extjs-gpl/build/examples/kitchensink/modern/src/view/drag/SimpleController.js

GPL licensed version of Sencha Ext JS

Ext.define('KitchenSink.view.drag.SimpleController', {
    extend: 'Ext.app.ViewController',
    alias: 'controller.drag-simple',

    init: function(view) {
        this.source = new Ext.drag.Source({
            element: view.element.down('.simple-source'),
            constrain: true,
            listeners: {
                dragmove: function(source, info) {
                    var pos = info.element.current,
                        html = Ext.String.format('X: {0}, Y: {1}', Math.round(pos.x), Math.round(pos.y));

                    source.getElement().setHtml(html);
                },
                dragend: function(source) {
                    source.getElement().setHtml('Drag Me!');
                }
            }
        });
    },

    destroy: function() {
        this.source = Ext.destroy(this.source);
        this.callParent();
    }
});