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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 "ash/screensaver/screensaver_view.h"
#include "ash/shell.h"
#include "ash/shell_delegate.h"
#include "base/bind.h"
#include "base/logging.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
#include "ui/aura/root_window.h"
#include "ui/gfx/screen.h"
#include "ui/views/controls/webview/webview.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"
using content::BrowserThread;
namespace {
ash::internal::ScreensaverView* g_instance = NULL;
// Do not restart the screensaver again if it has
// terminated kMaxTerminations times already.
const int kMaxTerminations = 3;
} // namespace
namespace ash {
void ShowScreensaver(const GURL& url) {
internal::ScreensaverView::ShowScreensaver(url);
}
void CloseScreensaver() {
internal::ScreensaverView::CloseScreensaver();
}
namespace internal {
// static
void ScreensaverView::ShowScreensaver(const GURL& url) {
if (!g_instance) {
g_instance = new ScreensaverView(url);
g_instance->Show();
}
}
// static
void ScreensaverView::CloseScreensaver() {
if (g_instance) {
g_instance->Close();
g_instance = NULL;
}
}
////////////////////////////////////////////////////////////////////////////////
// ScreensaverView, views::WidgetDelegateView implementation.
views::View* ScreensaverView::GetContentsView() {
return this;
}
////////////////////////////////////////////////////////////////////////////////
// ScreensaverView, content::WebContentsObserver implementation.
void ScreensaverView::RenderViewGone(
base::TerminationStatus status) {
LOG(ERROR) << "Screensaver terminated with status " << status;
termination_count_++;
if (termination_count_ < kMaxTerminations) {
LOG(ERROR) << termination_count_
<< " terminations is under the threshold of "
<< kMaxTerminations
<< "; reloading Screensaver.";
LoadScreensaver();
} else {
LOG(ERROR) << "Exceeded termination threshold, closing Screensaver.";
ScreensaverView::CloseScreensaver();
}
}
////////////////////////////////////////////////////////////////////////////////
// ScreensaverView private methods.
ScreensaverView::ScreensaverView(const GURL& url)
: url_(url),
termination_count_(0),
screensaver_webview_(NULL),
container_window_(NULL) {
}
ScreensaverView::~ScreensaverView() {
}
void ScreensaverView::Show() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Add the WebView to our view.
AddChildWebContents();
// Show the window.
ShowWindow();
}
void ScreensaverView::Close() {
DCHECK(GetWidget());
GetWidget()->Close();
}
void ScreensaverView::AddChildWebContents() {
content::BrowserContext* context =
Shell::GetInstance()->delegate()->GetCurrentBrowserContext();
screensaver_webview_ = new views::WebView(context);
SetLayoutManager(new views::FillLayout);
AddChildView(screensaver_webview_);
LoadScreensaver();
content::WebContentsObserver::Observe(
screensaver_webview_->GetWebContents());
}
void ScreensaverView::LoadScreensaver() {
screensaver_webview_->GetWebContents()->GetController().LoadURL(
url_,
content::Referrer(),
content::PAGE_TRANSITION_AUTO_TOPLEVEL,
std::string());
}
void ScreensaverView::ShowWindow() {
aura::RootWindow* root_window = ash::Shell::GetPrimaryRootWindow();
gfx::Rect screen_rect =
Shell::GetScreen()->GetDisplayNearestWindow(root_window).bounds();
// We want to be the fullscreen topmost child of the root window.
// There should be nothing ever really that should show up on top of us.
container_window_ = new views::Widget();
views::Widget::InitParams params(
views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
params.delegate = this;
params.parent = root_window;
container_window_->Init(params);
container_window_->StackAtTop();
container_window_->SetBounds(screen_rect);
container_window_->Show();
}
// static
ScreensaverView* ScreensaverView::GetInstance() {
return g_instance;
}
} // namespace internal
} // namespace ash
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