Launch a fresh window with the a4j:commandButton

When using A4J and Richfaces in a web application, I have a requirement to trigger the opening of a new browser window upon the user's click on the <a4j:commandButton>.

To achieve this, I believe I will have to utilize the window.open(URL, ...) method. However, I am uncertain about where exactly I should place this code.

The definition of my <a4j:commandButton> is as follows:

<a4j:commandButton id="elementDetailsButton"
    onclick="if (!confirm('Are you sure? Unsaved data will be lost')) { return false; }"
    action="#{myBean.elementDetailsAction}"
    value="Element Details">
    <a4j:actionparam name="elementDetailsString"
        value="getElementDetails()"
        assignTo="#{myBean.elementDetails}" noEscape="true">
    </a4j:actionparam>
</a4j:commandButton>
javascriptajaxrichfacesajax4jsf

Answer №1

To confirm the action of window.open, consider not using return false

<a4j:commandButton id="elementDetailsButton"
    onclick="if (confirm('Are you sure? Unsaved data will be lost')) { window.open(URL, ...) } else { return false }" (...) />

Using "else" is optional and may not be necessary.

Alternatively, you can try changing the form target, although I'm not entirely certain about the correct syntax.

<a4j:commandButton id="elementDetailsButton" onclick="this.form.taget='_blank'" (...) />

...or something along those lines.

Changing the form target may lead to some challenges. Other parts of your application will now target the new window. To address this issue, I used a <h:commandLink/> to close the window (modalPanel) and reset the form target.

In my case, I utilized the target manipulation to display .pdf reports within a <rich:modalPanel/> using an <iframe/>.

However, changing the form target may not be the ideal solution for your specific situation.

Answer №2

It appears that you are looking to include a confirmation prompt, perform an action, and open a new window with your command button. While it may be a bit tricky for a single button to handle all of these tasks, you could experiment with leveraging onload configuration to assign the desired action to the page load and have the command button take care of both the confirmation and opening the window, following Renan's advice.

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