// 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 licensed under the GNU General Public License: http://www.gnu.org/licenses/gpl.html
//
(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: 0.50,                // transparency level of overlay
		overlayColor: '#000',               // base color of overlay
		draggable: true,                    // make the dialogs draggable (requires UI Draggables plugin)
		okButton: ' Fechar ',         // 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(type, message, title, callback) {
			if( title == null ) title = 'Alert';
			$.alerts._show(title, message, null, type, 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);
			});
		},
		
		popup: function(message, value, title, callback) {
			if( title == null ) title = 'popup';
			$.alerts._show(title, message, value, 'popup', function(result) {
				if( callback ) callback(result);
			});
		},


		// Private methods
		
		_show: function(title, msg, value, type, callback) {
			
			$.alerts._hide();
			$.alerts._overlay('show');
			
			/*if(window.parent.topo) {
				window.parent.topo.$.alerts._overlay('show');
				window.parent.menu.$.alerts._overlay('show');
				window.parent.rodape.$.alerts._overlay('show');
			}
			
			*/
			
		/*	$("body").append(
				 '<div id="alerts">'
				 +   '<h1 id="popup_title"></h1>'
				 +   '<div id="popup_content"></div>'
				 + '</div>'
			);*/
		
			$("body").append(
				  '<div id="alerts">'
				+ '	<div id="alerts-top-left">'
				+ '		<div id="alerts-top-right">'
				+ '			<div id="alerts-top-center"></div>'
				+ '		</div>'
				+ '	</div>'
				+ '	<div id="alerts-bottom-left">'
				+ '		<div id="alerts-bottom-right">'
				+ '			<div id="alerts-bottom-center">'
				+ '			</div>'
				+ '		</div>'
				+ '	</div>'
				+ '</div>'	
			);
			
			/*if(type != 'popup'){
				$("#popup_content").append('<div id="popup_message"></div>');
			}
			*/
			
			if( $.alerts.dialogClass ) $("#alerts").addClass($.alerts.dialogClass);
			
			// IE6 Fix
			var pos = ($.browser.msie && parseInt($.browser.version) <= 6 ) ? 'absolute' : 'fixed'; 
			
			$("#alerts").css({
				position:pos,
				zIndex:99999,
				padding:0,
				margin:0
			});
			
			//alert(type);
			
			$("#alerts-top-center").text(title);
			$("#alerts-bottom-center").addClass(type);
			$("#alerts-bottom-center").html(msg.replace(/\n/g, '<br />') );
			//$("#alerts-bottom-center").text(msg);
			
			$("#alerts").css({
				minWidth: $("#alerts").outerWidth()
				//maxWidth: $("#alerts").outerWidth()
			});
			
			$.alerts._reposition();
			$.alerts._maintainPosition(true);

			switch (type) {
			    
				case 'info':
			    
				case 'warning':
			    
				case 'success':
				
				case 'error':
					
					$("#alerts-bottom-center").after('<div id="alerts-bottom-footer"><input type="button" value="' + $.alerts.okButton + '" id="alerts-ok" class="alerts-button" /></div>');
					
					$("#alerts-ok").click( function() {
						$.alerts._hide();
						callback(true);
					});
					
					$("#alerts-ok").focus().keypress( function(e) {
						if( e.keyCode == 13 || e.keyCode == 27 ) $("#popup_ok").trigger('click');
					});
					
				break;
				
				case 'confirm':
				
					$("#alerts-bottom-center").after('<div id="alerts-bottom-footer"><input type="button" value="Sim" id="popup_ok" class="alerts-button" /> <input type="button" value="Não" id="popup_cancel" class="alerts-button" /></div>');
					
					$("#popup_ok").click( function() {
						$.alerts._hide();
						if( callback ) callback(true);
					});
					
					$("#popup_cancel").click( function() {
						$.alerts._hide();
						if(callback) callback(false);
					});
					
					$("#popup_cancel").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;
				
				case 'popup':
					
					$("#popup_content").text(msg);
				
				break;
			}
			
			// Make draggable
			if( $.alerts.draggable ) {
				try {
					$("#alerts").draggable({ handle: $("#popup_title") });
					$("#popup_title").css({ cursor: 'move' });
				} catch(e) { /* requires jQuery UI draggables */ }
			}
		},
		
		_hide: function() {
			$("#alerts").remove();
			$.alerts._overlay('hide');
			/*if(window.parent.topo) {
				window.parent.topo.$.alerts._overlay('hide');
				window.parent.menu.$.alerts._overlay('hide');
				window.parent.rodape.$.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: $(window).height() + 'px',
						background: $.alerts.overlayColor,
						opacity: $.alerts.overlayOpacity
					});
				break;
				case 'hide':
					 //$('#popup_overlay').fadeOut('slow', function() {
					   $("#popup_overlay").remove();
					 //});
				break;
			}
		},
		
		_reposition: function() {
			var top = (($(window).height() / 2) - ($("#alerts").outerHeight() / 2)) + $.alerts.verticalOffset;
			var left = (($(window).width() / 2) - ($("#alerts").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();
			
			$("#alerts").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(type, message, title, callback) {
		$.alerts.alert(type, 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);
	};
	
	jPopup = function(message, value, title, callback) {
		$.alerts.popup(message, value, title, callback);
	};

})(jQuery);