Java tutorial
/* * Copyright (C) 2012 The Android Open Source Project * * 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 com.motorolamobility.studio.android.certmanager.ui.dialogs; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; import org.eclipse.core.runtime.Path; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.IBaseLabelProvider; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.IContentProvider; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; 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.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.TableItem; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.PlatformUI; import com.motorola.studio.android.common.utilities.EclipseUtils; import com.motorola.studio.android.common.utilities.FileUtil; import com.motorolamobility.studio.android.certmanager.CertificateManagerActivator; import com.motorolamobility.studio.android.certmanager.i18n.CertificateManagerNLS; import com.motorolamobility.studio.android.certmanager.ui.model.IKeyStore; import com.motorolamobility.studio.android.certmanager.ui.model.ITreeNode; public class BackupDialog extends TitleAreaDialog { private static final String ZIP_EXT = ".zip"; //$NON-NLS-1$ private static final String WIZARD_BANNER = "icons/wizban/backup_keystore_wiz.png"; //$NON-NLS-1$ private static final String BACKUP_KEYSTORE_HELP_ID = CertificateManagerActivator.PLUGIN_ID + ".backup_keystore"; //$NON-NLS-1$; private final IContentProvider contentProvider; private final IBaseLabelProvider labelProvider; private CheckboxTableViewer tableViewer; private Object input; private final String title; private File archiveFile; private List<String> selectedKeyStores; private String archivePath; private boolean verifyOverwrite; private Button selectAllButton; public BackupDialog(Shell parentShell) { super(parentShell); setShellStyle(getShellStyle() | SWT.RESIZE); this.contentProvider = new BackupContentProvider(); this.labelProvider = new BackupLabelProvider(); this.title = CertificateManagerNLS.BackupDialog_Diag_Title; this.archivePath = ""; //$NON-NLS-1$ selectedKeyStores = new ArrayList<String>(); setTitleImage(CertificateManagerActivator .imageDescriptorFromPlugin(CertificateManagerActivator.PLUGIN_ID, WIZARD_BANNER).createImage()); } @Override protected Control createDialogArea(Composite parent) { getShell().setText(title); setTitle(CertificateManagerNLS.BackupDialog_DialogTitle); //the shell has the same help as its page PlatformUI.getWorkbench().getHelpSystem().setHelp(getShell(), BackupDialog.BACKUP_KEYSTORE_HELP_ID); Composite dialogArea = new Composite(parent, SWT.FILL); dialogArea.setLayout(new GridLayout()); dialogArea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); Group pathGroup = new Group(dialogArea, SWT.SHADOW_NONE); pathGroup.setText(CertificateManagerNLS.BackupDialog_Backup_File); pathGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); pathGroup.setLayout(new GridLayout(3, false)); Label pathLabel = new Label(pathGroup, SWT.NONE); pathLabel.setText(CertificateManagerNLS.BackupDialog_Path); pathLabel.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false)); final Text pathText = new Text(pathGroup, SWT.BORDER); pathText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); pathText.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { archivePath = pathText.getText(); archiveFile = new File(archivePath); verifyOverwrite = true; validate(); } }); Button browseButton = new Button(pathGroup, SWT.PUSH); browseButton.setText(CertificateManagerNLS.BackupDialog_Browse); browseButton.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false)); browseButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { FileDialog fileDialog = new FileDialog(getShell(), SWT.SAVE); fileDialog.setFilterExtensions(new String[] { "*" + ZIP_EXT //$NON-NLS-1$ }); fileDialog.setOverwrite(true); String choosenPath = fileDialog.open(); pathText.setText(choosenPath); verifyOverwrite = false; super.widgetSelected(e); } }); Group keystoresGroup = new Group(dialogArea, SWT.SHADOW_NONE); keystoresGroup.setText(CertificateManagerNLS.BackupDialog_KeyStores); keystoresGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); keystoresGroup.setLayout(new GridLayout(1, false)); tableViewer = CheckboxTableViewer.newCheckList(keystoresGroup, SWT.H_SCROLL | SWT.V_SCROLL | SWT.CHECK | SWT.BORDER); tableViewer.setContentProvider(contentProvider); tableViewer.setLabelProvider(labelProvider); tableViewer.setInput(input); selectKeystores(); GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true); layoutData.widthHint = 400; layoutData.heightHint = 200; tableViewer.getControl().setLayoutData(layoutData); tableViewer.addCheckStateListener(new ICheckStateListener() { @Override public void checkStateChanged(CheckStateChangedEvent event) { String keyStore = null; Object element = event.getElement(); if (element instanceof String) { keyStore = (String) element; } if (keyStore != null) { if (event.getChecked()) { selectedKeyStores.add(keyStore); } else { selectedKeyStores.remove(keyStore); } } updateSelectAllState(); validate(); } }); Composite selectButtonArea = new Composite(keystoresGroup, SWT.NONE); selectButtonArea.setLayout(new GridLayout(1, true)); selectButtonArea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); selectAllButton = new Button(selectButtonArea, SWT.CHECK); selectAllButton.setText(CertificateManagerNLS.BackupDialog_Select_All); selectAllButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false)); selectAllButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { tableViewer.setAllChecked(selectAllButton.getSelection()); selectedKeyStores.clear(); for (Object element : tableViewer.getCheckedElements()) { String keyStoreEl = (String) element; selectedKeyStores.add(keyStoreEl); } validate(); super.widgetSelected(e); } }); updateSelectAllState(); setMessage(CertificateManagerNLS.BackupDialog_Default_Message); return dialogArea; } private void updateSelectAllState() { if (tableViewer.getCheckedElements().length == tableViewer.getTable().getItems().length) { selectAllButton.setSelection(true); } else { selectAllButton.setSelection(false); } } @Override protected Control createButtonBar(Composite parent) { Control buttonBar = super.createButtonBar(parent); getButton(OK).setEnabled(false); return buttonBar; } @Override protected void okPressed() { boolean canContinue = true; if (verifyOverwrite && archiveFile.exists()) { boolean canOvewrite = EclipseUtils.showQuestionDialog( CertificateManagerNLS.BackupDialog_Archive_Exists_Title, NLS.bind(CertificateManagerNLS.BackupDialog_Archive_Exists_Message, archiveFile)); if (!canOvewrite) { canContinue = false; } else { archiveFile.delete(); } } if (canContinue) { if (!FileUtil.canWrite(archiveFile)) { EclipseUtils.showErrorDialog(CertificateManagerNLS.BackupDialog_Fail_Writing_Archive_Title, NLS.bind(CertificateManagerNLS.BackupDialog_Fail_Writing_Archive_Message, archiveFile)); } else { setErrorMessage(null); super.okPressed(); } } } private void validate() { boolean isValid = true; boolean hasWarn = false; Path path = new Path(archivePath); try { if (archivePath.isEmpty() || !path.isValidPath(archiveFile.getCanonicalPath())) { setErrorMessage(CertificateManagerNLS.BackupDialog_Invalid_Destination_Title); isValid = false; } } catch (IOException e) { setErrorMessage(CertificateManagerNLS.BackupDialog_Invalid_Destination_Title); isValid = false; } if (isValid) { if (archiveFile.exists() && (archiveFile.isDirectory())) { setErrorMessage(CertificateManagerNLS.BackupDialog_Invalid_Destination_Message); isValid = false; } } if (isValid) { if (!archiveFile.isAbsolute()) { setMessage(NLS.bind(CertificateManagerNLS.BackupDialog_Non_Absolute_Path, archiveFile.getAbsolutePath()), IMessageProvider.WARNING); hasWarn = true; } } if (isValid) { if (selectedKeyStores.isEmpty()) { setErrorMessage(CertificateManagerNLS.BackupDialog_Select_KeyStore); isValid = false; } else { setErrorMessage(null); if (!hasWarn) { setMessage(CertificateManagerNLS.BackupDialog_Default_Message); } isValid = true; } } getButton(OK).setEnabled(isValid); } public void setInput(Object input) { if (tableViewer != null) { tableViewer.setInput(input); } this.input = input; } /** * @return the Archive file to be created */ public File getArchiveFile() { return archiveFile.getName().toLowerCase().endsWith(ZIP_EXT) ? archiveFile : new File(archivePath + ZIP_EXT); } /** * @return the Keystores file paths to be archived */ public List<String> getSelectedKeyStores() { return selectedKeyStores; } public void selectKeyStores(List<ITreeNode> keystores) { for (ITreeNode treeNode : keystores) { if (treeNode instanceof IKeyStore) { IKeyStore keystore = (IKeyStore) treeNode; selectedKeyStores.add(keystore.getFile().getAbsolutePath()); } } } private void selectKeystores() { for (TableItem item : tableViewer.getTable().getItems()) { item.setChecked(selectedKeyStores.contains(item.getText())); } } }