/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */
 
// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage

/*
 * Conversion parameters:
 * inFile  = 
 * outPack = glib
 * outFile = Timeout
 * strct   = 
 * realStrct=
 * ctorStrct=
 * clss    = Timeout
 * interf  = 
 * class Code: Yes
 * interface Code: No
 * template for:
 * extend  = 
 * implements:
 * prefixes:
 * 	- g_timeout_
 * omit structs:
 * omit prefixes:
 * omit code:
 * omit signals:
 * imports:
 * 	- glib.Source
 * structWrap:
 * 	- GSource* -> Source
 * module aliases:
 * local aliases:
 * overrides:
 */

module glib.Timeout;

public  import gtkc.glibtypes;

private import gtkc.glib;
private import glib.ConstructionException;

private import glib.Source;



/**
 * The main event loop manages all the available sources of events for
 * GLib and GTK+ applications. These events can come from any number of
 * different types of sources such as file descriptors (plain files,
 * pipes or sockets) and timeouts. New types of event sources can also
 * be added using g_source_attach().
 *
 * To allow multiple independent sets of sources to be handled in
 * different threads, each source is associated with a GMainContext.
 * A GMainContext can only be running in a single thread, but
 * sources can be added to it and removed from it from other threads.
 *
 * Each event source is assigned a priority. The default priority,
 * G_PRIORITY_DEFAULT, is 0. Values less than 0 denote higher priorities.
 * Values greater than 0 denote lower priorities. Events from high priority
 * sources are always processed before events from lower priority sources.
 *
 * Idle functions can also be added, and assigned a priority. These will
 * be run whenever no events with a higher priority are ready to be processed.
 *
 * The GMainLoop data type represents a main event loop. A GMainLoop is
 * created with g_main_loop_new(). After adding the initial event sources,
 * g_main_loop_run() is called. This continuously checks for new events from
 * each of the event sources and dispatches them. Finally, the processing of
 * an event from one of the sources leads to a call to g_main_loop_quit() to
 * exit the main loop, and g_main_loop_run() returns.
 *
 * It is possible to create new instances of GMainLoop recursively.
 * This is often used in GTK+ applications when showing modal dialog
 * boxes. Note that event sources are associated with a particular
 * GMainContext, and will be checked and dispatched for all main
 * loops associated with that GMainContext.
 *
 * GTK+ contains wrappers of some of these functions, e.g. gtk_main(),
 * gtk_main_quit() and gtk_events_pending().
 *
 * Creating new source types
 *
 * One of the unusual features of the GMainLoop functionality
 * is that new types of event source can be created and used in
 * addition to the builtin type of event source. A new event source
 * type is used for handling GDK events. A new source type is created
 * by deriving from the GSource structure.
 * The derived type of source is represented by a structure that has
 * the GSource structure as a first element, and other elements specific
 * to the new source type. To create an instance of the new source type,
 * call g_source_new() passing in the size of the derived structure and
 * a table of functions. These GSourceFuncs determine the behavior of
 * the new source type.
 *
 * New source types basically interact with the main context
 * in two ways. Their prepare function in GSourceFuncs can set a timeout
 * to determine the maximum amount of time that the main loop will sleep
 * before checking the source again. In addition, or as well, the source
 * can add file descriptors to the set that the main context checks using
 * g_source_add_poll().
 *
 * <hr>
 *
 * Customizing the main loop iteration
 *
 * Single iterations of a GMainContext can be run with
 * g_main_context_iteration(). In some cases, more detailed control
 * of exactly how the details of the main loop work is desired, for
 * instance, when integrating the GMainLoop with an external main loop.
 * In such cases, you can call the component functions of
 * g_main_context_iteration() directly. These functions are
 * g_main_context_prepare(), g_main_context_query(),
 * g_main_context_check() and g_main_context_dispatch().
 *
 * The operation of these functions can best be seen in terms
 * of a state diagram, as shown in Figure 1, “States of a Main Context”.
 *
 * Figure 1. States of a Main Context
 *
 * On Unix, the GLib mainloop is incompatible with fork(). Any program
 * using the mainloop must either exec() or exit() from the child
 * without returning to the mainloop.
 */
public class Timeout
{
	
