Book Image

Ext JS 4 Plugin and Extension Development

By : Abdullah Al Mohammad
Book Image

Ext JS 4 Plugin and Extension Development

By: Abdullah Al Mohammad

Overview of this book

Ext JS is a pure JavaScript application framework for building interactive web applications using techniques such as Ajax, DHTML, and DOM scripting. Ext JS 4 Plugin and Extension Development is a practical, step-by-step tutorial which guides you to learn and develop ExtJS plugins and extensions. There are a lot of examples with explanations and plenty of code provided to make it easier and quicker to pick up. Starting with the fundamentals, this book introduces some of the ExtJS library and community provided plugins and extensions and finishes with several hands-on, real world development examples. You will get a clear concept of ExtJS plugins and extensions and learn how to use them. You will also learn how to develop an ExtJS plugin and extension by going through several examples with code and screenshots. Ext JS 4 Plugin and Extension Development book will provide you with the knowledge to develop ExtJS plugins and extensions using real-life examples.
Table of Contents (16 chapters)
Ext JS 4 Plugin and Extension Development
About the Author
About the Reviewers

The TreeViewDragDrop plugin

This plugin provides a drag and/or drop functionality for a TreeView class. It creates a specialized instance of DragZone, which knows how to drag out of a TreeView class, and loads the data object which is passed on to the cooperating methods of DragZone with the following properties:

  • copy: Boolean

    It is the value of the copy property of TreeView or true if the TreeView class was configured with allowCopy set to true and the Ctrl key was pressed when the drag operation was begun.

  • view: TreeView

    It is the source TreeView from which the drag originated.

  • ddel: HtmlElement

    It is the drag proxy element which moves with the mouse.

  • item: HtmlElement

    It is the TreeView node upon which the mousedown event was registered.

  • records: Array

    It is an array of models representing the selected data being dragged from the source TreeView.

It also creates a specialized instance of Ext.dd.DropZone, which cooperates with other DropZone classes. These DropZone classes are members of...