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// 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 "chrome/browser/ui/webui/task_manager_dialog.h"
#include "base/bind.h"
#include "base/memory/singleton.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/platform_util.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/prefs/scoped_user_pref_update.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_dialogs.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/dialog_style.h"
#include "chrome/browser/ui/webui/html_dialog_ui.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "grit/google_chrome_strings.h"
#include "ui/base/l10n/l10n_util.h"
#if defined(OS_CHROMEOS)
#include "ui/views/widget/widget.h"
#endif
using content::BrowserThread;
using content::WebContents;
using content::WebUIMessageHandler;
class TaskManagerDialogImpl : public HtmlDialogUIDelegate {
public:
TaskManagerDialogImpl();
static void Show(bool is_background_page_mode);
static TaskManagerDialogImpl* GetInstance();
protected:
friend struct DefaultSingletonTraits<TaskManagerDialogImpl>;
virtual ~TaskManagerDialogImpl();
void OnCloseDialog();
// Overridden from HtmlDialogUIDelegate:
virtual ui::ModalType GetDialogModalType() const OVERRIDE {
return ui::MODAL_TYPE_NONE;
}
virtual string16 GetDialogTitle() const OVERRIDE {
return l10n_util::GetStringUTF16(IDS_TASK_MANAGER_TITLE);
}
virtual GURL GetDialogContentURL() const OVERRIDE {
std::string url_string(chrome::kChromeUITaskManagerURL);
url_string += "?";
#if defined(OS_CHROMEOS)
url_string += "showclose=1&showtitle=1&";
#endif // defined(OS_CHROMEOS)
if (is_background_page_mode_)
url_string += "background=1";
return GURL(url_string);
}
virtual void GetWebUIMessageHandlers(
std::vector<WebUIMessageHandler*>* handlers) const OVERRIDE {
}
virtual void GetDialogSize(gfx::Size* size) const OVERRIDE {
// If dialog's bounds are previously saved, use them.
if (g_browser_process->local_state()) {
const DictionaryValue* placement_pref =
g_browser_process->local_state()->GetDictionary(
prefs::kTaskManagerWindowPlacement);
int width, height;
if (placement_pref &&
placement_pref->GetInteger("width", &width) &&
placement_pref->GetInteger("height", &height)) {
size->SetSize(std::max(1, width), std::max(1, height));
return;
}
}
// Otherwise set default size.
size->SetSize(640, 480);
}
virtual std::string GetDialogArgs() const OVERRIDE {
return std::string();
}
virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE {
OnCloseDialog();
}
virtual void OnCloseContents(WebContents* source, bool* out_close_dialog)
OVERRIDE {
*out_close_dialog = true;
}
virtual bool ShouldShowDialogTitle() const OVERRIDE {
return false;
}
virtual bool HandleContextMenu(const ContextMenuParams& params) OVERRIDE {
return true;
}
virtual void StoreDialogSize(const gfx::Rect dialog_bounds) OVERRIDE {
// Store the dialog's bounds so that it can be restored with the same bounds
// the next time it's opened.
if (g_browser_process->local_state()) {
DictionaryPrefUpdate update(g_browser_process->local_state(),
prefs::kTaskManagerWindowPlacement);
DictionaryValue* placement_pref = update.Get();
placement_pref->SetInteger("width", dialog_bounds.width());
placement_pref->SetInteger("height", dialog_bounds.height());
}
}
private:
void ShowDialog(bool is_background_page_mode);
void OpenHtmlDialog();
int show_count_;
gfx::NativeWindow window_;
bool is_background_page_mode_;
DISALLOW_COPY_AND_ASSIGN(TaskManagerDialogImpl);
};
// ****************************************************
// static
TaskManagerDialogImpl* TaskManagerDialogImpl::GetInstance() {
DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::IO));
DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::FILE));
return Singleton<TaskManagerDialogImpl>::get();
}
TaskManagerDialogImpl::TaskManagerDialogImpl()
: show_count_(0),
window_(NULL),
is_background_page_mode_(false) {
}
TaskManagerDialogImpl::~TaskManagerDialogImpl() {
}
// static
void TaskManagerDialogImpl::Show(bool is_background_page_mode) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
TaskManagerDialogImpl* dialog = TaskManagerDialogImpl::GetInstance();
dialog->ShowDialog(is_background_page_mode);
}
void TaskManagerDialogImpl::ShowDialog(bool is_background_page_mode) {
if (show_count_ > 0) {
#if defined(OS_CHROMEOS)
// Closes current TaskManager and Opens new one.
views::Widget::GetWidgetForNativeWindow(window_)->Close();
#else
// TODO(yoshiki): Supports the other platforms.
platform_util::ActivateWindow(window_);
return;
#endif
}
is_background_page_mode_ = is_background_page_mode;
OpenHtmlDialog();
++show_count_;
}
void TaskManagerDialogImpl::OnCloseDialog() {
if (show_count_ > 0)
--show_count_;
}
void TaskManagerDialogImpl::OpenHtmlDialog() {
Browser* browser = BrowserList::GetLastActive();
DCHECK(browser);
window_ = browser::ShowHtmlDialog(NULL,
browser->profile()->GetOriginalProfile(),
NULL,
this,
STYLE_GENERIC);
}
// ****************************************************
//
// static
void TaskManagerDialog::Show() {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&TaskManagerDialogImpl::Show, false));
}
// static
void TaskManagerDialog::ShowBackgroundPages() {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&TaskManagerDialogImpl::Show, true));
}
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