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// Copyright (c) 2010 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.
#import <Carbon/Carbon.h>
#include "chrome/browser/tab_contents/popup_menu_helper_mac.h"
#include "base/message_loop.h"
#include "base/scoped_nsobject.h"
#include "chrome/browser/renderer_host/render_view_host.h"
#include "chrome/browser/renderer_host/render_widget_host_view_mac.h"
#import "chrome/browser/ui/cocoa/base_view.h"
#import "chrome/common/chrome_application_mac.h"
#include "chrome/common/notification_source.h"
#include "webkit/glue/webmenurunner_mac.h"
PopupMenuHelper::PopupMenuHelper(RenderViewHost* render_view_host)
: render_view_host_(render_view_host) {
notification_registrar_.Add(
this, NotificationType::RENDER_WIDGET_HOST_DESTROYED,
Source<RenderWidgetHost>(render_view_host));
}
void PopupMenuHelper::ShowPopupMenu(
const gfx::Rect& bounds,
int item_height,
double item_font_size,
int selected_item,
const std::vector<WebMenuItem>& items,
bool right_aligned) {
// Retain the Cocoa view for the duration of the pop-up so that it can't be
// dealloced if my Destroy() method is called while the pop-up's up (which
// would in turn delete me, causing a crash once the -runMenuInView
// call returns. That's what was happening in <http://crbug.com/33250>).
RenderWidgetHostViewMac* rwhvm =
static_cast<RenderWidgetHostViewMac*>(render_view_host_->view());
scoped_nsobject<RenderWidgetHostViewCocoa> cocoa_view
([rwhvm->native_view() retain]);
// Display the menu.
scoped_nsobject<WebMenuRunner> menu_runner;
menu_runner.reset([[WebMenuRunner alloc] initWithItems:items
fontSize:item_font_size
rightAligned:right_aligned]);
{
// Make sure events can be pumped while the menu is up.
MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
// One of the events that could be pumped is |window.close()|.
// User-initiated event-tracking loops protect against this by
// setting flags in -[CrApplication sendEvent:], but since
// web-content menus are initiated by IPC message the setup has to
// be done manually.
chrome_application_mac::ScopedSendingEvent sendingEventScoper;
// Now run a SYNCHRONOUS NESTED EVENT LOOP until the pop-up is finished.
[menu_runner runMenuInView:cocoa_view
withBounds:[cocoa_view flipRectToNSRect:bounds]
initialIndex:selected_item];
}
if (!render_view_host_) {
// Bad news, the RenderViewHost got deleted while we were off running the
// menu. Nothing to do.
return;
}
if ([menu_runner menuItemWasChosen]) {
render_view_host_->DidSelectPopupMenuItem(
[menu_runner indexOfSelectedItem]);
} else {
render_view_host_->DidCancelPopupMenu();
}
}
void PopupMenuHelper::Observe(
NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(type == NotificationType::RENDER_WIDGET_HOST_DESTROYED);
RenderViewHost* rvh = Source<RenderViewHost>(source).ptr();
DCHECK_EQ(render_view_host_, rvh);
render_view_host_ = NULL;
}
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