    /**
     * @private
     * @class Ext.layout.component.field.Text
     * @extends Ext.layout.component.field.Field
     * Layout class for {@link Ext.form.field.Text} fields. Handles sizing the input field.
     */
    Ext.define('Ext.layout.component.field.Text', {
        extend: 'Ext.layout.component.field.Field',
        alias: 'layout.textfield',
        requires: ['Ext.util.TextMetrics'],

        type: 'textfield',

        /**
         * Allow layout to proceed if the {@link Ext.form.field.Text#grow} config is enabled and the value has
         * changed since the last layout.
         */
        beforeLayout: function(width, height) {
            var me = this,
                owner = me.owner,
                lastValue = this.lastValue,
                value = owner.getRawValue();
            this.lastValue = value;
            return me.callParent(arguments) || (owner.grow && value !== lastValue);
        },

        /**
         * Size the field body contents given the total dimensions of the bodyEl, taking into account the optional
         * {@link Ext.form.field.Text#grow} configurations.
         * @param {Number} width The bodyEl width
         * @param {Number} height The bodyEl height
         */
        sizeBodyContents: function(width, height) {
            var size = this.adjustForGrow(width, height);
            this.setElementSize(this.owner.inputEl, size[0], size[1]);
        },

        /**
         * Given the target bodyEl dimensions, adjust them if necessary to return the correct final
         * size based on the text field's {@link Ext.form.field.Text#grow grow config}.
         * @param {Number} width The bodyEl width
         * @param {Number} height The bodyEl height
         * @return {Array} [inputElWidth, inputElHeight]
         */
        adjustForGrow: function(width, height) {
            var me = this,
                owner = me.owner,
                inputEl, value, calcWidth,
                result = [width, height];

            if (owner.grow) {
                inputEl = owner.inputEl;

                // Find the width that contains the whole text value
                value = (inputEl.dom.value || (owner.hasFocus ? '' : owner.emptyText) || '') + owner.growAppend;
                calcWidth = inputEl.getTextWidth(value) + inputEl.getBorderWidth("lr") + inputEl.getPadding("lr");

                // Constrain
                result[0] = Ext.Number.constrain(calcWidth, owner.growMin,
                        Math.max(owner.growMin, Math.min(owner.growMax, Ext.isNumber(width) ? width : Infinity)));
            }

            return result;
        }

    });