1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
* Copyright (C) 2007 Apple Inc. All rights reserved.
* (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef JSEventTargetBase_h
#define JSEventTargetBase_h
#include "Document.h"
#include "Event.h"
#include "EventNames.h"
#include "JSEvent.h"
#include "kjs_events.h"
namespace KJS {
extern const struct HashTable JSEventTargetPropertiesTable;
extern const struct HashTable JSEventTargetPrototypeTable;
}
namespace WebCore {
using namespace EventNames;
class AtomicString;
class EventTarget;
// Event target properties (shared across all JSEventTarget* classes)
struct JSEventTargetProperties {
enum {
AddEventListener, RemoveEventListener, DispatchEvent,
OnAbort, OnBlur, OnChange, OnClick, OnContextMenu, OnDblClick, OnError,
OnDragEnter, OnDragOver, OnDragLeave, OnDrop, OnDragStart, OnDrag, OnDragEnd,
OnBeforeCut, OnCut, OnBeforeCopy, OnCopy, OnBeforePaste, OnPaste, OnSelectStart,
OnFocus, OnInput, OnKeyDown, OnKeyPress, OnKeyUp, OnLoad, OnMouseDown,
OnMouseMove, OnMouseOut, OnMouseOver, OnMouseUp, OnMouseWheel, OnReset,
OnResize, OnScroll, OnSearch, OnSelect, OnSubmit, OnUnload
};
};
// Helper function for the partial specializated template functions below
bool retrieveEventTargetAndCorrespondingNode(KJS::ExecState*, KJS::JSObject* thisObj, Node*&, EventTarget*&);
// Functions
KJS::JSValue* jsEventTargetAddEventListener(KJS::ExecState*, KJS::JSObject*, const KJS::List&);
KJS::JSValue* jsEventTargetRemoveEventListener(KJS::ExecState*, KJS::JSObject*, const KJS::List&);
KJS::JSValue* jsEventTargetDispatchEvent(KJS::ExecState*, KJS::JSObject*, const KJS::List&);
// Helper function for getValueProperty/putValueProperty
const AtomicString& eventNameForPropertyToken(int token);
template<class JSEventTarget>
class JSEventTargetBase {
public:
JSEventTargetBase() { }
KJS::JSValue* getValueProperty(const JSEventTarget* owner, KJS::ExecState* exec, int token) const
{
const AtomicString& eventName = eventNameForPropertyToken(token);
if (!eventName.isEmpty())
return owner->getListener(eventName);
return KJS::jsUndefined();
}
void putValueProperty(const JSEventTarget* owner, KJS::ExecState* exec, int token, KJS::JSValue* value)
{
const AtomicString& eventName = eventNameForPropertyToken(token);
if (!eventName.isEmpty())
owner->setListener(exec, eventName, value);
}
private:
friend class JSEventTargetNode;
friend class JSEventTargetSVGElementInstance;
template<class JSParent>
bool getOwnPropertySlot(JSEventTarget* owner, KJS::ExecState* exec, const KJS::Identifier& propertyName, KJS::PropertySlot& slot)
{
return KJS::getStaticValueSlot<JSEventTarget, JSParent>(exec, &KJS::JSEventTargetPropertiesTable, owner, propertyName, slot);
}
template<class JSParent>
void put(JSEventTarget* owner, KJS::ExecState* exec, const KJS::Identifier& propertyName, KJS::JSValue* value)
{
KJS::lookupPut<JSEventTarget, JSParent>(exec, propertyName, value, &KJS::JSEventTargetPropertiesTable, owner);
}
};
// This class is a modified version of the code the KJS_DEFINE_PROTOTYPE_WITH_PROTOTYPE
// and KJS_IMPLEMENT_PROTOTYPE macros produce - the idea is that classes like JSEventTargetNode
// and JSEventTargetSVGElementInstance can share a single prototype just differing in the
// naming "EventTargetNodePrototype" vs "EventTargetSVGElementInstancePrototype". Above mentioned
// macros force the existance of several prototype tables for each of the classes - avoid that.
template<class JSEventTargetPrototypeParent, class JSEventTargetPrototypeInformation>
class JSEventTargetPrototype : public KJS::JSObject {
public:
JSEventTargetPrototype(KJS::ExecState* exec)
: KJS::JSObject(JSEventTargetPrototypeParent::self(exec))
{
}
static KJS::JSObject* self(KJS::ExecState* exec)
{
static KJS::Identifier* prototypeName = new KJS::Identifier(JSEventTargetPrototypeInformation::prototypeClassName());
KJS::JSGlobalObject* globalObject = exec->lexicalGlobalObject();
if (KJS::JSValue* objectValue = globalObject->getDirect(*prototypeName)) {
ASSERT(objectValue->isObject());
return static_cast<KJS::JSObject*>(objectValue);
}
KJS::JSObject* newObject = new JSEventTargetPrototype<JSEventTargetPrototypeParent, JSEventTargetPrototypeInformation>(exec);
globalObject->putDirect(*prototypeName, newObject, KJS::DontEnum);
return newObject;
}
bool getOwnPropertySlot(KJS::ExecState* exec, const KJS::Identifier& propertyName, KJS::PropertySlot& slot)
{
return KJS::getStaticFunctionSlot<KJS::JSObject>(exec, &KJS::JSEventTargetPrototypeTable, this, propertyName, slot);
}
virtual const KJS::ClassInfo* classInfo() const
{
static const KJS::ClassInfo s_classInfo = { JSEventTargetPrototypeInformation::prototypeClassName(), 0, &KJS::JSEventTargetPrototypeTable, 0 };
return &s_classInfo;
}
};
KJS::JSValue* toJS(KJS::ExecState*, EventTarget*);
} // namespace WebCore
#endif // JSEventTargetBase_h
|
