SplitButton.js
资源名称:ext-3.0.0.zip [点击查看]
上传用户:shuoshiled
上传日期:2018-01-28
资源大小:10124k
文件大小:4k
源码类别:
中间件编程
开发平台:
JavaScript
- /*! * Ext JS Library 3.0.0 * Copyright(c) 2006-2009 Ext JS, LLC * licensing@extjs.com * http://www.extjs.com/license */ /**
- * @class Ext.SplitButton
- * @extends Ext.Button
- * A split button that provides a built-in dropdown arrow that can fire an event separately from the default
- * click event of the button. Typically this would be used to display a dropdown menu that provides additional
- * options to the primary button action, but any custom handler can provide the arrowclick implementation. Example usage:
- * <pre><code>
- // display a dropdown menu:
- new Ext.SplitButton({
- renderTo: 'button-ct', // the container id
- text: 'Options',
- handler: optionsHandler, // handle a click on the button itself
- menu: new Ext.menu.Menu({
- items: [
- // these items will render as dropdown menu items when the arrow is clicked:
- {text: 'Item 1', handler: item1Handler},
- {text: 'Item 2', handler: item2Handler}
- ]
- })
- });
- // Instead of showing a menu, you provide any type of custom
- // functionality you want when the dropdown arrow is clicked:
- new Ext.SplitButton({
- renderTo: 'button-ct',
- text: 'Options',
- handler: optionsHandler,
- arrowHandler: myCustomHandler
- });
- </code></pre>
- * @cfg {Function} arrowHandler A function called when the arrow button is clicked (can be used instead of click event)
- * @cfg {String} arrowTooltip The title attribute of the arrow
- * @constructor
- * Create a new menu button
- * @param {Object} config The config object
- * @xtype splitbutton
- */
- Ext.SplitButton = Ext.extend(Ext.Button, {
- // private
- arrowSelector : 'em',
- split: true,
- // private
- initComponent : function(){
- Ext.SplitButton.superclass.initComponent.call(this);
- /**
- * @event arrowclick
- * Fires when this button's arrow is clicked
- * @param {MenuButton} this
- * @param {EventObject} e The click event
- */
- this.addEvents("arrowclick");
- },
- // private
- onRender : function(){
- Ext.SplitButton.superclass.onRender.apply(this, arguments);
- if(this.arrowTooltip){
- this.el.child(this.arrowSelector).dom[this.tooltipType] = this.arrowTooltip;
- }
- },
- /**
- * Sets this button's arrow click handler.
- * @param {Function} handler The function to call when the arrow is clicked
- * @param {Object} scope (optional) Scope for the function passed above
- */
- setArrowHandler : function(handler, scope){
- this.arrowHandler = handler;
- this.scope = scope;
- },
- getMenuClass : function(){
- return 'x-btn-split' + (this.arrowAlign == 'bottom' ? '-bottom' : '');
- },
- isClickOnArrow : function(e){
- return this.arrowAlign != 'bottom' ?
- e.getPageX() > this.el.child(this.buttonSelector).getRegion().right :
- e.getPageY() > this.el.child(this.buttonSelector).getRegion().bottom;
- },
- // private
- onClick : function(e, t){
- e.preventDefault();
- if(!this.disabled){
- if(this.isClickOnArrow(e)){
- if(this.menu && !this.menu.isVisible() && !this.ignoreNextClick){
- this.showMenu();
- }
- this.fireEvent("arrowclick", this, e);
- if(this.arrowHandler){
- this.arrowHandler.call(this.scope || this, this, e);
- }
- }else{
- if(this.enableToggle){
- this.toggle();
- }
- this.fireEvent("click", this, e);
- if(this.handler){
- this.handler.call(this.scope || this, this, e);
- }
- }
- }
- },
- // private
- isMenuTriggerOver : function(e){
- return this.menu && e.target.tagName == 'em';
- },
- // private
- isMenuTriggerOut : function(e, internal){
- return this.menu && e.target.tagName != 'em';
- }
- });
- Ext.reg('splitbutton', Ext.SplitButton);