1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Aaron Leventhal (aaronleventhal@moonset.net)
19 : * Portions created by the Initial Developer are Copyright (C) 2005
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
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33 : * the provisions above, a recipient may use your version of this file under
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35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #ifndef nsAsyncDOMEvent_h___
39 : #define nsAsyncDOMEvent_h___
40 :
41 : #include "nsCOMPtr.h"
42 : #include "nsThreadUtils.h"
43 : #include "nsINode.h"
44 : #include "nsIDOMEvent.h"
45 : #include "nsString.h"
46 : #include "nsIDocument.h"
47 :
48 : /**
49 : * Use nsAsyncDOMEvent to fire a DOM event that requires safe a stable DOM.
50 : * For example, you may need to fire an event from within layout, but
51 : * want to ensure that the event handler doesn't mutate the DOM at
52 : * the wrong time, in order to avoid resulting instability.
53 : */
54 :
55 17476 : class nsAsyncDOMEvent : public nsRunnable {
56 : public:
57 4325 : nsAsyncDOMEvent(nsINode *aEventNode, const nsAString& aEventType,
58 : bool aBubbles, bool aDispatchChromeOnly)
59 : : mEventNode(aEventNode), mEventType(aEventType),
60 : mBubbles(aBubbles),
61 4325 : mDispatchChromeOnly(aDispatchChromeOnly)
62 4325 : { }
63 :
64 0 : nsAsyncDOMEvent(nsINode *aEventNode, nsIDOMEvent *aEvent)
65 0 : : mEventNode(aEventNode), mEvent(aEvent), mDispatchChromeOnly(false)
66 0 : { }
67 :
68 : nsAsyncDOMEvent(nsINode *aEventNode, nsEvent &aEvent);
69 :
70 : NS_IMETHOD Run();
71 : nsresult PostDOMEvent();
72 : void RunDOMEventWhenSafe();
73 :
74 : nsCOMPtr<nsINode> mEventNode;
75 : nsCOMPtr<nsIDOMEvent> mEvent;
76 : nsString mEventType;
77 : bool mBubbles;
78 : bool mDispatchChromeOnly;
79 : };
80 :
81 : class nsLoadBlockingAsyncDOMEvent : public nsAsyncDOMEvent {
82 : public:
83 0 : nsLoadBlockingAsyncDOMEvent(nsINode *aEventNode, const nsAString& aEventType,
84 : bool aBubbles, bool aDispatchChromeOnly)
85 : : nsAsyncDOMEvent(aEventNode, aEventType, aBubbles, aDispatchChromeOnly),
86 0 : mBlockedDoc(aEventNode->OwnerDoc())
87 : {
88 0 : if (mBlockedDoc) {
89 0 : mBlockedDoc->BlockOnload();
90 : }
91 0 : }
92 :
93 : nsLoadBlockingAsyncDOMEvent(nsINode *aEventNode, nsIDOMEvent *aEvent)
94 : : nsAsyncDOMEvent(aEventNode, aEvent),
95 : mBlockedDoc(aEventNode->OwnerDoc())
96 : {
97 : if (mBlockedDoc) {
98 : mBlockedDoc->BlockOnload();
99 : }
100 : }
101 :
102 : ~nsLoadBlockingAsyncDOMEvent();
103 :
104 : nsCOMPtr<nsIDocument> mBlockedDoc;
105 : };
106 :
107 : #endif
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