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32 #include "bindings/v8/V8NodeFilterCondition.h"
35 #include "bindings/v8/ScriptController.h"
36 #include "bindings/v8/ScriptState.h"
37 #include "core/dom/Node.h"
38 #include "core/dom/NodeFilter.h"
39 #include "wtf/OwnPtr.h"
43 V8NodeFilterCondition::V8NodeFilterCondition(v8::Handle<v8::Value> filter, v8::Handle<v8::Object> owner, v8::Isolate* isolate)
44 : m_filter(isolate, filter)
46 setHiddenValue(isolate, owner, "condition", filter);
47 m_filter.setWeak(this, &setWeakCallback);
50 V8NodeFilterCondition::~V8NodeFilterCondition()
54 short V8NodeFilterCondition::acceptNode(ScriptState* state, Node* node) const
56 v8::Isolate* isolate = state->isolate();
57 ASSERT(isolate->InContext());
58 v8::HandleScope handleScope(isolate);
59 v8::Handle<v8::Value> filter = m_filter.newLocal(isolate);
60 ASSERT(!filter.IsEmpty());
61 if (!filter->IsObject())
62 return NodeFilter::FILTER_ACCEPT;
64 v8::TryCatch exceptionCatcher;
66 v8::Handle<v8::Function> callback;
67 if (filter->IsFunction())
68 callback = v8::Handle<v8::Function>::Cast(filter);
70 v8::Local<v8::Value> value = filter->ToObject()->Get(v8AtomicString(isolate, "acceptNode"));
71 if (!value->IsFunction()) {
72 throwTypeError("NodeFilter object does not have an acceptNode function", state->isolate());
73 return NodeFilter::FILTER_REJECT;
75 callback = v8::Handle<v8::Function>::Cast(value);
78 OwnPtr<v8::Handle<v8::Value>[]> info = adoptArrayPtr(new v8::Handle<v8::Value>[1]);
79 info[0] = toV8(node, v8::Handle<v8::Object>(), state->isolate());
81 v8::Handle<v8::Object> object = isolate->GetCurrentContext()->Global();
82 v8::Handle<v8::Value> result = ScriptController::callFunction(state->executionContext(), callback, object, 1, info.get(), isolate);
84 if (exceptionCatcher.HasCaught()) {
85 state->setException(exceptionCatcher.Exception());
86 return NodeFilter::FILTER_REJECT;
89 ASSERT(!result.IsEmpty());
91 return result->Int32Value();
94 void V8NodeFilterCondition::setWeakCallback(const v8::WeakCallbackData<v8::Value, V8NodeFilterCondition>& data)
96 data.GetParameter()->m_filter.clear();
99 } // namespace WebCore