001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041: package com.sun.rave.web.ui.component.util.descriptors;
042:
043: import com.sun.rave.web.ui.util.PermissionChecker;
044:
045: import java.io.IOException;
046: import java.util.ArrayList;
047: import java.util.HashMap;
048: import java.util.Iterator;
049: import java.util.List;
050: import java.util.Map;
051:
052: import javax.faces.context.FacesContext;
053: import javax.faces.context.ResponseWriter;
054: import javax.faces.component.UIColumn;
055: import javax.faces.component.UIComponent;
056: import javax.faces.component.UIData;
057: import javax.faces.component.UIViewRoot;
058: import javax.faces.render.Renderer;
059:
060: /**
061: * <P> This class defines a LayoutIf {@link LayoutElement}. The LayoutIf
062: * provides the functionality necessary to conditionally display a portion
063: * of the layout tree. The condition is a boolean equation and may use
064: * "$...{...}" type expressions to substitute in values.</P>
065: *
066: * @see com.sun.rave.web.ui.util.VariableResolver
067: * @see com.sun.rave.web.ui.util.PermissionChecker
068: *
069: * @author Ken Paulsen (ken.paulsen@sun.com)
070: */
071: public class LayoutIf extends LayoutElementBase implements
072: LayoutElement {
073:
074: /**
075: * Constructor
076: */
077: public LayoutIf(LayoutElement parent, String condition) {
078: super (parent, null);
079: _condition = condition;
080: }
081:
082: /**
083: * Accessor for condition boolean equation.
084: */
085: public String getCondition() {
086: return _condition;
087: }
088:
089: /**
090: * This method returns true if the condition of this LayoutIf is met,
091: * false otherwise. This provides the functionality for conditionally
092: * displaying a portion of the layout tree.
093: *
094: * @param context The FacesContext
095: * @param component The UIComponent
096: *
097: * @return true if children are to be rendered, false otherwise.
098: */
099: protected boolean encodeThis(FacesContext context,
100: UIComponent component) {
101: PermissionChecker checker = new PermissionChecker(this ,
102: component, getCondition());
103: // return checker.evaluate();
104: return checker.hasPermission();
105: }
106:
107: private String _condition = null;
108: }
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