Linux: Attempt #2 at updating PRIMARY selection on Ctrl-C in omnibox.

chrome/browser/autocomplete/autocomplete_edit_view_gtk.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/autocomplete/autocomplete_edit_view_gtk.h"
 
 #include <gtk/gtk.h>
 #include <gdk/gdkkeysyms.h>
 
 #include <algorithm>
@@ skipping 192 matching lines @@
   g_signal_connect(text_view_, "size-request",
                    G_CALLBACK(&HandleViewSizeRequestThunk), this);
   g_signal_connect(text_view_, "populate-popup",
                    G_CALLBACK(&HandlePopulatePopupThunk), this);
   mark_set_handler_id_ = g_signal_connect(
       text_buffer_, "mark-set", G_CALLBACK(&HandleMarkSetThunk), this);
   g_signal_connect(text_view_, "drag-data-received",
                    G_CALLBACK(&HandleDragDataReceivedThunk), this);
   g_signal_connect(text_view_, "backspace",
                    G_CALLBACK(&HandleBackSpaceThunk), this);
+  g_signal_connect(text_view_, "copy-clipboard",
+                   G_CALLBACK(&HandleCopyClipboardThunk), this);
 
 #if !defined(TOOLKIT_VIEWS)
   registrar_.Add(this,
                  NotificationType::BROWSER_THEME_CHANGED,
                  NotificationService::AllSources());
   theme_provider_->InitThemesFor(this);
 #else
   // Manually invoke SetBaseColor() because TOOLKIT_VIEWS doesn't observe
   // themes.
   SetBaseColor();
@@ skipping 691 matching lines @@
 
   // We're showing a keyword and the user pressed backspace at the beginning
   // of the text. Delete the selected keyword.
   model_->ClearKeyword(GetText());
 
   // Stop propagating the signal emission into GtkTextView.
   static guint signal_id = g_signal_lookup("backspace", GTK_TYPE_TEXT_VIEW);
   g_signal_stop_emission(text_view_, signal_id, 0);
 }
 
+void AutocompleteEditViewGtk::HandleCopyClipboard() {
+  // On copy, we manually update the PRIMARY selection to contain the
+  // highlighted text.  This matches Firefox -- we highlight the URL but don't
+  // update PRIMARY on Ctrl-L, so Ctrl-L, Ctrl-C and then middle-click is a
+  // convenient way to paste the current URL somewhere.
+  if (!gtk_text_buffer_get_has_selection(text_buffer_))
+    return;
+
+  GtkClipboard* clipboard = gtk_clipboard_get(GDK_SELECTION_PRIMARY);
+  DCHECK(clipboard);
+  if (!clipboard)
+    return;
+
+  // Passing gtk_text_buffer_copy_clipboard() a text buffer that already owns
+  // the clipboard that's being updated clears the highlighted text, which we
+  // don't want to do (and it also appears to at least sometimes trigger a
+  // failed G_IS_OBJECT() assertion).
+  if (gtk_clipboard_get_owner(clipboard) == G_OBJECT(text_buffer_))
+    return;
+
+  // We can't just call SavePrimarySelection(); that makes the text view lose
+  // the selection and unhighlight its text.
+  gtk_text_buffer_copy_clipboard(text_buffer_, clipboard);
+}
+
 void AutocompleteEditViewGtk::SelectAllInternal(bool reversed,
                                                 bool update_primary_selection) {
   GtkTextIter start, end;
   if (reversed) {
     gtk_text_buffer_get_bounds(text_buffer_, &end, &start);
   } else {
     gtk_text_buffer_get_bounds(text_buffer_, &start, &end);
   }
   if (!update_primary_selection)
     StartUpdatingHighlightedText();
@@ skipping 115 matching lines @@
     const std::string& selected_text) {
   GtkClipboard* clipboard =
       gtk_widget_get_clipboard(text_view_, GDK_SELECTION_PRIMARY);
   DCHECK(clipboard);
   if (!clipboard)
     return;
 
   gtk_clipboard_set_text(
       clipboard, selected_text.data(), selected_text.size());
 }