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Handling User Interactions

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In Ext JS 4, event listeners that affect multiple views and/or the data package are typically placed within Controllers. Event listeners that only affect the view in which they've been triggered typically remain within the view itself to help with encapsulation.

Component events and the arguments that are transmitted to their respective handlers are listed within the API docs as illustrated by the figure below.

Sencha Architect enables you to define an event handler on a component via the Event Bindings attribute within the Config Panel.

Reviewing supported component events and their handler arguments.

Typically event handlers perform the following functions:

  • Apply filters to Stores
  • Add and remove components
  • Show and hide components
  • Enable and disable components
  • Modify the content of Panels
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