/**

 * PubSub

 *

 * A lightweight publish/subscribe implementation.

 * Private use only!

 */

var PubSub, fullscreen, wptitlehint;

PubSub = function() {

	this.topics = {};

};

PubSub.prototype.subscribe = function( topic, callback ) {

	if ( ! this.topics[ topic ] )

		this.topics[ topic ] = [];

	this.topics[ topic ].push( callback );

	return callback;

};

PubSub.prototype.unsubscribe = function( topic, callback ) {

	var i, l,

		topics = this.topics[ topic ];

	if ( ! topics )

		return callback || [];

	// Clear matching callbacks

	if ( callback ) {

		for ( i = 0, l = topics.length; i < l; i++ ) {

			if ( callback == topics[i] )

				topics.splice( i, 1 );

		}

		return callback;

	// Clear all callbacks

	} else {

		this.topics[ topic ] = [];

		return topics;

	}

};

PubSub.prototype.publish = function( topic, args ) {

	var i, l, broken,

		topics = this.topics[ topic ];

	if ( ! topics )

		return;

	args = args || [];

	for ( i = 0, l = topics.length; i < l; i++ ) {

		broken = ( topics[i].apply( null, args ) === false || broken );

	}

	return ! broken;

};

/**

 * Distraction Free Writing

 * (wp-fullscreen)

 *

 * Access the API globally using the fullscreen variable.

 */

(function($){

	var api, ps, bounder, s;

	// Initialize the fullscreen/api object

	fullscreen = api = {};

	// Create the PubSub (publish/subscribe) interface.

	ps = api.pubsub = new PubSub();

	timer = 0;

	block = false;

	s = api.settings = { // Settings

		visible : false,

		mode : 'tinymce',

		editor_id : 'content',

		title_id : '',

		timer : 0,

		toolbar_shown : false

	}

	/**

	 * Bounder

	 *

	 * Creates a function that publishes start/stop topics.

	 * Used to throttle events.

	 */

	bounder = api.bounder = function( start, stop, delay, e ) {

		var y, top;

		delay = delay || 1250;

		if ( e ) {

			y = e.pageY || e.clientY || e.offsetY;

			top = $(document).scrollTop();

			if ( !e.isDefaultPrevented ) // test if e ic jQuery normalized

				y = 135 + y;

			if ( y - top > 120 )

				return;

		}

		if ( block )

			return;

		block = true;

		setTimeout( function() {

			block = false;

		}, 400 );

		if ( s.timer )

			clearTimeout( s.timer );

		else

			ps.publish( start );

		function timed() {

			ps.publish( stop );

			s.timer = 0;

		}

		s.timer = setTimeout( timed, delay );

	};

	/**

	 * on()

	 *

	 * Turns fullscreen on.

	 *

	 * @param string mode Optional. Switch to the given mode before opening.

	 */

	api.on = function() {

		if ( s.visible )

			return;

		// Settings can be added or changed by defining "wp_fullscreen_settings" JS object.

		if ( typeof(wp_fullscreen_settings) == 'object' )

			$.extend( s, wp_fullscreen_settings );

		s.editor_id = wpActiveEditor || 'content';

		if ( $('input#title').length && s.editor_id == 'content' )

			s.title_id = 'title';

		else if ( $('input#' + s.editor_id + '-title').length ) // the title input field should have [editor_id]-title HTML ID to be auto detected

			s.title_id = s.editor_id + '-title';

		else

			$('#wp-fullscreen-title, #wp-fullscreen-title-prompt-text').hide();

		s.mode = $('#' + s.editor_id).is(':hidden') ? 'tinymce' : 'html';

		s.qt_canvas = $('#' + s.editor_id).get(0);

		if ( ! s.element )

			api.ui.init();

		s.is_mce_on = s.has_tinymce && typeof( tinyMCE.get(s.editor_id) ) != 'undefined';

		api.ui.fade( 'show', 'showing', 'shown' );

	};

	/**

	 * off()

	 *

	 * Turns fullscreen off.

	 */

	api.off = function() {

		if ( ! s.visible )

			return;

		api.ui.fade( 'hide', 'hiding', 'hidden' );

	};

	/**

	 * switchmode()

	 *

	 * @return string - The current mode.

	 *

	 * @param string to - The fullscreen mode to switch to.

	 * @event switchMode

	 * @eventparam string to   - The new mode.

	 * @eventparam string from - The old mode.

