+++ /dev/null
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- <title>The source code</title>
- <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
- <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
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- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.3.1
- * Copyright(c) 2006-2010 Sencha Inc.
- * licensing@sencha.com
- * http://www.sencha.com/license
- */
-<div id="cls-Ext.CycleButton"></div>/**
- * @class Ext.CycleButton
- * @extends Ext.SplitButton
- * A specialized SplitButton that contains a menu of {@link Ext.menu.CheckItem} elements. The button automatically
- * cycles through each menu item on click, raising the button's {@link #change} event (or calling the button's
- * {@link #changeHandler} function, if supplied) for the active menu item. Clicking on the arrow section of the
- * button displays the dropdown menu just like a normal SplitButton. Example usage:
- * <pre><code>
-var btn = new Ext.CycleButton({
- showText: true,
- prependText: 'View as ',
- items: [{
- text:'text only',
- iconCls:'view-text',
- checked:true
- },{
- text:'HTML',
- iconCls:'view-html'
- }],
- changeHandler:function(btn, item){
- Ext.Msg.alert('Change View', item.text);
- }
-});
-</code></pre>
- * @constructor
- * Create a new split button
- * @param {Object} config The config object
- * @xtype cycle
- */
-Ext.CycleButton = Ext.extend(Ext.SplitButton, {
- <div id="cfg-Ext.CycleButton-items"></div>/**
- * @cfg {Array} items An array of {@link Ext.menu.CheckItem} <b>config</b> objects to be used when creating the
- * button's menu items (e.g., {text:'Foo', iconCls:'foo-icon'})
- */
- <div id="cfg-Ext.CycleButton-showText"></div>/**
- * @cfg {Boolean} showText True to display the active item's text as the button text (defaults to false)
- */
- <div id="cfg-Ext.CycleButton-prependText"></div>/**
- * @cfg {String} prependText A static string to prepend before the active item's text when displayed as the
- * button's text (only applies when showText = true, defaults to '')
- */
- <div id="cfg-Ext.CycleButton-changeHandler"></div>/**
- * @cfg {Function} changeHandler A callback function that will be invoked each time the active menu
- * item in the button's menu has changed. If this callback is not supplied, the SplitButton will instead
- * fire the {@link #change} event on active item change. The changeHandler function will be called with the
- * following argument list: (SplitButton this, Ext.menu.CheckItem item)
- */
- <div id="cfg-Ext.CycleButton-forceIcon"></div>/**
- * @cfg {String} forceIcon A css class which sets an image to be used as the static icon for this button. This
- * icon will always be displayed regardless of which item is selected in the dropdown list. This overrides the
- * default behavior of changing the button's icon to match the selected item's icon on change.
- */
- <div id="prop-Ext.CycleButton-menu"></div>/**
- * @property menu
- * @type Menu
- * The {@link Ext.menu.Menu Menu} object used to display the {@link Ext.menu.CheckItem CheckItems} representing the available choices.
- */
-
- // private
- getItemText : function(item){
- if(item && this.showText === true){
- var text = '';
- if(this.prependText){
- text += this.prependText;
- }
- text += item.text;
- return text;
- }
- return undefined;
- },
-
- <div id="method-Ext.CycleButton-setActiveItem"></div>/**
- * Sets the button's active menu item.
- * @param {Ext.menu.CheckItem} item The item to activate
- * @param {Boolean} suppressEvent True to prevent the button's change event from firing (defaults to false)
- */
- setActiveItem : function(item, suppressEvent){
- if(!Ext.isObject(item)){
- item = this.menu.getComponent(item);
- }
- if(item){
- if(!this.rendered){
- this.text = this.getItemText(item);
- this.iconCls = item.iconCls;
- }else{
- var t = this.getItemText(item);
- if(t){
- this.setText(t);
- }
- this.setIconClass(item.iconCls);
- }
- this.activeItem = item;
- if(!item.checked){
- item.setChecked(true, false);
- }
- if(this.forceIcon){
- this.setIconClass(this.forceIcon);
- }
- if(!suppressEvent){
- this.fireEvent('change', this, item);
- }
- }
- },
-
- <div id="method-Ext.CycleButton-getActiveItem"></div>/**
- * Gets the currently active menu item.
- * @return {Ext.menu.CheckItem} The active item
- */
- getActiveItem : function(){
- return this.activeItem;
- },
-
- // private
- initComponent : function(){
- this.addEvents(
- <div id="event-Ext.CycleButton-change"></div>/**
- * @event change
- * Fires after the button's active menu item has changed. Note that if a {@link #changeHandler} function
- * is set on this CycleButton, it will be called instead on active item change and this change event will
- * not be fired.
- * @param {Ext.CycleButton} this
- * @param {Ext.menu.CheckItem} item The menu item that was selected
- */
- "change"
- );
-
- if(this.changeHandler){
- this.on('change', this.changeHandler, this.scope||this);
- delete this.changeHandler;
- }
-
- this.itemCount = this.items.length;
-
- this.menu = {cls:'x-cycle-menu', items:[]};
- var checked = 0;
- Ext.each(this.items, function(item, i){
- Ext.apply(item, {
- group: item.group || this.id,
- itemIndex: i,
- checkHandler: this.checkHandler,
- scope: this,
- checked: item.checked || false
- });
- this.menu.items.push(item);
- if(item.checked){
- checked = i;
- }
- }, this);
- Ext.CycleButton.superclass.initComponent.call(this);
- this.on('click', this.toggleSelected, this);
- this.setActiveItem(checked, true);
- },
-
- // private
- checkHandler : function(item, pressed){
- if(pressed){
- this.setActiveItem(item);
- }
- },
-
- <div id="method-Ext.CycleButton-toggleSelected"></div>/**
- * This is normally called internally on button click, but can be called externally to advance the button's
- * active item programmatically to the next one in the menu. If the current item is the last one in the menu
- * the active item will be set to the first item in the menu.
- */
- toggleSelected : function(){
- var m = this.menu;
- m.render();
- // layout if we haven't before so the items are active
- if(!m.hasLayout){
- m.doLayout();
- }
-
- var nextIdx, checkItem;
- for (var i = 1; i < this.itemCount; i++) {
- nextIdx = (this.activeItem.itemIndex + i) % this.itemCount;
- // check the potential item
- checkItem = m.items.itemAt(nextIdx);
- // if its not disabled then check it.
- if (!checkItem.disabled) {
- checkItem.setChecked(true);
- break;
- }
- }
- }
-});
-Ext.reg('cycle', Ext.CycleButton);</pre>
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