Useful tips.
1. 'mousewheel' event indeed can be removed. Something is messed up in my code. Need to figure out a way to avoid functions registered twice.
2. Ext.apply, Ext.applyIf, can quickly apply options to a given object;
3. function.call(this), execute the function under a specific scope.
4. Ext.reg(), register custom xtypes
5. EventManger.onWindowResize(), add custom window resize functions, which are performed right AFTER the viewport sync functions.
6. Function.createSequence can create a function that call same params with the original
Btw, !important in CSS means immutable..and non-overidable D:
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