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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/views/extensions/extension_dialog.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/extensions/extension_view_host.h"
#include "chrome/browser/extensions/extension_view_host_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/views/constrained_window_views.h"
#include "chrome/browser/ui/views/extensions/extension_dialog_observer.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/web_contents.h"
#include "ui/base/base_window.h"
#include "ui/gfx/screen.h"
#include "ui/views/background.h"
#include "ui/views/widget/widget.h"
#include "url/gurl.h"
using content::BrowserContext;
using content::WebContents;
ExtensionDialog::ExtensionDialog(extensions::ExtensionViewHost* host,
ExtensionDialogObserver* observer)
: host_(host),
observer_(observer) {
AddRef(); // Balanced in DeleteDelegate();
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
content::Source<BrowserContext>(host->browser_context()));
// Listen for the containing view calling window.close();
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
content::Source<BrowserContext>(host->browser_context()));
// Listen for a crash or other termination of the extension process.
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
content::Source<BrowserContext>(host->browser_context()));
}
ExtensionDialog::~ExtensionDialog() {
}
// static
ExtensionDialog* ExtensionDialog::Show(
const GURL& url,
aura::Window* parent_window,
Profile* profile,
WebContents* web_contents,
int width,
int height,
int min_width,
int min_height,
const base::string16& title,
ExtensionDialogObserver* observer) {
extensions::ExtensionViewHost* host =
extensions::ExtensionViewHostFactory::CreateDialogHost(url, profile);
if (!host)
return NULL;
// Preferred size must be set before views::Widget::CreateWindowWithParent
// is called because CreateWindowWithParent refers the result of CanResize().
host->view()->SetPreferredSize(gfx::Size(width, height));
host->view()->set_minimum_size(gfx::Size(min_width, min_height));
host->SetAssociatedWebContents(web_contents);
DCHECK(parent_window);
ExtensionDialog* dialog = new ExtensionDialog(host, observer);
dialog->set_title(title);
dialog->InitWindow(parent_window, width, height);
// Show a white background while the extension loads. This is prettier than
// flashing a black unfilled window frame.
host->view()->set_background(
views::Background::CreateSolidBackground(0xFF, 0xFF, 0xFF));
host->view()->SetVisible(true);
// Ensure the DOM JavaScript can respond immediately to keyboard shortcuts.
host->host_contents()->Focus();
return dialog;
}
void ExtensionDialog::InitWindow(aura::Window* parent,
int width,
int height) {
views::Widget* window = CreateBrowserModalDialogViews(this, parent);
// Center the window over the browser.
gfx::Point center = parent->GetBoundsInScreen().CenterPoint();
int x = center.x() - width / 2;
int y = center.y() - height / 2;
// Ensure the top left and top right of the window are on screen, with
// priority given to the top left.
gfx::Rect screen_rect = gfx::Screen::GetScreenFor(parent)->
GetDisplayNearestPoint(center).bounds();
gfx::Rect bounds_rect = gfx::Rect(x, y, width, height);
bounds_rect.AdjustToFit(screen_rect);
window->SetBounds(bounds_rect);
window->Show();
// TODO(jamescook): Remove redundant call to Activate()?
window->Activate();
}
void ExtensionDialog::ObserverDestroyed() {
observer_ = NULL;
}
void ExtensionDialog::MaybeFocusRenderView() {
views::FocusManager* focus_manager = GetWidget()->GetFocusManager();
DCHECK(focus_manager != NULL);
// Already there's a focused view, so no need to switch the focus.
if (focus_manager->GetFocusedView())
return;
content::RenderWidgetHostView* view = host()->render_view_host()->GetView();
if (!view)
return;
view->Focus();
}
/////////////////////////////////////////////////////////////////////////////
// views::DialogDelegate overrides.
int ExtensionDialog::GetDialogButtons() const {
// The only user, SelectFileDialogExtension, provides its own buttons.
return ui::DIALOG_BUTTON_NONE;
}
bool ExtensionDialog::CanResize() const {
// Can resize only if minimum contents size set.
return host_->view()->GetPreferredSize() != gfx::Size();
}
void ExtensionDialog::SetMinimumContentsSize(int width, int height) {
host_->view()->SetPreferredSize(gfx::Size(width, height));
}
ui::ModalType ExtensionDialog::GetModalType() const {
return ui::MODAL_TYPE_WINDOW;
}
bool ExtensionDialog::ShouldShowWindowTitle() const {
return !window_title_.empty();
}
base::string16 ExtensionDialog::GetWindowTitle() const {
return window_title_;
}
void ExtensionDialog::WindowClosing() {
if (observer_)
observer_->ExtensionDialogClosing(this);
}
void ExtensionDialog::DeleteDelegate() {
// The window has finished closing. Allow ourself to be deleted.
Release();
}
views::Widget* ExtensionDialog::GetWidget() {
return host_->view()->GetWidget();
}
const views::Widget* ExtensionDialog::GetWidget() const {
return host_->view()->GetWidget();
}
views::View* ExtensionDialog::GetContentsView() {
return host_->view();
}
bool ExtensionDialog::UseNewStyleForThisDialog() const {
return false;
}
/////////////////////////////////////////////////////////////////////////////
// content::NotificationObserver overrides.
void ExtensionDialog::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING:
// Avoid potential overdraw by removing the temporary background after
// the extension finishes loading.
host_->view()->set_background(NULL);
// The render view is created during the LoadURL(), so we should
// set the focus to the view if nobody else takes the focus.
if (content::Details<extensions::ExtensionHost>(host()) == details)
MaybeFocusRenderView();
break;
case chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE:
// If we aren't the host of the popup, then disregard the notification.
if (content::Details<extensions::ExtensionHost>(host()) != details)
return;
GetWidget()->Close();
break;
case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED:
if (content::Details<extensions::ExtensionHost>(host()) != details)
return;
if (observer_)
observer_->ExtensionTerminated(this);
break;
default:
NOTREACHED() << L"Received unexpected notification";
break;
}
}
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