1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "chrome/browser/chromeos/status/window_switcher_button.h" 6 7 #include "chrome/browser/chromeos/status/status_area_host.h" 8 #include "chrome/browser/chromeos/wm_ipc.h" 9 #include "chrome/browser/ui/browser_window.h" 10 #include "grit/generated_resources.h" 11 #include "grit/theme_resources.h" 12 #include "ui/base/l10n/l10n_util.h" 13 #include "ui/base/resource/resource_bundle.h" 14 #include "ui/gfx/canvas.h" 15 16 namespace chromeos { 17 18 namespace { GetNormalBrowserCount()19int GetNormalBrowserCount() { 20 int count = 0; 21 BrowserList::const_iterator iter; 22 for (iter = BrowserList::begin(); iter != BrowserList::end(); ++iter) { 23 if ((*iter)->type() == Browser::TYPE_NORMAL) 24 count++; 25 } 26 return count; 27 } 28 } 29 WindowSwitcherButton(StatusAreaHost * host)30WindowSwitcherButton::WindowSwitcherButton(StatusAreaHost* host) 31 : StatusAreaButton(host, this) { 32 ResourceBundle& rb = ResourceBundle::GetSharedInstance(); 33 SetIcon(*rb.GetBitmapNamed(IDR_STATUSBAR_WINDOW_SWITCHER)); 34 SetEnabled(true); 35 36 UpdateStatus(); 37 BrowserList::AddObserver(this); 38 } 39 ~WindowSwitcherButton()40WindowSwitcherButton::~WindowSwitcherButton() { 41 BrowserList::RemoveObserver(this); 42 } 43 UpdateStatus()44void WindowSwitcherButton::UpdateStatus() { 45 if (GetNormalBrowserCount() < 2) { 46 // There are less than two browsers. This means we can't switch 47 // anywhere, so we disappear. 48 SetTooltipText(L""); 49 SetVisible(false); 50 PreferredSizeChanged(); 51 return; 52 } 53 54 SetTooltipText(UTF16ToWide(l10n_util::GetStringUTF16( 55 IDS_STATUSBAR_WINDOW_SWITCHER_TOOLTIP))); 56 57 // There are at least two browsers, so we show ourselves. 58 SetVisible(true); 59 PreferredSizeChanged(); 60 } 61 62 //////////////////////////////////////////////////////////////////////////////// 63 // WindowSwitcherButton, views::ViewMenuDelegate implementation: 64 RunMenu(views::View * source,const gfx::Point & pt)65void WindowSwitcherButton::RunMenu(views::View* source, const gfx::Point& pt) { 66 // Don't do anything if there aren't at least two normal browsers to 67 // switch between. 68 if (GetNormalBrowserCount() < 2) 69 return; 70 71 // Send a message to the ChromeOS window manager to switch to the 72 // next top level browser window. Only the window manager knows 73 // what order they are in, so we can't use Chrome's browser list 74 // to decide. 75 WmIpc::Message message(chromeos::WM_IPC_MESSAGE_WM_CYCLE_WINDOWS); 76 message.set_param(0, true); 77 WmIpc::instance()->SendMessage(message); 78 } 79 80 //////////////////////////////////////////////////////////////////////////////// 81 // BrowserList::Observer implementation: 82 83 // Called immediately after a browser is added to the list OnBrowserAdded(const Browser * browser)84void WindowSwitcherButton::OnBrowserAdded(const Browser* browser) { 85 UpdateStatus(); 86 } 87 88 // Called immediately after a browser is removed from the list OnBrowserRemoved(const Browser * browser)89void WindowSwitcherButton::OnBrowserRemoved(const Browser* browser) { 90 UpdateStatus(); 91 } 92 93 } // namespace chromeos 94