Working with Common Classes > Classes > NativeDelegate > NativeDelegate Constructor

NativeDelegate Constructor

Syntax

PP.NativeDelegate(func: Function, context: Object, args: Object, params: Object)

Parameters

func. Event handler.

context. The control, for which event a handler is set.

args. Event arguments.

params. Event parameters.

Description

The NativeDelegate constructor creates an instance of the NativeDelegate class.

Example

To execute the example, add links to PP.js scenario file and PP.css styles file to HTML page in the <head> tag, and specify the ready() value for the onload attribute in the <body> tag. Create a button and add an event handler of mouse button click:

var button;
function createButton() {
    // Create a button
    button = new PP.Ui.Button({
        // Set a parent node
        ParentNode: document.body,
        // Set button's contents
        Content: "Button"    
    });
}
// process the button click event
function onClick(sender, args) { 
    console.log("Button is clicked")
}
function ready() {
    // Create a button
    this.createButton();
    // Create settings for the mouse button click event handler
    var setting = {
        // Specify the control, for which event the handler is set
        ParentControl: button,
        // Set event handler name
        HandleName: button.Click.getHandleName(),
        // Set name of the event, for which the handler is set
        NativeEvent: button.Click.getNativeEvent(),
        // Specify that the event is not fired by touching the corresponding control
        IsTouchDisabled: True
    };
    // Create a mouse button click event handler
    var delegate = new PP.NativeDelegate(onClick, this, null, setting);
    // Add a button click event handler
    delegate.add(onClick, button);
    button.Click = delegate;
}

After the mouse button click the browser console displays the appropriate message:

Button is clicked