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Developers may change the WindowState via either a link or via Java code.

Code Block

	html	html
title	Changing WindowState via HTML
	html

    <portlet:actionURL windowState="maximized"/>

java

Code Block

	java
title	Changing WindowState via Java
	java

    actionResponse.setWindowState(WindowState.MAXIMIZED);

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Spring Web-Flow and the Annotation Driven controllers do not have any special handling for the MINIMIZED WindowState. This means the default behavior is the portlets render normally whenever they are minimized. To address this a HandlerInterceptor to skip rendering when minimized. The handler interceptor to accomplish this is listed below along with the Spring Bean's configuration snippets for both WebFlow and Annotation Based Controllers

java

Code Block

	java
title	Minimized Handler Interceptor
	java

package org.jasig.portlet.web;

import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.portlet.WindowState;

import org.springframework.web.portlet.handler.HandlerInterceptorAdapter;

public class MinimizedStateHandlerInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandleRender(RenderRequest request, RenderResponse response, Object handler) throws Exception {
        if (WindowState.MINIMIZED.equals(request.getWindowState())) {
            return false;
        }
        
        return true;
    }
}

Code Block

	xml	xml
title	Web Flow Interceptor Configuration
	xml

<bean id="portletModeHandlerMapping" class="org.springframework.web.portlet.handler.PortletModeHandlerMapping">
    <property name="interceptors"><bean class="org.jasig.portlet.web.MinimizedStateHandlerInterceptor"/></property>
    <property name="portletModeMap">
        <map>
            <entry key="view">
                <bean class="org.jasig.portal.portlets.flow.ParamaterizableFlowHandler">
                    <property name="flowId" value="my-application-flow" />
                </bean>
            </entry>
        </map>
    </property>
</bean>

Code Block

	xml	xml
title	Annotation Based Controller Configuration
	xml

<context:annotation-config/>
<context:component-scan base-package="org.jasig.portlet.web"/>

<bean class="org.springframework.web.portlet.mvc.annotation.DefaultAnnotationHandlerMapping">
    <property name="interceptors"><bean class="org.jasig.portlet.web.MinimizedStateHandlerInterceptor"/></property>
</bean>

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