/*

 * jQuery UI Dialog 1.6

 *

 * Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about)

 * Dual licensed under the MIT (MIT-LICENSE.txt)

 * and GPL (GPL-LICENSE.txt) licenses.

 *

 * http://docs.jquery.com/UI/Dialog

 *

 * Depends:

 *	ui.core.js

 *	ui.draggable.js

 *	ui.resizable.js

 */

(function($) {

var setDataSwitch = {

	dragStart: "start.draggable",

	drag: "drag.draggable",

	dragStop: "stop.draggable",

	maxHeight: "maxHeight.resizable",

	minHeight: "minHeight.resizable",

	maxWidth: "maxWidth.resizable",

	minWidth: "minWidth.resizable",

	resizeStart: "start.resizable",

	resize: "drag.resizable",

	resizeStop: "stop.resizable"

};

$.widget("ui.dialog", {

	_init: function() {

		this.originalTitle = this.element.attr('title');

		this.options.title = this.options.title || this.originalTitle;

		var self = this,

			options = this.options,

			uiDialogContent = this.element

				.removeAttr('title')

				.addClass('ui-dialog-content')

				.wrap('<div></div>')

				.wrap('<div></div>'),

			uiDialogContainer = (this.uiDialogContainer = uiDialogContent.parent())

				.addClass('ui-dialog-container')

				.css({

					position: 'relative',

					width: '100%',

					height: '100%'

				}),

			uiDialogTitlebar = (this.uiDialogTitlebar = $('<div></div>'))

				.addClass('ui-dialog-titlebar')

				.mousedown(function() {

					self.moveToTop();

				})

				.prependTo(uiDialogContainer),

			uiDialogTitlebarClose = $('<a href="#"/>')

				.addClass('ui-dialog-titlebar-close')

				.attr('role', 'button')

				.appendTo(uiDialogTitlebar),

			uiDialogTitlebarCloseText = (this.uiDialogTitlebarCloseText = $('<span/>'))

				.text(options.closeText)

				.appendTo(uiDialogTitlebarClose),

			title = options.title || ' ',

			titleId = $.ui.dialog.getTitleId(this.element),

			uiDialogTitle = $('<span/>')

				.addClass('ui-dialog-title')

				.attr('id', titleId)

				.html(title)

				.prependTo(uiDialogTitlebar),

			uiDialog = (this.uiDialog = uiDialogContainer.parent())

				.appendTo(document.body)

				.hide()

				.addClass('ui-dialog')

				.addClass(options.dialogClass)

				.css({

					position: 'absolute',

					width: options.width,

					height: options.height,

					overflow: 'hidden',

					zIndex: options.zIndex

				})

				// setting tabIndex makes the div focusable

				// setting outline to 0 prevents a border on focus in Mozilla

				.attr('tabIndex', -1).css('outline', 0).keydown(function(ev) {

					(options.closeOnEscape && ev.keyCode

						&& ev.keyCode == $.ui.keyCode.ESCAPE && self.close());

				})

				.attr({

					role: 'dialog',

					'aria-labelledby': titleId

				})

				.mouseup(function() {

					self.moveToTop();

				}),

			uiDialogButtonPane = (this.uiDialogButtonPane = $('<div></div>'))

				.addClass('ui-dialog-buttonpane')

				.css({

					position: 'absolute',

					bottom: 0

				})

				.appendTo(uiDialog),

			uiDialogTitlebarClose = $('.ui-dialog-titlebar-close', uiDialogTitlebar)

				.hover(

					function() {

						$(this).addClass('ui-dialog-titlebar-close-hover');

					},

					function() {

						$(this).removeClass('ui-dialog-titlebar-close-hover');

					}

				)

				.mousedown(function(ev) {

					ev.stopPropagation();

				})

				.click(function() {

					self.close();

					return false;

				});

		uiDialogTitlebar.find("*").add(uiDialogTitlebar).disableSelection();

		(options.draggable && $.fn.draggable && this._makeDraggable());

		(options.resizable && $.fn.resizable && this._makeResizable());

		this._createButtons(options.buttons);

		this._isOpen = false;

