Let’s start by describing DOM elements’ event handling. DOM node event handling First of all you wouldn’t want to work with DOM node directly. Instead you probably would want to utilize Ext.Element interface. For the purpose of assigning event handlers, Element.addListener and Element.on (these are equivalent) were created. So, for example, if we have html: … Read more
I had the same problem, afaik has to do with selectlist rendering before the items are added to the store. I tried the callback method mentioned above without any luck (guess it would have to be a callback on the selectlist rather than the store). I added this line after adding items to the store … Read more
After quite much research through the sparse documentation, and thanks to great questions and answers in SO, I came up with a simple class, that adds this functionality and and allows for configurations. It looks like this: You add this field in your grid like this: Ext.define(‘Sandbox.view.OwnersGrid’, { extend: ‘Ext.grid.Panel’, requires: [‘Sandbox.view.SearchTrigger’], alias: ‘widget.ownersGrid’, store: … Read more
If you do not have a deep understanding of how ExtJS class system work, you may want to follow this: Declare all non-primitive types in initComponent(). Terminology Primitive types – strings, booleans, integers, etc. Non-Primitives – arrays & objects. Explanation If the component you extend is to be created more than once, any non-primitive configs … Read more
There are severe gotchas with using IDs and getCmp to find your components. The primary issue is that you can not reuse the component safely because in most cases the markup will create HTML elements with duplicate IDs, which is invalid HTML. Additionally, when you have two components with the same ID you will run … Read more
For clarification: By real class modification I mean a intended permanent modification/extension of a class, which should always be done by extending a class. But it is not a temporary solution for just a specific problem (bug-fix, etc.). You have at least four options how to override members of (Ext) Classes prototype I guess is … Read more
Need to convert it in base64. JS have btoa() function for it. For example: var img = document.createElement(‘img’); img.src=”data:image/jpeg;base64,” + btoa(‘your-binary-data’); document.body.appendChild(img); But i think what your binary data in pastebin is invalid – the jpeg data must be ended on ‘ffd9’. Update: Need to write simple hex to base64 converter: function hexToBase64(str) { return … Read more