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| 1 /* | |
| 2 * Copyright (C) 2013 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 "bindings/core/v8/V8CustomElementLifecycleCallbacks.h" | |
| 32 | |
| 33 #include "bindings/core/v8/CustomElementBinding.h" | |
| 34 #include "bindings/core/v8/DOMDataStore.h" | |
| 35 #include "bindings/core/v8/ScriptController.h" | |
| 36 #include "bindings/core/v8/V8Binding.h" | |
| 37 #include "bindings/core/v8/V8Element.h" | |
| 38 #include "bindings/core/v8/V8HiddenValue.h" | |
| 39 #include "bindings/core/v8/V8PerContextData.h" | |
| 40 #include "core/dom/ExecutionContext.h" | |
| 41 #include "wtf/PassOwnPtr.h" | |
| 42 | |
| 43 namespace blink { | |
| 44 | |
| 45 #define CALLBACK_LIST(V) \ | |
| 46 V(created, CreatedCallback) \ | |
| 47 V(attached, AttachedCallback) \ | |
| 48 V(detached, DetachedCallback) \ | |
| 49 V(attributeChanged, AttributeChangedCallback) | |
| 50 | |
| 51 V8CustomElementLifecycleCallbacks* V8CustomElementLifecycleCallbacks::create(Scr
iptState* scriptState, v8::Local<v8::Object> prototype, v8::MaybeLocal<v8::Funct
ion> created, v8::MaybeLocal<v8::Function> attached, v8::MaybeLocal<v8::Function
> detached, v8::MaybeLocal<v8::Function> attributeChanged) | |
| 52 { | |
| 53 v8::Isolate* isolate = scriptState->isolate(); | |
| 54 // A given object can only be used as a Custom Element prototype | |
| 55 // once; see customElementIsInterfacePrototypeObject | |
| 56 #define SET_HIDDEN_VALUE(Value, Name) \ | |
| 57 ASSERT(V8HiddenValue::getHiddenValue(scriptState, prototype, V8HiddenValue::
customElement##Name(isolate)).IsEmpty()); \ | |
| 58 if (!Value.IsEmpty()) \ | |
| 59 V8HiddenValue::setHiddenValue(scriptState, prototype, V8HiddenValue::cus
tomElement##Name(isolate), Value.ToLocalChecked()); | |
| 60 | |
| 61 CALLBACK_LIST(SET_HIDDEN_VALUE) | |
| 62 #undef SET_HIDDEN_VALUE | |
| 63 | |
| 64 return new V8CustomElementLifecycleCallbacks(scriptState, prototype, created
, attached, detached, attributeChanged); | |
| 65 } | |
| 66 | |
| 67 static CustomElementLifecycleCallbacks::CallbackType flagSet(v8::MaybeLocal<v8::
Function> attached, v8::MaybeLocal<v8::Function> detached, v8::MaybeLocal<v8::Fu
nction> attributeChanged) | |
| 68 { | |
| 69 // V8 Custom Elements always run created to swizzle prototypes. | |
| 70 int flags = CustomElementLifecycleCallbacks::CreatedCallback; | |
| 71 | |
| 72 if (!attached.IsEmpty()) | |
| 73 flags |= CustomElementLifecycleCallbacks::AttachedCallback; | |
| 74 | |
| 75 if (!detached.IsEmpty()) | |
| 76 flags |= CustomElementLifecycleCallbacks::DetachedCallback; | |
| 77 | |
| 78 if (!attributeChanged.IsEmpty()) | |
| 79 flags |= CustomElementLifecycleCallbacks::AttributeChangedCallback; | |
| 80 | |
| 81 return CustomElementLifecycleCallbacks::CallbackType(flags); | |
| 82 } | |
| 83 | |
| 84 template <typename T> | |
| 85 static void weakCallback(const v8::WeakCallbackInfo<ScopedPersistent<T>>& data) | |
| 86 { | |
| 87 data.GetParameter()->clear(); | |
| 88 } | |
| 89 | |
| 90 V8CustomElementLifecycleCallbacks::V8CustomElementLifecycleCallbacks(ScriptState
* scriptState, v8::Local<v8::Object> prototype, v8::MaybeLocal<v8::Function> cre
ated, v8::MaybeLocal<v8::Function> attached, v8::MaybeLocal<v8::Function> detach
ed, v8::MaybeLocal<v8::Function> attributeChanged) | |
| 91 : CustomElementLifecycleCallbacks(flagSet(attached, detached, attributeChang
ed)) | |
| 92 , ContextLifecycleObserver(scriptState->getExecutionContext()) | |
