I am trying to understand how things connect in the Admin Dashboard example, the register page here: http://examples.sencha.com/extjs/6.5...assic#register

FYI, I have read the entire docs on the quick start and the guide (which includes almost everything), and yet I find few things that I cannot connect. Maybe the docs need improvement or maybe I'm just dumb. I'll find out if its the latter.

This is the entire source code for the application: https://github.com/bjornharrtell/ext...dmin-dashboard. I am working with the classic version.

Now for the register page, the main view is this: https://github.com/bjornharrtell/ext...on/Register.js

My questions are:

1. At line 25: cls: 'auth-dialog-register'. Which means an extra css class is being added to the component. Now I searched the scss files and did not find the style definitions for this class anywhere. Since this component is the 'authdialog', I looked at this file in particular: https://github.com/bjornharrtell/ext...on/Dialog.scss, but I cannot find 'auth-dialog-register' anywhere. Where is that class defined? Or is it not being used(in that case, bummer)

2. Similarly at lines: Line 42, Line 57 also, there is a class 'auth-textbox' being attached to text boxes, but I cannot find where its styles are defined.

3. Moving on, on line 49, for the textfield, a 'triggers' config is defined. In the docs it is here: http://docs.sencha.com/extjs/6.5.1/c...l#cfg-triggers , It really doesn't explain anything, just a bunch of code. Also on the next line in the Register.js file, on line 50, it has a 'glyphed' config inside triggers. Again, I cannot find out in the docs what it is used for. Sure the idea is clear, that it is used for a textbox trigger, but I need to be sure I know what is happening.

4. My next question is probably connected with the previous one. If you look at the example page: http://examples.sencha.com/extjs/6.5...assic#register, you see that all text boxes have an icon saying what the field is for: Email field has an email icon. How did that come? I'm pretty sure it had to do with the triggers config in my previous question. According to the documentation https://docs.sencha.com/extjs/6.0.2/.../font_ext.html, I should use a 'iconCls' config, but here that is not used.

Please someone explain this. Is it reasonable to have these questions? Or should I have been able to figure them out? I am new to Sencha and have just started learning it from 2 weeks.