001    package org.apache.myfaces.tobago.event;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one or more
005     * contributor license agreements.  See the NOTICE file distributed with
006     * this work for additional information regarding copyright ownership.
007     * The ASF licenses this file to You under the Apache License, Version 2.0
008     * (the "License"); you may not use this file except in compliance with
009     * the License.  You may obtain a copy of the License at
010     *
011     *      http://www.apache.org/licenses/LICENSE-2.0
012     *
013     * Unless required by applicable law or agreed to in writing, software
014     * distributed under the License is distributed on an "AS IS" BASIS,
015     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016     * See the License for the specific language governing permissions and
017     * limitations under the License.
018     */
019    
020    import org.apache.myfaces.tobago.internal.util.FindComponentUtils;
021    import org.slf4j.Logger;
022    import org.slf4j.LoggerFactory;
023    
024    import javax.el.ValueExpression;
025    import javax.faces.component.StateHolder;
026    import javax.faces.component.UIComponent;
027    import javax.faces.component.UIComponentBase;
028    import javax.faces.context.FacesContext;
029    import javax.faces.event.ActionEvent;
030    
031    
032    public class ValueExpressionPopupActionListener extends AbstractPopupActionListener implements StateHolder {
033    
034      private static final Logger LOG = LoggerFactory.getLogger(ValueExpressionPopupActionListener.class);
035    
036      private ValueExpression popupIdExpression;
037    
038      public ValueExpressionPopupActionListener(Object expression) {
039        popupIdExpression = (ValueExpression) expression;
040      }
041    
042      @Override
043      protected UIComponent getPopup(ActionEvent actionEvent) {
044        String id = (String) popupIdExpression.getValue(FacesContext.getCurrentInstance().getELContext());
045        UIComponent popup = FindComponentUtils.findComponent(actionEvent.getComponent(), id);
046        if (popup == null) {
047          LOG.error("Found no popup for \""
048              + popupIdExpression.getExpressionString() + "\" := \""
049              + id + "\"! Search base componentId : "
050              + actionEvent.getComponent().getClientId(FacesContext.getCurrentInstance()));
051        }
052        return popup;
053      }
054    
055      public boolean isTransient() {
056        return false;
057      }
058    
059      public void restoreState(FacesContext context, Object state) {
060        Object[] values = (Object[]) state;
061        popupIdExpression = (ValueExpression) UIComponentBase.restoreAttachedState(context, values[0]);
062      }
063    
064      public Object saveState(FacesContext context) {
065        Object[] values = new Object[1];
066        values[0] = UIComponentBase.saveAttachedState(context, popupIdExpression);
067        return values;
068      }
069    
070    
071      public void setTransient(boolean newTransientValue) {
072        // ignore
073      }
074    }