/*
* jQuery UI Dialog 1.7.2
*
* Copyright (c) 2009 AUTHORS.txt (http://jqueryui.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"
	},

	uiDialogClasses =
		'ui-dialog ' +
		'ui-widget ' +
		'ui-widget-content ' +
		'ui-corner-all ';

	$.widget("ui.dialog", {

		_init: function() {
			this.originalTitle = this.element.attr('title');

			var self = this,
			options = this.options,

			title = options.title || this.originalTitle || ' ',
			titleId = $.ui.dialog.getTitleId(this.element),

			uiDialog = (this.uiDialog = $('<div/>'))
				.appendTo(document.body)
				.hide()
				.addClass(uiDialogClasses + options.dialogClass)
				.css({
					position: 'absolute',
					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(event) {
					(options.closeOnEscape && event.keyCode
						&& event.keyCode == $.ui.keyCode.ESCAPE && self.close(event));
				})
				.attr({
					role: 'dialog',
					'aria-labelledby': titleId
				})
				.mousedown(function(event) {
					self.moveToTop(false, event);
				}),

			uiDialogContent = this.element
				.show()
				.removeAttr('title')
				.addClass(
					'ui-dialog-content ' +
					'ui-widget-content')
				.appendTo(uiDialog),

			uiDialogTitlebar = (this.uiDialogTitlebar = $('<div></div>'))
				.addClass(
					'ui-dialog-titlebar ' +
					'ui-widget-header ' +
					'ui-corner-all ' +
					'ui-helper-clearfix'
				)
				.prependTo(uiDialog),

			uiDialogTitlebarClose = $('<a href="#"/>')
				.addClass(
					'ui-dialog-titlebar-close ' +
					'ui-corner-all'
				)
				.attr('role', 'button')
				.hover(
					function() {
						uiDialogTitlebarClose.addClass('ui-state-hover');
					},
					function() {
						uiDialogTitlebarClose.removeClass('ui-state-hover');
					}
				)
				.focus(function() {
					uiDialogTitlebarClose.addClass('ui-state-focus');
				})
				.blur(function() {
					uiDialogTitlebarClose.removeClass('ui-state-focus');
				})
				.mousedown(function(ev) {
					ev.stopPropagation();
				})
				.click(function(event) {
					self.close(event);
					return false;
				})
				.appendTo(uiDialogTitlebar),

			uiDialogTitlebarCloseText = (this.uiDialogTitlebarCloseText = $('<span/>'))
				.addClass(
					'ui-icon ' +
					'ui-icon-closethick'
				)
				.text(options.closeText)
				.appendTo(uiDialogTitlebarClose),

			uiDialogTitle = $('<span/>')
				.addClass('ui-dialog-title')
				.attr('id', titleId)
				.html(title)
				.prependTo(uiDialogTitlebar);

			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 ui-widget-content')
			.hide().appendTo('body');
			this.uiDialog.remove();

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

		close: function(event) {
			var self = this;

			if (false === self._trigger('beforeclose', event)) {
				return;
			}

			(self.overlay && self.overlay.destroy());
			self.uiDialog.unbind('keypress.ui-dialog');

			(self.options.hide
			? self.uiDialog.hide(self.options.hide, function() {
				self._trigger('close', event);
			})
			: self.uiDialog.hide() && self._trigger('close', event));

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

			self._isOpen = false;

			// adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
			if (self.options.modal) {
				var maxZ = 0;
				$('.ui-dialog').each(function() {
					if (this != self.uiDialog[0]) {
						maxZ = Math.max(maxZ, $(this).css('z-index'));
					}
				});
				$.ui.dialog.maxZ = maxZ;
			}
		},

		isOpen: function() {
			return this._isOpen;
		},

		// the force parameter allows us to move modal dialogs to their correct
		// position on open
		moveToTop: function(force, event) {

			if ((this.options.modal && !force)
			|| (!this.options.stack && !this.options.modal)) {
				return this._trigger('focus', event);
			}

