/*

  * Copyright 2004-2008 the Seasar Foundation and the Others.

  *

  * 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.

  */

 package org.seasar.eclipse.common.viewer;

 import java.util.ArrayList;

 import java.util.List;

 import org.eclipse.jface.viewers.CellEditor;

 import org.eclipse.jface.viewers.ICellModifier;

 import org.eclipse.jface.viewers.ITableLabelProvider;

 import org.eclipse.jface.viewers.LabelProvider;

 import org.eclipse.jface.viewers.TableViewer;

 import org.eclipse.swt.graphics.Image;

 import org.eclipse.swt.widgets.Item;

 import org.seasar.framework.util.ArrayMap;

 /**

  * @author taichi

  * @see org.seasar.eclipse.common.viewer.ColumnDescriptor

  */

 public class TableProvider extends LabelProvider implements

         ITableLabelProvider, ICellModifier {

     private ArrayMap columnDescs;

     private TableViewer viewer;

     public TableProvider(TableViewer viewer, ColumnDescriptor[] cds) {

         this.viewer = viewer;

         this.columnDescs = new ArrayMap(cds.length);

         List<String> keys = new ArrayList<String>(cds.length);

         List<CellEditor> editors = new ArrayList<CellEditor>(cds.length);

         for (ColumnDescriptor cd : cds) {

             String name = cd.getName();

             if (columnDescs.containsKey(name)) {

                 name = name + "@" + System.identityHashCode(cd);

             }

             this.columnDescs.put(name, cd);

             keys.add(name);

             editors.add(cd.getCellEditor());

         }

         this.viewer.setColumnProperties(keys.toArray(new String[keys

                 .size()]));

         this.viewer.setCellEditors(editors

                 .toArray(new CellEditor[editors.size()]));

         this.viewer.setCellModifier(this);

     }

     protected ColumnDescriptor getDescriptor(String name) {

         return (ColumnDescriptor) this.columnDescs.get(name);

     }

     protected ColumnDescriptor getDescriptor(int index) {

         return (ColumnDescriptor) this.columnDescs.get(index);

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object,

      *      int)

      */

     public Image getColumnImage(Object element, int columnIndex) {

         ColumnDescriptor cd = getDescriptor(columnIndex);

         return cd != null ? cd.getImage(element) : null;

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object,

      *      int)

      */

     public String getColumnText(Object element, int columnIndex) {

         ColumnDescriptor cd = getDescriptor(columnIndex);

         return cd != null ? cd.getText(element) : "";

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object,

      *      java.lang.String)

      */

     public boolean canModify(Object element, String property) {

         ColumnDescriptor cd = getDescriptor(property);

         return cd != null ? cd.canModify() : false;

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object,

      *      java.lang.String)

      */

     public Object getValue(Object element, String property) {

         ColumnDescriptor cd = getDescriptor(property);

         return cd != null ? cd.getValue(element) : null;

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object,

      *      java.lang.String, java.lang.Object)

      */

     public void modify(Object element, String property, Object value) {

         if (element instanceof Item) {

             element = ((Item) element).getData();

         }

         ColumnDescriptor cd = getDescriptor(property);

         if (cd != null) {

             cd.setValue(element, value);

             this.viewer.update(element, new String[] { property });

         }

     }

 }