用Extjs3实现右下角小贴士
代码挺简单,主要是位置设定、新建Ext.WindowGroup并设置zseed、自动关闭处理。
其它就是Ext的继承而已了
Ext.ns('MyLib');/** * 右下角的小贴士窗口 * @author tipx.iteye.com * @params conf 参考Ext.Window * conf中添加autoHide配置项, 默认3秒自动隐藏, 设置自动隐藏的时间(单位:秒), 不需要自动隐藏时设置为false * @注: 使用独立的window管理组(manager:new Ext.WindowGroup()), 达到总是显示在最前的效果 */;(function($) { //新建window组,避免被其它window影响显示在最前的效果 var tipsGroupMgr = new Ext.WindowGroup(); tipsGroupMgr.zseed=99999; //将小贴士窗口前置 $.TipsWindow = Ext.extend(Ext.Window, { width:200, height:150, layout:'fit', modal : false, plain: true, shadow:false, //去除阴影 draggable:false, //默认不可拖拽 resizable:false, closable: true, closeAction:'hide', //默认关闭为隐藏 autoHide:3, //n秒后自动隐藏,为false时,不自动隐藏 manager: tipsGroupMgr, //设置window所属的组 constructor: function(conf){ $.TipsWindow.superclass.constructor.call(this, conf); this.initPosition(true); }, initEvents: function() { $.TipsWindow.superclass.initEvents.call(this); //自动隐藏 if(false !== this.autoHide){ var task = new Ext.util.DelayedTask(this.hide, this), second = (parseInt(this.autoHide) || 3) * 1000; this.on('beforeshow', function(self) { task.delay(second); }); } this.on('beforeshow', this.showTips); this.on('beforehide', this.hideTips); Ext.EventManager.onWindowResize(this.initPosition, this); //window大小改变时,重新设置坐标 Ext.EventManager.on(window, 'scroll', this.initPosition, this); //window移动滚动条时,重新设置坐标 }, //参数: flag - true时强制更新位置 initPosition: function(flag) { if(true !== flag && this.hidden){ //不可见时,不调整坐标 return false; } var doc = document, bd = (doc.body || doc.documentElement); //ext取可视范围宽高(与上面方法取的值相同), 加上滚动坐标 var left = bd.scrollLeft + Ext.lib.Dom.getViewWidth()-4-this.width; var top = bd.scrollTop + Ext.lib.Dom.getViewHeight()-4-this.height; this.setPosition(left, top); }, showTips: function() { var self = this; if(!self.hidden){return false;} self.initPosition(true); //初始化坐标 self.el.slideIn('b', { callback: function() { //显示完成后,手动触发show事件,并将hidden属性设置false,否则将不能触发hide事件 self.fireEvent('show', self); self.hidden = false; } }); return false; //不执行默认的show }, hideTips: function() { var self = this; if(self.hidden){return false;} self.el.slideOut('b', { callback: function() { //渐隐动作执行完成时,手动触发hide事件,并将hidden属性设置true self.fireEvent('hide', self); self.hidden = true; } }); return false; //不执行默认的hide } });})(MyLib);调用:
//其它参数参考Ext.Window的参数设置var tipw = new MyLib.TipsWindow({ title:"小贴士", autoHide:5, //5秒自动关闭 html:"fdasfdsa54f54"});tipw.show();效果:

(function($) {//新建window组,避免被其它window影响显示在最前的效果var tipsGroupMgr = new Ext.WindowGroup();tipsGroupMgr.zseed=99999; //将小贴士窗口前置var hideTask; //隐藏窗口的任务var delaySecond; //延迟隐藏的时间$.TipsWindow = Ext.extend(Ext.Window, {width:200,height:150,layout:'fit',modal : false,plain: true,isHide:true, //隐藏状态shadow:false, //去除阴影draggable:false, //默认不可拖拽resizable:false,closable: true,closeAction:'hide', //默认关闭为隐藏autoHide:3, //n秒后自动隐藏,为false时,不自动隐藏manager: tipsGroupMgr, //设置window所属的组constructor: function(conf){$.TipsWindow.superclass.constructor.call(this, conf);this.initPosition(true);},initEvents: function() {$.TipsWindow.superclass.initEvents.call(this);//自动隐藏if(false !== this.autoHide){hideTask = new Ext.util.DelayedTask(this.hide, this);delaySecond = (parseInt(this.autoHide) || 3) * 1000;this.on('beforeshow', function(self) {hideTask.delay(delaySecond);});this.on('afterrender', this.setDelayHideOnMouseover);}this.on('beforeshow', this.showTips);this.on('beforehide', this.hideTips);Ext.EventManager.onWindowResize(this.initPosition, this); //window大小改变时,重新设置坐标Ext.EventManager.on(window, 'scroll', this.initPosition, this); //window移动滚动条时,重新设置坐标},//参数: flag - true时强制更新位置initPosition: function(flag) {if(true !== flag && this.hidden){ //不可见时,不调整坐标return false;}var doc = document, bd = (doc.body || doc.documentElement);//ext取可视范围宽高(与上面方法取的值相同), 加上滚动坐标var left = bd.scrollLeft + Ext.lib.Dom.getViewWidth()-4-this.width;var top = bd.scrollTop + Ext.lib.Dom.getViewHeight()-30-this.height;this.setPosition(left, top);},showTips: function() {this.isHide=false;var self = this;if(!self.hidden){return false;}self.initPosition(true); //初始化坐标self.el.slideIn('b', {callback: function() {//显示完成后,手动触发show事件,并将hidden属性设置false,否则将不能触发hide事件self.fireEvent('show', self);self.hidden = false;}});return false; //不执行默认的show},hideTips: function() {this.isHide=true;var self = this;if(self.hidden){return false;}self.el.slideOut('b', {callback: function() {//渐隐动作执行完成时,手动触发hide事件,并将hidden属性设置trueself.fireEvent('hide', self);self.hidden = true;}});return false; //不执行默认的hide},setDelayHideOnMouseover:function(_thisWin){_thisWin.mon(_thisWin.el, {mouseover:function(){hideTask.cancel(); //鼠标悬停时不隐藏窗体},mouseout:function(){hideTask.delay(delaySecond);//鼠标移开时开启延时隐藏窗体}});}});})(MyLib)[/size]