OLD | NEW |
| (Empty) |
1 /* | |
2 * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #ifndef V8AbstractEventListener_h | |
32 #define V8AbstractEventListener_h | |
33 | |
34 #include "EventListener.h" | |
35 #include <v8.h> | |
36 | |
37 namespace WebCore { | |
38 | |
39 class Event; | |
40 class Frame; | |
41 | |
42 // There are two kinds of event listeners: HTML or non-HMTL. onload, onfocus
, etc (attributes) are always HTML event handler type; | |
43 // Event listeners added by Window.addEventListener or EventTargetNode::addE
ventListener are non-HTML type. | |
44 // | |
45 // Why does this matter? | |
46 // WebKit does not allow duplicated HTML event handlers of the same type, bu
t ALLOWs duplicated non-HTML event handlers. | |
47 class V8AbstractEventListener : public EventListener { | |
48 public: | |
49 virtual ~V8AbstractEventListener() { } | |
50 | |
51 // Returns the owner frame of the listener. | |
52 Frame* frame() { return m_frame; } | |
53 | |
54 virtual void handleEvent(Event*, bool isWindowEvent); | |
55 void invokeEventHandler(v8::Handle<v8::Context>, Event*, bool isWindowEv
ent); | |
56 | |
57 // Returns the listener object, either a function or an object. | |
58 virtual v8::Local<v8::Object> getListenerObject() | |
59 { | |
60 return v8::Local<v8::Object>::New(m_listener); | |
61 } | |
62 | |
63 // Dispose listener object and clear the handle. | |
64 void disposeListenerObject(); | |
65 | |
66 virtual bool disconnected() const { return !m_frame; } | |
67 | |
68 protected: | |
69 v8::Persistent<v8::Object> m_listener; | |
70 | |
71 // Indicates if this is an HTML type listener. | |
72 bool m_isInline; | |
73 | |
74 private: | |
75 V8AbstractEventListener(Frame*, bool isInline); | |
76 | |
77 virtual v8::Local<v8::Value> callListenerFunction(v8::Handle<v8::Value>
jsevent, Event*, bool isWindowEvent) = 0; | |
78 | |
79 // Get the receiver object to use for event listener call. | |
80 v8::Local<v8::Object> getReceiverObject(Event*, bool isWindowEvent); | |
81 | |
82 // Frame to which the event listener is attached to. An event listener m
ust be destroyed before its owner frame is | |
83 // deleted. See fast/dom/replaceChild.html | |
84 // FIXME: this could hold m_frame live until the event listener is delet
ed. | |
85 Frame* m_frame; | |
86 | |
87 // Position in the HTML source for HTML event listeners. | |
88 int m_lineNumber; | |
89 int m_columnNumber; | |
90 | |
91 friend class V8EventListener; | |
92 friend class V8ObjectEventListener; | |
93 friend class V8LazyEventListener; | |
94 }; | |
95 | |
96 } // namespace WebCore | |
97 | |
98 #endif // V8AbstractEventListener_h | |
OLD | NEW |