    /**
     * @class Ext.XTemplate
     * @extends Ext.Template
     * <p>A template class that supports advanced functionality like:<div class="mdetail-params"><ul>
     * <li>Autofilling arrays using templates and sub-templates</li>
     * <li>Conditional processing with basic comparison operators</li>
     * <li>Basic math function support</li>
     * <li>Execute arbitrary inline code with special built-in template variables</li>
     * <li>Custom member functions</li>
     * <li>Many special tags and built-in operators that aren't defined as part of
     * the API, but are supported in the templates that can be created</li>
     * </ul></div></p>
     * <p>XTemplate provides the templating mechanism built into:<div class="mdetail-params"><ul>
     * <li>{@link Ext.view.View}</li>
     * </ul></div></p>
     *
     * The {@link Ext.Template} describes
     * the acceptable parameters to pass to the constructor. The following
     * examples demonstrate all of the supported features.</p>
     *
     * <div class="mdetail-params"><ul>
     *
     * <li><b><u>Sample Data</u></b>
     * <div class="sub-desc">
     * <p>This is the data object used for reference in each code example:</p>
     * <pre><code>
    var data = {
    name: 'Tommy Maintz',
    title: 'Lead Developer',
    company: 'Sencha Inc.',
    email: 'tommy@sencha.com',
    address: '5 Cups Drive',
    city: 'Palo Alto',
    state: 'CA',
    zip: '44102',
    drinks: ['Coffee', 'Soda', 'Water'],
    kids: [{
            name: 'Joshua',
            age:3
        },{
            name: 'Matthew',
            age:2
        },{
            name: 'Solomon',
            age:0
    }]
    };
     </code></pre>
     * </div>
     * </li>
     *
     *
     * <li><b><u>Auto filling of arrays</u></b>
     * <div class="sub-desc">
     * <p>The <b><tt>tpl</tt></b> tag and the <b><tt>for</tt></b> operator are used
     * to process the provided data object:
     * <ul>
     * <li>If the value specified in <tt>for</tt> is an array, it will auto-fill,
     * repeating the template block inside the <tt>tpl</tt> tag for each item in the
     * array.</li>
     * <li>If <tt>for="."</tt> is specified, the data object provided is examined.</li>
     * <li>While processing an array, the special variable <tt>{#}</tt>
     * will provide the current array index + 1 (starts at 1, not 0).</li>
     * </ul>
     * </p>
     * <pre><code>
    &lt;tpl <b>for</b>=".">...&lt;/tpl>       // loop through array at root node
    &lt;tpl <b>for</b>="foo">...&lt;/tpl>     // loop through array at foo node
    &lt;tpl <b>for</b>="foo.bar">...&lt;/tpl> // loop through array at foo.bar node
     </code></pre>
     * Using the sample data above:
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>Kids: ',
        '&lt;tpl <b>for</b>=".">',       // process the data.kids node
            '&lt;p>{#}. {name}&lt;/p>',  // use current array index to autonumber
        '&lt;/tpl>&lt;/p>'
    );
    tpl.overwrite(panel.body, data.kids); // pass the kids property of the data object
     </code></pre>
     * <p>An example illustrating how the <b><tt>for</tt></b> property can be leveraged
     * to access specified members of the provided data object to populate the template:</p>
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>Name: {name}&lt;/p>',
        '&lt;p>Title: {title}&lt;/p>',
        '&lt;p>Company: {company}&lt;/p>',
        '&lt;p>Kids: ',
        '&lt;tpl <b>for="kids"</b>>',     // interrogate the kids property within the data
            '&lt;p>{name}&lt;/p>',
        '&lt;/tpl>&lt;/p>'
    );
    tpl.overwrite(panel.body, data);  // pass the root node of the data object
     </code></pre>
     * <p>Flat arrays that contain values (and not objects) can be auto-rendered
     * using the special <b><tt>{.}</tt></b> variable inside a loop.  This variable
     * will represent the value of the array at the current index:</p>
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>{name}\&#39;s favorite beverages:&lt;/p>',
        '&lt;tpl for="drinks">',
            '&lt;div> - {.}&lt;/div>',
        '&lt;/tpl>'
    );
    tpl.overwrite(panel.body, data);
     </code></pre>
     * <p>When processing a sub-template, for example while looping through a child array,
     * you can access the parent object's members via the <b><tt>parent</tt></b> object:</p>
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>Name: {name}&lt;/p>',
        '&lt;p>Kids: ',
        '&lt;tpl for="kids">',
            '&lt;tpl if="age &amp;gt; 1">',
                '&lt;p>{name}&lt;/p>',
                '&lt;p>Dad: {<b>parent</b>.name}&lt;/p>',
            '&lt;/tpl>',
        '&lt;/tpl>&lt;/p>'
    );
    tpl.overwrite(panel.body, data);
     </code></pre>
     * </div>
     * </li>
     *
     *
     * <li><b><u>Conditional processing with basic comparison operators</u></b>
     * <div class="sub-desc">