		(options.bgiframe && $.fn.bgiframe && uiDialog.bgiframe());

		(options.autoOpen && this.open());

	},

	destroy: function() {

		(this.overlay && this.overlay.destroy());

		this.uiDialog.hide();

		this.element

			.unbind('.dialog')

			.removeData('dialog')

			.removeClass('ui-dialog-content')

			.hide().appendTo('body');

		this.uiDialog.remove();

		(this.originalTitle && this.element.attr('title', this.originalTitle));

	},

	close: function() {

		if (false === this._trigger('beforeclose', null, { options: this.options })) {

			return;

		}

		(this.overlay && this.overlay.destroy());

		this.uiDialog

			.hide(this.options.hide)

			.unbind('keypress.ui-dialog');

		this._trigger('close', null, { options: this.options });

		$.ui.dialog.overlay.resize();

		this._isOpen = false;

	},

	isOpen: function() {

		return this._isOpen;

	},

	// the force parameter allows us to move modal dialogs to their correct

	// position on open

	moveToTop: function(force) {

		if ((this.options.modal && !force)

			|| (!this.options.stack && !this.options.modal)) {

			return this._trigger('focus', null, { options: this.options });

		}

		var maxZ = this.options.zIndex, options = this.options;

		$('.ui-dialog:visible').each(function() {

			maxZ = Math.max(maxZ, parseInt($(this).css('z-index'), 10) || options.zIndex);

		});

		(this.overlay && this.overlay.$el.css('z-index', ++maxZ));

		//Save and then restore scroll since Opera 9.5+ resets when parent z-Index is changed.

		//  http://ui.jquery.com/bugs/ticket/3193

		var saveScroll = { scrollTop: this.element.attr('scrollTop'), scrollLeft: this.element.attr('scrollLeft') };

		this.uiDialog.css('z-index', ++maxZ);

		this.element.attr(saveScroll);

		this._trigger('focus', null, { options: this.options });

	},

	open: function() {

		if (this._isOpen) { return; }

		this.overlay = this.options.modal ? new $.ui.dialog.overlay(this) : null;

		(this.uiDialog.next().length && this.uiDialog.appendTo('body'));

		this._position(this.options.position);

		this.uiDialog.show(this.options.show);

		(this.options.autoResize && this._size());

		this.moveToTop(true);

		// prevent tabbing out of modal dialogs

		(this.options.modal && this.uiDialog.bind('keypress.ui-dialog', function(event) {

			if (event.keyCode != $.ui.keyCode.TAB) {

				return;

			}

			var tabbables = $(':tabbable', this),

				first = tabbables.filter(':first')[0],

				last  = tabbables.filter(':last')[0];

			if (event.target == last && !event.shiftKey) {

				setTimeout(function() {

					first.focus();

				}, 1);

			} else if (event.target == first && event.shiftKey) {

				setTimeout(function() {

					last.focus();

				}, 1);

			}

		}));

		this.uiDialog.find(':tabbable:first').focus();

		this._trigger('open', null, { options: this.options });

		this._isOpen = true;

	},

	_createButtons: function(buttons) {

		var self = this,

			hasButtons = false,

			uiDialogButtonPane = this.uiDialogButtonPane;

		// remove any existing buttons

		uiDialogButtonPane.empty().hide();

		$.each(buttons, function() { return !(hasButtons = true); });

		if (hasButtons) {

			uiDialogButtonPane.show();

			$.each(buttons, function(name, fn) {

				$('<button type="button"></button>')

					.text(name)

					.click(function() { fn.apply(self.element[0], arguments); })

					.appendTo(uiDialogButtonPane);

			});

		}

	},

	_makeDraggable: function() {

		var self = this,

			options = this.options;

		this.uiDialog.draggable({

			cancel: '.ui-dialog-content',

			helper: options.dragHelper,

			handle: '.ui-dialog-titlebar',

			start: function() {

				self.moveToTop();

				(options.dragStart && options.dragStart.apply(self.element[0], arguments));

