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.Element (defaults to undefined)
* @return {HTMLElement/Ext.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.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.Element (defaults to undefined)
* @return {HTMLElement/Ext.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;
}
});
/**
* 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
*/
Ext.Template.prototype.apply = Ext.Template.prototype.applyTemplate;
/**
* 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
*/
Ext.Template.from = function(el, config) {
el = Ext.getDom(el);
return new Ext.Template(el.value || el.innerHTML, config || '');
};
/**
* @class Ext.XTemplate
* @extends Ext.Template
* A template class that supports advanced functionality like:
XTemplate provides the templating mechanism built into:
This is the data object used for reference in each code example:
*
var data = {
name: 'Tommy Maintz',
title: 'Lead Developer',
company: 'Ext JS, Inc',
email: 'tommy@extjs.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
}]
};
The tpl tag and the for operator are used * to process the provided data object: *
<tpl for=".">...</tpl> // loop through array at root node
<tpl for="foo">...</tpl> // loop through array at foo node
<tpl for="foo.bar">...</tpl> // loop through array at foo.bar node
var tpl = new Ext.XTemplate(
'<p>Kids: ',
'<tpl for=".">', // process the data.kids node
'<p>{#}. {name}</p>', // use current array index to autonumber
'</tpl></p>'
);
tpl.overwrite(panel.body, data.kids); // pass the kids property of the data object
An example illustrating how the for property can be leveraged * to access specified members of the provided data object to populate the template:
*
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>',
'<p>Title: {title}</p>',
'<p>Company: {company}</p>',
'<p>Kids: ',
'<tpl for="kids">', // interrogate the kids property within the data
'<p>{name}</p>',
'</tpl></p>'
);
tpl.overwrite(panel.body, data); // pass the root node of the data object
Flat arrays that contain values (and not objects) can be auto-rendered * using the special {.} variable inside a loop. This variable * will represent the value of the array at the current index:
*
var tpl = new Ext.XTemplate(
'<p>{name}\'s favorite beverages:</p>',
'<tpl for="drinks">',
'<div> - {.}</div>',
'</tpl>'
);
tpl.overwrite(panel.body, data);
When processing a sub-template, for example while looping through a child array, * you can access the parent object's members via the parent object:
*
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>',
'<p>Kids: ',
'<tpl for="kids">',
'<tpl if="age > 1">',
'<p>{name}</p>',
'<p>Dad: {parent.name}</p>',
'</tpl>',
'</tpl></p>'
);
tpl.overwrite(panel.body, data);
The tpl tag and the if operator are used * to provide conditional checks for deciding whether or not to render specific * parts of the template. Notes:
<tpl if="age > 1 && age < 10">Child</tpl>
<tpl if="age >= 10 && age < 18">Teenager</tpl>
<tpl if="this.isGirl(name)">...</tpl>
<tpl if="id==\'download\'">...</tpl>
<tpl if="needsIcon"><img src="{icon}" class="{iconCls}"/></tpl>
// no good:
<tpl if="name == "Tommy"">Hello</tpl>
// encode " if it is part of the condition, e.g.
<tpl if="name == "Tommy"">Hello</tpl>
*
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>',
'<p>Kids: ',
'<tpl for="kids">',
'<tpl if="age > 1">',
'<p>{name}</p>',
'</tpl>',
'</tpl></p>'
);
tpl.overwrite(panel.body, data);
The following basic math operators may be applied directly on numeric * data values:
* + - * / ** For example: *
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>',
'<p>Kids: ',
'<tpl for="kids">',
'<tpl if="age > 1">', // <-- Note that the > is encoded
'<p>{#}: {name}</p>', // <-- Auto-number each item
'<p>In 5 Years: {age+5}</p>', // <-- Basic math
'<p>Dad: {parent.name}</p>',
'</tpl>',
'</tpl></p>'
);
tpl.overwrite(panel.body, data);
Anything between {[ ... ]} is considered code to be executed
* in the scope of the template. There are some special variables available in that code:
*
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>',
'<p>Company: {[values.company.toUpperCase() + ", " + values.title]}</p>',
'<p>Kids: ',
'<tpl for="kids">',
'<div class="{[xindex % 2 === 0 ? "even" : "odd"]}">',
'{name}',
'</div>',
'</tpl></p>'
);
tpl.overwrite(panel.body, data);
One or more member functions can be specified in a configuration * object passed into the XTemplate constructor for more complex processing:
*
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>',
'<p>Kids: ',
'<tpl for="kids">',
'<tpl if="this.isGirl(name)">',
'<p>Girl: {name} - {age}</p>',
'</tpl>',
// use opposite if statement to simulate 'else' processing:
'<tpl if="this.isGirl(name) == false">',
'<p>Boy: {name} - {age}</p>',
'</tpl>',
'<tpl if="this.isBaby(age)">',
'<p>{name} is a baby!</p>',
'</tpl>',
'</tpl></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);