     * <p>The <b><tt>tpl</tt></b> tag and the <b><tt>if</tt></b> operator are used
     * to provide conditional checks for deciding whether or not to render specific
     * parts of the template. Notes:<div class="sub-desc"><ul>
     * <li>Double quotes must be encoded if used within the conditional</li>
     * <li>There is no <tt>else</tt> operator &mdash; if needed, two opposite
     * <tt>if</tt> statements should be used.</li>
     * </ul></div>
     * <pre><code>
    &lt;tpl if="age &gt; 1 &amp;&amp; age &lt; 10">Child&lt;/tpl>
    &lt;tpl if="age >= 10 && age < 18">Teenager&lt;/tpl>
    &lt;tpl <b>if</b>="this.isGirl(name)">...&lt;/tpl>
    &lt;tpl <b>if</b>="id==\'download\'">...&lt;/tpl>
    &lt;tpl <b>if</b>="needsIcon">&lt;img src="{icon}" class="{iconCls}"/>&lt;/tpl>
    // no good:
    &lt;tpl if="name == "Tommy"">Hello&lt;/tpl>
    // encode &#34; if it is part of the condition, e.g.
    &lt;tpl if="name == &#38;quot;Tommy&#38;quot;">Hello&lt;/tpl>
     * </code></pre>
     * Using the sample data above:
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>Name: {name}&lt;/p>',
        '&lt;p>Kids: ',
        '&lt;tpl for="kids">',
            '&lt;tpl if="age &amp;gt; 1">',
                '&lt;p>{name}&lt;/p>',
            '&lt;/tpl>',
        '&lt;/tpl>&lt;/p>'
    );
    tpl.overwrite(panel.body, data);
     </code></pre>
     * </div>
     * </li>
     *
     *
     * <li><b><u>Basic math support</u></b>
     * <div class="sub-desc">
     * <p>The following basic math operators may be applied directly on numeric
     * data values:</p><pre>
     * + - * /
     * </pre>
     * For example:
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>Name: {name}&lt;/p>',
        '&lt;p>Kids: ',
        '&lt;tpl for="kids">',
            '&lt;tpl if="age &amp;gt; 1">',  // <-- Note that the &gt; is encoded
                '&lt;p>{#}: {name}&lt;/p>',  // <-- Auto-number each item
                '&lt;p>In 5 Years: {age+5}&lt;/p>',  // <-- Basic math
                '&lt;p>Dad: {parent.name}&lt;/p>',
            '&lt;/tpl>',
        '&lt;/tpl>&lt;/p>'
    );
    tpl.overwrite(panel.body, data);
     </code></pre>
     * </div>
     * </li>
     *
     *
     * <li><b><u>Execute arbitrary inline code with special built-in template variables</u></b>
     * <div class="sub-desc">
     * <p>Anything between <code>{[ ... ]}</code> is considered code to be executed
     * in the scope of the template. There are some special variables available in that code:
     * <ul>
     * <li><b><tt>values</tt></b>: The values in the current scope. If you are using
     * scope changing sub-templates, you can change what <tt>values</tt> is.</li>
     * <li><b><tt>parent</tt></b>: The scope (values) of the ancestor template.</li>
     * <li><b><tt>xindex</tt></b>: If you are in a looping template, the index of the
     * loop you are in (1-based).</li>
     * <li><b><tt>xcount</tt></b>: If you are in a looping template, the total length
     * of the array you are looping.</li>
     * </ul>
     * This example demonstrates basic row striping using an inline code block and the
     * <tt>xindex</tt> variable:</p>
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>Name: {name}&lt;/p>',
        '&lt;p>Company: {[values.company.toUpperCase() + ", " + values.title]}&lt;/p>',
        '&lt;p>Kids: ',
        '&lt;tpl for="kids">',
            '&lt;div class="{[xindex % 2 === 0 ? "even" : "odd"]}">',
            '{name}',
            '&lt;/div>',
        '&lt;/tpl>&lt;/p>'
     );
    tpl.overwrite(panel.body, data);
     </code></pre>
     * </div>
     * </li>
     *
     * <li><b><u>Template member functions</u></b>
     * <div class="sub-desc">
     * <p>One or more member functions can be specified in a configuration
     * object passed into the XTemplate constructor for more complex processing:</p>
     * <pre><code>
    var tpl = new Ext.XTemplate(
        '&lt;p>Name: {name}&lt;/p>',
        '&lt;p>Kids: ',
        '&lt;tpl for="kids">',
            '&lt;tpl if="this.isGirl(name)">',
                '&lt;p>Girl: {name} - {age}&lt;/p>',
            '&lt;/tpl>',
             // use opposite if statement to simulate 'else' processing:
            '&lt;tpl if="this.isGirl(name) == false">',
                '&lt;p>Boy: {name} - {age}&lt;/p>',
            '&lt;/tpl>',
            '&lt;tpl if="this.isBaby(age)">',
                '&lt;p>{name} is a baby!&lt;/p>',
            '&lt;/tpl>',
        '&lt;/tpl>&lt;/p>',
        {
            // XTemplate configuration:
            compiled: true,
            // member functions:
            isGirl: function(name){
               return name == 'Sara Grace';
            },
            isBaby: function(age){
               return age < 1;
            }
        }
    );
    tpl.overwrite(panel.body, data);
     </code></pre>
     * </div>
     * </li>
     *
     * </ul></div>
     *
     * @param {Mixed} config
     */