			},

			drag: function() {

				(options.drag && options.drag.apply(self.element[0], arguments));

			},

			stop: function() {

				(options.dragStop && options.dragStop.apply(self.element[0], arguments));

				$.ui.dialog.overlay.resize();

			}

		});

	},

	_makeResizable: function(handles) {

		handles = (handles === undefined ? this.options.resizable : handles);

		var self = this,

			options = this.options,

			resizeHandles = typeof handles == 'string'

				? handles

				: 'n,e,s,w,se,sw,ne,nw';

		this.uiDialog.resizable({

			cancel: '.ui-dialog-content',

			helper: options.resizeHelper,

			maxWidth: options.maxWidth,

			maxHeight: options.maxHeight,

			minWidth: options.minWidth,

			minHeight: options.minHeight,

			start: function() {

				(options.resizeStart && options.resizeStart.apply(self.element[0], arguments));

			},

			resize: function() {

				(options.autoResize && self._size.apply(self));

				(options.resize && options.resize.apply(self.element[0], arguments));

			},

			handles: resizeHandles,

			stop: function() {

				(options.autoResize && self._size.apply(self));

				(options.resizeStop && options.resizeStop.apply(self.element[0], arguments));

				$.ui.dialog.overlay.resize();

			}

		});

	},

	_position: function(pos) {

		var wnd = $(window), doc = $(document),

			pTop = doc.scrollTop(), pLeft = doc.scrollLeft(),

			minTop = pTop;

		if ($.inArray(pos, ['center','top','right','bottom','left']) >= 0) {

			pos = [

				pos == 'right' || pos == 'left' ? pos : 'center',

				pos == 'top' || pos == 'bottom' ? pos : 'middle'

			];

		}

		if (pos.constructor != Array) {

			pos = ['center', 'middle'];

		}

		if (pos[0].constructor == Number) {

			pLeft += pos[0];

		} else {

			switch (pos[0]) {

				case 'left':

					pLeft += 0;

					break;

				case 'right':

					pLeft += wnd.width() - this.uiDialog.outerWidth();

					break;

				default:

				case 'center':

					pLeft += (wnd.width() - this.uiDialog.outerWidth()) / 2;

			}

		}

		if (pos[1].constructor == Number) {

			pTop += pos[1];

		} else {

			switch (pos[1]) {

				case 'top':

					pTop += 0;

					break;

				case 'bottom':

					// Opera check fixes #3564, can go away with jQuery 1.3

					pTop += ($.browser.opera ? window.innerHeight : wnd.height()) - this.uiDialog.outerHeight();

					break;

				default:

				case 'middle':

					// Opera check fixes #3564, can go away with jQuery 1.3

					pTop += (($.browser.opera ? window.innerHeight : wnd.height()) - this.uiDialog.outerHeight()) / 2;

			}

		}

		// prevent the dialog from being too high (make sure the titlebar

		// is accessible)

		pTop = Math.max(pTop, minTop);

		this.uiDialog.css({top: pTop, left: pLeft});

	},

	_setData: function(key, value){

		(setDataSwitch[key] && this.uiDialog.data(setDataSwitch[key], value));

		switch (key) {

			case "buttons":

				this._createButtons(value);

				break;

			case "closeText":

				this.uiDialogTitlebarCloseText.text(value);

				break;

			case "draggable":

				(value

					? this._makeDraggable()

					: this.uiDialog.draggable('destroy'));

				break;

			case "height":

				this.uiDialog.height(value);

				break;

			case "position":

				this._position(value);

				break;

			case "resizable":

				var uiDialog = this.uiDialog,

					isResizable = this.uiDialog.is(':data(resizable)');

				// currently resizable, becoming non-resizable

				(isResizable && !value && uiDialog.resizable('destroy'));

				// currently resizable, changing handles

				(isResizable && typeof value == 'string' &&

					uiDialog.resizable('option', 'handles', value));

				// currently non-resizable, becoming resizable

				(isResizable || this._makeResizable(value));

				break;

			case "title":

				$(".ui-dialog-title", this.uiDialogTitlebar).html(value || ' ');

				break;

			case "width":

				this.uiDialog.width(value);

				break;

