third_party/WebKit/Source/bindings/core/v8/RetainedDOMInfo.cpp

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "bindings/core/v8/RetainedDOMInfo.h"

#include "bindings/core/v8/V8Node.h"
#include "bindings/core/v8/WrapperTypeInfo.h"
#include "core/dom/ContainerNode.h"
#include "core/dom/NodeTraversal.h"

namespace blink {

v8::RetainedObjectInfo* RetainedDOMInfo::createRetainedDOMInfo(
    uint16_t classId,
    v8::Local<v8::Value> wrapper) {
  ASSERT(classId == WrapperTypeInfo::NodeClassId);
  if (!wrapper->IsObject())
    return 0;
  Node* node = V8Node::toImpl(wrapper.As<v8::Object>());
  return node ? new RetainedDOMInfo(node) : nullptr;
}

RetainedDOMInfo::RetainedDOMInfo(Node* root) : m_root(root) {
  ASSERT(m_root);
}

RetainedDOMInfo::~RetainedDOMInfo() {}

void RetainedDOMInfo::Dispose() {
  delete this;
}

bool RetainedDOMInfo::IsEquivalent(v8::RetainedObjectInfo* other) {
  ASSERT(other);
  if (other == this)
    return true;
  if (strcmp(GetLabel(), other->GetLabel()))
    return false;
  return static_cast<blink::RetainedObjectInfo*>(other)
             ->GetEquivalenceClass() == this->GetEquivalenceClass();
}

intptr_t RetainedDOMInfo::GetHash() {
  return PtrHash<void>::hash(m_root);
}

const char* RetainedDOMInfo::GetGroupLabel() {
  return m_root->isConnected() ? "(Document DOM trees)"
                               : "(Detached DOM trees)";
}

const char* RetainedDOMInfo::GetLabel() {
  return m_root->isConnected() ? "Document DOM tree" : "Detached DOM tree";
}

intptr_t RetainedDOMInfo::GetElementCount() {
  intptr_t count = 1;
  for (Node& current : NodeTraversal::descendantsOf(*m_root)) {
    ALLOW_UNUSED_LOCAL(current);
    ++count;
  }
  return count;
}

intptr_t RetainedDOMInfo::GetEquivalenceClass() {
  return reinterpret_cast<intptr_t>(m_root.get());
}

ActiveDOMObjectsInfo::ActiveDOMObjectsInfo(
    int numberOfObjectsWithPendingActivity)
    : m_numberOfObjectsWithPendingActivity(numberOfObjectsWithPendingActivity) {
}

ActiveDOMObjectsInfo::~ActiveDOMObjectsInfo() {}

void ActiveDOMObjectsInfo::Dispose() {
  delete this;
}

bool ActiveDOMObjectsInfo::IsEquivalent(v8::RetainedObjectInfo* other) {
  return this == other;
}

intptr_t ActiveDOMObjectsInfo::GetHash() {
  return PtrHash<void>::hash(this);
}

const char* ActiveDOMObjectsInfo::GetGroupLabel() {
  return "(Pending activities group)";
}

const char* ActiveDOMObjectsInfo::GetLabel() {
  return "Pending activities";
}

intptr_t ActiveDOMObjectsInfo::GetElementCount() {
  return m_numberOfObjectsWithPendingActivity;
}

intptr_t ActiveDOMObjectsInfo::GetEquivalenceClass() {
  return reinterpret_cast<intptr_t>(this);
}

}  // namespace blink