platform_system_core/init/action.h

90 lines
2.9 KiB
C++

/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _INIT_ACTION_H
#define _INIT_ACTION_H
#include <map>
#include <queue>
#include <string>
#include <vector>
class Action {
public:
Action();
void AddCommand(int (*f)(const std::vector<std::string>& args),
const std::vector<std::string>& args,
const std::string& filename = "", int line = 0);
bool InitTriggers(const std::vector<std::string>& args, std::string* err);
bool InitSingleTrigger(const std::string& trigger);
std::size_t NumCommands() const;
void ExecuteOneCommand(std::size_t command) const;
void ExecuteAllCommands() const;
bool CheckEventTrigger(const std::string& trigger) const;
bool CheckPropertyTrigger(const std::string& name,
const std::string& value) const;
bool TriggersEqual(const class Action& other) const;
std::string BuildTriggersString() const;
void DumpState() const;
private:
class Command;
void ExecuteCommand(const Command& command) const;
bool CheckPropertyTriggers(const std::string& name = "",
const std::string& value = "") const;
bool ParsePropertyTrigger(const std::string& trigger, std::string* err);
std::map<std::string, std::string> property_triggers_;
std::string event_trigger_;
std::vector<Command*> commands_;
};
class Trigger {
public:
virtual ~Trigger() { }
virtual bool CheckTriggers(const Action* action) = 0;
};
class ActionManager {
public:
static ActionManager& GetInstance();
void QueueEventTrigger(const std::string& trigger);
void QueuePropertyTrigger(const std::string& name, const std::string& value);
void QueueAllPropertyTriggers();
void QueueBuiltinAction(int (*func)(const std::vector<std::string>& args),
const std::string& name);
void ExecuteOneCommand();
bool HasMoreCommands() const;
Action* AddNewAction(const std::vector<std::string>& triggers,
std::string* err);
void DumpState() const;
private:
ActionManager();
ActionManager(ActionManager const&) = delete;
void operator=(ActionManager const&) = delete;
std::vector<Action*> actions_;
std::queue<std::unique_ptr<Trigger>> trigger_queue_;
std::vector<Action*> current_executing_actions_;
std::size_t current_command_;
};
#endif