Java tutorial
/******************************************************************************* * Copyright (c) 2004, 2007 Boeing. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Boeing - initial API and implementation *******************************************************************************/ package org.eclipse.osee.framework.ui.skynet.widgets.dialog; import java.util.ArrayList; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.osee.framework.core.data.IOseeBranch; import org.eclipse.osee.framework.skynet.core.artifact.BranchManager; import org.eclipse.osee.framework.ui.plugin.util.IShellCloseEvent; import org.eclipse.osee.framework.ui.skynet.branch.BranchSelectComposite; import org.eclipse.osee.framework.ui.skynet.widgets.XText; import org.eclipse.osee.framework.ui.swt.Displays; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.events.MouseMoveListener; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; /** * @author Donald G. Dunne */ public class EntryDialogWithBranchSelect extends MessageDialog { XText text; Composite c; String entryText = ""; String validationRegularExpression = null; String validationErrorString = ""; Button ok; MouseMoveListener listener; Label errorLabel; BranchSelectComposite branchSelect; boolean fillVertically = false; private final List<IShellCloseEvent> closeEventListeners = new ArrayList<IShellCloseEvent>(); public EntryDialogWithBranchSelect(String dialogTitle, String dialogMessage) { super(Displays.getActiveShell(), dialogTitle, null, dialogMessage, MessageDialog.QUESTION, new String[] { "OK", "Cancel" }, 0); } public EntryDialogWithBranchSelect(Shell parentShell, String dialogTitle, Image dialogTitleImage, String dialogMessage, int dialogImageType, String[] dialogButtonLabels, int defaultIndex) { super(parentShell, dialogTitle, dialogTitleImage, dialogMessage, dialogImageType, dialogButtonLabels, defaultIndex); } @Override protected Control createCustomArea(Composite parent) { c = new Composite(parent, SWT.NONE); c.setLayout(new GridLayout(2, false)); c.setLayoutData(new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL)); listener = new MouseMoveListener() { @Override public void mouseMove(MouseEvent e) { setInitialButtonState(); } }; c.addMouseMoveListener(listener); // Create error label errorLabel = new Label(c, SWT.NONE); errorLabel.setSize(errorLabel.computeSize(SWT.DEFAULT, SWT.DEFAULT)); errorLabel.setText(""); text = new XText(); text.setFillHorizontally(true); text.setFocus(); text.setDisplayLabel(false); if (!entryText.equals("")) { text.set(entryText); } if (fillVertically) { text.setFillVertically(true); text.setHeight(200); } text.createWidgets(c, 2); ModifyListener modifyListener = new ModifyListener() { @Override public void modifyText(ModifyEvent e) { handleModified(); } }; text.addModifyListener(modifyListener); branchSelect = new BranchSelectComposite(c, SWT.NONE, false); branchSelect.setDefaultSelectedBranch(BranchManager.getLastBranch()); createExtendedArea(c); c.layout(); parent.layout(); return c; } /** * Override to provide other widgets */ protected void createExtendedArea(Composite parent) { // provided for subclass implementation } public void setInitialButtonState() { if (ok == null) { ok = getButton(0); handleModified(); } c.removeMouseMoveListener(listener); } public void handleModified() { if (text != null) { entryText = text.get(); if (text.get().equals("") || !isEntryValid() || branchSelect.getSelectedBranch() == null) { getButton(getDefaultButtonIndex()).setEnabled(false); errorLabel.setText(validationErrorString); errorLabel.update(); c.layout(); } else { getButton(getDefaultButtonIndex()).setEnabled(true); errorLabel.setText(""); errorLabel.update(); c.layout(); } } } public String getEntry() { return entryText; } public void setEntry(String entry) { if (text != null) { text.set(entry); } this.entryText = entry; } public IOseeBranch getBranch() { return branchSelect.getSelectedBranch(); } /** * override this method to make own checks on entry this will be called with every keystroke * * @return true if entry is valid */ public boolean isEntryValid() { if (validationRegularExpression == null) { return true; } // verify title is alpha-numeric with spaces and dashes Matcher m = Pattern.compile(validationRegularExpression).matcher(text.get()); return m.find(); } public void setValidationRegularExpression(String regExp) { validationRegularExpression = regExp; } public void setValidationErrorString(String errorText) { validationErrorString = errorText; } /** * Calling will enable dialog to loose focus */ public void setModeless() { setShellStyle(SWT.DIALOG_TRIM | SWT.MODELESS); setBlockOnOpen(false); } public void setSelectionListener(SelectionListener listener) { for (int i = 0; i < getButtonLabels().length; i++) { Button button = getButton(i); button.addSelectionListener(listener); } } public boolean isFillVertically() { return fillVertically; } public void setFillVertically(boolean fillVertically) { this.fillVertically = fillVertically; } @Override protected void handleShellCloseEvent() { super.handleShellCloseEvent(); for (IShellCloseEvent event : closeEventListeners) { event.onClose(); } } public void addShellCloseEventListeners(IShellCloseEvent event) { closeEventListeners.add(event); } }