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Oracle Application Express 4.0 with Ext JS by Mark Lancaster

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Mixing ComboBoxes with Dynamic Actions

Dynamic Actions provide a declarative mechanism for generating JavaScript to provide client-side behaviors. Native actions include simple actions that show, hide, enable, and disable page elements when a page item's value changes. More advanced native actions include setting item values, executing JavaScript code, and executing PL/SQL code via AJAX calls.

Native actions work immediately for custom plug-ins based on simple DOM elements, such as the NumberField plugin in Chapter 7,Working with Plug-ins and Dynamic Actions. For plugins based on multiple DOM elements such as the ComboBox, or the built-in APEX shuttle-box, some additional work has to be done before the native dynamic actions will work correctly. ...

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