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Progress bar is a progress indicator that can work on the client side by itself or gets its progress update from the server using ajax.


Client side only:

        <script type="text/javascript">
            function begin()
                this.progressInterval = setInterval (
                    clientSideBar.setValue(clientSideBar.getValue() + 10);
                , 2000);

            function stop()
            <ace:progressBar widgetVar="clientSideBar" />
        <h:commandButton onclick="begin();" ... />
        <h:commandButton onclick="stop();" ... />

Client polling server:

        <ace:progressBar widgetVar="#{upload.widgetVarName}" ajax="true" interval="2000" value="#{upload.progressValue}" ... />
        <h:commandButton onclick="#{upload.widgetVarName}.start();" ... />

Component Attributes

TagLib Documentation
This section covers attributes involved in the typical use-cases for this component. For reference, the complete taglib documentation for this component is available here.

ajax specifies the mode of progressBar, in ajax mode progress value is retrieved from a backing bean.

cancelListener, changeListener, completeListener are the listeners for the different stages of the progress. In the change event you can get the value and percentage of the progress bar.

interval is time between polls to the server in milliseconds.

JavaScript APIs / Client Behaviours

The client side progress bar object is exposed through the global variable name specified in the widgetVar attribute. You can use the getValue() and setValue() methods to read and change the value. Use the start() and cancel() methods for polling. See Usage above for examples.

Keyboard and ARIA Support

Known Issues

Other Resources

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