net.karlmartens.ui.viewer.GridChooserViewerTest.java Source code

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Here is the source code for net.karlmartens.ui.viewer.GridChooserViewerTest.java

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/**
 *   Copyright 2010,2011 Karl Martens
 *
 *   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.
 *
 *   net.karlmartens.ui, is a library of UI widgets
 */
package net.karlmartens.ui.viewer;

import net.karlmartens.platform.util.NullSafe;
import net.karlmartens.platform.util.NumberStringComparator;
import net.karlmartens.ui.widget.GridChooserColumnWeightedResize;

import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CellEditor;
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.ISelectionChangedListener;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public final class GridChooserViewerTest {

    public static void main(String[] args) throws Exception {
        final Shell shell = new Shell();
        final Display display = shell.getDisplay();
        shell.setLayout(new FillLayout());

        final GridChooserViewer viewer = new GridChooserViewer(shell);
        viewer.setContentProvider(new ArrayContentProvider());
        viewer.setLabelProvider(new TestColumnLabelProvider(0));
        viewer.setComparator(new ViewerComparator(new NumberStringComparator()));

        viewer.getControl().setHeaderVisible(true);

        viewer.addSelectionChangedListener(new ISelectionChangedListener() {
            @Override
            public void selectionChanged(SelectionChangedEvent event) {
                System.out.println("Selection changed event");
            }
        });

        final ColumnViewerEditorActivationStrategy activationStrategy = new ColumnViewerEditorActivationStrategy(
                viewer) {
            @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;
            }
        };

        GridChooserViewerEditor.create(viewer, activationStrategy,
                ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
                        | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);

        final GridChooserViewerColumn c1 = new GridChooserViewerColumn(viewer, SWT.NONE);
        c1.setLabelProvider(new TestColumnLabelProvider(0));
        c1.getColumn().setText("Test");
        c1.getColumn().setMoveable(true);

        final GridChooserViewerColumn c2 = new GridChooserViewerColumn(viewer, SWT.NONE);
        c2.setLabelProvider(new TestColumnLabelProvider(1));
        c2.setEditingSupport(new TextEditingSupport(viewer, 1));
        c2.getColumn().setText("Test 2");
        c2.getColumn().setMoveable(true);

        new GridChooserColumnWeightedResize(viewer.getControl(), new int[] { 1, 1 });

        viewer.setInput(new String[][] { { "Andrew", "2", "3" }, //
                { "Bill", "2", "3" }, //
                { "C", "2", "3" }, //
                { "bob", "2", "3" }, //
                { "1", "2", "3" }, //
                { "11", "2", "3" }, //
                { "2", "2", "3" }, //
                { "1.1", "2", "3" } //
        });

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

    private static class TextEditingSupport extends EditingSupport {

        private final GridChooserViewer _viewer;
        private final int _index;
        private TextCellEditor _cellEditor;

        public TextEditingSupport(GridChooserViewer viewer, int index) {
            super(viewer);
            _viewer = viewer;
            _index = index;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            if (_cellEditor == null) {
                _cellEditor = new TextCellEditor(_viewer.getControl());
            }
            return _cellEditor;
        }

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

        @Override
        protected Object getValue(Object element) {
            final String[] data = (String[]) element;
            return data[_index];
        }

        @Override
        protected void setValue(Object element, Object value) {
            final String[] data = (String[]) element;
            data[_index] = NullSafe.toString(value);
        }
    }
}