	 */

	api.switchmode = function( to ) {

		var from = s.mode;

		if ( ! to || ! s.visible || ! s.has_tinymce )

			return from;

		// Don't switch if the mode is the same.

		if ( from == to )

			return from;

		ps.publish( 'switchMode', [ from, to ] );

		s.mode = to;

		ps.publish( 'switchedMode', [ from, to ] );

		return to;

	};

	/**

	 * General

	 */

	api.save = function() {

		var hidden = $('#hiddenaction'), old = hidden.val(), spinner = $('#wp-fullscreen-save img'),

			message = $('#wp-fullscreen-save span');

		spinner.show();

		api.savecontent();

		hidden.val('wp-fullscreen-save-post');

		$.post( ajaxurl, $('form#post').serialize(), function(r){

			spinner.hide();

			message.show();

			setTimeout( function(){

				message.fadeOut(1000);

			}, 3000 );

			if ( r.last_edited )

				$('#wp-fullscreen-save input').attr( 'title',  r.last_edited );

		}, 'json');

		hidden.val(old);

	}

	api.savecontent = function() {

		var ed, content;

		if ( s.title_id )

			$('#' + s.title_id).val( $('#wp-fullscreen-title').val() );

		if ( s.mode === 'tinymce' && (ed = tinyMCE.get('wp_mce_fullscreen')) ) {

			content = ed.save();

		} else {

			content = $('#wp_mce_fullscreen').val();

		}

		$('#' + s.editor_id).val( content );

		$(document).triggerHandler('wpcountwords', [ content ]);

	}

	set_title_hint = function( title ) {

		if ( ! title.val().length )

			title.siblings('label').css( 'visibility', '' );

		else

			title.siblings('label').css( 'visibility', 'hidden' );

	}

	api.dfw_width = function(n) {

		var el = $('#wp-fullscreen-wrap'), w = el.width();

		if ( !n ) { // reset to theme width

			el.width( $('#wp-fullscreen-central-toolbar').width() );

			deleteUserSetting('dfw_width');

			return;

		}

		w = n + w;

		if ( w < 200 || w > 1200 ) // sanity check

			return;

		el.width( w );

		setUserSetting('dfw_width', w);

	}

	ps.subscribe( 'showToolbar', function() {

		s.toolbars.removeClass('fade-1000').addClass('fade-300');

		api.fade.In( s.toolbars, 300, function(){ ps.publish('toolbarShown'); }, true );

		$('#wp-fullscreen-body').addClass('wp-fullscreen-focus');

		s.toolbar_shown = true;

	});

	ps.subscribe( 'hideToolbar', function() {

		s.toolbars.removeClass('fade-300').addClass('fade-1000');

		api.fade.Out( s.toolbars, 1000, function(){ ps.publish('toolbarHidden'); }, true );

		$('#wp-fullscreen-body').removeClass('wp-fullscreen-focus');

	});

	ps.subscribe( 'toolbarShown', function() {

		s.toolbars.removeClass('fade-300');

	});

	ps.subscribe( 'toolbarHidden', function() {

		s.toolbars.removeClass('fade-1000');

		s.toolbar_shown = false;

	});

	ps.subscribe( 'show', function() { // This event occurs before the overlay blocks the UI.

		var title;

		if ( s.title_id ) {

			title = $('#wp-fullscreen-title').val( $('#' + s.title_id).val() );

			set_title_hint( title );

		}

		$('#wp-fullscreen-save input').attr( 'title',  $('#last-edit').text() );

		s.textarea_obj.value = s.qt_canvas.value;

		if ( s.has_tinymce && s.mode === 'tinymce' )

			tinyMCE.execCommand('wpFullScreenInit');

		s.orig_y = $(window).scrollTop();

	});

	ps.subscribe( 'showing', function() { // This event occurs while the DFW overlay blocks the UI.

		$( document.body ).addClass( 'fullscreen-active' );

		api.refresh_buttons();

		$( document ).bind( 'mousemove.fullscreen', function(e) { bounder( 'showToolbar', 'hideToolbar', 2000, e ); } );

		bounder( 'showToolbar', 'hideToolbar', 2000 );

		api.bind_resize();

		setTimeout( api.resize_textarea, 200 );

		// scroll to top so the user is not disoriented

		scrollTo(0, 0);

		// needed it for IE7 and compat mode

		$('#wpadminbar').hide();

	});

	ps.subscribe( 'shown', function() { // This event occurs after the DFW overlay is shown

		var interim_init;

		s.visible = true;

		// init the standard TinyMCE instance if missing

		if ( s.has_tinymce && ! s.is_mce_on ) {

			interim_init = function(mce, ed) {

				var el = ed.getElement(), old_val = el.value, settings = tinyMCEPreInit.mceInit[s.editor_id];

				if ( settings && settings.wpautop && typeof(switchEditors) != 'undefined' )

					el.value = switchEditors.wpautop( el.value );

				ed.onInit.add(function(ed) {

					ed.hide();

					ed.getElement().value = old_val;

					tinymce.onAddEditor.remove(interim_init);

				});

			};

			tinymce.onAddEditor.add(interim_init);

			tinyMCE.init(tinyMCEPreInit.mceInit[s.editor_id]);

			s.is_mce_on = true;

		}

		wpActiveEditor = 'wp_mce_fullscreen';

	});

	ps.subscribe( 'hide', function() { // This event occurs before the overlay blocks DFW.

		var htmled_is_hidden = $('#' + s.editor_id).is(':hidden');

		// Make sure the correct editor is displaying.

		if ( s.has_tinymce && s.mode === 'tinymce' && !htmled_is_hidden ) {