	/** Holds all timeout delegates */
	bool delegate()[] timeoutListeners;
	/** our gtk timeout ID */
	uint timeoutID;
	
	
	/**
	 * Creates a new timeout cycle with the default priority, GPriority.DEFAULT.
	 *
	 * Note that timeout functions may be delayed, due to the processing of other
	 * event sources. Thus they should not be relied on for precise timing.
	 * After each call to the timeout function, the time of the next timeout is
	 * recalculated based on the current time and the given interval
	 * (it does not try to 'catch up' time lost in delays).
	 * Params:
	 *    	interval = 	the timeout in milieconds
	 *    	delegate() = 	the delegate to be executed
	 *    	fireNow = 	When true the delegate will be executed emmidiatly
	 */
	this(uint interval, bool delegate() dlg, bool fireNow=false)
	{
		timeoutListeners ~= dlg;
		timeoutID = g_timeout_add(interval, cast(GSourceFunc)&timeoutCallback, cast(void*)this);
		if ( fireNow )
		{
			if ( !dlg() )
			{
				timeoutListeners.length = 0;
			}
		}
	}
	
	/**
	 * Creates a new timeout cycle.
	 * Params:
	 *    	interval = 	the timeout in milieconds
	 *    	delegate() = 	the delegate to be executed
	 *      priority = Priority for the timeout function
	 *    	fireNow = 	When true the delegate will be executed emmidiatly
	 */
	this(uint interval, bool delegate() dlg, GPriority priority, bool fireNow=false)
	{
		timeoutListeners ~= dlg;
		timeoutID = g_timeout_add_full(priority, interval, cast(GSourceFunc)&timeoutCallback, cast(void*)this, null);
		if ( fireNow )
		{
			if ( !dlg() )
			{
				timeoutListeners.length = 0;
			}
		}
	}
	
	/**
	 * Creates a new timeout cycle with the default priority, GPriority.DEFAULT.
	 * Params:
	 *    	delegate() = 	the delegate to be executed
	 *      seconds = interval in seconds.
	 *    	fireNow = 	When true the delegate will be executed emmidiatly
	 */
	this(bool delegate() dlg, uint seconds, bool fireNow=false)
	{
		timeoutListeners ~= dlg;
		timeoutID = g_timeout_add_seconds(seconds, cast(GSourceFunc)&timeoutCallback, cast(void*)this);
		if ( fireNow )
		{
			if ( !dlg() )
			{
				timeoutListeners.length = 0;
			}
		}
	}
	
	/**
	 * Creates a new timeout cycle.
	 * Params:
	 *    	delegate() = 	the delegate to be executed
	 *      seconds = interval in seconds.
	 *      priority = Priority for the timeout function
	 *    	fireNow = 	When true the delegate will be executed emmidiatly
	 */
	this(bool delegate() dlg, uint seconds, GPriority priority, bool fireNow=false)
	{
		timeoutListeners ~= dlg;
		timeoutID = g_timeout_add_seconds_full(priority, seconds, cast(GSourceFunc)&timeoutCallback, cast(void*)this, null);
		if ( fireNow )
		{
			if ( !dlg() )
			{
				timeoutListeners.length = 0;
			}
		}
	}
	
	/** */
	public void stop()
	{
		if ( timeoutID > 0 )
		{
			g_source_remove(timeoutID);
		}
		timeoutListeners.length = 0;
	}
	
	/**
	 * Removes the timeout from gtk
	 */
	~this()
	{
		stop();
	}
	
	/**
	 * Adds a new delegate to this timeout cycle
	 * Params:
	 *    	dlg =
	 *    	fireNow =
	 */
	public void addListener(bool delegate() dlg, bool fireNow=false)
	{
		timeoutListeners ~= dlg;
		if ( fireNow )
		{
			if ( !dlg() )
			{
				timeoutListeners.length = timeoutListeners.length - 1;
			}
		}
	}
	
	/**
	 * The callback execution from glib
	 * Params:
	 *    	timeout =
	 * Returns:
	 */
	extern(C) static bool timeoutCallback(Timeout timeout)
	{
		return timeout.callAllListeners();
	}
	
