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Groovy example source code file (DefaultTableModel.java)

This example Groovy source code file (DefaultTableModel.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

class, closure, defaulttablecolumn, defaulttablecolumn, defaulttablemodel, jtable, list, list, mytablecolumnmodel, object, object, propertymodel, string, table, util, valuemodel, valuemodel

The Groovy DefaultTableModel.java source code

/*
 * Copyright 2003-2008 the original author or authors.
 *
 * 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 groovy.model;

import groovy.lang.Closure;
import org.codehaus.groovy.runtime.InvokerHelper;

import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
import java.util.Collections;
import java.util.List;

/**
 * A default table model made up of PropertyModels on a Value model.
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 12913 $
 */
public class DefaultTableModel extends AbstractTableModel {

    private ValueModel rowModel;
    private ValueModel rowsModel;
    private MyTableColumnModel columnModel = new MyTableColumnModel();

    public DefaultTableModel(ValueModel rowsModel) {
        this(rowsModel, new ValueHolder());
    }
    
    public DefaultTableModel(ValueModel rowsModel, ValueModel rowModel) {
        this.rowModel = rowModel;
        this.rowsModel = rowsModel;
    }
    
    /**
     * @return the column definitions.
     */
    public List getColumnList() {
        return columnModel.getColumnList();
    }

    public TableColumnModel getColumnModel() {
        return columnModel;
    }
    
    /**
     * Adds a property model column to the table
     */
    public DefaultTableColumn addPropertyColumn(Object headerValue, String property, Class type) {
        return addColumn(headerValue, property, new PropertyModel(rowModel, property, type));
    }
    
    /**
     * Adds a property model column to the table
     */
    public DefaultTableColumn addPropertyColumn(Object headerValue, String property, Class type, boolean editable) {
        return addColumn(headerValue, property, new PropertyModel(rowModel, property, type, editable));
    }
    
    /**
     * Adds a closure based column to the table
     */
    public DefaultTableColumn addClosureColumn(Object headerValue, Closure readClosure, Closure writeClosure, Class type) {
        return addColumn(headerValue, new ClosureModel(rowModel, readClosure, writeClosure, type));
    }
    
    public DefaultTableColumn addColumn(Object headerValue, ValueModel columnValueModel) {
        return addColumn(headerValue, headerValue, columnValueModel);
    }

    public DefaultTableColumn addColumn(Object headerValue, Object identifier, ValueModel columnValueModel) {
        DefaultTableColumn answer = new DefaultTableColumn(headerValue, identifier, columnValueModel);
        addColumn(answer);
        return answer;
    }
    
    /**
     * Adds a new column definition to the table
     */
    public void addColumn(DefaultTableColumn column) {
        column.setModelIndex(columnModel.getColumnCount());
        columnModel.addColumn(column);
    }
    
    /**
     * Removes a column definition from the table
     */
    public void removeColumn(DefaultTableColumn column) {
        columnModel.removeColumn(column);
    }
    
    public int getRowCount() {
        return getRows().size();
    }

    public int getColumnCount() {
        return columnModel.getColumnCount();
    }
    
    public String getColumnName(int columnIndex) {
        String answer = null;
        if (columnIndex < 0 || columnIndex >= columnModel.getColumnCount()) {
            return answer;
        }
        Object value = columnModel.getColumn(columnIndex).getHeaderValue();
        if (value != null) {
            return value.toString();
        }
        return answer;
    }

    public Class getColumnClass(int columnIndex) {
        return getColumnModel(columnIndex).getType();
    }

    public boolean isCellEditable(int rowIndex, int columnIndex) {
        return getColumnModel(columnIndex).isEditable();
    }

    public Object getValueAt(int rowIndex, int columnIndex) {
        List rows = getRows();
        Object answer = null;
        if (rowIndex < 0 || rowIndex >= rows.size()) {
            return answer;
        }
        if (columnIndex < 0 || columnIndex >= columnModel.getColumnCount()) {
            return answer;
        }
        Object row = getRows().get(rowIndex);
        rowModel.setValue(row);
        DefaultTableColumn column = (DefaultTableColumn) columnModel.getColumn(columnIndex);
        if (row == null || column == null) {
            return answer;
        }
        return column.getValue(row, rowIndex, columnIndex);
    }

    public void setValueAt(Object value, int rowIndex, int columnIndex) {
        List rows = getRows();
        if (rowIndex < 0 || rowIndex >= rows.size()) {
            return;
        }
        if (columnIndex < 0 || columnIndex >= columnModel.getColumnCount()) {
            return;
        }
        Object row = getRows().get(rowIndex);
        rowModel.setValue(row);
        DefaultTableColumn column = (DefaultTableColumn) columnModel.getColumn(columnIndex);
        if (row == null || column == null) {
            return;
        }
        column.setValue(row, value, rowIndex, columnIndex);
    }

    protected ValueModel getColumnModel(int columnIndex) {
        DefaultTableColumn column = (DefaultTableColumn) columnModel.getColumn(columnIndex);
        return column.getValueModel();
    }

    protected List getRows() {
        Object value = rowsModel.getValue();
        if (value == null) {
            return Collections.EMPTY_LIST;
        }
        return InvokerHelper.asList(value);
    }

    protected static class MyTableColumnModel extends DefaultTableColumnModel {
        public List getColumnList() {
            return tableColumns;
        }

        public void removeColumn(TableColumn column) {
            super.removeColumn(column);
            renumberTableColumns();
        }

        public void moveColumn(int columnIndex, int newIndex) {
            super.moveColumn(columnIndex, newIndex);
            renumberTableColumns();
        }

        public void renumberTableColumns() {
            for (int i = tableColumns.size() - 1; i >= 0; i--) {
                ((DefaultTableColumn)tableColumns.get(i)).setModelIndex(i);
            }
        }

    }
    
    public ValueModel getRowModel() {
        return rowModel;
    }

    public ValueModel getRowsModel() {
        return rowsModel;
    }


}

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