org.eclipse.jface.snippets.viewers.Snippet044TableViewerKeyboardEditing.java Source code

Introduction

Here is the source code for org.eclipse.jface.snippets.viewers.Snippet044TableViewerKeyboardEditing.java

Source

/*******************************************************************************
 * Copyright (c) 2006, 2014 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 - initial API and implementation
 *     Simon Scholz <simon.scholz@vogella.com> - Bug 442343, 442747
 *******************************************************************************/

package org.eclipse.jface.snippets.viewers;

import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.ColumnViewerEditor;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent;
import org.eclipse.jface.viewers.ColumnViewerEditorActivationStrategy;
import org.eclipse.jface.viewers.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TableViewerEditor;
import org.eclipse.jface.viewers.TableViewerFocusCellManager;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;

/**
 * Demonstrates how to use keyboard-editing support in a TableViewer
 *
 * @author Tom Schindl &lt;tom.schindl@bestsolution.at&gt;
 *
 */
public class Snippet044TableViewerKeyboardEditing {

    private class MyModel {
        public int counter;

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

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

    private class MyColumnLabelProvider extends ColumnLabelProvider {

        private int columnIndex;
        private Table table;

        public MyColumnLabelProvider(Table table, int columnIndex) {
            this.table = table;
            this.columnIndex = columnIndex;
        }

        @Override
        public String getText(Object element) {
            return "Column " + table.getColumnOrder()[columnIndex] + " => " + element;
        }
    }

    private class MyEditingSupport extends EditingSupport {

        private String property;

        public MyEditingSupport(ColumnViewer viewer, String property) {
            super(viewer);
            this.property = property;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            return new TextCellEditor((Composite) getViewer().getControl());
        }

        @Override
        protected boolean canEdit(Object element) {
            return true;
        }

        @Override
        protected Object getValue(Object element) {
            return "Column " + property + " => " + element;
        }

        @Override
        protected void setValue(Object element, Object value) {

        }

    }

    public Snippet044TableViewerKeyboardEditing(Shell shell) {
        final TableViewer v = new TableViewer(shell, SWT.BORDER | SWT.FULL_SELECTION);
        v.setContentProvider(ArrayContentProvider.getInstance());

        TableViewerColumn viewerColumn = new TableViewerColumn(v, SWT.NONE);
        viewerColumn.getColumn().setWidth(200);
        viewerColumn.getColumn().setText("Column 0");

        viewerColumn.setLabelProvider(new MyColumnLabelProvider(v.getTable(), 0));
        viewerColumn.setEditingSupport(new MyEditingSupport(v, "1"));

        TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(v,
                new FocusBorderCellHighlighter(v));
        ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(v) {
            @Override
            protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
                return event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
                        || event.eventType == ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION
                        || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
                                && event.keyCode == SWT.CR)
                        || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
            }
        };

        TableViewerEditor.create(v, focusCellManager, actSupport,
                ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
                        | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);

        MyModel[] model = createModel();
        v.setInput(model);
        v.getTable().setLinesVisible(true);
        v.getTable().setHeaderVisible(true);
    }

    private MyModel[] createModel() {
        MyModel[] elements = new MyModel[10];

        for (int i = 0; i < 10; i++) {
            elements[i] = new MyModel(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 Snippet044TableViewerKeyboardEditing(shell);
        shell.open();

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

        display.dispose();

    }

}