forked from mirrors/gecko-dev
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsAutoWindowStateHelper.h"
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#include "mozilla/dom/Event.h"
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#include "nsIDocument.h"
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#include "nsIDOMWindow.h"
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#include "nsPIDOMWindow.h"
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#include "nsString.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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/****************************************************************
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****************** nsAutoWindowStateHelper *********************
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****************************************************************/
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nsAutoWindowStateHelper::nsAutoWindowStateHelper(nsPIDOMWindowOuter* aWindow)
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: mWindow(aWindow)
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, mDefaultEnabled(DispatchEventToChrome("DOMWillOpenModalDialog"))
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{
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if (mWindow) {
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mWindow->EnterModalState();
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}
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}
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nsAutoWindowStateHelper::~nsAutoWindowStateHelper()
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{
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if (mWindow) {
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mWindow->LeaveModalState();
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}
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if (mDefaultEnabled) {
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DispatchEventToChrome("DOMModalDialogClosed");
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}
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}
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bool
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nsAutoWindowStateHelper::DispatchEventToChrome(const char* aEventName)
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{
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// XXXbz should we skip dispatching the event if the inner changed?
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// That is, should we store both the inner and the outer?
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if (!mWindow) {
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return true;
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}
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// The functions of nsContentUtils do not provide the required behavior,
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// so the following is inlined.
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nsIDocument* doc = mWindow->GetExtantDoc();
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if (!doc) {
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return true;
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}
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ErrorResult rv;
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RefPtr<Event> event = doc->CreateEvent(NS_LITERAL_STRING("Events"),
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CallerType::System, rv);
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if (rv.Failed()) {
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rv.SuppressException();
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return false;
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}
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event->InitEvent(NS_ConvertASCIItoUTF16(aEventName), true, true);
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event->SetTrusted(true);
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event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
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nsCOMPtr<EventTarget> target = do_QueryInterface(mWindow);
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bool defaultActionEnabled =
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target->DispatchEvent(*event, CallerType::System, IgnoreErrors());
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return defaultActionEnabled;
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}
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