Ext JS in Action, Pap/Psc Edition

Chapter 13. Drag-and-drop basics

This chapter covers

• Understanding the drag-and-drop workflow
• Dissecting the Ext JS drag-and-drop classes
• Implementing drag-and-drop override methods
• Exercising the full drag-and-drop lifecycle

One of the greatest advantages of using a graphical user interface is the ability to easily move items around the screen with simple mouse gestures. This interaction is known as drag and drop. We use drag and drop just about every time we use a modern computer without giving it a second thought. If you step back and think about it, you’ll realize how this makes our lives a lot easier.

Want to delete a file? Click and drag the file icon and drop it on the trash or recycle bin icon. Easy, right? What if you didn’t have ...