Add keyboard shortcuts to reorder tabs left or right on Linux.

It's standard in GTK+ for tabbed interfaces to be reorderable
using ctrl+shift+pgup and ctrl+shift+pgdn (e.g., in Terminal).

The plumbing is included on all platforms, but the shortcut is
only hooked up on Linux.

BUG=21594

Review URL: http://codereview.chromium.org/194088


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@26125 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 14 insertions, 0 deletions

diff --git a/chrome/browser/tabs/tab_strip_model.cc b/chrome/browser/tabs/tab_strip_model.cc
index a10c9fe..baca9b0 100644
--- a/chrome/browser/tabs/tab_strip_model.cc
+++ b/chrome/browser/tabs/tab_strip_model.cc
@@ -433,6 +433,16 @@ void TabStripModel::SelectLastTab() {
   SelectTabContentsAt(count() - 1, true);
 }
 
+void TabStripModel::MoveTabNext() {
+  int new_index = std::min(selected_index_ + 1, count() - 1);
+  MoveTabContentsAt(selected_index_, new_index, true);
+}
+
+void TabStripModel::MoveTabPrevious() {
+  int new_index = std::max(selected_index_ - 1, 0);
+  MoveTabContentsAt(selected_index_, new_index, true);
+}
+
 Browser* TabStripModel::TearOffTabContents(TabContents* detached_contents,
                                            const gfx::Rect& window_bounds,
                                            const DockInfo& dock_info) {
diff --git a/chrome/browser/tabs/tab_strip_model.h b/chrome/browser/tabs/tab_strip_model.h
index 4f1d44b..b75a9f86 100644
--- a/chrome/browser/tabs/tab_strip_model.h
+++ b/chrome/browser/tabs/tab_strip_model.h
@@ -438,6 +438,10 @@ class TabStripModel : public NotificationObserver {
   // Selects the last tab in the tab strip.
   void SelectLastTab();
 
+  // Swap adjacent tabs.
+  void MoveTabNext();
+  void MoveTabPrevious();
+
   // View API //////////////////////////////////////////////////////////////////
 
   // The specified contents should be opened in a new tabstrip. Returns the