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Control.extend([staticProperties,] instanceProperties)
Create a new, extended, control constructor function.
Parameters
- staticProperties
{Object}:An object of properties and methods that are added the control constructor function directly. The most common property to add is defaults.
- instanceProperties
{Object}:An object of properties and methods that belong to instances of the
Controlconstructor function. These properties are added to the control'sprototypeobject. Properties that look like event handlers (ex:"{element} click"or"{element} li mouseenter") are setup as event handlers.
Returns
{constructor(element, options) => can-construct}:
A control constructor function that has been
extended with the provided staticProperties and instanceProperties.
Examples
// Control that writes "hello world"
HelloWorld = Control.extend({
init: function(element){
element.text("hello world")
}
});
new HelloWorld("#message");
// Control that shows how many times
// the element has been clicked on
ClickCounter = Control.extend({
init: function(){
this.count = 0;
this.element.text("click me")
},
"{element} click": function(){
this.count++;
this.element.text("click count = "+this.count)
}
})
new ClickCounter("#counter");
// Counter that counts a specified event
// type
CustomCounter = Control.extend({
defaults: {
eventType: "click"
}
},{
init: function(){
this.count = 0;
this.element.text(this.options.eventType+" me")
},
"{element} {eventType}": function(){
this.count++;
this.element.text(this.options.eventType+
" count = "+
this.count);
}
})
new CustomCounter("#counter");
new CustomCounter("#buy",{
eventType: "mouseenter"
});