sortablemodelexample.java

实现Table的很多功能 具有类似Excel的特征

/*
 * Copyright (C) 2004 by Friederich Kupzog Elektronik & Software
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 */
package de.kupzog.examples;

import java.util.HashMap;
import java.util.Random;

import org.eclipse.swt.graphics.Point;

import de.kupzog.ktable.KTableCellEditor;
import de.kupzog.ktable.KTableCellRenderer;
import de.kupzog.ktable.KTableSortedModel;
import de.kupzog.ktable.renderers.DefaultCellRenderer;
import de.kupzog.ktable.renderers.FixedCellRenderer;

/**
 * Shows how to create a table model that allows sorting the table!
 * Also demonstrates:
 *  - How the sorting works when spanned table cells exist (they get "unspanned" ;-)
 *  - Shows that is it possible to fix also body cells (@see de.kupzog.ktable.KTableModel#getFixedSelectableRowCount())
 *  
 * @author Lorenz Maierhofer <[e-mail]>
 */
public class SortableModelExample extends KTableSortedModel {

    private Random rand = new Random();
    private HashMap content = new HashMap();
    
    private KTableCellRenderer m_FixedRenderer = 
        new FixedCellRenderer(FixedCellRenderer.STYLE_PUSH | 
            FixedCellRenderer.INDICATION_SORT | 
            FixedCellRenderer.INDICATION_FOCUS |
            FixedCellRenderer.INDICATION_CLICKED);
    
    private KTableCellRenderer m_DefaultRenderer = 
        new DefaultCellRenderer(0);
    
    /**
     * Initialize the underlying model
     */
    public SortableModelExample() {
        // before initializing, you probably have to set some member values
        // to make all model getter methods work properly.
        initialize();
    }
    
    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableDefaultModel#doGetContentAt(int, int)
     */
    public Object doGetContentAt(int col, int row) {
        String c = (String)content.get(col+"/"+row);
        if (c==null) {
            c = rand.nextInt(100)+" ("+col+"/"+row+")";
            content.put(col+"/"+row, c);
        }
        return c;
    }
    
    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableDefaultModel#doGetCellRenderer(int, int)
     */
    public KTableCellRenderer doGetCellRenderer(int col, int row) {
        if (isHeaderCell(col, row))
            return m_FixedRenderer;
        
        return m_DefaultRenderer;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableDefaultModel#doGetCellEditor(int, int)
     */
    public KTableCellEditor doGetCellEditor(int col, int row) {
        // no celleditors:
        return null;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableDefaultModel#doSetContentAt(int, int, java.lang.Object)
     */
    public void doSetContentAt(int col, int row, Object value) {
        // no editors, so not needed.
    }
    
    /** 
     * Implement also cell spans so that it can be demonstrated how
     * the sorting algorithm works in this case: 
     * @see de.kupzog.ktable.KTableDefaultModel#doBelongsToCell(int, int)
     */
    public Point doBelongsToCell(int col, int row) {
        if ((col==2 || col==3)&& !isFixedCell(col, row)) {
            int newRow = row;
            if ((row-getFixedRowCount())%2==1)
                newRow--;
            return new Point(2, newRow);
        }
        return new Point(col,row);
    }
    
    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableDefaultModel#getInitialColumnWidth(int)
     */
    public int getInitialColumnWidth(int column) {
        return 125;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableDefaultModel#getInitialRowHeight(int)
     */
    public int getInitialRowHeight(int row ) {
        return 18;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getRowCount()
     */
    public int doGetRowCount() {
       return 1000+getFixedRowCount();
    }
    
    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getColumnCount()
     */
    public int doGetColumnCount() {
        return 1000+getFixedColumnCount();
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getFixedRowCount()
     */
    public int getFixedHeaderRowCount() {
        return 1;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getFixedColumnCount()
     */
    public int getFixedHeaderColumnCount() {
        return 1;
    }
    
    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getFixedSelectableRowCount()
     */
    public int getFixedSelectableRowCount() {
        return 0;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getFixedSelectableColumnCount()
     */
    public int getFixedSelectableColumnCount() {
        return 1;
    }


    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#isColumnResizable(int)
     */
    public boolean isColumnResizable(int col) {
        return true;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getFirstRowHeight()
     */
    public int getInitialFirstRowHeight() {
        return 22;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#isRowResizable()
     */
    public boolean isRowResizable(int row) {
       return true;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableModel#getRowHeightMinimum()
     */
    public int getRowHeightMinimum() {
       return 18;
    }

    /* (non-Javadoc)
     * @see de.kupzog.ktable.KTableDefaultModel#doGetTooltipAt(int, int)
     */
    public String doGetTooltipAt(int col, int row) {
        return "Tooltip for cell: "+col+"/"+row;
    }
}