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
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

The BoxSelect extension


Ext.ux.form.field.BoxSelect is a combobox, extended for more intuitive multiselect capabilities using individually labeled selected items, developed by Kevin Vaughan.

In the following screenshot you can see how multiple items are selected within a BoxSelect combobox:

In the following screenshot you can see how the selected values and the dropdowns are both configured via templates:

The following are some of the features of BoxSelect:

  • Individually removable labeled items for each selected value.

  • Customizable item templates, in addition to combobox's support of customizable drop-down list templates.

  • Keyboard-based selection and navigation of selected values (left/right, Shift, Ctrl + A, Backspace, Delete).

  • On-demand loading of values from remote stores when an unknown value is set, that is, setting queryMode = 'remote' and forceSelection = true.

  • Creation of new value records for forceSelection = false.

  • Configurable pinning of combo pick list for multiSelect = true.

  • Configurable...