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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/dom/custom/CustomElementReaction.h"
#include "core/dom/custom/CustomElementReactionQueue.h"
#include "core/dom/custom/CustomElementReactionStack.h"
#include "platform/heap/Handle.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "wtf/Functional.h"
#include "wtf/Noncopyable.h"
#include <initializer_list>
#include <memory>
#include <vector>
namespace blink {
class Element;
class Command : public GarbageCollectedFinalized<Command> {
WTF_MAKE_NONCOPYABLE(Command);
public:
Command() = default;
virtual ~Command() = default;
DEFINE_INLINE_VIRTUAL_TRACE() {}
virtual void run(Element*) = 0;
};
class Call : public Command {
WTF_MAKE_NONCOPYABLE(Call);
public:
using Callback = WTF::Function<void(Element*)>;
Call(std::unique_ptr<Callback> callback) : m_callback(std::move(callback)) {}
~Call() override = default;
void run(Element* element) override { m_callback->operator()(element); }
private:
std::unique_ptr<Callback> m_callback;
};
class Unreached : public Command {
WTF_MAKE_NONCOPYABLE(Unreached);
public:
Unreached(const char* message) : m_message(message) {}
~Unreached() override = default;
void run(Element*) override { EXPECT_TRUE(false) << m_message; }
private:
const char* m_message;
};
class Log : public Command {
WTF_MAKE_NONCOPYABLE(Log);
public:
Log(char what, std::vector<char>& where) : m_what(what), m_where(where) {}
~Log() override = default;
void run(Element*) override { m_where.push_back(m_what); }
private:
char m_what;
std::vector<char>& m_where;
};
class Recurse : public Command {
WTF_MAKE_NONCOPYABLE(Recurse);
public:
Recurse(CustomElementReactionQueue* queue) : m_queue(queue) {}
~Recurse() override = default;
DEFINE_INLINE_VIRTUAL_TRACE() {
Command::trace(visitor);
visitor->trace(m_queue);
}
void run(Element* element) override { m_queue->invokeReactions(element); }
private:
Member<CustomElementReactionQueue> m_queue;
};
class Enqueue : public Command {
WTF_MAKE_NONCOPYABLE(Enqueue);
public:
Enqueue(CustomElementReactionQueue* queue, CustomElementReaction* reaction)
: m_queue(queue), m_reaction(reaction) {}
~Enqueue() override = default;
DEFINE_INLINE_VIRTUAL_TRACE() {
Command::trace(visitor);
visitor->trace(m_queue);
visitor->trace(m_reaction);
}
void run(Element*) override { m_queue->add(m_reaction); }
private:
Member<CustomElementReactionQueue> m_queue;
Member<CustomElementReaction> m_reaction;
};
class TestReaction : public CustomElementReaction {
WTF_MAKE_NONCOPYABLE(TestReaction);
public:
TestReaction(std::initializer_list<Command*> commands)
: CustomElementReaction(nullptr) {
// TODO(dominicc): Simply pass the initializer list when
// HeapVector supports initializer lists like Vector.
for (auto& command : commands)
m_commands.push_back(command);
}
~TestReaction() override = default;
DEFINE_INLINE_VIRTUAL_TRACE() {
CustomElementReaction::trace(visitor);
visitor->trace(m_commands);
}
void invoke(Element* element) override {
for (auto& command : m_commands)
command->run(element);
}
private:
HeapVector<Member<Command>> m_commands;
};
class ResetCustomElementReactionStackForTest final {
STACK_ALLOCATED();
WTF_MAKE_NONCOPYABLE(ResetCustomElementReactionStackForTest);
public:
ResetCustomElementReactionStackForTest()
: m_stack(new CustomElementReactionStack),
m_oldStack(
CustomElementReactionStackTestSupport::setCurrentForTest(m_stack)) {
}
~ResetCustomElementReactionStackForTest() {
CustomElementReactionStackTestSupport::setCurrentForTest(m_oldStack);
}
CustomElementReactionStack& stack() { return *m_stack; }
private:
Member<CustomElementReactionStack> m_stack;
Member<CustomElementReactionStack> m_oldStack;
};
} // namespace blink
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