1 /*
2 * Copyright (C) 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 #include "config.h"
32 #include "ScriptEventListener.h"
33
34 #include "Attribute.h"
35 #include "Document.h"
36 #include "EventListener.h"
37 #include "JSNode.h"
38 #include "Frame.h"
39 #include <runtime/JSLock.h>
40
41 using namespace JSC;
42
43 namespace WebCore {
44
eventParameterName(bool isSVGEvent)45 static const String& eventParameterName(bool isSVGEvent)
46 {
47 DEFINE_STATIC_LOCAL(const String, eventString, ("event"));
48 DEFINE_STATIC_LOCAL(const String, evtString, ("evt"));
49 return isSVGEvent ? evtString : eventString;
50 }
51
createAttributeEventListener(Node * node,Attribute * attr)52 PassRefPtr<JSLazyEventListener> createAttributeEventListener(Node* node, Attribute* attr)
53 {
54 ASSERT(node);
55 ASSERT(attr);
56 if (attr->isNull())
57 return 0;
58
59 int lineNumber = 1;
60 String sourceURL;
61
62 // FIXME: We should be able to provide accurate source information for frameless documents, too (e.g. for importing nodes from XMLHttpRequest.responseXML).
63 if (Frame* frame = node->document()->frame()) {
64 ScriptController* scriptController = frame->script();
65 if (!scriptController->canExecuteScripts(AboutToExecuteScript))
66 return 0;
67
68 lineNumber = scriptController->eventHandlerLineNumber();
69 sourceURL = node->document()->url().string();
70 }
71
72 return JSLazyEventListener::create(attr->localName().string(), eventParameterName(node->isSVGElement()), attr->value(), node, sourceURL, lineNumber, 0, mainThreadNormalWorld());
73 }
74
createAttributeEventListener(Frame * frame,Attribute * attr)75 PassRefPtr<JSLazyEventListener> createAttributeEventListener(Frame* frame, Attribute* attr)
76 {
77 if (!frame)
78 return 0;
79
80 ASSERT(attr);
81 if (attr->isNull())
82 return 0;
83
84 int lineNumber = 1;
85 String sourceURL;
86
87 ScriptController* scriptController = frame->script();
88 if (!scriptController->canExecuteScripts(AboutToExecuteScript))
89 return 0;
90
91 lineNumber = scriptController->eventHandlerLineNumber();
92 sourceURL = frame->document()->url().string();
93 JSObject* wrapper = toJSDOMWindow(frame, mainThreadNormalWorld());
94 return JSLazyEventListener::create(attr->localName().string(), eventParameterName(frame->document()->isSVGDocument()), attr->value(), 0, sourceURL, lineNumber, wrapper, mainThreadNormalWorld());
95 }
96
eventListenerHandlerBody(Document * document,EventListener * eventListener)97 String eventListenerHandlerBody(Document* document, EventListener* eventListener)
98 {
99 const JSEventListener* jsListener = JSEventListener::cast(eventListener);
100 if (!jsListener)
101 return "";
102 JSC::JSObject* jsFunction = jsListener->jsFunction(document);
103 if (!jsFunction)
104 return "";
105 return ustringToString(jsFunction->toString(scriptStateFromNode(jsListener->isolatedWorld(), document)));
106 }
107
eventListenerHandlerLocation(Document *,EventListener *,String &,int &)108 bool eventListenerHandlerLocation(Document*, EventListener*, String&, int&)
109 {
110 // FIXME: Add support for getting function location.
111 return false;
112 }
113
114 } // namespace WebCore
115