michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsAutoWindowStateHelper.h"
michael@0: 
michael@0: #include "mozilla/dom/Event.h"
michael@0: #include "nsIDocument.h"
michael@0: #include "nsIDOMEvent.h"
michael@0: #include "nsIDOMWindow.h"
michael@0: #include "nsPIDOMWindow.h"
michael@0: #include "nsString.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: /****************************************************************
michael@0:  ****************** nsAutoWindowStateHelper *********************
michael@0:  ****************************************************************/
michael@0: 
michael@0: nsAutoWindowStateHelper::nsAutoWindowStateHelper(nsPIDOMWindow *aWindow)
michael@0:   : mWindow(aWindow),
michael@0:     mDefaultEnabled(DispatchEventToChrome("DOMWillOpenModalDialog"))
michael@0: {
michael@0:   if (mWindow) {
michael@0:     mWindow->EnterModalState();
michael@0:   }
michael@0: }
michael@0: 
michael@0: nsAutoWindowStateHelper::~nsAutoWindowStateHelper()
michael@0: {
michael@0:   if (mWindow) {
michael@0:     mWindow->LeaveModalState();
michael@0:   }
michael@0: 
michael@0:   if (mDefaultEnabled) {
michael@0:     DispatchEventToChrome("DOMModalDialogClosed");
michael@0:   }
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsAutoWindowStateHelper::DispatchEventToChrome(const char *aEventName)
michael@0: {
michael@0:   // XXXbz should we skip dispatching the event if the inner changed?
michael@0:   // That is, should we store both the inner and the outer?
michael@0:   if (!mWindow) {
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   // The functions of nsContentUtils do not provide the required behavior,
michael@0:   // so the following is inlined.
michael@0:   nsIDocument* doc = mWindow->GetExtantDoc();
michael@0:   if (!doc) {
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   ErrorResult rv;
michael@0:   nsRefPtr<Event> event = doc->CreateEvent(NS_LITERAL_STRING("Events"), rv);
michael@0:   if (rv.Failed()) {
michael@0:     return false;
michael@0:   }
michael@0:   NS_ENSURE_TRUE(NS_SUCCEEDED(event->InitEvent(NS_ConvertASCIItoUTF16(aEventName), true, true)), false);
michael@0:   event->SetTrusted(true);
michael@0:   event->GetInternalNSEvent()->mFlags.mOnlyChromeDispatch = true;
michael@0: 
michael@0:   nsCOMPtr<EventTarget> target = do_QueryInterface(mWindow);
michael@0:   bool defaultActionEnabled;
michael@0:   target->DispatchEvent(event, &defaultActionEnabled);
michael@0:   return defaultActionEnabled;
michael@0: }