Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.apache.directory.studio.ldapbrowser.common.dialogs; import org.apache.directory.studio.ldapbrowser.common.widgets.browser.BrowserActionGroup; import org.apache.directory.studio.ldapbrowser.common.widgets.browser.BrowserConfiguration; import org.apache.directory.studio.ldapbrowser.common.widgets.browser.BrowserUniversalListener; import org.apache.directory.studio.ldapbrowser.common.widgets.browser.BrowserWidget; import org.apache.directory.studio.ldapbrowser.core.model.IEntry; import org.apache.directory.studio.ldapbrowser.core.model.ISearchResult; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; /** * Dialog to select an entry. * * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> */ public class SelectEntryDialog extends Dialog { /** The dialog title. */ private String title; /** The root entry. */ private IEntry rootEntry; /** The initial entry. */ private IEntry initialEntry; /** The selected entry. */ private IEntry selectedEntry; /** The browser configuration. */ private BrowserConfiguration browserConfiguration; /** The browser universal listener. */ private BrowserUniversalListener browserUniversalListener; /** The browser action group. */ private BrowserActionGroup browserActionGroup; /** The browser widget. */ private BrowserWidget browserWidget; /** * Creates a new instance of SelectEntryDialog. * * @param parentShell the parent shell * @param title the title * @param rootEntry the root entry * @param initialEntry the initial entry */ public SelectEntryDialog(Shell parentShell, String title, IEntry rootEntry, IEntry initialEntry) { super(parentShell); super.setShellStyle(super.getShellStyle() | SWT.RESIZE); this.title = title; this.rootEntry = rootEntry; this.initialEntry = initialEntry; this.selectedEntry = null; } /** * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ protected void configureShell(Shell shell) { super.configureShell(shell); shell.setText(title); } /** * @see org.eclipse.jface.dialogs.Dialog#close() */ public boolean close() { if (browserWidget != null) { browserConfiguration.dispose(); browserConfiguration = null; browserActionGroup.deactivateGlobalActionHandlers(); browserActionGroup.dispose(); browserActionGroup = null; browserUniversalListener.dispose(); browserUniversalListener = null; browserWidget.dispose(); browserWidget = null; } return super.close(); } /** * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ protected void okPressed() { selectedEntry = initialEntry; super.okPressed(); } /** * @see org.eclipse.jface.dialogs.Dialog#cancelPressed() */ protected void cancelPressed() { selectedEntry = null; super.cancelPressed(); } /** * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ protected void createButtonsForButtonBar(Composite parent) { createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, false); createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false); } /** * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite) */ protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); GridData gd = new GridData(GridData.FILL_BOTH); gd.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); gd.heightHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); composite.setLayoutData(gd); // create configuration browserConfiguration = new BrowserConfiguration(); // create main widget browserWidget = new BrowserWidget(browserConfiguration, null); browserWidget.createWidget(composite); browserWidget.setInput(new IEntry[] { rootEntry }); // create actions and context menu (and register global actions) browserActionGroup = new BrowserActionGroup(browserWidget, browserConfiguration); browserActionGroup.fillToolBar(browserWidget.getToolBarManager()); browserActionGroup.fillMenu(browserWidget.getMenuManager()); browserActionGroup.fillContextMenu(browserWidget.getContextMenuManager()); browserActionGroup.activateGlobalActionHandlers(); // create the listener browserUniversalListener = new BrowserUniversalListener(browserWidget); browserWidget.getViewer().addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { if (!event.getSelection().isEmpty()) { Object o = ((IStructuredSelection) event.getSelection()).getFirstElement(); if (o instanceof IEntry) { initialEntry = (IEntry) o; } else if (o instanceof ISearchResult) { initialEntry = ((ISearchResult) o).getEntry(); } } } }); browserWidget.getViewer().expandToLevel(2); if (initialEntry != null) { IEntry entry = this.initialEntry; browserWidget.getViewer().reveal(entry); browserWidget.getViewer().refresh(entry, true); browserWidget.getViewer().setSelection(new StructuredSelection(entry), true); browserWidget.getViewer().setSelection(new StructuredSelection(entry), true); } applyDialogFont(composite); browserWidget.setFocus(); return composite; } /** * Gets the selected entry. * * @return the selected entry */ public IEntry getSelectedEntry() { return selectedEntry; } }