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<html>
<head>
<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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<body onload="prettyPrint();">
<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.0.3
* Copyright(c) 2006-2009 Ext JS, LLC
* licensing@extjs.com
* http://www.extjs.com/license
*/
<div id="cls-Ext.form.TextArea"></div>/**
* @class Ext.form.TextArea
* @extends Ext.form.TextField
* Multiline text field. Can be used as a direct replacement for traditional textarea fields, plus adds
* support for auto-sizing.
* @constructor
* Creates a new TextArea
* @param {Object} config Configuration options
* @xtype textarea
*/
Ext.form.TextArea = Ext.extend(Ext.form.TextField, {
<div id="cfg-Ext.form.TextArea-growMin"></div>/**
* @cfg {Number} growMin The minimum height to allow when <tt>{@link Ext.form.TextField#grow grow}=true</tt>
* (defaults to <tt>60</tt>)
*/
growMin : 60,
<div id="cfg-Ext.form.TextArea-growMax"></div>/**
* @cfg {Number} growMax The maximum height to allow when <tt>{@link Ext.form.TextField#grow grow}=true</tt>
* (defaults to <tt>1000</tt>)
*/
growMax: 1000,
growAppend : ' \n ',
growPad : Ext.isWebKit ? -6 : 0,
enterIsSpecial : false,
<div id="cfg-Ext.form.TextArea-preventScrollbars"></div>/**
* @cfg {Boolean} preventScrollbars <tt>true</tt> to prevent scrollbars from appearing regardless of how much text is
* in the field. This option is only relevant when {@link #grow} is <tt>true</tt>. Equivalent to setting overflow: hidden, defaults to
* <tt>false</tt>.
*/
preventScrollbars: false,
<div id="cfg-Ext.form.TextArea-autoCreate"></div>/**
* @cfg {String/Object} autoCreate <p>A {@link Ext.DomHelper DomHelper} element spec, or true for a default
* element spec. Used to create the {@link Ext.Component#getEl Element} which will encapsulate this Component.
* See <tt>{@link Ext.Component#autoEl autoEl}</tt> for details. Defaults to:</p>
* <pre><code>{tag: "textarea", style: "width:100px;height:60px;", autocomplete: "off"}</code></pre>
*/
// private
onRender : function(ct, position){
if(!this.el){
this.defaultAutoCreate = {
tag: "textarea",
style:"width:100px;height:60px;",
autocomplete: "off"
};
}
Ext.form.TextArea.superclass.onRender.call(this, ct, position);
if(this.grow){
this.textSizeEl = Ext.DomHelper.append(document.body, {
tag: "pre", cls: "x-form-grow-sizer"
});
if(this.preventScrollbars){
this.el.setStyle("overflow", "hidden");
}
this.el.setHeight(this.growMin);
}
},
onDestroy : function(){
Ext.destroy(this.textSizeEl);
Ext.form.TextArea.superclass.onDestroy.call(this);
},
fireKey : function(e){
if(e.isSpecialKey() && (this.enterIsSpecial || (e.getKey() != e.ENTER || e.hasModifier()))){
this.fireEvent("specialkey", this, e);
}
},
// private
onKeyUp : function(e){
if(!e.isNavKeyPress() || e.getKey() == e.ENTER){
this.autoSize();
}
Ext.form.TextArea.superclass.onKeyUp.call(this, e);
},
<div id="method-Ext.form.TextArea-autoSize"></div>/**
* Automatically grows the field to accomodate the height of the text up to the maximum field height allowed.
* This only takes effect if grow = true, and fires the {@link #autosize} event if the height changes.
*/
autoSize: function(){
if(!this.grow || !this.textSizeEl){
return;
}
var el = this.el;
var v = el.dom.value;
var ts = this.textSizeEl;
ts.innerHTML = '';
ts.appendChild(document.createTextNode(v));
v = ts.innerHTML;
Ext.fly(ts).setWidth(this.el.getWidth());
if(v.length < 1){
v = "  ";
}else{
v += this.growAppend;
if(Ext.isIE){
v = v.replace(/\n/g, '<br />');
}
}
ts.innerHTML = v;
var h = Math.min(this.growMax, Math.max(ts.offsetHeight, this.growMin) + this.growPad);
if(h != this.lastHeight){
this.lastHeight = h;
this.el.setHeight(h);
this.fireEvent("autosize", this, h);
}
}
});
Ext.reg('textarea', Ext.form.TextArea);</pre>
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