// jQuery Alert Dialogs Plugin

//

// Version 1.0

//

// Cory S.N. LaViska

// A Beautiful Site (http://abeautifulsite.net/)

// 29 December 2008

//

// Visit http://abeautifulsite.net/notebook/87 for more information

//

// Usage:

//		jAlert( message, [title, callback] )

//		jConfirm( message, [title, callback] )

//		jPrompt( message, [value, title, callback] )

// 

// History:

//

//		1.00 - Released (29 December 2008)

//

// License:

// 

// This plugin is dual-licensed under the GNU General Public License and the MIT License and

// is copyright 2008 A Beautiful Site, LLC. 

//

(function($) {

	

	$.alerts = {

		

		// These properties can be read/written by accessing $.alerts.propertyName from your scripts at any time

		

		verticalOffset: -75,                // vertical offset of the dialog from center screen, in pixels

		horizontalOffset: 0,                // horizontal offset of the dialog from center screen, in pixels/

		repositionOnResize: true,           // re-centers the dialog on window resize

		overlayOpacity: .01,                // transparency level of overlay

		overlayColor: '#FFF',               // base color of overlay

		draggable: true,                    // make the dialogs draggable (requires UI Draggables plugin)

		okButton: ' OK ',         // text for the OK button

		cancelButton: ' Cancel ', // text for the Cancel button

		dialogClass: null,                  // if specified, this class will be applied to all dialogs

		

		// Public methods

		

		alert: function(message, title, callback) {

			if( title == null ) title = 'Alert';

			$.alerts._show(title, message, null, 'alert', function(result) {

				if( callback ) callback(result);

			});

		},

		

		confirm: function(message, title, callback) {

			if( title == null ) title = 'Confirm';

			$.alerts._show(title, message, null, 'confirm', function(result) {

				if( callback ) callback(result);

			});

		},

			

		prompt: function(message, value, title, callback) {

			if( title == null ) title = 'Prompt';

			$.alerts._show(title, message, value, 'prompt', function(result) {

				if( callback ) callback(result);

			});

		},

		

		// Private methods

		

		_show: function(title, msg, value, type, callback) {

			

			$.alerts._hide();

			$.alerts._overlay('show');

			

			$("BODY").append(

			  '<div id="popup_container">' +

			    '<h1 id="popup_title"></h1>' +

			    '<div id="popup_content">' +

			      '<div id="popup_message"></div>' +

				'</div>' +

			  '</div>');

			

			if( $.alerts.dialogClass ) $("#popup_container").addClass($.alerts.dialogClass);

			

			// IE6 Fix

			var pos = ($.browser.msie && parseInt($.browser.version) <= 6 ) ? 'absolute' : 'fixed'; 

			

			$("#popup_container").css({

				position: pos,

				zIndex: 99999,

				padding: 0,

				margin: 0

			});

			

			$("#popup_title").text(title);

			$("#popup_content").addClass(type);

			$("#popup_message").text(msg);

			$("#popup_message").html( $("#popup_message").text().replace(/\n/g, '<br />') );

			

			$("#popup_container").css({

				minWidth: $("#popup_container").outerWidth(),

				maxWidth: $("#popup_container").outerWidth()

			});

			

			$.alerts._reposition();

			$.alerts._maintainPosition(true);

			

			switch( type ) {

				case 'alert':

					$("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" /></div>');

					$("#popup_ok").click( function() {

						$.alerts._hide();

						callback(true);

					});

					$("#popup_ok").focus().keypress( function(e) {

						if( e.keyCode == 13 || e.keyCode == 27 ) $("#popup_ok").trigger('click');

					});

				break;

				case 'confirm':

					$("#popup_message").after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" /> <input type="button" value="' + $.alerts.cancelButton + '" id="popup_cancel" /></div>');

					$("#popup_ok").click( function() {

						$.alerts._hide();

						if( callback ) callback(true);

					});

					$("#popup_cancel").click( function() {

						$.alerts._hide();

						if( callback ) callback(false);

					});

					$("#popup_ok").focus();

					$("#popup_ok, #popup_cancel").keypress( function(e) {

						if( e.keyCode == 13 ) $("#popup_ok").trigger('click');

						if( e.keyCode == 27 ) $("#popup_cancel").trigger('click');

					});

				break;

				case 'prompt':

					$("#popup_message").append('<br /><input type="text" size="30" id="popup_prompt" />').after('<div id="popup_panel"><input type="button" value="' + $.alerts.okButton + '" id="popup_ok" /> <input type="button" value="' + $.alerts.cancelButton + '" id="popup_cancel" /></div>');

					$("#popup_prompt").width( $("#popup_message").width() );

					$("#popup_ok").click( function() {

						var val = $("#popup_prompt").val();

						$.alerts._hide();

						if( callback ) callback( val );

					});

					$("#popup_cancel").click( function() {

						$.alerts._hide();

						if( callback ) callback( null );

					});

					$("#popup_prompt, #popup_ok, #popup_cancel").keypress( function(e) {

						if( e.keyCode == 13 ) $("#popup_ok").trigger('click');

						if( e.keyCode == 27 ) $("#popup_cancel").trigger('click');

					});

					if( value ) $("#popup_prompt").val(value);

					$("#popup_prompt").focus().select();

				break;

			}

			

			// Make draggable

			if( $.alerts.draggable ) {

				try {

					$("#popup_container").draggable({ handle: $("#popup_title") });

					$("#popup_title").css({ cursor: 'move' });

				} catch(e) { /* requires jQuery UI draggables */ }

			}

		},

		

		_hide: function() {

			$("#popup_container").remove();

			$.alerts._overlay('hide');

			$.alerts._maintainPosition(false);

		},

		

		_overlay: function(status) {

			switch( status ) {

				case 'show':

					$.alerts._overlay('hide');

					$("BODY").append('<div id="popup_overlay"></div>');

					$("#popup_overlay").css({

						position: 'absolute',

						zIndex: 99998,

						top: '0px',

						left: '0px',

						width: '100%',

						height: $(document).height(),

						background: $.alerts.overlayColor,

						opacity: $.alerts.overlayOpacity

					});

				break;

				case 'hide':

					$("#popup_overlay").remove();

				break;

			}

		},

		

		_reposition: function() {

			var top = (($(window).height() / 2) - ($("#popup_container").outerHeight() / 2)) + $.alerts.verticalOffset;

			var left = (($(window).width() / 2) - ($("#popup_container").outerWidth() / 2)) + $.alerts.horizontalOffset;

			if( top < 0 ) top = 0;

			if( left < 0 ) left = 0;

			

			// IE6 fix

			if( $.browser.msie && parseInt($.browser.version) <= 6 ) top = top + $(window).scrollTop();

			

			$("#popup_container").css({

				top: top + 'px',

				left: left + 'px'

			});

			$("#popup_overlay").height( $(document).height() );

		},

		

		_maintainPosition: function(status) {

			if( $.alerts.repositionOnResize ) {

				switch(status) {

					case true:

						$(window).bind('resize', function() {

							$.alerts._reposition();

						});

					break;

					case false:

						$(window).unbind('resize');

					break;

				}

			}

		}

		

	}

	

	// Shortuct functions

	jAlert = function(message, title, callback) {

		$.alerts.alert(message, title, callback);

	}

	

	jConfirm = function(message, title, callback) {

		$.alerts.confirm(message, title, callback);

	};

		

	jPrompt = function(message, value, title, callback) {

		$.alerts.prompt(message, value, title, callback);

	};

	

})(jQuery);