org.eclipse.jface.snippets.viewers.Snippet035TableCursorCellHighlighter.java Source code

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Here is the source code for org.eclipse.jface.snippets.viewers.Snippet035TableCursorCellHighlighter.java

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/*******************************************************************************
 * 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
 *     Lars Vogel (lars.vogel@gmail.com) - Bug 413427
 *     Jeanderson Candido <http://jeandersonbc.github.io> - Bug 414565
 *     Simon Scholz <simon.scholz@vogella.com> - Bug 442747
 *******************************************************************************/

package org.eclipse.jface.snippets.viewers;

import org.eclipse.jface.resource.FontRegistry;
import org.eclipse.jface.resource.JFaceResources;
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.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * Example usage of none mandatory interfaces of ITableFontProvider and
 * ITableColorProvider
 *
 */
public class Snippet035TableCursorCellHighlighter {

    public static boolean flag = true;

    private class MyModel {
        public int counter;

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

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

    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) {

        }

    }

    private class MyColumnLabelProvider extends ColumnLabelProvider {
        FontRegistry registry = JFaceResources.getFontRegistry();
        private String columnIndex;

        public MyColumnLabelProvider(String columnIndex) {
            this.columnIndex = columnIndex;
        }

        @Override
        public Font getFont(Object element) {
            if (((MyModel) element).counter % 2 == 0) {
                return registry.getBold(Display.getCurrent().getSystemFont().getFontData()[0].getName());
            }
            return null;
        }

        @Override
        public Color getBackground(Object element) {
            if (((MyModel) element).counter % 2 == 0) {
                return Display.getCurrent().getSystemColor(SWT.COLOR_RED);
            }
            return null;
        }

        @Override
        public Color getForeground(Object element) {
            if (((MyModel) element).counter % 2 == 1) {
                return Display.getCurrent().getSystemColor(SWT.COLOR_RED);
            }
            return null;
        }

        @Override
        public String getText(Object element) {
            return "Column " + columnIndex + " => " + element;
        }
    }

    public Snippet035TableCursorCellHighlighter(Shell shell) {
        int style = SWT.BORDER | SWT.HIDE_SELECTION | SWT.FULL_SELECTION;
        final TableViewer v = new TableViewer(shell, style);
        v.setContentProvider(ArrayContentProvider.getInstance());

        TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(v,
                new CursorCellHighlighter(v, new TableCursor(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;
            }
        };

        int features = ColumnViewerEditor.TABBING_HORIZONTAL | ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
                | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION;

        TableViewerEditor.create(v, focusCellManager, actSupport, features);

        TableViewerColumn viewerColumn = new TableViewerColumn(v, SWT.NONE);
        viewerColumn.getColumn().setWidth(200);
        viewerColumn.getColumn().setText("Column 1");
        viewerColumn.setEditingSupport(new MyEditingSupport(v, "1"));
        viewerColumn.setLabelProvider(new MyColumnLabelProvider("1"));

        viewerColumn = new TableViewerColumn(v, SWT.NONE);
        viewerColumn.getColumn().setWidth(200);
        viewerColumn.getColumn().setText("Column 2");
        viewerColumn.setEditingSupport(new MyEditingSupport(v, "2"));
        viewerColumn.setLabelProvider(new MyColumnLabelProvider("2"));

        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 < elements.length; 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 Snippet035TableCursorCellHighlighter(shell);
        shell.open();

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

    }

}