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// Copyright (c) 2011 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/chromeos/status/window_switcher_button.h"
#include "chrome/browser/chromeos/status/status_area_host.h"
#include "chrome/browser/chromeos/wm_ipc.h"
#include "chrome/browser/ui/browser_window.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
namespace chromeos {
namespace {
int GetNormalBrowserCount() {
int count = 0;
BrowserList::const_iterator iter;
for (iter = BrowserList::begin(); iter != BrowserList::end(); ++iter) {
if ((*iter)->is_type_tabbed())
count++;
}
return count;
}
}
WindowSwitcherButton::WindowSwitcherButton(StatusAreaHost* host)
: StatusAreaButton(host, this) {
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
SetIcon(*rb.GetBitmapNamed(IDR_STATUSBAR_WINDOW_SWITCHER));
SetEnabled(true);
UpdateStatus();
BrowserList::AddObserver(this);
}
WindowSwitcherButton::~WindowSwitcherButton() {
BrowserList::RemoveObserver(this);
}
void WindowSwitcherButton::UpdateStatus() {
if (GetNormalBrowserCount() < 2) {
// There are less than two browsers. This means we can't switch
// anywhere, so we disappear.
SetTooltipText(L"");
SetVisible(false);
PreferredSizeChanged();
return;
}
SetTooltipText(UTF16ToWide(l10n_util::GetStringUTF16(
IDS_STATUSBAR_WINDOW_SWITCHER_TOOLTIP)));
// There are at least two browsers, so we show ourselves.
SetVisible(true);
PreferredSizeChanged();
}
////////////////////////////////////////////////////////////////////////////////
// WindowSwitcherButton, views::ViewMenuDelegate implementation:
void WindowSwitcherButton::RunMenu(views::View* source, const gfx::Point& pt) {
// Don't do anything if there aren't at least two normal browsers to
// switch between.
if (GetNormalBrowserCount() < 2)
return;
// Send a message to the ChromeOS window manager to switch to the
// next top level browser window. Only the window manager knows
// what order they are in, so we can't use Chrome's browser list
// to decide.
WmIpc::Message message(chromeos::WM_IPC_MESSAGE_WM_CYCLE_WINDOWS);
message.set_param(0, true);
WmIpc::instance()->SendMessage(message);
}
////////////////////////////////////////////////////////////////////////////////
// BrowserList::Observer implementation:
// Called immediately after a browser is added to the list
void WindowSwitcherButton::OnBrowserAdded(const Browser* browser) {
UpdateStatus();
}
// Called immediately after a browser is removed from the list
void WindowSwitcherButton::OnBrowserRemoved(const Browser* browser) {
UpdateStatus();
}
} // namespace chromeos
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