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Posted to pluto-scm@portals.apache.org by cd...@apache.org on 2008/10/23 05:14:23 UTC

svn commit: r707253 - /portals/pluto/branches/2.0-spi-refactoring/pluto-portal-driver/src/main/java/org/apache/pluto/driver/tags/PortletModeDropDownTag.java

Author: cdoremus
Date: Wed Oct 22 20:14:23 2008
New Revision: 707253

URL: http://svn.apache.org/viewvc?rev=707253&view=rev
Log:
Fix for PLUTO-513 to support portlet managed modes as defined in PLT.8.4. of the JSR-286 spec.

Added:
    portals/pluto/branches/2.0-spi-refactoring/pluto-portal-driver/src/main/java/org/apache/pluto/driver/tags/PortletModeDropDownTag.java   (with props)

Added: portals/pluto/branches/2.0-spi-refactoring/pluto-portal-driver/src/main/java/org/apache/pluto/driver/tags/PortletModeDropDownTag.java
URL: http://svn.apache.org/viewvc/portals/pluto/branches/2.0-spi-refactoring/pluto-portal-driver/src/main/java/org/apache/pluto/driver/tags/PortletModeDropDownTag.java?rev=707253&view=auto
==============================================================================
--- portals/pluto/branches/2.0-spi-refactoring/pluto-portal-driver/src/main/java/org/apache/pluto/driver/tags/PortletModeDropDownTag.java (added)
+++ portals/pluto/branches/2.0-spi-refactoring/pluto-portal-driver/src/main/java/org/apache/pluto/driver/tags/PortletModeDropDownTag.java Wed Oct 22 20:14:23 2008
@@ -0,0 +1,253 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.pluto.driver.tags;
+
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.ResourceBundle;
+import java.util.Set;
+
+import javax.portlet.PortletConfig;
+import javax.portlet.PortletMode;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletRequest;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.jsp.JspException;
+import javax.servlet.jsp.JspWriter;
+import javax.servlet.jsp.tagext.BodyTagSupport;
+import javax.servlet.jsp.tagext.TagSupport;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.pluto.PortletContainer;
+import org.apache.pluto.PortletContainerException;
+import org.apache.pluto.PortletWindow;
+import org.apache.pluto.driver.AttributeKeys;
+import org.apache.pluto.driver.config.DriverConfiguration;
+import org.apache.pluto.driver.core.PortalRequestContext;
+import org.apache.pluto.driver.core.PortletWindowImpl;
+import org.apache.pluto.driver.services.portal.PortletWindowConfig;
+import org.apache.pluto.driver.url.PortalURL;
+import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;
+
+/**
+ * The tag is used to render a portlet mode anchor specified by the portlet ID and mode.
+ * This is designed to live inside of a <pluto:portlet/> tag.
+ * 
+ * <pluto:modeDropDown />
+ *
+ */
+public class PortletModeDropDownTag extends BodyTagSupport {
+    
+	private static final long serialVersionUID = 1L;
+
+
+	/** Logger. */
+    private static final Log LOG = LogFactory.getLog(PortletModeDropDownTag.class);
+        
+    
+    // Private Member Variables ------------------------------------------------
+    private String portletMode = null;
+    
+    /** The portlet ID attribute obtained from parent tag. */
+    private String portletId = null;
+    
+    /** The evaluated value of the portlet ID attribute. */
+    private String evaluatedPortletId = null;       
+    
+    // BodyTagSupport Impl -----------------------------------------------------
+    
+    /**
+     * Method invoked when the start tag is encountered.
+     * @throws JspException  if an error occurs.
+     */
+    public int doStartTag() throws JspException {
+        
+        // Ensure that the modeAnchor tag resides within a portlet tag.
+        PortletTag parentTag = (PortletTag) TagSupport.findAncestorWithClass(
+                this, PortletTag.class);
+        if (parentTag == null) {
+            throw new JspException("Portlet window controls may only reside "
+                    + "within a pluto:portlet tag.");
+        }
+        
+        portletId = parentTag.getPortletId();        
+        // Evaluate portlet ID attribute.
+        evaluatePortletId();
+        
+        // Retrieve the portlet window config for the evaluated portlet ID.
+        ServletContext servletContext = pageContext.getServletContext();
+        DriverConfiguration driverConfig = (DriverConfiguration)
+                servletContext.getAttribute(AttributeKeys.DRIVER_CONFIG);
+        
+        // Retrieve the portal environment.
+        PortalRequestContext portalEnv = PortalRequestContext.getContext(
+                (HttpServletRequest) pageContext.getRequest());        
+        
+        //find the current mode for use in 'selected' attrib of select option
+		PortalURL requestedPortalUrl = portalEnv.getRequestedPortalURL();
+        PortletWindowConfig windowConfig =
+            PortletWindowConfig.fromId(evaluatedPortletId);
+        // Retrieve the portlet container from servlet context.
+        PortletContainer container = (PortletContainer)
+                servletContext.getAttribute(AttributeKeys.PORTLET_CONTAINER);
+        
+        // Create the portlet window to render.
+        PortletWindow window = new PortletWindowImpl(container, windowConfig, requestedPortalUrl);
+		
+		PortletMode currentMode = requestedPortalUrl.getPortletMode(window.getId().getStringId());
+
+        //start the markup
+        StringBuffer tag = new StringBuffer();
+//        String strCurrentMode = currentMode.toString();        
+//        tag.append("Current mode: " + currentMode.toString());