	/**
	 * Executes all delegates on the execution list
	 * Returns:
	 */
	private bool callAllListeners()
	{
		bool runAgain = false;
		
		int i = 0;
		
		while ( i<timeoutListeners.length )
		{
			if ( !timeoutListeners[i]() )
			{
				timeoutListeners = timeoutListeners[0..i] ~ timeoutListeners[i+1..timeoutListeners.length];
			}
			else
			{
				runAgain = true;
				++i;
			}
		}
		return runAgain;
	}
	
	/**
	 */
	
	/**
	 * Creates a new timeout source.
	 * The source will not initially be associated with any GMainContext
	 * and must be added to one with g_source_attach() before it will be
	 * executed.
	 * The interval given is in terms of monotonic time, not wall clock
	 * time. See g_get_monotonic_time().
	 * Params:
	 * interval = the timeout interval in milliseconds.
	 * Returns: the newly-created timeout source
	 */
	public static Source sourceNew(uint interval)
	{
		// GSource * g_timeout_source_new (guint interval);
		auto p = g_timeout_source_new(interval);
		
		if(p is null)
		{
			return null;
		}
		
		return new Source(cast(GSource*) p);
	}
	
	/**
	 * Creates a new timeout source.
	 * The source will not initially be associated with any GMainContext
	 * and must be added to one with g_source_attach() before it will be
	 * executed.
	 * The scheduling granularity/accuracy of this timeout source will be
	 * in seconds.
	 * The interval given in terms of monotonic time, not wall clock time.
	 * See g_get_monotonic_time().
	 * Since 2.14
	 * Params:
	 * interval = the timeout interval in seconds
	 * Returns: the newly-created timeout source
	 */
	public static Source sourceNewSeconds(uint interval)
	{
		// GSource * g_timeout_source_new_seconds (guint interval);
		auto p = g_timeout_source_new_seconds(interval);
		
		if(p is null)
		{
			return null;
		}
		
		return new Source(cast(GSource*) p);
	}
	
	/**
	 * Sets a function to be called at regular intervals, with the default
	 * priority, G_PRIORITY_DEFAULT. The function is called repeatedly
	 * until it returns FALSE, at which point the timeout is automatically
	 * destroyed and the function will not be called again. The first call
	 * to the function will be at the end of the first interval.
	 * Note that timeout functions may be delayed, due to the processing of other
	 * event sources. Thus they should not be relied on for precise timing.
	 * After each call to the timeout function, the time of the next
	 * timeout is recalculated based on the current time and the given interval
	 * (it does not try to 'catch up' time lost in delays).
	 * If you want to have a timer in the "seconds" range and do not care
	 * about the exact time of the first call of the timer, use the
	 * g_timeout_add_seconds() function; this function allows for more
	 * optimizations and more efficient system power usage.
	 * This internally creates a main loop source using g_timeout_source_new()
	 * and attaches it to the main loop context using g_source_attach(). You can
	 * do these steps manually if you need greater control.
	 * The interval given is in terms of monotonic time, not wall clock
	 * time. See g_get_monotonic_time().
	 * Params:
	 * interval = the time between calls to the function, in milliseconds
	 * (1/1000ths of a second)
	 * data = data to pass to function
	 * Returns: the ID (greater than 0) of the event source.
	 */
	public static uint add(uint interval, GSourceFunc funct, void* data)
	{
		// guint g_timeout_add (guint interval,  GSourceFunc function,  gpointer data);
		return g_timeout_add(interval, funct, data);
	}
	
	/**
	 * Sets a function to be called at regular intervals, with the given
	 * priority. The function is called repeatedly until it returns
	 * FALSE, at which point the timeout is automatically destroyed and
	 * the function will not be called again. The notify function is
	 * called when the timeout is destroyed. The first call to the
	 * function will be at the end of the first interval.
	 * Note that timeout functions may be delayed, due to the processing of other
	 * event sources. Thus they should not be relied on for precise timing.
	 * After each call to the timeout function, the time of the next
	 * timeout is recalculated based on the current time and the given interval
	 * (it does not try to 'catch up' time lost in delays).
	 * This internally creates a main loop source using g_timeout_source_new()
	 * and attaches it to the main loop context using g_source_attach(). You can
	 * do these steps manually if you need greater control.
	 * The interval given in terms of monotonic time, not wall clock time.
	 * See g_get_monotonic_time().
	 * Params:
	 * priority = the priority of the timeout source. Typically this will be in
	 * the range between G_PRIORITY_DEFAULT and G_PRIORITY_HIGH.
	 * interval = the time between calls to the function, in milliseconds
	 * (1/1000ths of a second)
	 * data = data to pass to function
	 * notify = function to call when the timeout is removed, or NULL. [allow-none]
	 * Returns: the ID (greater than 0) of the event source. Rename to: g_timeout_add
	 */
	public static uint addFull(int priority, uint interval, GSourceFunc funct, void* data, GDestroyNotify notify)
	{
		// guint g_timeout_add_full (gint priority,  guint interval,  GSourceFunc function,  gpointer data,  GDestroyNotify notify);
		return g_timeout_add_full(priority, interval, funct, data, notify);
	}
	
