cef/libcef/browser/native/menu_runner_mac.mm

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// Copyright (c) 2012 The Chromium Embedded Framework 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 "libcef/browser/native/menu_runner_mac.h"
#include "libcef/browser/browser_host_impl.h"
#include "base/compiler_specific.h"
#import "base/mac/scoped_sending_event.h"
#include "base/message_loop/message_loop.h"
#include "base/message_loop/message_loop_current.h"
#import "ui/base/cocoa/menu_controller.h"
#include "ui/gfx/geometry/point.h"
CefMenuRunnerMac::CefMenuRunnerMac() {}
CefMenuRunnerMac::~CefMenuRunnerMac() {}
bool CefMenuRunnerMac::RunContextMenu(
CefBrowserHostImpl* browser,
CefMenuModelImpl* model,
const content::ContextMenuParams& params) {
// Create a menu controller based on the model.
menu_controller_.reset([[MenuControllerCocoa alloc]
initWithModel:model->model()
useWithPopUpButtonCell:NO]);
// Keep the menu controller alive (by adding an additional retain) until after
// the menu has been dismissed. Otherwise it will crash if the browser is
// destroyed (and consequently the menu controller is destroyed) while the
// menu is still pending.
base::scoped_nsobject<MenuControllerCocoa> menu_controller_ref(
menu_controller_);
// Make sure events can be pumped while the menu is up.
base::MessageLoopCurrent::ScopedNestableTaskAllower allow;
// 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.
base::mac::ScopedSendingEvent sendingEventScoper;
// Show the menu. Blocks until the menu is dismissed.
if (browser->IsWindowless()) {
// Don't show the menu unless a native window handle exists.
if (!browser->GetWindowHandle())
return false;
const gfx::Point& screen_point =
browser->GetScreenPoint(gfx::Point(params.x, params.y));
NSPoint screen_position = NSPointFromCGPoint(screen_point.ToCGPoint());
[[menu_controller_ menu] popUpMenuPositioningItem:nil
atLocation:screen_position
inView:nil];
} else {
NSView* parent_view =
browser->web_contents()->GetContentNativeView().GetNativeNSView();
// Synthesize an event for the click, as there is no certainty that
// [NSApp currentEvent] will return a valid event.
NSEvent* currentEvent = [NSApp currentEvent];
NSWindow* window = [parent_view window];
NSPoint position = [window mouseLocationOutsideOfEventStream];
NSTimeInterval eventTime = [currentEvent timestamp];
NSEvent* clickEvent = [NSEvent mouseEventWithType:NSRightMouseDown
location:position
modifierFlags:NSRightMouseDownMask
timestamp:eventTime
windowNumber:[window windowNumber]
context:nil
eventNumber:0
clickCount:1
pressure:1.0];
[NSMenu popUpContextMenu:[menu_controller_ menu]
withEvent:clickEvent
forView:parent_view];
}
return true;
}
void CefMenuRunnerMac::CancelContextMenu() {
if (menu_controller_.get())
[menu_controller_ cancel];
}