package net.sf.logdistiller.gui;
   
   /*
    * Licensed 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.
   */
  
  import java.awt.Component;
  import java.awt.Container;
  import java.awt.Dimension;
  import java.awt.LayoutManager2;
  import java.util.HashMap;
  import java.util.Map;
  
  import com.jgoodies.forms.layout.CellConstraints;
  import com.jgoodies.forms.layout.FormLayout;
  
  /**
   * This class is a simplified version of FormLayoutMaker's equivalent class, in a dream to avoid need for Java 1.4 at
   * runtime.
   */
  public class SimpleContainerLayout
      implements LayoutManager2
  {
      private final Map<String, CellConstraints> componentConstraints = new HashMap<String, CellConstraints>();
  
      private final Map<Component, String> componentsToNames = new HashMap<Component, String>();
  
      private final FormLayout formLayout;
  
      private final String name;
  
      public SimpleContainerLayout( String name, String columnSpecs, String rowSpecs )
      {
          this.name = name;
          formLayout = new FormLayout( columnSpecs, rowSpecs );
      }
  
      public String getName()
      {
          return this.name;
      }
  
      public void addCellConstraints( String name, CellConstraints constraints )
      {
          componentConstraints.put( name, constraints );
      }
  
      // interface for LayoutManager2
      public void addLayoutComponent( String name, Component comp )
      {
          throw new RuntimeException(
                                      "This method should not be called.  Call addLayoutComponent(Component, Object) instead" );
      }
  
      public float getLayoutAlignmentX( Container target )
      {
          return formLayout.getLayoutAlignmentX( target );
      }
  
      public float getLayoutAlignmentY( Container target )
      {
          return formLayout.getLayoutAlignmentY( target );
      }
  
      public void invalidateLayout( Container target )
      {
          formLayout.invalidateLayout( target );
      }
  
      public void layoutContainer( Container parent )
      {
          formLayout.layoutContainer( parent );
      }
  
      public Dimension maximumLayoutSize( Container target )
      {
          return formLayout.maximumLayoutSize( target );
      }
  
      public Dimension minimumLayoutSize( Container parent )
      {
          return formLayout.minimumLayoutSize( parent );
      }
  
      public Dimension preferredLayoutSize( Container parent )
      {
          return formLayout.preferredLayoutSize( parent );
      }
  
     public void removeLayoutComponent( Component comp )
     {
         String componentName = componentsToNames.get( comp );
         componentsToNames.remove( comp );
         componentConstraints.remove( componentName );
         formLayout.removeLayoutComponent( comp );
     }
 
     public void addLayoutComponent( Component comp, Object constraints )
     {
         String componentName = (String) constraints;
         CellConstraints cellConstraints = (CellConstraints) componentConstraints.get( componentName );
         if ( cellConstraints == null )
         {
             System.err.println( "Warning: " + componentName + " was added without constraints" );
             cellConstraints = new CellConstraints();
             componentConstraints.put( componentName, cellConstraints );
             comp.setVisible( false );
         }
         componentsToNames.put( comp, componentName );
         formLayout.addLayoutComponent( comp, cellConstraints );
     }
 }