org.eclipse.jface.snippets.viewers.Snippet034CellEditorPerRow.java Source code

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Here is the source code for org.eclipse.jface.snippets.viewers.Snippet034CellEditorPerRow.java

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/*******************************************************************************
 * Copyright (c) 2007, 2016 Tom Schindl and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     Tom Schindl<tom.schindl@bestsolution.at> - initial API and implementation
 *     Wayne Beaton - bug 185540
 *     Lars Vogel <Lars.Vogel@vogella.com> - Bug 413427, 475361, 489234
 *     Jeanderson Candido <http://jeandersonbc.github.io> - Bug 414565
 *******************************************************************************/

package org.eclipse.jface.snippets.viewers;

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.ColumnLabelProvider;
import org.eclipse.jface.viewers.ComboBoxCellEditor;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
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;

/**
 * Snippet to present editor different CellEditors within one column in 3.2
 * for 3.3 and above please use the new EditingSupport class
 *
 * @author Tom Schindl &lt;tom.schindl@bestsolution.at&gt;
 *
 */
public class Snippet034CellEditorPerRow {
    private class MyEditingSupport extends EditingSupport {
        private CellEditor textEditor;

        private CellEditor dropDownEditor;

        public MyEditingSupport(TableViewer viewer) {
            super(viewer);
            textEditor = new TextCellEditor(viewer.getTable());

            String[] elements = new String[10];

            for (int i = 0; i < 10; i++) {
                elements[i] = i + "";
            }

            dropDownEditor = new ComboBoxCellEditor(viewer.getTable(), elements);
        }

        @Override
        protected boolean canEdit(Object element) {
            return ((MyModel) element).counter % 2 == 0;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            if (element instanceof MyModel2) {
                return dropDownEditor;
            } else {
                return textEditor;
            }
        }

        @Override
        protected Object getValue(Object element) {
            if (element instanceof MyModel2) {
                return Integer.valueOf(((MyModel) element).counter);
            } else {
                return ((MyModel) element).counter + "";
            }
        }

        @Override
        protected void setValue(Object element, Object value) {
            ((MyModel) element).counter = Integer.parseInt(value.toString());
            getViewer().update(element, null);
        }

    }

    public class MyModel {
        public int counter;

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

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

    public class MyModel2 extends MyModel {

        public MyModel2(int counter) {
            super(counter);
        }

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

    public Snippet034CellEditorPerRow(Shell shell) {
        final Table table = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);

        final TableViewer v = new TableViewer(table);
        v.getTable().setLinesVisible(true);

        TableViewerColumn column = new TableViewerColumn(v, SWT.NONE);
        column.getColumn().setWidth(200);
        column.getColumn().setText("Column 1");
        column.setLabelProvider(new ColumnLabelProvider() {

            @Override
            public String getText(Object element) {
                return element.toString();
            }

        });

        column.setEditingSupport(new MyEditingSupport(v));
        v.setContentProvider(ArrayContentProvider.getInstance());
        v.setInput(createModel());
        v.getTable().setHeaderVisible(true);
    }

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

        for (int i = 0; i < 10; i++) {
            elements.add(new MyModel(i));
        }
        for (int i = 0; i < 10; i++) {
            elements.add(new MyModel2(i));
        }
        return elements;
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());
        new Snippet034CellEditorPerRow(shell);
        shell.open();

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

        display.dispose();

    }

}