Dashboard module for Zikula Core 1.3+

Copyright Zikula Foundation 2012 license LGPLv3+

User-side, this module provides a Dashboard in the My Account panel and a block for easy placement. The module implements a simple UI to add and remove widgets, and to order widgets with drag and drop.

Module developer side, this module provides a way for any module to register widgets for display in the Dashboard.

Widgets simply provide content to be displayed in the widget dashboard. They can return any kind of HTML content. Widgets must be classes which implement the Dashboard_AbstractWidget and follows the usual autoloading standards in Zikula <Modname>_Widget_<Widgetname> and stored in the corresponding Widget folder.

Widgets are stored in 3rd party modules, not in the Dashboard module.

Each method is explained:

• getName() sets the internal name of the widget (in lower case, e.g. modname_widgetname).
• getModule() sets the module owner of the widget.
• getTitle() sets the display title.
• setContent() sets the (HTML) content of the widget. This could typically return some function call, ModUtil::apiFunc() call.
• getUrl() sets the URL the widget should link to, if any.
• getIcon() sets the name of any display icon (for widget add view).

An example is shown below:

class Example_Widget_Foo extends Dashboard_AbstractWidget
{
    protected $domain = 'module_example'; // translation domain

    public function getName()
    {
        return 'example_foo';
    }

    public function getTitle()
    {
        return $this->__('Example widget foo');
    }

    public function getContent()
    {
        return ModUtil::apiFunc('Dashboard', 'widget', 'foo');
    }

    public function getUrl()
    {
        return ModUtil::url('Dashboard', 'widget', 'example');
    }

    public function getIcon()
    {
        return 'foo.png'; // stored in module's image/ folder
    }
}

All widgets provided by a module must be registered with the Dashboard. This is typically done in the module's Installer.php.

For example:

$widget = new Example_Widget_DisplayUsers();
ModUtil::apiFunc('Dashboard', 'admin', 'registerWidget', array('widget' => $widget));

The use of ModUtil::apiFunc() here avoids the need to check if the Dashboard module is installed and active.

Similarly they can be removed by

ModUtil::apiFunc('Dashboard', 'admin', 'registerWidget',
    array('name' => $name,
          'module' => $module,
    )
);

Because widget providing modules may be installed before the Dashboard is installed, it is important to register an event listener for installer.module.installed so that widgets can be retroactively registered if/when the Dashboard module is installed.

Example:

class Example_Listener_DashboardInstallListener
{
    /**
     * On an module remove hook call this listener
     *
     * Listens for the 'installer.module.installed' event.
     *
     * @param Zikula_Event $event Event.
     */
    public static function onInstallModule(Zikula_Event $event)
    {
        if ($event['name'] == 'dashboard') {
            ModUtil::apiFunc('Dashboard', 'admin', 'registerWidget', array(
                'widget' => new Example_Widget_Foo()
            ));

            ModUtil::apiFunc('Dashboard', 'admin', 'registerWidget', array(
                'widget' => new Example_Widget_Foo2()
            ));
        }
    }
}

This would be registered in the normal way using something like:

EventUtil::registerPersistentModuleHandler($this->name, 'installer.module.uninstalled',
                                               array('Example_Listener_InstallListener', 'onInstallModule'));