1 /*
2 * Copyright (C) 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 #include "config.h"
32 #include "HTMLDocument.h"
33
34 #include "Frame.h"
35 #include "HTMLCollection.h"
36 #include "HTMLIFrameElement.h"
37 #include "HTMLNames.h"
38
39 #include "V8Binding.h"
40 #include "V8CustomBinding.h"
41 #include "V8Proxy.h"
42
43 #include <wtf/RefPtr.h>
44 #include <wtf/StdLibExtras.h>
45
46 namespace WebCore {
47
NAMED_PROPERTY_DELETER(HTMLDocument)48 NAMED_PROPERTY_DELETER(HTMLDocument)
49 {
50 // Only handle document.all. Insert the marker object into the
51 // shadow internal field to signal that document.all is no longer
52 // shadowed.
53 AtomicString key = v8StringToAtomicWebCoreString(name);
54 DEFINE_STATIC_LOCAL(const AtomicString, all, ("all"));
55 if (key != all)
56 return deletionNotHandledByInterceptor();
57
58 ASSERT(info.Holder()->InternalFieldCount() == kHTMLDocumentInternalFieldCount);
59 v8::Local<v8::Value> marker = info.Holder()->GetInternalField(kHTMLDocumentMarkerIndex);
60 info.Holder()->SetInternalField(kHTMLDocumentShadowIndex, marker);
61 return v8::True();
62 }
63
NAMED_PROPERTY_GETTER(HTMLDocument)64 NAMED_PROPERTY_GETTER(HTMLDocument)
65 {
66 INC_STATS("DOM.HTMLDocument.NamedPropertyGetter");
67 AtomicString key = v8StringToAtomicWebCoreString(name);
68
69 // Special case for document.all. If the value in the shadow
70 // internal field is not the marker object, then document.all has
71 // been temporarily shadowed and we return the value.
72 DEFINE_STATIC_LOCAL(const AtomicString, all, ("all"));
73 if (key == all) {
74 ASSERT(info.Holder()->InternalFieldCount() == kHTMLDocumentInternalFieldCount);
75 v8::Local<v8::Value> marker = info.Holder()->GetInternalField(kHTMLDocumentMarkerIndex);
76 v8::Local<v8::Value> value = info.Holder()->GetInternalField(kHTMLDocumentShadowIndex);
77 if (marker != value)
78 return value;
79 }
80
81 HTMLDocument* htmlDocument = V8DOMWrapper::convertDOMWrapperToNode<HTMLDocument>(info.Holder());
82
83 // Fast case for named elements that are not there.
84 if (!htmlDocument->hasNamedItem(key.impl()) && !htmlDocument->hasExtraNamedItem(key.impl()))
85 return v8::Handle<v8::Value>();
86
87 RefPtr<HTMLCollection> items = htmlDocument->documentNamedItems(key);
88 if (!items->length())
89 return notHandledByInterceptor();
90
91 if (items->length() == 1) {
92 Node* node = items->firstItem();
93 Frame* frame = 0;
94 if (node->hasTagName(HTMLNames::iframeTag) && (frame = static_cast<HTMLIFrameElement*>(node)->contentFrame()))
95 return V8DOMWrapper::convertToV8Object(V8ClassIndex::DOMWINDOW, frame->domWindow());
96
97 return V8DOMWrapper::convertNodeToV8Object(node);
98 }
99
100 return V8DOMWrapper::convertToV8Object(V8ClassIndex::HTMLCOLLECTION, items.release());
101 }
102
103 // HTMLDocument ----------------------------------------------------------------
104
105 // Concatenates "args" to a string. If args is empty, returns empty string.
