Allow focus to be sent between browser window and launcher/status window

ash/focus_cycler.cc

+// Copyright (c) 2012 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 "ash/focus_cycler.h"
+
+#include "ash/accelerators/accelerator_controller.h"
+#include "ash/shell.h"
+#include "ash/shell_delegate.h"
+#include "ui/views/widget/widget.h"
+#include "ui/views/focus/focus_search.h"
+#include "ui/aura/window.h"
+#include "ui/aura/client/activation_client.h"
+
+#include "ui/views/accessible_pane_view.h"
+
+namespace ash {
+
+FocusCycler::FocusCycler()
+    : ctrl_forward_key_(ui::VKEY_F2, false, true, false),
+      ctrl_back_key_(ui::VKEY_F1, false, true, false) {
+}
+
+FocusCycler::~FocusCycler() {
+}
+
+void FocusCycler::AddWidget(views::Widget* widget) {
+  widgets_.push_back(widget);
+
+  widget->GetFocusManager()->RegisterAccelerator(ctrl_forward_key_, this);
+  widget->GetFocusManager()->RegisterAccelerator(ctrl_back_key_, this);
+}
+
+bool FocusCycler::AcceleratorPressed(const ui::Accelerator& accelerator) {
+  switch (accelerator.key_code()) {
+    case ui::VKEY_F1:
+      RotateFocus(false);
+      return true;
+    case ui::VKEY_F2:
+      RotateFocus(true);
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool FocusCycler::CanHandleAccelerators() const {

[sky, 2012/01/31 16:38:15]

Make order match that of header.

[Zachary Kuznia, 2012/01/31 17:57:42]

Done.

+  return true;
+}
+
+void FocusCycler::RotateFocus(bool forwards) {
+  int index = 0;
+  int count = static_cast<int>(widgets_.size());
+  int browser_index = count;
+
+  for (; index < count; ++index) {
+    if (widgets_[index]->IsActive())
+      break;
+  }
+
+  count = count + 1;
+
+  if (forwards)
+    index = (index + 1) % count;
+  else
+    index = ((index - 1) + count) % count;
+
+  if (index == browser_index) {
+    // Activate the browser window.
+    const std::vector<aura::Window*>& windows =
+        Shell::GetInstance()->delegate()->GetCycleWindowList(
+            ShellDelegate::SOURCE_LAUNCHER, ShellDelegate::ORDER_MRU);
+    if (!windows.empty()) {
+      aura::client::GetActivationClient()->ActivateWindow(windows[0]);
+      return;

[sky, 2012/01/31 16:38:15]

remove the early return here and 85.

[Zachary Kuznia, 2012/01/31 17:57:42]

Changed to break to exit the loop.  The loop is added to skip over invisible
elements.

+    }
+
+  } else {
+    views::Widget* widget = widgets_[index];
+
+    views::AccessiblePaneView* view =
+        static_cast<views::AccessiblePaneView*>(widget->GetContentsView());
+    if (view->SetPaneFocusAndFocusDefault()) {
+      widget->Activate();
+      return;
+    }
+  }
+}
+
+}  // namespace ash