected text using keyboard binding ctrl+alt+d.
    Also added the keybinding in shortcut window.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=766830

 data/keybindings/default.css               |    1 +
 libide/keybindings/ide-shortcuts-window.ui |    7 ++++
 libide/sourceview/ide-source-view.c        |   55 ++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 0 deletions(-)
---
diff --git a/data/keybindings/default.css b/data/keybindings/default.css
index 1412eec..b0f9431 100644
--- a/data/keybindings/default.css
+++ b/data/keybindings/default.css
@@ -23,6 +23,7 @@
   bind "<ctrl>l" { "change-case" (lower) };
   bind "<ctrl>i" { "action" ("view", "goto-line", "") };
   bind "<ctrl>asciitilde" { "change-case" (toggle) };
+  bind "<ctrl><alt>d" { "duplicate-entire-line" ()};
 
   bind "<ctrl>minus" { "decrease-font-size" () };
   bind "<ctrl>plus" { "increase-font-size" () };
diff --git a/libide/keybindings/ide-shortcuts-window.ui b/libide/keybindings/ide-shortcuts-window.ui
index 0bd6173..a801996 100644
--- a/libide/keybindings/ide-shortcuts-window.ui
+++ b/libide/keybindings/ide-shortcuts-window.ui
@@ -210,6 +210,13 @@
                 <property name="title" translatable="yes" context="shortcut window">Paste text from 
clipboard</property>
               </object>
             </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">1</property>
+                <property name="accelerator">&lt;ctrl&gt;&lt;alt&gt;d</property>
+                <property name="title" translatable="yes" context="shortcut window">Duplicate current line 
or selection</property>
+              </object>
+            </child>
           </object>
         </child>
         <child>
diff --git a/libide/sourceview/ide-source-view.c b/libide/sourceview/ide-source-view.c
index 1d9089b..c2825aa 100644
--- a/libide/sourceview/ide-source-view.c
+++ b/libide/sourceview/ide-source-view.c
@@ -247,6 +247,7 @@ enum {
   CLEAR_SEARCH,
   CLEAR_SELECTION,
   CLEAR_SNIPPETS,
+  DUPLICATE_ENTIRE_LINE,
   CYCLE_COMPLETION,
   DECREASE_FONT_SIZE,
   DELETE_SELECTION,
@@ -3063,6 +3064,51 @@ ide_source_view_real_insert_modifier (IdeSourceView *self,
 }
 
 static void
+ide_source_view_real_duplicate_entire_line (IdeSourceView *self)
+{
+  GtkTextView *text_view = (GtkTextView *)self;
+  GtkTextIter begin, end;
+  gboolean selected;
+  g_autofree gchar *text = NULL;
+  g_autofree gchar *duplicate_line = NULL;
+  GtkTextMark *cursor;
+  GtkTextBuffer *buffer;
+
+  g_assert (GTK_IS_TEXT_VIEW (text_view));
+  g_assert (IDE_IS_SOURCE_VIEW (self));
+
+  buffer = gtk_text_view_get_buffer (text_view);
+  cursor = gtk_text_buffer_get_insert (buffer);
+
+  gtk_text_buffer_begin_user_action (buffer);
+
+  selected = gtk_text_buffer_get_selection_bounds (buffer, &begin, &end);
+
+  if (selected)
+    {
+      duplicate_line = gtk_text_iter_get_text (&begin, &end);
+      gtk_text_buffer_insert (buffer, &begin, duplicate_line, -1);
+    }
+  else
+    {
+      gtk_text_buffer_get_iter_at_mark (buffer, &begin, cursor);
+      end = begin;
+
+      gtk_text_iter_set_line_offset (&begin, 0);
+      gtk_text_iter_forward_to_line_end (&end);
+
+      if (gtk_text_iter_get_line (&begin) == gtk_text_iter_get_line (&end))
+        {
+          text = gtk_text_iter_get_text (&begin, &end);
+          duplicate_line = g_strconcat (text, "\n", NULL);
+          gtk_text_buffer_insert (buffer, &begin, duplicate_line, -1);
+        }
+    }
+
+  gtk_text_buffer_end_user_action (buffer);
+}
+
+static void
 ide_source_view_real_join_lines (IdeSourceView *self)
 {
   GtkTextBuffer *buffer;
@@ -6376,6 +6422,15 @@ ide_source_view_class_init (IdeSourceViewClass *klass)
                   G_TYPE_NONE,
                   0);
 
+  signals [DUPLICATE_ENTIRE_LINE] =
+    g_signal_new_class_handler ("duplicate-entire-line",
+                                G_TYPE_FROM_CLASS (klass),
+                                G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+                                G_CALLBACK (ide_source_view_real_duplicate_entire_line),
+                                NULL, NULL, NULL,
+                                G_TYPE_NONE,
+                                0);
+
   signals [REINDENT] =
     g_signal_new_class_handler ("reindent",
                                 G_TYPE_FROM_CLASS (klass),