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ExtGWT Rich Internet Application Cookbook by Odili Charles Opute

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Chapter 10. Drag-and-drop

In this chapter we will cover:

  • Dragging any component
  • Simple DnD within components
  • DnD across components
  • DnD from desktop, with HTML5
  • Implementing custom DnD on tabs

Introduction

Drag-and-drop (DnD) is one of the most widely underestimated and underused features in web applications. Although there are several libraries that enhance the browser's native support and handling of DnD, we are yet to see widespread adoption of this UI interaction magic maker. Using drag-and-drop with a web application can make it a lot easier, user friendly, and more fun, giving users flexibility to easily move, sort, or swap objects that can be very difficult and sometimes ugly to accomplish with buttons or links.

Drag-and-drop operations must have ...

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