Java tutorial
/* * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * 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. */ package org.wso2.developerstudio.eclipse.errorreporter.ui.dialogs; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.preference.PreferenceDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Link; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.dialogs.PreferencesUtil; import org.wso2.developerstudio.eclipse.errorreporter.constants.DialogBoxLabels; import org.wso2.developerstudio.eclipse.errorreporter.constants.ProjectConstants; /** * This class creates the Dialog Box to be displayed, when an error occurs, if * the user has not set vales to the mandatory fields in the prefernces Page */ public class EditPreferencesDialog extends TitleAreaDialog { public EditPreferencesDialog(Shell parentShell) { super(parentShell); } @Override public void create() { super.create(); setTitle(DialogBoxLabels.EDIT_PREFERENCES_TITLE); setMessage(DialogBoxLabels.EDIT_PREFERENCES_MESSAGE, IMessageProvider.INFORMATION); } /** * This method creates contents of the Dialog Box * * @param parent * @return Control */ @Override protected Control createDialogArea(Composite parent) { Composite area = (Composite) super.createDialogArea(parent); Composite container = new Composite(area, SWT.NONE); container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); GridLayout layout = new GridLayout(2, false); container.setLayout(layout); // creates the link to the preferences page createLink(container); return area; } /** * This method creates a link to the preferencs page of Developer Studio * error reporting tool. * * @param container */ private void createLink(Composite container) { final Link link = new Link(container, SWT.NONE); link.setFont(container.getFont()); link.setText("<A>" + DialogBoxLabels.EDIT_PREFERENCES_LINK + "</A>"); GridData data = new GridData(SWT.LEFT, SWT.TOP, false, false); data.horizontalSpan = 3; link.setLayoutData(data); // directs the user to the prefernce page, once the link is pressed link.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { Shell shell = new Shell(); PreferenceDialog preferencePage = PreferencesUtil.createPreferenceDialogOn(shell, ProjectConstants.PREFERENCE_PAGE, null, null); if (preferencePage != null) preferencePage.open(); } }); } @Override protected boolean isResizable() { return true; } @Override protected void okPressed() { super.okPressed(); } }