+        tag.append("<form style=\"display:inline\"><select onchange=\"self.location=this.options[this.selectedIndex].value\">");
+        Set<PortletMode> modeSet = null;
+		try {
+			modeSet = driverConfig.getSupportedPortletModes(evaluatedPortletId);
+		} catch (PortletContainerException e) {
+            throw new JspException(e);
+		}
+		
+		if (modeSet != null) {
+	        Iterator<PortletMode> i = modeSet.iterator();
+	        while (i.hasNext()) {
+	        	PortletMode mode = i.next();
+	
+	            PortalURL portalUrl =  portalEnv.createPortalURL();
+	            portalUrl.setPortletMode(evaluatedPortletId, mode);
+	
+	            // Build a string buffer containing the anchor tag
+	            tag.append("<option value=\"" + portalUrl.toString() + "\"");
+	            //Add 'selected' attribute for current mode.
+	            if (mode.equals(currentMode)) {
+	            	tag.append(" selected=\"true\"");
+	            }
+	            tag.append(">");
+	            if (driverConfig.isPortletManagedMode(evaluatedPortletId, mode.toString())) {
+		            tag.append(getCustomModeDecorationName(driverConfig, mode));	            	
+	            } else {
+	            	tag.append(mode.toString().toUpperCase());
+	            }
+//	            tag.append(mode.toString().toUpperCase());
+	            tag.append("</option>");
+	        }
+		}
+        tag.append("</select><form>");
+        // Print the mode anchor tag.
+        try {
+            JspWriter out = pageContext.getOut();
+            out.print(tag.toString());
+        } catch (IOException ex) {
+            throw new JspException(ex);
+        }
+        
+        // Continue to evaluate the tag body.
+        return EVAL_BODY_INCLUDE;
+    }
+    
+    // Package Methods ---------------------------------------------------------
+    
+    /**
+     * Returns the evaluated portlet ID.
+     * @return the evaluated portlet ID.
+     */
+    String getEvaluatedPortletId() {
+        return evaluatedPortletId;
+    }
+
+    
+    
+    // Private Methods ---------------------------------------------------------
+    
+    /**
+     * Evaluates the portlet ID attribute passed into this tag. This method
+     * evaluates the member variable <code>portletId</code> and saves the
+     * evaluated result to <code>evaluatedPortletId</code>
+     * @throws JspException  if an error occurs.
+     */
+    private void evaluatePortletId() throws JspException {
+        Object obj = ExpressionEvaluatorManager.evaluate(
+                "portletId", portletId, String.class, this, pageContext);
+        if (LOG.isDebugEnabled()) {
+            LOG.debug("Evaluated portletId to: " + obj);
+        }
+        evaluatedPortletId = (String) obj;
+    }
+
+    /**
+     * @return the portletMode
+     */
+    public String getPortletMode() {
+        return portletMode;
+    }
+
+    /**
+     * @param portletMode the portletMode to set
+     */
+    public void setPortletMode(String portletMode) {
+        this.portletMode = portletMode;
+    }
+    
+    private boolean isPortletModeAllowed(DriverConfiguration config, String mode) {
+        LOG.debug("Testing if PortletWindowConfig [" + getEvaluatedPortletId() + "] supports mode [" + mode + "]");
+        return config.isPortletModeSupported(getEvaluatedPortletId(), mode);
+    }
+
+    /**
+     * Obtains decoration name for a portlet managed mode from the portlet's resource bundle
+     * as defined in PLT.8.4 of the JSR-286 spec using the key 
+     * javax.portlet.app.custom-portlet-mode.<custom mode>.decoration-name where
+     * custom mode is the name of the custom mode as defined in portlet.xml
+     * (//portlet-app/custom-portlet-mode/portlet-mode element). If the decoration
+     * name is not found in the resource bundle, this method returns the uppercased
+     * mode name.
+     * 
+     * @param driverConfig the driver config object found in the session.
+     * @param mode the portlet managed custom mode that will be searched for decoration name
+     * in the resource bundle.
+     * @return the decoration name for a portlet managed mode in the resource bundle
+     * using the key javax.portlet.app.custom-portlet-mode.<custom mode>.decoration-name 
+     * where custom mode is the name of the custom mode as defined in portlet.xml
+     * (//portlet-app/custom-portlet-mode/portlet-mode element). If the decoration
+     * name is not found in the resource bundle, the uppercased
+     * mode name is returned.
+     */
+    private String getCustomModeDecorationName(DriverConfiguration driverConfig, 
+    		PortletMode mode) {
+    	//decoration name is mode name by default
+		String decorationName = mode.toString().toUpperCase();
+		ResourceBundle bundle;
+		StringBuffer res;
+		try {
+			PortletConfig config = driverConfig.getPortletConfig(evaluatedPortletId);
+			ServletRequest request = pageContext.getRequest();
+			Locale defaultLocale = request.getLocale();
+			bundle = config.getResourceBundle(defaultLocale);
+			res = new StringBuffer();
+			res.append("javax.portlet.app.custom-portlet-mode.");
+			res.append(mode.toString());
+			res.append(".decoration-name");
+			decorationName = bundle.getString(res.toString());
+		} catch (Exception e) {
+			LOG.debug("Problem finding decoration-name for custom mode: " + mode.toString());
+		}
+		return decorationName;
+    }
+    
+}
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