source: trunk/EventBenchConsole/src/de/ugoe/cs/eventbench/swt/EditSequenceDialog.java

package de.ugoe.cs.eventbench.swt;

import java.util.SortedSet;

import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;

import de.ugoe.cs.eventbench.data.Event;

public class EditSequenceDialog extends Dialog {

        protected Shell shell;
        private Table table;
        private TableColumn tblclmnEventType;
        private TableColumn tblclmnEventTarget;

        private java.util.List<Event<?>> sequence;
        private SortedSet<String> targets;

        /**
         * Create the dialog.
         * 
         * @param parent
         * @param style
         */
        public EditSequenceDialog(Shell parent, int style, SortedSet<String> targets) {
                super(parent, style);
                setText("SWT Dialog");
                this.targets = targets;
        }

        /**
         * Open the dialog.
         */
        public void open(java.util.List<Event<?>> sequence) {
                this.sequence = sequence;
                createContents();
                shell.open();
                shell.layout();
                Display display = getParent().getDisplay();
                while (!shell.isDisposed()) {
                        if (!display.readAndDispatch()) {
                                display.sleep();
                        }
                }
        }

        /**
         * Create contents of the dialog.
         */
        private void createContents() {
                shell = new Shell(getParent(), SWT.SHELL_TRIM | SWT.BORDER
                                | SWT.APPLICATION_MODAL);
                shell.setSize(450, 300);
                shell.setText(getText());
                shell.setLayout(new GridLayout(3, false));

                table = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
                table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 3, 1));
                table.setHeaderVisible(true);
                table.setLinesVisible(true);

                tblclmnEventType = new TableColumn(table, SWT.NONE);
                tblclmnEventType.setWidth(100);
                tblclmnEventType.setText("Event Type");

                tblclmnEventTarget = new TableColumn(table, SWT.NONE);
                tblclmnEventTarget.setWidth(100);
                tblclmnEventTarget.setText("Event Target");

                // this listener makes the table entries multiline
                Listener paintListener = new Listener() {
                        public void handleEvent(org.eclipse.swt.widgets.Event event) {
                                switch (event.type) {
                                case SWT.MeasureItem: {
                                        TableItem item = (TableItem) event.item;
                                        String text = item.getText(event.index);
                                        Point size = event.gc.textExtent(text);
                                        event.width = size.x;
                                        event.height = Math.max(event.height, size.y);
                                        break;
                                }
                                case SWT.PaintItem: {
                                        TableItem item = (TableItem) event.item;
                                        String text = item.getText(event.index);
                                        Point size = event.gc.textExtent(text);
                                        int offset = event.index == 0 ? Math.max(0,
                                                        (event.height - size.y) / 2) : 0;
                                        event.gc.drawText(text, event.x, event.y + offset, true);
                                        break;
                                }
                                case SWT.EraseItem:
                                        event.detail &= ~SWT.FOREGROUND;
                                        break;
                                default:
                                        break;
                                }
                        }

                };
                table.addListener(SWT.MeasureItem, paintListener);
                table.addListener(SWT.PaintItem, paintListener);
                table.addListener(SWT.EraseItem, paintListener);

                updateTableContents();

                Button btnInsertBefore = new Button(shell, SWT.NONE);
                btnInsertBefore.addSelectionListener(new SelectionAdapter() {
                        @Override
                        public void widgetSelected(SelectionEvent e) {
                                int index = table.getSelectionIndex();
                                if (index == -1) {
                                        MessageBox messageBox = new MessageBox(shell, SWT.ERROR);
                                        messageBox.setMessage("No event selected!");
                                        messageBox.setText("Error");
                                        messageBox.open();
                                } else {
                                        openInsertDialog(index);
                                }
                        }
                });
                btnInsertBefore.setText("Insert Before");

                Button btnInsertAfter = new Button(shell, SWT.NONE);
                btnInsertAfter.addSelectionListener(new SelectionAdapter() {
                        @Override
                        public void widgetSelected(SelectionEvent e) {
                                int index = table.getSelectionIndex();
                                if (index == -1) {
                                        MessageBox messageBox = new MessageBox(shell, SWT.ERROR);
                                        messageBox.setMessage("No event selected!");
                                        messageBox.setText("Error");
                                        messageBox.open();
                                } else {
                                        openInsertDialog(index + 1);
                                }
                        }
                });
                btnInsertAfter.setText("Insert After");

                Button btnClose = new Button(shell, SWT.NONE);
                btnClose.addSelectionListener(new SelectionAdapter() {
                        @Override
                        public void widgetSelected(SelectionEvent e) {
                                shell.dispose();
                        }
                });
                btnClose.setText("Close");

        }

        private void updateTableContents() {
                table.removeAll();
                for (Event<?> event : sequence) {
                        TableItem tableItem = new TableItem(table, SWT.NONE);
                        String target = event.getTarget();
                        if (target != null) {
                                // the target is split into multiple lines, as one line may
                                // only  be 259 characters in tables with Windows
                                target = target.replace("].", "].\n");
                        }
                        tableItem.setText(new String[] { event.getType(), target });
                }
                for (int i = 0; i < table.getColumnCount(); i++) {
                        table.getColumn(i).pack();
                }
        }

        private void openInsertDialog(int position) {
                InsertAssertionDialog insertDialog = new InsertAssertionDialog(shell,
                                SWT.NONE, targets);
                Event<?> event = insertDialog.open();
                if (event != null) {
                        sequence.add(position, event);
                        updateTableContents();
                }
        }

}