			if (this.options.zIndex > $.ui.dialog.maxZ) {
				$.ui.dialog.maxZ = this.options.zIndex;
			}
			(this.overlay && this.overlay.$el.css('z-index', $.ui.dialog.overlay.maxZ = ++$.ui.dialog.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', ++$.ui.dialog.maxZ);
			this.element.attr(saveScroll);
			this._trigger('focus', event);
		},

		open: function() {
			if (this._isOpen) { return; }

			var options = this.options,
			uiDialog = this.uiDialog;

			this.overlay = options.modal ? new $.ui.dialog.overlay(this) : null;
			(uiDialog.next().length && uiDialog.appendTo('body'));
			this._size();
			this._position(options.position);
			uiDialog.show(options.show);
			this.moveToTop(true);

			// prevent tabbing out of modal dialogs
			(options.modal && 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);
				}
			}));

			// set focus to the first tabbable element in the content area or the first button
			// if there are no tabbable elements, set focus on the dialog itself
			$([])
			.add(uiDialog.find('.ui-dialog-content :tabbable:first'))
			.add(uiDialog.find('.ui-dialog-buttonpane :tabbable:first'))
			.add(uiDialog)
			.filter(':first')
			.focus();

			this._trigger('open');
			this._isOpen = true;
		},

		_createButtons: function(buttons) {
			var self = this,
			hasButtons = false,
			uiDialogButtonPane = $('<div></div>')
				.addClass(
					'ui-dialog-buttonpane ' +
					'ui-widget-content ' +
					'ui-helper-clearfix'
				);

			// if we already have a button pane, remove it
			this.uiDialog.find('.ui-dialog-buttonpane').remove();

			(typeof buttons == 'object' && buttons !== null &&
			$.each(buttons, function() { return !(hasButtons = true); }));
			if (hasButtons) {
				$.each(buttons, function(name, fn) {
					$('<button type="button"></button>')
					.addClass(
						'ui-state-default ' +
						'ui-corner-all'
					)
					.text(name)
					.click(function() { fn.apply(self.element[0], arguments); })
					.hover(
						function() {
							$(this).addClass('ui-state-hover');
						},
						function() {
							$(this).removeClass('ui-state-hover');
						}
					)
					.focus(function() {
						$(this).addClass('ui-state-focus');
					})
					.blur(function() {
						$(this).removeClass('ui-state-focus');
					})
					.appendTo(uiDialogButtonPane);
				});
				uiDialogButtonPane.appendTo(this.uiDialog);
			}
		},

		_makeDraggable: function() {
			var self = this,
			options = this.options,
			heightBeforeDrag;

			this.uiDialog.draggable({
				cancel: '.ui-dialog-content',
				handle: '.ui-dialog-titlebar',
				containment: 'document',
				start: function() {
					heightBeforeDrag = options.height;
					$(this).height($(this).height()).addClass("ui-dialog-dragging");
					(options.dragStart && options.dragStart.apply(self.element[0], arguments));
				},
				drag: function() {
					(options.drag && options.drag.apply(self.element[0], arguments));
				},
				stop: function() {
					$(this).removeClass("ui-dialog-dragging").height(heightBeforeDrag);
					(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',
				alsoResize: this.element,
				maxWidth: options.maxWidth,
				maxHeight: options.maxHeight,
				minWidth: options.minWidth,
				minHeight: options.minHeight,
				start: function() {
					$(this).addClass("ui-dialog-resizing");
					(options.resizeStart && options.resizeStart.apply(self.element[0], arguments));
				},
				resize: function() {
					(options.resize && options.resize.apply(self.element[0], arguments));
				},
				handles: resizeHandles,
				stop: function() {
					$(this).removeClass("ui-dialog-resizing");
					options.height = $(this).height();
					options.width = $(this).width();
					(options.resizeStop && options.resizeStop.apply(self.element[0], arguments));
					$.ui.dialog.overlay.resize();
				}
			})
		.find('.ui-resizable-se').addClass('ui-icon ui-icon-grip-diagonal-se');
		},

		_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':
						pTop += wnd.height() - this.uiDialog.outerHeight();
						break;
					default:
					case 'middle':
						pTop += (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 "dialogClass":
					this.uiDialog
					.removeClass(this.options.dialogClass)
					.addClass(uiDialogClasses + 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 || '&nbsp;');
					break;
				case "width":
					this.uiDialog.width(value);
					break;
			}

