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 "V8HTMLDocument.h" 33 34 #include "Frame.h" 35 #include "HTMLAllCollection.h" 36 #include "HTMLDocument.h" 37 #include "HTMLCollection.h" 38 #include "HTMLIFrameElement.h" 39 #include "HTMLNames.h" 40 #include "V8Binding.h" 41 #include "V8DOMWindow.h" 42 #include "V8HTMLAllCollection.h" 43 #include "V8HTMLCollection.h" 44 #include "V8IsolatedContext.h" 45 #include "V8Node.h" 46 #include "V8Proxy.h" 47 #include <wtf/RefPtr.h> 48 #include <wtf/StdLibExtras.h> 49 50 namespace WebCore { 51 52 v8::Handle<v8::Boolean> V8HTMLDocument::namedPropertyDeleter(v8::Local<v8::String> name, const v8::AccessorInfo& info) 53 { 54 // Only handle document.all. Insert the marker object into the 55 // shadow internal field to signal that document.all is no longer 56 // shadowed. 57 AtomicString key = v8StringToAtomicWebCoreString(name); 58 DEFINE_STATIC_LOCAL(const AtomicString, all, ("all")); 59 if (key != all) 60 return deletionNotHandledByInterceptor(); 61 62 ASSERT(info.Holder()->InternalFieldCount() == V8HTMLDocument::internalFieldCount); 63 v8::Local<v8::Value> marker = info.Holder()->GetInternalField(V8HTMLDocument::markerIndex); 64 info.Holder()->SetInternalField(V8HTMLDocument::shadowIndex, marker); 65 return v8::True(); 66 } 67 68 v8::Handle<v8::Value> V8HTMLDocument::namedPropertyGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info) 69 { 70 INC_STATS("DOM.HTMLDocument.NamedPropertyGetter"); 71 AtomicString key = v8StringToAtomicWebCoreString(name); 72 73 // Special case for document.all. If the value in the shadow 74 // internal field is not the marker object, then document.all has 75 // been temporarily shadowed and we return the value. 76 DEFINE_STATIC_LOCAL(const AtomicString, all, ("all")); 77 if (key == all) { 78 ASSERT(info.Holder()->InternalFieldCount() == V8HTMLDocument::internalFieldCount); 79 v8::Local<v8::Value> marker = info.Holder()->GetInternalField(V8HTMLDocument::markerIndex); 80 v8::Local<v8::Value> value = info.Holder()->GetInternalField(V8HTMLDocument::shadowIndex); 81 if (marker != value) 82 return value; 83 } 84 85 HTMLDocument* htmlDocument = V8HTMLDocument::toNative(info.Holder()); 86 87 // Fast case for named elements that are not there. 88 if (!htmlDocument->hasNamedItem(key.impl()) && !htmlDocument->hasExtraNamedItem(key.impl())) 89 return v8::Handle<v8::Value>(); 90 91 RefPtr<HTMLCollection> items = htmlDocument->documentNamedItems(key); 92 if (!items->length()) 93 return notHandledByInterceptor(); 94 95 if (items->length() == 1) { 96 Node* node = items->firstItem(); 97 Frame* frame = 0; 98 if (node->hasTagName(HTMLNames::iframeTag) && (frame = static_cast<HTMLIFrameElement*>(node)->contentFrame())) 99 return toV8(frame->domWindow()); 100 101 return toV8(node); 102 } 103 104 return toV8(items.release()); 105 } 106 107 v8::Handle<v8::Value> V8HTMLDocument::indexedPropertyGetter(uint32_t index, const v8::AccessorInfo &info) 108 { 109 INC_STATS("DOM.HTMLDocument.IndexedPropertyGetter"); 110 v8::Local<v8::Integer> indexV8 = v8::Integer::NewFromUnsigned(index); 111 return namedPropertyGetter(indexV8->ToString(), info); 112 } 113 114 // HTMLDocument ---------------------------------------------------------------- 115 116 // Concatenates "args" to a string. If args is empty, returns empty string. 