    /**
     * Layout class for {@link Ext.form.field.TextArea} fields. Handles sizing the textarea field.
     * @private
     */
    Ext.define('Ext.layout.component.field.TextArea', {
        extend: 'Ext.layout.component.field.Text',
        alias: 'layout.textareafield',

        type: 'textareafield',

        canGrowWidth: false,

        naturalSizingProp: 'cols',

        beginLayout: function(ownerContext){
            this.callParent(arguments);
            ownerContext.target.inputEl.setStyle('height', '');
        },

        measureContentHeight: function (ownerContext) {
            var me = this,
                owner = me.owner,
                height = me.callParent(arguments),
                inputContext, inputEl, value, max, curWidth, calcHeight;

            if (owner.grow && !ownerContext.state.growHandled) {
                inputContext = ownerContext.inputContext;
                inputEl = owner.inputEl;
                curWidth = inputEl.getWidth(true); //subtract border/padding to get the available width for the text

                // Get and normalize the field value for measurement
                value = Ext.util.Format.htmlEncode(inputEl.dom.value) || '&#160;';
                value += owner.growAppend;

                // Translate newlines to <br> tags
                value = value.replace(/\n/g, '<br/>');

                // Find the height that contains the whole text value
                calcHeight = Ext.util.TextMetrics.measure(inputEl, value, curWidth).height +
                             inputContext.getBorderInfo().height + inputContext.getPaddingInfo().height;

                // Constrain
                calcHeight = Ext.Number.constrain(calcHeight, owner.growMin, owner.growMax);
                inputContext.setHeight(calcHeight);
                ownerContext.state.growHandled = true;

                // Now that we've set the inputContext, we need to recalculate the width
                inputContext.domBlock(me, 'height');
                height = NaN;
            }
            return height;
        }
    });