org.eclipse.jface.snippets.viewers.Snippet062TextAndDialogCellEditor.java Source code

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Here is the source code for org.eclipse.jface.snippets.viewers.Snippet062TextAndDialogCellEditor.java

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/*******************************************************************************
 * Copyright (c) 2006, 2014 Eric Rizzo 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:
 *     Eric Rizzo - initial implementation
 *     Lars Vogel (lars.vogel@gmail.com) - Bug 413427
 *     Simon Scholz <simon.scholz@vogella.com> - Bug 442343
 *******************************************************************************/

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.EditingSupport;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TableViewerColumn;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.jface.viewers.ViewerCell;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * Demonstrates usage of {@link TextAndDialogCellEditor}. The email column uses the
 * TextAndDialogCellEditor; othe columns use ordinary {@link TextCellEditor}s.
 *
 * @author Eric Rizzo
 *
 */
public class Snippet062TextAndDialogCellEditor {

    public class Person {
        public String givenname;
        public String surname;
        public String email;

        public Person(String givenname, String surname, String email) {
            this.givenname = givenname;
            this.surname = surname;
            this.email = email;
        }

        @Override
        public String toString() {
            return '[' + givenname + ' ' + surname + ' ' + email + ']';
        }
    }

    protected abstract class AbstractEditingSupport extends EditingSupport {
        private CellEditor editor;

        public AbstractEditingSupport(TableViewer viewer, CellEditor anEditor) {
            super(viewer);
            this.editor = anEditor;
        }

        @Override
        protected boolean canEdit(Object element) {
            return editor != null;
        }

        @Override
        protected CellEditor getCellEditor(Object element) {
            return editor;
        }

        @Override
        protected void setValue(Object element, Object value) {
            doSetValue(element, value);
            getViewer().update(element, null);
        }

        protected abstract void doSetValue(Object element, Object value);
    }

    public Snippet062TextAndDialogCellEditor(Shell shell) {
        TableViewer v = new TableViewer(shell, SWT.BORDER | SWT.FULL_SELECTION);
        v.setContentProvider(ArrayContentProvider.getInstance());

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

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

        column.setEditingSupport(new AbstractEditingSupport(v, new TextCellEditor(v.getTable())) {

            @Override
            protected Object getValue(Object element) {
                return ((Person) element).givenname;
            }

            @Override
            protected void doSetValue(Object element, Object value) {
                ((Person) element).givenname = value.toString();
            }

        });

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

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

        });

        column.setEditingSupport(new AbstractEditingSupport(v, new TextCellEditor(v.getTable())) {
            @Override
            protected Object getValue(Object element) {
                return ((Person) element).surname;
            }

            @Override
            protected void doSetValue(Object element, Object value) {
                ((Person) element).surname = value.toString();
            }

        });

        column = new TableViewerColumn(v, SWT.NONE);
        column.getColumn().setWidth(200);
        column.getColumn().setText("E-Mail");
        column.getColumn().setMoveable(true);
        column.setLabelProvider(new ColumnLabelProvider() {
            @Override
            public String getText(Object element) {
                return ((Person) element).email;
            }

        });

        TextAndDialogCellEditor cellEditor = new TextAndDialogCellEditor(v.getTable());
        cellEditor.setDialogMessage("Enter email address");
        column.setEditingSupport(new AbstractEditingSupport(v, cellEditor) {

            @Override
            protected Object getValue(Object element) {
                return ((Person) element).email;
            }

            @Override
            protected void doSetValue(Object element, Object value) {
                ((Person) element).email = value.toString();
            }

            // Print out the model after each edit to verify its values are updated correctly
            @Override
            protected void saveCellEditorValue(CellEditor cellEditor, ViewerCell cell) {
                super.saveCellEditorValue(cellEditor, cell);
                System.out.println(cell.getElement());
            }
        });

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

    private Person[] createModel() {
        Person[] elements = new Person[4];
        elements[0] = new Person("Tom", "Schindl", "tom.schindl@bestsolution.at");
        elements[1] = new Person("Boris", "Bokowski", "Boris_Bokowski@ca.ibm.com");
        elements[2] = new Person("Tod", "Creasey", "Tod_Creasey@ca.ibm.com");
        elements[3] = new Person("Wayne", "Beaton", "wayne@eclipse.org");

        return elements;
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        Display display = new Display();

        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());
        new Snippet062TextAndDialogCellEditor(shell);
        shell.open();

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

        display.dispose();

    }

}