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