There are two ways to display information on a progress bar:

The <rich:progressBar> component provides 3 predefined macrosubstitution parameters:

You can use them as follows:

Example:

...

<rich:progressBar value="#{bean.incValue1}" minValue="400" maxValue="900">

        <h:outputText value="Min value is {minValue}, current value is {value}, max value is {maxValue}"/>

</rich:progressBar> 

... 

This is the result:

The "parameters" is also a special attribute which defines parameters that can be to get additional data from server (e.g. additional info about process status). All you need is to define the value of your own parameter (e.g parameters="param:'#{bean.incValue1}'") and you can use it to pass the data.

Example:

...

<rich:progressBar value="#{bean.incValue}" parameters="param:'#{bean.dwnlSpeed}'">

    <h:outputText value="download speed {param} KB/s"/>

</rich:progressBar>

... 

This is the result:

The "progressVar" attribute (deprecated) defines request scoped variable that could be used for substitution purpose. This variable contains the data taken from "value" attribute. Please, study carefully the following example.

Example:

...

<rich:progressBar value="#{bean.incValue1}" enabled="#{bean.enabled1}" id="progrs1" progressVar="progress">

    <h:outputText value="{progress}%"/>

</rich:progressBar>

... 

In the shown example "progressVar" attribute defines a variable "progress" with the value taken from "value" attribute of the <rich:progressBar> component. The "progress" variable performs substitution passing the current progress value to the "value" attribute of the <h:outputText> . This is how the current value of a progress appears on the label of <rich:progressBar> .

As the "progressVar" attribute is deprecated, it's better to use the predefined macrosubstitution parameter {value} instead. See how you can rewrite the above example with the help of {value}.

Example:

...

<rich:progressBar value="#{bean.incValue1}" enabled="#{bean.enabled1}" id="progrs1">

    <h:outputText value="{value}%"/>

</rich:progressBar>

... 

The component can also employ "initial" and "complete" facets to display the states of the process: "initial" facet is displayed when the progress value is less or equal to "minValue" , and the "complete" facet is shown when the value is greater or equal to "maxValue" . Please see an example below.

Example:

...

<rich:progressBar value="#{bean.incValue1}">

    <f:facet name="initial">

        <h:outputText value="Process not started"/>

    </f:facet>

    <f:facet name="complete">

        <h:outputText value="Process completed"/>

    </f:facet>

</rich:progressBar> 

 ...