	/**
	 * Sets a function to be called at regular intervals with the default
	 * priority, G_PRIORITY_DEFAULT. The function is called repeatedly until
	 * it returns FALSE, at which point the timeout is automatically destroyed
	 * and the function will not be called again.
	 * This internally creates a main loop source using
	 * g_timeout_source_new_seconds() and attaches it to the main loop context
	 * using g_source_attach(). You can do these steps manually if you need
	 * greater control. Also see g_timeout_add_seconds_full().
	 * Note that the first call of the timer may not be precise for timeouts
	 * of one second. If you need finer precision and have such a timeout,
	 * you may want to use g_timeout_add() instead.
	 * The interval given is in terms of monotonic time, not wall clock
	 * time. See g_get_monotonic_time().
	 * Since 2.14
	 * Params:
	 * interval = the time between calls to the function, in seconds
	 * data = data to pass to function
	 * Returns: the ID (greater than 0) of the event source.
	 */
	public static uint addSeconds(uint interval, GSourceFunc funct, void* data)
	{
		// guint g_timeout_add_seconds (guint interval,  GSourceFunc function,  gpointer data);
		return g_timeout_add_seconds(interval, funct, data);
	}
	
	/**
	 * Sets a function to be called at regular intervals, with priority.
	 * The function is called repeatedly until it returns FALSE, at which
	 * point the timeout is automatically destroyed and the function will
	 * not be called again.
	 * Unlike g_timeout_add(), this function operates at whole second granularity.
	 * The initial starting point of the timer is determined by the implementation
	 * and the implementation is expected to group multiple timers together so that
	 * they fire all at the same time.
	 * To allow this grouping, the interval to the first timer is rounded
	 * and can deviate up to one second from the specified interval.
	 * Subsequent timer iterations will generally run at the specified interval.
	 * Note that timeout functions may be delayed, due to the processing of other
	 * event sources. Thus they should not be relied on for precise timing.
	 * After each call to the timeout function, the time of the next
	 * timeout is recalculated based on the current time and the given interval
	 * If you want timing more precise than whole seconds, use g_timeout_add()
	 * instead.
	 * The grouping of timers to fire at the same time results in a more power
	 * and CPU efficient behavior so if your timer is in multiples of seconds
	 * and you don't require the first timer exactly one second from now, the
	 * use of g_timeout_add_seconds() is preferred over g_timeout_add().
	 * This internally creates a main loop source using
	 * g_timeout_source_new_seconds() and attaches it to the main loop context
	 * using g_source_attach(). You can do these steps manually if you need
	 * greater control.
	 * The interval given is in terms of monotonic time, not wall clock
	 * time. See g_get_monotonic_time().
	 * Since 2.14
	 * Params:
	 * priority = the priority of the timeout source. Typically this will be in
	 * the range between G_PRIORITY_DEFAULT and G_PRIORITY_HIGH.
	 * interval = the time between calls to the function, in seconds
	 * data = data to pass to function
	 * notify = function to call when the timeout is removed, or NULL. [allow-none]
	 * Returns: the ID (greater than 0) of the event source. Rename to: g_timeout_add_seconds
	 */
	public static uint addSecondsFull(int priority, uint interval, GSourceFunc funct, void* data, GDestroyNotify notify)
	{
		// guint g_timeout_add_seconds_full (gint priority,  guint interval,  GSourceFunc function,  gpointer data,  GDestroyNotify notify);
		return g_timeout_add_seconds_full(priority, interval, funct, data, notify);
	}
}