| 93 , m_scriptState(scriptState) | |
| 94 , m_prototype(scriptState->isolate(), prototype) | |
| 95 , m_created(scriptState->isolate(), created) | |
| 96 , m_attached(scriptState->isolate(), attached) | |
| 97 , m_detached(scriptState->isolate(), detached) | |
| 98 , m_attributeChanged(scriptState->isolate(), attributeChanged) | |
| 99 { | |
| 100 m_prototype.setWeak(&m_prototype, weakCallback<v8::Object>); | |
| 101 | |
| 102 #define MAKE_WEAK(Var, _) \ | |
| 103 if (!m_##Var.isEmpty()) \ | |
| 104 m_##Var.setWeak(&m_##Var, weakCallback<v8::Function>); | |
| 105 | |
| 106 CALLBACK_LIST(MAKE_WEAK) | |
| 107 #undef MAKE_WEAK | |
| 108 } | |
| 109 | |
| 110 V8PerContextData* V8CustomElementLifecycleCallbacks::creationContextData() | |
| 111 { | |
| 112 if (!getExecutionContext()) | |
| 113 return 0; | |
| 114 | |
| 115 v8::Local<v8::Context> context = m_scriptState->context(); | |
| 116 if (context.IsEmpty()) | |
| 117 return 0; | |
| 118 | |
| 119 return V8PerContextData::from(context); | |
| 120 } | |
| 121 | |
| 122 V8CustomElementLifecycleCallbacks::~V8CustomElementLifecycleCallbacks() | |
| 123 { | |
| 124 } | |
| 125 | |
| 126 bool V8CustomElementLifecycleCallbacks::setBinding(PassOwnPtr<CustomElementBindi
ng> binding) | |
| 127 { | |
| 128 V8PerContextData* perContextData = creationContextData(); | |
| 129 if (!perContextData) | |
| 130 return false; | |
| 131 | |
| 132 // The context is responsible for keeping the prototype | |
| 133 // alive. This in turn keeps callbacks alive through hidden | |
| 134 // references; see CALLBACK_LIST(SET_HIDDEN_VALUE). | |
| 135 perContextData->addCustomElementBinding(std::move(binding)); | |
| 136 return true; | |
| 137 } | |
| 138 | |
| 139 void V8CustomElementLifecycleCallbacks::created(Element* element) | |
| 140 { | |
| 141 // FIXME: callbacks while paused should be queued up for execution to | |
| 142 // continue then be delivered in order rather than delivered immediately. | |
| 143 // Bug 329665 tracks similar behavior for other synchronous events. | |
| 144 if (!getExecutionContext() || getExecutionContext()->activeDOMObjectsAreStop
ped()) | |
| 145 return; | |
| 146 | |
| 147 if (!m_scriptState->contextIsValid()) | |
| 148 return; | |
| 149 | |
| 150 element->setCustomElementState(Element::Upgraded); | |
| 151 | |
| 152 ScriptState::Scope scope(m_scriptState.get()); | |
| 153 v8::Isolate* isolate = m_scriptState->isolate(); | |
| 154 v8::Local<v8::Context> context = m_scriptState->context(); | |
| 155 v8::Local<v8::Value> receiverValue = toV8(element, context->Global(), isolat
e); | |
| 156 if (receiverValue.IsEmpty()) | |
| 157 return; | |
| 158 v8::Local<v8::Object> receiver = receiverValue.As<v8::Object>(); | |
| 159 | |
| 160 // Swizzle the prototype of the wrapper. | |
| 161 v8::Local<v8::Object> prototype = m_prototype.newLocal(isolate); | |
| 162 if (prototype.IsEmpty()) | |
| 163 return; | |
| 164 if (!v8CallBoolean(receiver->SetPrototype(context, prototype))) | |
| 165 return; | |
| 166 | |
| 167 v8::Local<v8::Function> callback = m_created.newLocal(isolate); | |
| 168 if (callback.IsEmpty()) | |
| 169 return; | |
| 170 | |
| 171 v8::TryCatch exceptionCatcher(isolate); | |
| 172 exceptionCatcher.SetVerbose(true); | |
| 173 ScriptController::callFunction(getExecutionContext(), callback, receiver, 0,
0, isolate); | |
| 174 } | |
| 175 | |
| 176 void V8CustomElementLifecycleCallbacks::attached(Element* element) | |
| 177 { | |
| 178 call(m_attached, element); | |
| 179 } | |
| 180 | |