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

		_size: function() {
			/* If the user has resized the dialog, the .ui-dialog and .ui-dialog-content
			* divs will both have width and height set, so we need to reset them
			*/
			var options = this.options;

			// reset content sizing
			this.element.css({
				height: 0,
				minHeight: 0,
				width: 'auto'
			});

			// reset wrapper sizing
			// determine the height of all the non-content elements
			var nonContentHeight = this.uiDialog.css({
				height: 'auto',
				width: options.width
			})
			.height();

			this.element
			.css({
				minHeight: Math.max(options.minHeight - nonContentHeight, 0),
				height: options.height == 'auto'
					? 'auto'
					: Math.max(options.height - nonContentHeight, 0)
			});
		}
	});

	$.extend($.ui.dialog, {
		version: "1.7.2",
		defaults: {
			autoOpen: true,
			bgiframe: false,
			buttons: {},
			closeOnEscape: true,
			closeText: 'close',
			dialogClass: '',
			draggable: true,
			hide: null,
			height: 'auto',
			maxHeight: false,
			maxWidth: false,
			minHeight: 150,
			minWidth: 150,
			modal: false,
			position: 'center',
			resizable: true,
			show: null,
			stack: true,
			title: '',
			width: 300,
			zIndex: 1000
		},

		getter: 'isOpen',

		uuid: 0,
		maxZ: 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: [],
		maxZ: 0,
		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() {
					// handle $(el).dialog().dialog('close') (see #4065)
					if ($.ui.dialog.overlay.instances.length) {
						$(document).bind($.ui.dialog.overlay.events, function(event) {
							var dialogZ = $(event.target).parents('.ui-dialog').css('zIndex') || 0;
							return (dialogZ > $.ui.dialog.overlay.maxZ);
						});
					}
				}, 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(event));
				});

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

			var $el = $('<div></div>').appendTo(document.body)
			.addClass('ui-widget-overlay').css({
				width: this.width(),
				height: this.height()
			});

			(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) {
				$([document, window]).unbind('.dialog-overlay');
			}

			$el.remove();

			// adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
			var maxZ = 0;
			$.each(this.instances, function() {
				maxZ = Math.max(maxZ, this.css('z-index'));
			});
			this.maxZ = maxZ;
		},

		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
			);

				if (scrollHeight < offsetHeight) {
					return $(window).height() + 'px';
				} else {
					return scrollHeight + 'px';
				}
				// handle "good" browsers
			} else {
				return $(document).height() + 'px';
			}
		},

		width: function() {
			// handle IE 6
			if ($.browser.msie && $.browser.version < 7) {
				var scrollWidth = Math.max(
				document.documentElement.scrollWidth,
				document.body.scrollWidth
			);
				var offsetWidth = Math.max(
				document.documentElement.offsetWidth,
				document.body.offsetWidth
			);

				if (scrollWidth < offsetWidth) {
					return $(window).width() + 'px';
				} else {
					return scrollWidth + 'px';
				}
				// handle "good" browsers
			} else {
				return $(document).width() + 'px';
			}
		},

		resize: function() {
			/* If the dialog is draggable and the user drags it past the
			* right edge of the window, the document becomes wider so we
			* need to stretch the overlay. If the user then drags the
			* dialog back to the left, the document will become narrower,
			* so we need to shrink the overlay to the appropriate size.
			* This is handled by shrinking the overlay before setting it
			* to the full document size.
			*/
			var $overlays = $([]);
			$.each($.ui.dialog.overlay.instances, function() {
				$overlays = $overlays.add(this);
			});

			$overlays.css({
				width: 0,
				height: 0
			}).css({
				width: $.ui.dialog.overlay.width(),
				height: $.ui.dialog.overlay.height()
			});
		}
	});

	$.extend($.ui.dialog.overlay.prototype, {
		destroy: function() {
			$.ui.dialog.overlay.destroy(this.$el);
		}
	});

})(jQuery);