Example usage for com.vaadin.ui Component getExtensions

Introduction

In this page you can find the example usage for com.vaadin.ui Component getExtensions.

Prototype

public Collection<Extension> getExtensions();

Source Link

Document

Get a read-only collection of all extensions attached to this connector.

Usage

From source file:org.vaadin.addons.portallayout.portal.PortalBase.java

License:Apache License

/**
 * Finds or creates a Portlet based on the Component. In case there is no
 * Portlet existing for the given Component - a new Portlet is created, if
 * there is a Portlet but it belongs to a different PortalLayout, current
 * Portal steals the Component from it./*from   w w  w.  java2  s . c  o m*/
 * 
 * @param c
 *            content Component.
 * @return either Portlet instance from own mapping, other portlets mapping
 *         or a newly created instance.
 */
protected Portlet getOrCreatePortletForComponent(Component c) {
    Portlet result = (Portlet) getState().contentToPortlet.get(c);
    if (result != null) {
        return result;
    } else {
        for (Extension extension : c.getExtensions()) {
            if (extension instanceof Portlet) {
                addPortletMapping(c, (Portlet) extension);
                return (Portlet) extension;
            }
        }
    }
    result = createPortlet(c);
    return result;
}

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