| 181 void V8CustomElementLifecycleCallbacks::detached(Element* element) | |
| 182 { | |
| 183 call(m_detached, element); | |
| 184 } | |
| 185 | |
| 186 void V8CustomElementLifecycleCallbacks::attributeChanged(Element* element, const
AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue) | |
| 187 { | |
| 188 // FIXME: callbacks while paused should be queued up for execution to | |
| 189 // continue then be delivered in order rather than delivered immediately. | |
| 190 // Bug 329665 tracks similar behavior for other synchronous events. | |
| 191 if (!getExecutionContext() || getExecutionContext()->activeDOMObjectsAreStop
ped()) | |
| 192 return; | |
| 193 | |
| 194 if (!m_scriptState->contextIsValid()) | |
| 195 return; | |
| 196 ScriptState::Scope scope(m_scriptState.get()); | |
| 197 v8::Isolate* isolate = m_scriptState->isolate(); | |
| 198 v8::Local<v8::Context> context = m_scriptState->context(); | |
| 199 v8::Local<v8::Value> receiver = toV8(element, context->Global(), isolate); | |
| 200 if (receiver.IsEmpty()) | |
| 201 return; | |
| 202 | |
| 203 v8::Local<v8::Function> callback = m_attributeChanged.newLocal(isolate); | |
| 204 if (callback.IsEmpty()) | |
| 205 return; | |
| 206 | |
| 207 v8::Local<v8::Value> argv[] = { | |
| 208 v8String(isolate, name), | |
| 209 oldValue.isNull() ? v8::Local<v8::Value>(v8::Null(isolate)) : v8::Local<
v8::Value>(v8String(isolate, oldValue)), | |
| 210 newValue.isNull() ? v8::Local<v8::Value>(v8::Null(isolate)) : v8::Local<
v8::Value>(v8String(isolate, newValue)) | |
| 211 }; | |
| 212 | |
| 213 v8::TryCatch exceptionCatcher(isolate); | |
| 214 exceptionCatcher.SetVerbose(true); | |
| 215 ScriptController::callFunction(getExecutionContext(), callback, receiver, WT
F_ARRAY_LENGTH(argv), argv, isolate); | |
| 216 } | |
| 217 | |
| 218 void V8CustomElementLifecycleCallbacks::call(const ScopedPersistent<v8::Function
>& weakCallback, Element* element) | |
| 219 { | |
| 220 // FIXME: callbacks while paused should be queued up for execution to | |
| 221 // continue then be delivered in order rather than delivered immediately. | |
| 222 // Bug 329665 tracks similar behavior for other synchronous events. | |
| 223 if (!getExecutionContext() || getExecutionContext()->activeDOMObjectsAreStop
ped()) | |
| 224 return; | |
| 225 | |
| 226 if (!m_scriptState->contextIsValid()) | |
| 227 return; | |
| 228 ScriptState::Scope scope(m_scriptState.get()); | |
| 229 v8::Isolate* isolate = m_scriptState->isolate(); | |
| 230 v8::Local<v8::Context> context = m_scriptState->context(); | |
| 231 v8::Local<v8::Function> callback = weakCallback.newLocal(isolate); | |
| 232 if (callback.IsEmpty()) | |
| 233 return; | |
| 234 | |
| 235 v8::Local<v8::Value> receiver = toV8(element, context->Global(), isolate); | |
| 236 if (receiver.IsEmpty()) | |
| 237 return; | |
| 238 | |
| 239 v8::TryCatch exceptionCatcher(isolate); | |
| 240 exceptionCatcher.SetVerbose(true); | |
| 241 ScriptController::callFunction(getExecutionContext(), callback, receiver, 0,
0, isolate); | |
| 242 } | |
| 243 | |
| 244 DEFINE_TRACE(V8CustomElementLifecycleCallbacks) | |
| 245 { | |
| 246 CustomElementLifecycleCallbacks::trace(visitor); | |
| 247 ContextLifecycleObserver::trace(visitor); | |
| 248 } | |
| 249 | |
| 250 } // namespace blink | |
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Chromium Code Reviews
Issue 1914923002:
Rename all existing custom element classes as V0 (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master