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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_COMMAND_UPDATER_IMPL_H_
#define CHROME_BROWSER_COMMAND_UPDATER_IMPL_H_
#include <memory>
#include <unordered_map>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "chrome/browser/command_updater.h"
#include "ui/base/window_open_disposition.h"
class CommandObserver;
class CommandUpdaterDelegate;
////////////////////////////////////////////////////////////////////////////////
//
// CommandUpdaterImpl class
//
// This object manages the enabled state of a set of commands. Observers
// register to listen to changes in this state so they can update their
// presentation.
//
class CommandUpdaterImpl : public CommandUpdater {
public:
// Create a CommandUpdaterImpl with |delegate| to handle the execution of
// specific commands.
explicit CommandUpdaterImpl(CommandUpdaterDelegate* delegate);
CommandUpdaterImpl(const CommandUpdaterImpl&) = delete;
CommandUpdaterImpl& operator=(const CommandUpdaterImpl&) = delete;
~CommandUpdaterImpl() override;
// Overriden from CommandUpdater:
bool SupportsCommand(int id) const override;
bool IsCommandEnabled(int id) const override;
bool ExecuteCommand(
int id,
base::TimeTicks time_stamp = base::TimeTicks::Now()) override;
bool ExecuteCommandWithDisposition(
int id,
WindowOpenDisposition disposition,
base::TimeTicks time_stamp = base::TimeTicks::Now()) override;
void AddCommandObserver(int id, CommandObserver* observer) override;
void RemoveCommandObserver(int id, CommandObserver* observer) override;
void RemoveCommandObserver(CommandObserver* observer) override;
bool UpdateCommandEnabled(int id, bool state) override;
void DisableAllCommands();
std::vector<int> GetAllIds();
private:
// A piece of data about a command - whether or not it is enabled, and a list
// of objects that observe the enabled state of this command.
struct Command;
// Get a Command node for a given command ID, creating an entry if it doesn't
// exist if desired.
Command* GetCommand(int id, bool create);
// The delegate is responsible for executing commands.
raw_ptr<CommandUpdaterDelegate> delegate_;
// This is a map of command IDs to states and observer lists
std::unordered_map<int, std::unique_ptr<Command>> commands_;
};
#endif // CHROME_BROWSER_COMMAND_UPDATER_IMPL_H_
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