    Ext.define('Ext.XTemplate', {

        /* Begin Definitions */

        extend: 'Ext.Template',

        statics: {
            /**
             * Creates a template from the passed element's value (<i>display:none</i> textarea, preferred) or innerHTML.
             * @param {String/HTMLElement} el A DOM element or its id
             * @return {Ext.Template} The created template
             * @static
             */
            from: function(el, config) {
                el = Ext.getDom(el);
                return new this(el.value || el.innerHTML, config || {});
            }
        },

        /* End Definitions */

        argsRe: /<tpl\b[^>]*>((?:(?=([^<]+))\2|<(?!tpl\b[^>]*>))*?)<\/tpl>/,
        nameRe: /^<tpl\b[^>]*?for="(.*?)"/,
        ifRe: /^<tpl\b[^>]*?if="(.*?)"/,
        execRe: /^<tpl\b[^>]*?exec="(.*?)"/,
        constructor: function() {
            this.callParent(arguments);

            var me = this,
                html = me.html,
                argsRe = me.argsRe,
                nameRe = me.nameRe,
                ifRe = me.ifRe,
                execRe = me.execRe,
                id = 0,
                tpls = [],
                VALUES = 'values',
                PARENT = 'parent',
                XINDEX = 'xindex',
                XCOUNT = 'xcount',
                RETURN = 'return ',
                WITHVALUES = 'with(values){ ',
                m, matchName, matchIf, matchExec, exp, fn, exec, name, i;

            html = ['<tpl>', html, '</tpl>'].join('');

            while ((m = html.match(argsRe))) {
                exp = null;
                fn = null;
                exec = null;
                matchName = m[0].match(nameRe);
                matchIf = m[0].match(ifRe);
                matchExec = m[0].match(execRe);

                exp = matchIf ? matchIf[1] : null;
                if (exp) {
                    fn = Ext.functionFactory(VALUES, PARENT, XINDEX, XCOUNT, WITHVALUES + 'try{' + RETURN + Ext.String.htmlDecode(exp) + ';}catch(e){return;}}');
                }

                exp = matchExec ? matchExec[1] : null;
                if (exp) {
                    exec = Ext.functionFactory(VALUES, PARENT, XINDEX, XCOUNT, WITHVALUES + Ext.String.htmlDecode(exp) + ';}');
                }

                name = matchName ? matchName[1] : null;
                if (name) {
                    if (name === '.') {
                        name = VALUES;
                    } else if (name === '..') {
                        name = PARENT;
                    }
                    name = Ext.functionFactory(VALUES, PARENT, 'try{' + WITHVALUES + RETURN + name + ';}}catch(e){return;}');
                }

                tpls.push({
                    id: id,
                    target: name,
                    exec: exec,
                    test: fn,
                    body: m[1] || ''
                });

                html = html.replace(m[0], '{xtpl' + id + '}');
                id = id + 1;
            }

            for (i = tpls.length - 1; i >= 0; --i) {
                me.compileTpl(tpls[i]);
            }
            me.master = tpls[tpls.length - 1];
            me.tpls = tpls;
        },

        // @private
        applySubTemplate: function(id, values, parent, xindex, xcount) {
            var me = this, t = me.tpls[id];
            return t.compiled.call(me, values, parent, xindex, xcount);
        },
        /**
         * @cfg {RegExp} codeRe The regular expression used to match code variables (default: matches <tt>{[expression]}</tt>).
         */
        codeRe: /\{\[((?:\\\]|.|\n)*?)\]\}/g,

        re: /\{([\w-\.\#]+)(?:\:([\w\.]*)(?:\((.*?)?\))?)?(\s?[\+\-\*\/]\s?[\d\.\+\-\*\/\(\)]+)?\}/g,