106 // Firefox/Safari/IE support non-standard arguments to document.write, ex:
107 // document.write("a", "b", "c") --> document.write("abc")
108 // document.write() --> document.write("")
writeHelperGetString(const v8::Arguments & args)109 static String writeHelperGetString(const v8::Arguments& args)
110 {
111 String str = "";
112 for (int i = 0; i < args.Length(); ++i)
113 str += toWebCoreString(args[i]);
114 return str;
115 }
116
CALLBACK_FUNC_DECL(HTMLDocumentWrite)117 CALLBACK_FUNC_DECL(HTMLDocumentWrite)
118 {
119 INC_STATS("DOM.HTMLDocument.write()");
120 HTMLDocument* htmlDocument = V8DOMWrapper::convertDOMWrapperToNode<HTMLDocument>(args.Holder());
121 Frame* frame = V8Proxy::retrieveFrameForCallingContext();
122 ASSERT(frame);
123 htmlDocument->write(writeHelperGetString(args), frame->document());
124 return v8::Undefined();
125 }
126
CALLBACK_FUNC_DECL(HTMLDocumentWriteln)127 CALLBACK_FUNC_DECL(HTMLDocumentWriteln)
128 {
129 INC_STATS("DOM.HTMLDocument.writeln()");
130 HTMLDocument* htmlDocument = V8DOMWrapper::convertDOMWrapperToNode<HTMLDocument>(args.Holder());
131 Frame* frame = V8Proxy::retrieveFrameForCallingContext();
132 ASSERT(frame);
133 htmlDocument->writeln(writeHelperGetString(args), frame->document());
134 return v8::Undefined();
135 }
136
CALLBACK_FUNC_DECL(HTMLDocumentOpen)137 CALLBACK_FUNC_DECL(HTMLDocumentOpen)
138 {
139 INC_STATS("DOM.HTMLDocument.open()");
140 HTMLDocument* htmlDocument = V8DOMWrapper::convertDOMWrapperToNode<HTMLDocument>(args.Holder());
141
142 if (args.Length() > 2) {
143 if (Frame* frame = htmlDocument->frame()) {
144 // Fetch the global object for the frame.
145 v8::Local<v8::Context> context = V8Proxy::context(frame);
146 // Bail out if we cannot get the context.
147 if (context.IsEmpty())
148 return v8::Undefined();
149 v8::Local<v8::Object> global = context->Global();
150 // Get the open property of the global object.
151 v8::Local<v8::Value> function = global->Get(v8::String::New("open"));
152 // If the open property is not a function throw a type error.
153 if (!function->IsFunction()) {
154 throwError("open is not a function");
155 return v8::Undefined();
156 }
157 // Wrap up the arguments and call the function.
158 v8::Local<v8::Value>* params = new v8::Local<v8::Value>[args.Length()];
159 for (int i = 0; i < args.Length(); i++)
160 params[i] = args[i];
161
162 V8Proxy* proxy = V8Proxy::retrieve(frame);
163 ASSERT(proxy);
164
165 v8::Local<v8::Value> result = proxy->callFunction(v8::Local<v8::Function>::Cast(function), global, args.Length(), params);
166 delete[] params;
167 return result;
168 }
169 }
170
171 Frame* frame = V8Proxy::retrieveFrameForCallingContext();
172 htmlDocument->open(frame->document());
173 // Return the document.
174 return args.Holder();
175 }
176
ACCESSOR_GETTER(HTMLDocumentAll)177 ACCESSOR_GETTER(HTMLDocumentAll)
178 {
179 INC_STATS("DOM.HTMLDocument.all._get");
180 v8::HandleScope scope;
181 v8::Handle<v8::Object> holder = info.Holder();
182 HTMLDocument* htmlDocument = V8DOMWrapper::convertDOMWrapperToNode<HTMLDocument>(holder);
183 return V8DOMWrapper::convertToV8Object(V8ClassIndex::HTMLCOLLECTION, htmlDocument->all());
184 }
185
ACCESSOR_SETTER(HTMLDocumentAll)186 ACCESSOR_SETTER(HTMLDocumentAll)
187 {
188 INC_STATS("DOM.HTMLDocument.all._set");
189 v8::Handle<v8::Object> holder = info.Holder();
190 ASSERT(info.Holder()->InternalFieldCount() == kHTMLDocumentInternalFieldCount);
191 info.Holder()->SetInternalField(kHTMLDocumentShadowIndex, value);
192 }
193
194 } // namespace WebCore
195