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// Copyright 2009 Daniel Erat <dan@erat.org>
// All rights reserved.
#ifndef __XSETTINGSD_SETTINGS_MANAGER_H__
#define __XSETTINGSD_SETTINGS_MANAGER_H__
#include <stdint.h>
#include <string>
#include <vector>
#include <X11/Xlib.h>
#include "common.h"
#include "setting.h"
namespace xsettingsd {
class DataWriter;
// SettingsManager is the central class responsible for loading and parsing
// configs (via ConfigParser), storing them (in the form of Setting
// objects), and setting them as properties on X11 windows.
class SettingsManager {
public:
SettingsManager(const std::string& config_filename);
~SettingsManager();
// Load settings from 'config_filename_', updating 'settings_' and
// 'serial_' if successful. If the load was unsuccessful, false is
// returned and an error is printed to stderr.
bool LoadConfig();
// Connect to the X server, create windows, updates their properties, and
// take the selections. A negative screen value will attempt to take the
// manager selection on all screens. Returns false if someone else
// already has a selection unless 'replace_existing_manager' is set.
bool InitX11(int screen, bool replace_existing_manager);
// Wait for events from the X server, destroying our windows and exiting
// if we see someone else take a selection.
void RunEventLoop();
private:
// Destroy all windows in 'windows_'.
void DestroyWindows();
// Create and initialize a window.
bool CreateWindow(int screen, Window* win_out, Time* timestamp_out);
// Write the currently-loaded property to the passed-in buffer.
bool WriteProperty(DataWriter* writer);
// Update the settings property on the passed-in window.
void SetPropertyOnWindow(Window win, const char* data, size_t size);
// Manage XSETTINGS for a particular screen.
bool ManageScreen(
int screen, Window win, Time timestamp, bool replace_existing_manager);
// File from which we load settings.
std::string config_filename_;
// Currently-loaded settings.
SettingsMap settings_;
// Current serial number.
uint32_t serial_;
// Connection to the X server.
Display* display_;
// Atom representing "_XSETTINGS_SETTINGS".
Atom prop_atom_;
// Windows that we've created to hold settings properties (one per
// screen).
std::vector<Window> windows_;
DISALLOW_COPY_AND_ASSIGN(SettingsManager);
};
} // namespace xsettingsd
#endif
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