		}

		$.widget.prototype._setData.apply(this, arguments);

	},

	_size: function() {

		var container = this.uiDialogContainer,

			titlebar = this.uiDialogTitlebar,

			content = this.element,

			tbMargin = (parseInt(content.css('margin-top'), 10) || 0)

				+ (parseInt(content.css('margin-bottom'), 10) || 0),

			lrMargin = (parseInt(content.css('margin-left'), 10) || 0)

				+ (parseInt(content.css('margin-right'), 10) || 0);

		content.height(container.height() - titlebar.outerHeight() - tbMargin);

		content.width(container.width() - lrMargin);

	}

});

$.extend($.ui.dialog, {

	version: "1.6",

	defaults: {

		autoOpen: true,

		autoResize: true,

		bgiframe: false,

		buttons: {},

		closeOnEscape: true,

		closeText: 'close',

		draggable: true,

		height: 200,

		minHeight: 100,

		minWidth: 150,

		modal: false,

		overlay: {},

		position: 'center',

		resizable: true,

		stack: true,

		width: 300,

		zIndex: 1000

	},

	getter: 'isOpen',

	uuid: 0,

	getTitleId: function($el) {

		return 'ui-dialog-title-' + ($el.attr('id') || ++this.uuid);

	},

	overlay: function(dialog) {

		this.$el = $.ui.dialog.overlay.create(dialog);

	}

});

$.extend($.ui.dialog.overlay, {

	instances: [],

	events: $.map('focus,mousedown,mouseup,keydown,keypress,click'.split(','),

		function(event) { return event + '.dialog-overlay'; }).join(' '),

	create: function(dialog) {

		if (this.instances.length === 0) {

			// prevent use of anchors and inputs

			// we use a setTimeout in case the overlay is created from an

			// event that we're going to be cancelling (see #2804)

			setTimeout(function() {

				$('a, :input').bind($.ui.dialog.overlay.events, function() {

					// allow use of the element if inside a dialog and

					// - there are no modal dialogs

					// - there are modal dialogs, but we are in front of the topmost modal

					var allow = false;

					var $dialog = $(this).parents('.ui-dialog');

					if ($dialog.length) {

						var $overlays = $('.ui-dialog-overlay');

						if ($overlays.length) {

							var maxZ = parseInt($overlays.css('z-index'), 10);

							$overlays.each(function() {

								maxZ = Math.max(maxZ, parseInt($(this).css('z-index'), 10));

							});

							allow = parseInt($dialog.css('z-index'), 10) > maxZ;

						} else {

							allow = true;

						}

					}

					return allow;

				});

			}, 1);

			// allow closing by pressing the escape key

			$(document).bind('keydown.dialog-overlay', function(event) {

				(dialog.options.closeOnEscape && event.keyCode

						&& event.keyCode == $.ui.keyCode.ESCAPE && dialog.close());

			});

			// handle window resize

			$(window).bind('resize.dialog-overlay', $.ui.dialog.overlay.resize);

		}

		var $el = $('<div></div>').appendTo(document.body)

			.addClass('ui-dialog-overlay').css($.extend({

				borderWidth: 0, margin: 0, padding: 0,

				position: 'absolute', top: 0, left: 0,

				width: this.width(),

				height: this.height()

			}, dialog.options.overlay));

		(dialog.options.bgiframe && $.fn.bgiframe && $el.bgiframe());

		this.instances.push($el);

		return $el;

	},

	destroy: function($el) {

		this.instances.splice($.inArray(this.instances, $el), 1);

		if (this.instances.length === 0) {

			$('a, :input').add([document, window]).unbind('.dialog-overlay');

		}

		$el.remove();

	},

	height: function() {

		// handle IE 6

		if ($.browser.msie && $.browser.version < 7) {

			var scrollHeight = Math.max(

				document.documentElement.scrollHeight,

				document.body.scrollHeight

			);

			var offsetHeight = Math.max(

				document.documentElement.offsetHeight,

				document.body.offsetHeight