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.connection.core.Connection; import org.apache.directory.studio.connection.core.ConnectionCorePlugin; import org.apache.directory.studio.connection.ui.widgets.ConnectionActionGroup; import org.apache.directory.studio.connection.ui.widgets.ConnectionConfiguration; import org.apache.directory.studio.connection.ui.widgets.ConnectionUniversalListener; import org.apache.directory.studio.connection.ui.widgets.ConnectionWidget; import org.apache.directory.studio.ldapbrowser.core.BrowserCorePlugin; import org.apache.directory.studio.ldapbrowser.core.model.IBrowserConnection; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; 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.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; /** * Dialog to select an {@link IBrowserConnection}. * * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> */ public class SelectBrowserConnectionDialog extends Dialog { /** The title */ private String title; /** The initial browser connection */ private IBrowserConnection initialBrowserConnection; /** The selected browser connection */ private IBrowserConnection selectedBrowserConnection; /** The connection configuration */ private ConnectionConfiguration connectionConfiguration; /** The connection universal listener */ private ConnectionUniversalListener connectionUniversalListener; /** The connection action group */ private ConnectionActionGroup connectionActionGroup; /** The connection main widget */ private ConnectionWidget connectionMainWidget; /** * Creates a new instance of SelectConnectionDialog. * * @param parentShell the parent shell * @param title the title * @param initialBrowserConnection the initial browser connection */ public SelectBrowserConnectionDialog(Shell parentShell, String title, IBrowserConnection initialBrowserConnection) { super(parentShell); super.setShellStyle(super.getShellStyle() | SWT.RESIZE); this.title = title; this.initialBrowserConnection = initialBrowserConnection; this.selectedBrowserConnection = 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 (connectionMainWidget != null) { connectionConfiguration.dispose(); connectionConfiguration = null; connectionActionGroup.deactivateGlobalActionHandlers(); connectionActionGroup.dispose(); connectionActionGroup = null; connectionUniversalListener.dispose(); connectionUniversalListener = null; connectionMainWidget.dispose(); connectionMainWidget = null; } return super.close(); } /** * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ protected void okPressed() { selectedBrowserConnection = initialBrowserConnection; super.okPressed(); } /** * @see org.eclipse.jface.dialogs.Dialog#cancelPressed() */ protected void cancelPressed() { selectedBrowserConnection = 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); GridLayout gl = new GridLayout(); composite.setLayout(gl); GridData gd = new GridData(GridData.FILL_BOTH); gd.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); gd.heightHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH / 2); composite.setLayoutData(gd); // create configuration connectionConfiguration = new ConnectionConfiguration(); // create main widget connectionMainWidget = new ConnectionWidget(connectionConfiguration, null); connectionMainWidget.createWidget(composite); connectionMainWidget.setInput(ConnectionCorePlugin.getDefault().getConnectionFolderManager()); // create actions and context menu (and register global actions) connectionActionGroup = new ConnectionActionGroup(connectionMainWidget, connectionConfiguration); connectionActionGroup.fillToolBar(connectionMainWidget.getToolBarManager()); connectionActionGroup.fillMenu(connectionMainWidget.getMenuManager()); connectionActionGroup.fillContextMenu(connectionMainWidget.getContextMenuManager()); connectionActionGroup.activateGlobalActionHandlers(); // create the listener connectionUniversalListener = new ConnectionUniversalListener(connectionMainWidget.getViewer()); connectionMainWidget.getViewer().addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { if (!event.getSelection().isEmpty()) { Object o = ((IStructuredSelection) event.getSelection()).getFirstElement(); if (o instanceof Connection) { Connection connection = (Connection) o; IBrowserConnection browserConnection = BrowserCorePlugin.getDefault().getConnectionManager() .getBrowserConnection(connection); initialBrowserConnection = browserConnection; } } } }); connectionMainWidget.getViewer().addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { if (!event.getSelection().isEmpty()) { Object o = ((IStructuredSelection) event.getSelection()).getFirstElement(); if (o instanceof Connection) { Connection connection = (Connection) o; IBrowserConnection browserConnection = BrowserCorePlugin.getDefault().getConnectionManager() .getBrowserConnection(connection); initialBrowserConnection = browserConnection; okPressed(); } } } }); if (initialBrowserConnection != null) { Connection connection = initialBrowserConnection.getConnection(); if (connection != null) { connectionMainWidget.getViewer().reveal(connection); connectionMainWidget.getViewer().setSelection(new StructuredSelection(connection), true); } } applyDialogFont(composite); connectionMainWidget.setFocus(); return composite; } /** * Gets the selected browser connection or null if the dialog was canceled. * * @return the selected browser connection or null if the dialog was canceled */ public IBrowserConnection getSelectedBrowserConnection() { return selectedBrowserConnection; } }