117 // Firefox/Safari/IE support non-standard arguments to document.write, ex: 118 // document.write("a", "b", "c") --> document.write("abc") 119 // document.write() --> document.write("") 120 static String writeHelperGetString(const v8::Arguments& args) 121 { 122 String str = ""; 123 for (int i = 0; i < args.Length(); ++i) 124 str += toWebCoreString(args[i]); 125 return str; 126 } 127 128 v8::Handle<v8::Value> V8HTMLDocument::writeCallback(const v8::Arguments& args) 129 { 130 INC_STATS("DOM.HTMLDocument.write()"); 131 HTMLDocument* htmlDocument = V8HTMLDocument::toNative(args.Holder()); 132 Frame* frame = V8Proxy::retrieveFrameForCallingContext(); 133 htmlDocument->write(writeHelperGetString(args), frame ? frame->document() : NULL); 134 return v8::Undefined(); 135 } 136 137 v8::Handle<v8::Value> V8HTMLDocument::writelnCallback(const v8::Arguments& args) 138 { 139 INC_STATS("DOM.HTMLDocument.writeln()"); 140 HTMLDocument* htmlDocument = V8HTMLDocument::toNative(args.Holder()); 141 Frame* frame = V8Proxy::retrieveFrameForCallingContext(); 142 htmlDocument->writeln(writeHelperGetString(args), frame ? frame->document() : NULL); 143 return v8::Undefined(); 144 } 145 146 v8::Handle<v8::Value> V8HTMLDocument::openCallback(const v8::Arguments& args) 147 { 148 INC_STATS("DOM.HTMLDocument.open()"); 149 HTMLDocument* htmlDocument = V8HTMLDocument::toNative(args.Holder()); 150 151 if (args.Length() > 2) { 152 if (Frame* frame = htmlDocument->frame()) { 153 // Fetch the global object for the frame. 154 v8::Local<v8::Context> context = V8Proxy::context(frame); 155 // Bail out if we cannot get the context. 156 if (context.IsEmpty()) 157 return v8::Undefined(); 158 v8::Local<v8::Object> global = context->Global(); 159 // Get the open property of the global object. 160 v8::Local<v8::Value> function = global->Get(v8::String::New("open")); 161 // If the open property is not a function throw a type error. 162 if (!function->IsFunction()) { 163 throwError("open is not a function"); 164 return v8::Undefined(); 165 } 166 // Wrap up the arguments and call the function. 167 v8::Local<v8::Value>* params = new v8::Local<v8::Value>[args.Length()]; 168 for (int i = 0; i < args.Length(); i++) 169 params[i] = args[i]; 170 171 V8Proxy* proxy = V8Proxy::retrieve(frame); 172 ASSERT(proxy); 173 174 v8::Local<v8::Value> result = proxy->callFunction(v8::Local<v8::Function>::Cast(function), global, args.Length(), params); 175 delete[] params; 176 return result; 177 } 178 } 179 180 Frame* frame = V8Proxy::retrieveFrameForCallingContext(); 181 htmlDocument->open(frame ? frame->document() : NULL); 182 // Return the document. 183 return args.Holder(); 184 } 185 186 v8::Handle<v8::Value> V8HTMLDocument::allAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info) 187 { 188 INC_STATS("DOM.HTMLDocument.all._get"); 189 v8::Handle<v8::Object> holder = info.Holder(); 190 HTMLDocument* htmlDocument = V8HTMLDocument::toNative(holder); 191 return toV8(htmlDocument->all()); 192 } 193 194 void V8HTMLDocument::allAccessorSetter(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::AccessorInfo& info) 195 { 196 INC_STATS("DOM.HTMLDocument.all._set"); 197 v8::Handle<v8::Object> holder = info.Holder(); 198 ASSERT(info.Holder()->InternalFieldCount() == V8HTMLDocument::internalFieldCount); 199 info.Holder()->SetInternalField(V8HTMLDocument::shadowIndex, value); 200 } 201 202 v8::Handle<v8::Value> toV8(HTMLDocument* impl, bool forceNewObject) 203 { 204 if (!impl) 205 return v8::Null(); 206 v8::Handle<v8::Object> wrapper = V8HTMLDocument::wrap(impl, forceNewObject); 207 if (wrapper.IsEmpty()) 208 return wrapper; 209 if (!V8IsolatedContext::getEntered()) { 210 if (V8Proxy* proxy = V8Proxy::retrieve(impl->frame())) 211 proxy->windowShell()->updateDocumentWrapper(wrapper); 212 } 213 // Create marker object and insert it in two internal fields. 214 // This is used to implement temporary shadowing of document.all. 215 ASSERT(wrapper->InternalFieldCount() == V8HTMLDocument::internalFieldCount); 216 v8::Local<v8::Object> marker = v8::Object::New(); 217 wrapper->SetInternalField(V8HTMLDocument::markerIndex, marker); 218 wrapper->SetInternalField(V8HTMLDocument::shadowIndex, marker); 219 return wrapper; 220 } 221 222 } // namespace WebCore 223
