X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/0494b8d9b9bb03ab6c22b34dae81261e3cd7e3e6..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/src/Template.js diff --git a/src/Template.js b/src/Template.js new file mode 100644 index 00000000..5fea2a05 --- /dev/null +++ b/src/Template.js @@ -0,0 +1,283 @@ +/** + * @class Ext.Template + *

Represents an HTML fragment template. Templates may be {@link #compile precompiled} + * for greater performance.

+ * An instance of this class may be created by passing to the constructor either + * a single argument, or multiple arguments: + *
+ * @param {Mixed} config + */ + +Ext.define('Ext.Template', { + + /* Begin Definitions */ + + requires: ['Ext.core.DomHelper', 'Ext.util.Format'], + + statics: { + /** + * Creates a template from the passed element's value (display:none textarea, preferred) or innerHTML. + * @param {String/HTMLElement} el A DOM element or its id + * @param {Object} config A configuration object + * @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 */ + + constructor: function(html) { + var me = this, + args = arguments, + buffer = [], + i = 0, + length = args.length, + value; + + me.initialConfig = {}; + + if (length > 1) { + for (; i < length; i++) { + value = args[i]; + if (typeof value == 'object') { + Ext.apply(me.initialConfig, value); + Ext.apply(me, value); + } else { + buffer.push(value); + } + } + html = buffer.join(''); + } else { + if (Ext.isArray(html)) { + buffer.push(html.join('')); + } else { + buffer.push(html); + } + } + + // @private + me.html = buffer.join(''); + + if (me.compiled) { + me.compile(); + } + }, + isTemplate: true, + /** + * @cfg {Boolean} disableFormats true to disable format functions in the template. If the template doesn't contain format functions, setting + * disableFormats to true will reduce apply time (defaults to false) + */ + disableFormats: false, + + re: /\{([\w\-]+)(?:\:([\w\.]*)(?:\((.*?)?\))?)?\}/g, + /** + * 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 + * @hide repeat doc + */ + applyTemplate: function(values) { + var me = this, + useFormat = me.disableFormats !== true, + fm = Ext.util.Format, + tpl = me; + + if (me.compiled) { + return me.compiled(values); + } + function fn(m, name, format, args) { + if (format && useFormat) { + if (args) { + args = [values[name]].concat(Ext.functionFactory('return ['+ args +'];')()); + } else { + args = [values[name]]; + } + if (format.substr(0, 5) == "this.") { + return tpl[format.substr(5)].apply(tpl, args); + } + else { + return fm[format].apply(fm, args); + } + } + else { + return values[name] !== undefined ? values[name] : ""; + } + } + return me.html.replace(me.re, fn); + }, + + /** + * Sets the HTML used as the template and optionally compiles it. + * @param {String} html + * @param {Boolean} compile (optional) True to compile the template (defaults to undefined) + * @return {Ext.Template} this + */ + set: function(html, compile) { + var me = this; + me.html = html; + me.compiled = null; + return compile ? me.compile() : me; + }, + + compileARe: /\\/g, + compileBRe: /(\r\n|\n)/g, + compileCRe: /'/g, + /** + * Compiles the template into an internal function, eliminating the RegEx overhead. + * @return {Ext.Template} this + * @hide repeat doc + */ + compile: function() { + var me = this, + fm = Ext.util.Format, + useFormat = me.disableFormats !== true, + body, bodyReturn; + + function fn(m, name, format, args) { + if (format && useFormat) { + args = args ? ',' + args: ""; + if (format.substr(0, 5) != "this.") { + format = "fm." + format + '('; + } + else { + format = 'this.' + format.substr(5) + '('; + } + } + else { + args = ''; + format = "(values['" + name + "'] == undefined ? '' : "; + } + return "'," + format + "values['" + name + "']" + args + ") ,'"; + } + + bodyReturn = me.html.replace(me.compileARe, '\\\\').replace(me.compileBRe, '\\n').replace(me.compileCRe, "\\'").replace(me.re, fn); + body = "this.compiled = function(values){ return ['" + bodyReturn + "'].join('');};"; + eval(body); + return me; + }, + + /** + * Applies the supplied values to the template and inserts the new node(s) as the first child of el. + * @param {Mixed} el The context element + * @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'}) + * @param {Boolean} returnElement (optional) true to return a Ext.core.Element (defaults to undefined) + * @return {HTMLElement/Ext.core.Element} The new node or Element + */ + insertFirst: function(el, values, returnElement) { + return this.doInsert('afterBegin', el, values, returnElement); + }, + + /** + * Applies the supplied values to the template and inserts the new node(s) before el. + * @param {Mixed} el The context element + * @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'}) + * @param {Boolean} returnElement (optional) true to return a Ext.core.Element (defaults to undefined) + * @return {HTMLElement/Ext.core.Element} The new node or Element + */ + insertBefore: function(el, values, returnElement) { + return this.doInsert('beforeBegin', el, values, returnElement); + }, + + /** + * Applies the supplied values to the template and inserts the new node(s) after el. + * @param {Mixed} el The context element + * @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'}) + * @param {Boolean} returnElement (optional) true to return a Ext.core.Element (defaults to undefined) + * @return {HTMLElement/Ext.core.Element} The new node or Element + */ + insertAfter: function(el, values, returnElement) { + return this.doInsert('afterEnd', el, values, returnElement); + }, + + /** + * Applies the supplied values to the template and appends + * the new node(s) to the specified el. + *

For example usage {@link #Template see the constructor}.

+ * @param {Mixed} el The context element + * @param {Object/Array} values + * The template values. Can be an array if the params are numeric (i.e. {0}) + * or an object (i.e. {foo: 'bar'}). + * @param {Boolean} returnElement (optional) true to return an Ext.core.Element (defaults to undefined) + * @return {HTMLElement/Ext.core.Element} The new node or Element + */ + append: function(el, values, returnElement) { + return this.doInsert('beforeEnd', el, values, returnElement); + }, + + doInsert: function(where, el, values, returnEl) { + el = Ext.getDom(el); + var newNode = Ext.core.DomHelper.insertHtml(where, el, this.applyTemplate(values)); + return returnEl ? Ext.get(newNode, true) : newNode; + }, + + /** + * Applies the supplied values to the template and overwrites the content of el with the new node(s). + * @param {Mixed} el The context element + * @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'}) + * @param {Boolean} returnElement (optional) true to return a Ext.core.Element (defaults to undefined) + * @return {HTMLElement/Ext.core.Element} The new node or Element + */ + overwrite: function(el, values, returnElement) { + el = Ext.getDom(el); + el.innerHTML = this.applyTemplate(values); + return returnElement ? Ext.get(el.firstChild, true) : el.firstChild; + } +}, 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 the params are numeric (i.e. {0}) + * or an object (i.e. {foo: 'bar'}). + * @return {String} The HTML fragment + * @member Ext.Template + * @method apply + */ + this.createAlias('apply', 'applyTemplate'); +});