        // @private
        compileTpl: function(tpl) {
            var fm = Ext.util.Format,
                me = this,
                useFormat = me.disableFormats !== true,
                body, bodyReturn, evaluatedFn;

            function fn(m, name, format, args, math) {
                var v;
                // name is what is inside the {}
                // Name begins with xtpl, use a Sub Template
                if (name.substr(0, 4) == 'xtpl') {
                    return "',this.applySubTemplate(" + name.substr(4) + ", values, parent, xindex, xcount),'";
                }
                // name = "." - Just use the values object.
                if (name == '.') {
                    // filter to not include arrays/objects/nulls
                    v = 'Ext.Array.indexOf(["string", "number", "boolean"], typeof values) > -1 || Ext.isDate(values) ? values : ""';
                }

                // name = "#" - Use the xindex
                else if (name == '#') {
                    v = 'xindex';
                }
                else if (name.substr(0, 7) == "parent.") {
                    v = name;
                }
                // name has a . in it - Use object literal notation, starting from values
                else if (name.indexOf('.') != -1) {
                    v = "values." + name;
                }

                // name is a property of values
                else {
                    v = "values['" + name + "']";
                }
                if (math) {
                    v = '(' + v + math + ')';
                }
                if (format && useFormat) {
                    args = args ? ',' + args : "";
                    if (format.substr(0, 5) != "this.") {
                        format = "fm." + format + '(';
                    }
                    else {
                        format = 'this.' + format.substr(5) + '(';
                    }
                }
                else {
                    args = '';
                    format = "(" + v + " === undefined ? '' : ";
                }
                return "'," + format + v + args + "),'";
            }

            function codeFn(m, code) {
                // Single quotes get escaped when the template is compiled, however we want to undo this when running code.
                return "',(" + code.replace(me.compileARe, "'") + "),'";
            }

            bodyReturn = tpl.body.replace(me.compileBRe, '\\n').replace(me.compileCRe, "\\'").replace(me.re, fn).replace(me.codeRe, codeFn);
            body = "evaluatedFn = function(values, parent, xindex, xcount){return ['" + bodyReturn + "'].join('');};";
            eval(body);

            tpl.compiled = function(values, parent, xindex, xcount) {
                var vs,
                    length,
                    buffer,
                    i;

                if (tpl.test && !tpl.test.call(me, values, parent, xindex, xcount)) {
                    return '';
                }

                vs = tpl.target ? tpl.target.call(me, values, parent) : values;
                if (!vs) {
                   return '';
                }

                parent = tpl.target ? values : parent;
                if (tpl.target && Ext.isArray(vs)) {
                    buffer = [];
                    length = vs.length;
                    if (tpl.exec) {
                        for (i = 0; i < length; i++) {
                            buffer[buffer.length] = evaluatedFn.call(me, vs[i], parent, i + 1, length);
                            tpl.exec.call(me, vs[i], parent, i + 1, length);
                        }
                    } else {
                        for (i = 0; i < length; i++) {
                            buffer[buffer.length] = evaluatedFn.call(me, vs[i], parent, i + 1, length);
                        }
                    }
                    return buffer.join('');
                }

                if (tpl.exec) {
                    tpl.exec.call(me, vs, parent, xindex, xcount);
                }
                return evaluatedFn.call(me, vs, parent, xindex, xcount);
            };

            return this;
        },

        /**
         * Returns an HTML fragment of this template with the specified values applied.
         * @param {Object} values The template values. Can be an array if your params are numeric (i.e. {0}) or an object (i.e. {foo: 'bar'})
         * @return {String} The HTML fragment
         */
        applyTemplate: function(values) {
            return this.master.compiled.call(this, values, {}, 1, 1);
        },

        /**
         * Compile the template to a function for optimized performance.  Recommended if the template will be used frequently.
         * @return {Function} The compiled function
         */
        compile: function() {
            return this;
        }
    }, function() {
        /**
         * Alias for {@link #applyTemplate}
         * Returns an HTML fragment of this template with the specified values applied.
         * @param {Object/Array} values The template values. Can be an array if your params are numeric (i.e. {0}) or an object (i.e. {foo: 'bar'})
         * @return {String} The HTML fragment
         * @member Ext.XTemplate
         * @method apply
         */
        this.createAlias('apply', 'applyTemplate');
    });