com.exmaple.e4.tableFunctionality.edit.Snippet027ComboBoxCellEditors.java Source code

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Here is the source code for com.exmaple.e4.tableFunctionality.edit.Snippet027ComboBoxCellEditors.java

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/*******************************************************************************
 * Copyright (c) 2006, 2014 Tom Schindl and others.
 * 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
 *
 * Contributors:
 *     Tom Schindl - initial API and implementation
 *     Dinko Ivanov - bug 164365
 *     Jeanderson Candido <http://jeandersonbc.github.io> - Bug 414565
 *******************************************************************************/

package com.exmaple.e4.tableFunctionality.edit;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ComboBoxCellEditor;
import org.eclipse.jface.viewers.ICellModifier;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

/**
 * This snippet represents usage of the ComboBoxCell-Editor
 *
 * @author Tom Schindl <tom.schindl@bestsolution.at>
 *
 */
public class Snippet027ComboBoxCellEditors {
    private class MyCellModifier implements ICellModifier {

        private TableViewer viewer;

        public MyCellModifier(TableViewer viewer) {
            this.viewer = viewer;
        }

        @Override
        public boolean canModify(Object element, String property) {
            return true;
        }

        @Override
        public Object getValue(Object element, String property) {
            // We need to calculate back to the index
            return new Integer(((MyModel) element).counter / 10);
        }

        @Override
        public void modify(Object element, String property, Object value) {
            TableItem item = (TableItem) element;
            // We get the index and need to calculate the real value
            ((MyModel) item.getData()).counter = ((Integer) value).intValue() * 10;
            viewer.update(item.getData(), null);
        }
    }

    public class MyModel {
        public int counter;

        public MyModel(int counter) {
            this.counter = counter;
        }

        @Override
        public String toString() {
            return "Item " + this.counter;
        }
    }

    public Snippet027ComboBoxCellEditors(Shell shell) {
        final Table table = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
        final TableViewer v = new TableViewer(table);
        final MyCellModifier modifier = new MyCellModifier(v);

        TableColumn column = new TableColumn(table, SWT.NONE);
        column.setWidth(200);

        v.setLabelProvider(new LabelProvider());
        v.setContentProvider(ArrayContentProvider.getInstance());
        v.setCellModifier(modifier);
        v.setColumnProperties(new String[] { "column1" });
        v.setCellEditors(new CellEditor[] { new ComboBoxCellEditor(v.getTable(), new String[] { "Zero", "Ten",
                "Twenty", "Thirty", "Fourty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" }) });

        v.setInput(createModel());
        v.getTable().setLinesVisible(true);
    }

    private List<MyModel> createModel() {
        List<MyModel> elements = new ArrayList<MyModel>();

        for (int i = 0; i < 10; i++) {
            elements.add(new MyModel(i * 10));
        }
        return elements;
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());
        new Snippet027ComboBoxCellEditors(shell);
        shell.open();

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }

}