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Learning Ext JS_Fourth Edition

You're reading from   Learning Ext JS_Fourth Edition Create powerful web applications with the new and improved Ext JS 5 library

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Product type Paperback
Published in Jul 2015
Publisher
ISBN-13 9781784394387
Length 452 pages
Edition 1st Edition
Tools
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Authors (3):
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Carlos A Mendez Segura Carlos A Mendez Segura
Author Profile Icon Carlos A Mendez Segura
Carlos A Mendez Segura
Crysfel Villa Crysfel Villa
Author Profile Icon Crysfel Villa
Crysfel Villa
Armando Gonzalez Armando Gonzalez
Author Profile Icon Armando Gonzalez
Armando Gonzalez
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Toc

Table of Contents (17) Chapters Close

Preface 1. An Introduction to Ext JS 5 2. The Core Concepts FREE CHAPTER 3. Components and Layouts 4. It's All about the Data 5. Buttons and Toolbars 6. Doing It with Forms 7. Give Me the Grid 8. DataViews and Templates 9. The Tree Panel 10. Architecture 11. The Look and Feel 12. Responsive Configurations and Tablet Support 13. From Drawing to Charting 14. Finishing the Application 15. What's Next? Index

Handling events in DataView


Once we have our DataView defined, we are going to see some basic event handling for it. To do this, we need to add some new properties to our view definition so that we can assign events:

  var myDataview = Ext.create('Ext.view.View', {
    store: myStore,
    tpl: myTpl,
    padding: 6,
    itemSelector: 'div.user', //Step 1
    emptyText: '<b>No users available</b>'
  });

We added the itemSelector property (Step 1). It defines which DOM node item will be used to select each item (data model) with which the DataView will be working.

You can use CSS selectors to define the itemSelector property.

And now, let's add the event listener:

var myDataview = Ext.create('Ext.view.View', {
store: myStore,
  tpl: myTpl,
  padding: 6,
  itemSelector: 'div.user',
  emptyText: '<b>No users available</b>',
  listeners: {
    itemclick: {
      fn:function( view, record, item, index, evt, eOpts ){
        Ext.Msg.alert(
          "Dataview record selected...
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