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// Copyright (c) 2009 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/extensions/extension_popup_host.h"
#include "base/message_loop.h"
#if defined(TOOLKIT_VIEWS)
#include "chrome/browser/extensions/extension_popup_api.h"
#endif
#include "chrome/browser/profile.h"
#include "chrome/browser/browser.h"
#include "chrome/browser/renderer_host/render_view_host.h"
#include "chrome/browser/renderer_host/render_widget_host_view.h"
#if defined(TOOLKIT_VIEWS)
#include "chrome/browser/views/extensions/extension_popup.h"
#endif
#include "chrome/common/notification_details.h"
#include "chrome/common/notification_source.h"
#include "chrome/common/notification_type.h"
#if defined(TOOLKIT_VIEWS)
#include "views/focus/focus_manager.h"
#include "views/widget/root_view.h"
#endif
#if defined(TOOLKIT_VIEWS)
// A helper class that monitors native focus change events. Because the views
// FocusManager does not listen for view-change notification across
// native-windows, we need to use native-listener utilities.
class ExtensionPopupHost::PopupFocusListener
: public views::WidgetFocusChangeListener {
public:
// Constructs and registers a new PopupFocusListener for the given
// |popup_host|.
explicit PopupFocusListener(ExtensionPopupHost* popup_host)
: popup_host_(popup_host) {
views::FocusManager::GetWidgetFocusManager()->AddFocusChangeListener(this);
}
virtual ~PopupFocusListener() {
views::FocusManager::GetWidgetFocusManager()->
RemoveFocusChangeListener(this);
}
virtual void NativeFocusWillChange(gfx::NativeView focused_before,
gfx::NativeView focused_now) {
// If no view is to be focused, then Chrome was deactivated, so hide the
// popup.
if (!focused_now) {
popup_host_->DismissPopupAsync();
return;
}
gfx::NativeView host_view = popup_host_->delegate()->GetNativeViewOfHost();
// If the widget hosting the popup contains the newly focused view, then
// don't dismiss the pop-up.
views::Widget* popup_root_widget =
popup_host_->child_popup()->host()->view()->GetWidget();
if (popup_root_widget &&
popup_root_widget->ContainsNativeView(focused_now)) {
return;
}
// If the widget or RenderWidgetHostView hosting the extension that
// launched the pop-up is receiving focus, then don't dismiss the popup.
views::Widget* host_widget =
views::Widget::GetWidgetFromNativeView(host_view);
if (host_widget && host_widget->ContainsNativeView(focused_now)) {
return;
}
RenderWidgetHostView* render_host_view =
RenderWidgetHostView::GetRenderWidgetHostViewFromNativeView(
host_view);
if (render_host_view &&
render_host_view->ContainsNativeView(focused_now)) {
return;
}
popup_host_->DismissPopupAsync();
}
private:
ExtensionPopupHost* popup_host_;
DISALLOW_COPY_AND_ASSIGN(PopupFocusListener);
};
#endif // if defined(TOOLKIT_VIEWS)
ExtensionPopupHost::PopupDelegate::~PopupDelegate() {
// If the PopupDelegate is being torn down, then make sure to reset the
// cached pointer in the host to prevent access to a stale pointer.
if (popup_host_.get())
popup_host_->RevokeDelegate();
}
ExtensionPopupHost* ExtensionPopupHost::PopupDelegate::popup_host() {
if (!popup_host_.get())
popup_host_.reset(new ExtensionPopupHost(this));
return popup_host_.get();
}
Profile* ExtensionPopupHost::PopupDelegate::GetProfile() {
// If there is a browser present, return the profile associated with it.
// When hosting a view in an ExternalTabContainer, it is possible to have
// no Browser instance.
Browser* browser = GetBrowser();
if (browser) {
return browser->profile();
}
return NULL;
}
ExtensionPopupHost::ExtensionPopupHost(PopupDelegate* delegate)
: // NO LINT
#if defined(TOOLKIT_VIEWS)
listener_(NULL),
child_popup_(NULL),
#endif
delegate_(delegate),
ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)) {
DCHECK(delegate_);
// Listen for view close requests, so that we can dismiss a hosted pop-up
// view, if necessary.
Profile* profile = delegate_->GetProfile();
DCHECK(profile);
registrar_.Add(this, NotificationType::EXTENSION_HOST_VIEW_SHOULD_CLOSE,
Source<Profile>(profile));
}
ExtensionPopupHost::~ExtensionPopupHost() {
DismissPopup();
}
#if defined(TOOLKIT_VIEWS)
void ExtensionPopupHost::set_child_popup(ExtensionPopup* popup) {
// An extension may only have one popup active at a given time.
DismissPopup();
if (popup)
listener_.reset(new PopupFocusListener(this));
child_popup_ = popup;
}
void ExtensionPopupHost::BubbleBrowserWindowMoved(BrowserBubble* bubble) {
DismissPopupAsync();
}
void ExtensionPopupHost::BubbleBrowserWindowClosing(BrowserBubble* bubble) {
DismissPopupAsync();
}
#endif // defined(TOOLKIT_VIEWS)
void ExtensionPopupHost::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (type == NotificationType::EXTENSION_HOST_VIEW_SHOULD_CLOSE) {
#if defined(TOOLKIT_VIEWS)
// If we aren't the host of the popup, then disregard the notification.
if (!child_popup_ ||
Details<ExtensionHost>(child_popup_->host()) != details) {
return;
}
DismissPopup();
#endif
} else {
NOTREACHED();
}
}
void ExtensionPopupHost::DismissPopup() {
#if defined(TOOLKIT_VIEWS)
listener_.reset(NULL);
if (child_popup_) {
child_popup_->Hide();
child_popup_->DetachFromBrowser();
delete child_popup_;
child_popup_ = NULL;
if (delegate_) {
PopupEventRouter::OnPopupClosed(
delegate_->GetProfile(),
delegate_->GetRenderViewHost()->routing_id());
}
}
#endif // defined(TOOLKIT_VIEWS)
}
void ExtensionPopupHost::DismissPopupAsync() {
// Dismiss the popup asynchronously, as we could be deep in a message loop
// processing activations, and the focus manager may get confused if the
// currently focused view is destroyed.
method_factory_.RevokeAll();
MessageLoop::current()->PostNonNestableTask(
FROM_HERE,
method_factory_.NewRunnableMethod(
&ExtensionPopupHost::DismissPopup));
}
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