Alien-Web-ExtJS-V3
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  <pre class="prettyprint lang-js"><span id='Ext-Action-method-constructor'><span id='Ext-Action'>/**
</span></span> * @class Ext.Action
 * &lt;p&gt;An Action is a piece of reusable functionality that can be abstracted out of any particular component so that it
 * can be usefully shared among multiple components.  Actions let you share handlers, configuration options and UI
 * updates across any components that support the Action interface (primarily {@link Ext.Toolbar}, {@link Ext.Button}
 * and {@link Ext.menu.Menu} components).&lt;/p&gt;
 * &lt;p&gt;Aside from supporting the config object interface, any component that needs to use Actions must also support
 * the following method list, as these will be called as needed by the Action class: setText(string), setIconCls(string),
 * setDisabled(boolean), setVisible(boolean) and setHandler(function).&lt;/p&gt;
 * Example usage:&lt;br&gt;
 * &lt;pre&gt;&lt;code&gt;
// Define the shared action.  Each component below will have the same
// display text and icon, and will display the same message on click.
var action = new Ext.Action({
    {@link #text}: 'Do something',
    {@link #handler}: function(){
        Ext.Msg.alert('Click', 'You did something.');
    },
    {@link #iconCls}: 'do-something',
    {@link #itemId}: 'myAction'
});

var panel = new Ext.Panel({
    title: 'Actions',
    width: 500,
    height: 300,
    tbar: [
        // Add the action directly to a toolbar as a menu button
        action,
        {
            text: 'Action Menu',
            // Add the action to a menu as a text item
            menu: [action]
        }
    ],
    items: [
        // Add the action to the panel body as a standard button
        new Ext.Button(action)
    ],
    renderTo: Ext.getBody()
});

// Change the text for all components using the action
action.setText('Something else');

// Reference an action through a container using the itemId
var btn = panel.getComponent('myAction');



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