Ticket #2999: ui.dialog.js.patch

--- a/ui.dialog.js
+++ b/ui.dialog.js
@@ -47,9 +47,11 @@ $.widget("ui.dialog", {
 			title = options.title || uiDialogContent.attr('title') || '',
 			uiDialogTitlebar = (this.uiDialogTitlebar =
 				$('
'))
-				.append('' + title + '')
-				.append('X')
-				.prependTo(uiDialogContainer),
+				.append('' + title + '');
+			if (options.maximizable)
+                uiDialogTitlebar.append('+');
+			uiDialogTitlebar.append('X')
+				.prependTo(uiDialogContainer);
 			
 			uiDialog = (this.uiDialog = uiDialogContainer.parent())
 				.appendTo(document.body)
@@ -95,6 +97,23 @@ $.widget("ui.dialog", {
 				self.close();
 				return false;
 			});
+		if (options.maximizable){
+		    this.uiDialogTitlebarMaximize = $('.ui-dialog-titlebar-maximize', uiDialogTitlebar)
+		    .hover(
+		        function() {
+		            $(this).addClass('ui-dialog-titlebar-maximize-hover');
+		        },
+		        function() {
+                    $(this).removeClass('ui-dialog-titlebar-maximize-hover');
+		        }
+		    )
+		    .mousedown(function(ev){ ev.stopPropagation(); })
+		    .click(function() {
+		        self.toggleMaximize();
+		        return false;
+		    });
+		}
+			
 		
 		var hasButtons = false;
 		$.each(options.buttons, function() { return !(hasButtons = true); });
@@ -266,6 +285,49 @@ $.widget("ui.dialog", {
 		$.ui.dialog.overlay.resize();
 	},
 	
+	toggleMaximize: function(){
+	    this.maximized ? this.unMaximize() : this.maximize();
+	},
+	
+	maximize: function(){
+	    var self = this;
+        this.uiDialog.addClass('maximized');
+	    this.preMaximize = {
+	        top: this.uiDialog.css('top'),
+	        left: this.uiDialog.css('left'),
+	        width: this.uiDialog.width(),
+	        height: this.uiDialog.height()
+	    };
+	    $.each(['margin-left', 'margin-right', 'margin-top', 'margin-bottom', 'margin',
+	            'padding-left', 'padding-right', 'padding-top', 'padding-bottom', 'padding'], function(i, attr){
+            self.preMaximize[attr] = self.uiDialog.css(attr);
+            self.uiDialog.css(attr, 0);
+	    });
+        this.position(['left', 'top']);
+        var wnd = $(window);
+        this.uiDialog.width(wnd.width()).height(wnd.height())
+            .resizable('disable').draggable('disable');
+        $.ui.dialog.overlay.resize();
+        this.uiDialog.trigger('resize');
+        this.maximized = true;
+	},
+	
+	unMaximize: function(){
+	    var self = this;
+        this.uiDialog.removeClass('maximized');
+	    this.uiDialog.width(this.preMaximize.width).height(this.preMaximize.height);
+        this.position([this.preMaximize.left, this.preMaximize.top]);
+        $.each(['margin-left', 'margin-right', 'margin-top', 'margin-bottom', 'margin',
+	            'padding-left', 'padding-right', 'padding-top', 'padding-bottom', 'padding'], function(i, attr){
+            self.uiDialog.css(attr, self.preMaximize[attr]);
+	    });
+        (this.options.resizable && this.uiDialog.resizable('enable'));
+        (this.options.draggable && this.uiDialog.draggable('enable'));
+        $.ui.dialog.overlay.resize();
+        this.uiDialog.trigger('resize');
+        this.maximized = false;
+	},
+	
 	destroy: function() {
 		(this.overlay && this.overlay.destroy());
 		this.uiDialog.hide();