Multi-tab selection for Linux.

chrome/browser/tabs/tab_strip_model.cc

Index: chrome/browser/tabs/tab_strip_model.cc
diff --git a/chrome/browser/tabs/tab_strip_model.cc b/chrome/browser/tabs/tab_strip_model.cc
index d1ded2fb870b424509045ebb4b63ded573a3a98a..4ec94b13618b2d8486fb72c84ca5259d2c70be03 100644
--- a/chrome/browser/tabs/tab_strip_model.cc
+++ b/chrome/browser/tabs/tab_strip_model.cc
@@ -569,8 +569,11 @@ int TabStripModel::ConstrainInsertionIndex(int index, bool mini_tab) {
 void TabStripModel::ExtendSelectionTo(int index) {
   DCHECK(ContainsIndex(index));
   int old_active = active_index();
+  std::vector<int> old_selected_indices(

[James Hawkins, 2011/05/18 18:03:10]

nit: You use indices here and indexes in the NotifyMultipleSelectionChanged
parameter; please pick one for consistency.

[dpapad, 2011/06/01 18:05:41]

Done.

+      selection_model().selected_indices());
   selection_model_.SetSelectionFromAnchorTo(index);
   // This may not have resulted in a change, but we assume it did.
+  NotifyMultipleSelectionChanged(old_selected_indices);
   NotifySelectionChanged(old_active);
 }
 
@@ -1235,6 +1238,20 @@ void TabStripModel::NotifySelectionChanged(int old_selected_index) {
                     TabSelectedAt(old_tab, new_tab, active_index(), true));
 }
 
+void TabStripModel::NotifyMultipleSelectionChanged(
+    const std::vector<int>& old_selected_indices) {
+  std::set<int> indices_affected;
+  size_t i = 0;
+  for (i = 0; i < old_selected_indices.size(); i++) {
+    if (old_selected_indices[i] != TabStripSelectionModel::kUnselectedIndex)
+      indices_affected.insert(old_selected_indices[i]);
+  }
+  for (i = 0; i < selection_model().selected_indices().size(); i++)
+    indices_affected.insert(selection_model().selected_indices()[i]);
+  FOR_EACH_OBSERVER(TabStripModelObserver, observers_,
+                    TabSelectionChanged(indices_affected));
+}
+
 void TabStripModel::SelectRelativeTab(bool next) {
   // This may happen during automated testing or if a user somehow buffers
   // many key accelerators.