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.Enumeration; import java.util.List; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; 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.DirectoryDialog; import org.eclipse.swt.widgets.Display; 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.Text; import org.eclipse.ui.PlatformUI; import com.motorola.studio.android.common.log.StudioLogger; import com.motorolamobility.studio.android.certmanager.CertificateManagerActivator; import com.motorolamobility.studio.android.certmanager.command.BackupHandler; import com.motorolamobility.studio.android.certmanager.i18n.CertificateManagerNLS; public class RestoreBackupDialog extends TitleAreaDialog { private static final String ZIP_EXT = "*.zip"; //$NON-NLS-1$ private static final String WIZARD_BANNER = "icons/wizban/restore_keystore_wiz.png"; //$NON-NLS-1$ public static final String RESTORE_KEYSTORE_HELP_ID = CertificateManagerActivator.PLUGIN_ID + ".restore_keystore"; //$NON-NLS-1$ private final IContentProvider contentProvider; private final IBaseLabelProvider labelProvider; private CheckboxTableViewer tableViewer; private final String title; private File archiveFile; private List<String> selectedKeyStores; private File destinationFile; private Button selectAllButton; private String destinationPath = ""; //$NON-NLS-1$ public RestoreBackupDialog(Shell parentShell) { super(parentShell); setShellStyle(getShellStyle() | SWT.RESIZE); this.contentProvider = new BackupContentProvider(); this.labelProvider = new BackupLabelProvider(); this.title = CertificateManagerNLS.RestoreBackupDialog_Dialog_Title; selectedKeyStores = new ArrayList<String>(); setTitleImage(CertificateManagerActivator .imageDescriptorFromPlugin(CertificateManagerActivator.PLUGIN_ID, WIZARD_BANNER).createImage()); } @Override protected Control createDialogArea(Composite parent) { getShell().setText(title); setTitle(CertificateManagerNLS.RestoreBackupDialog_TitleArea_Message); PlatformUI.getWorkbench().getHelpSystem().setHelp(getShell(), RestoreBackupDialog.RESTORE_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.RestoreBackupDialog_Path_Group); 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.RestoreBackupDialog_BackUp_File); 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) { archiveFile = new File(pathText.getText()); selectAllButton.setSelection(false); validate(); loadArchiveEntries(); } }); Button browseButton = new Button(pathGroup, SWT.PUSH); browseButton.setText(CertificateManagerNLS.RestoreBackupDialog_Browse_Button); 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()); fileDialog.setFilterExtensions(new String[] { ZIP_EXT }); fileDialog.setOverwrite(false); String choosenPath = fileDialog.open(); pathText.setText(choosenPath); super.widgetSelected(e); } }); Label destinPath = new Label(pathGroup, SWT.NONE); destinPath.setText(CertificateManagerNLS.RestoreBackupDialog_Destination); destinPath.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false)); final Text destinText = new Text(pathGroup, SWT.BORDER); destinText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); destinText.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { destinationPath = destinText.getText(); destinationFile = new File(destinationPath); validate(); } }); Button destinBrowseButton = new Button(pathGroup, SWT.PUSH); destinBrowseButton.setText(CertificateManagerNLS.RestoreBackupDialog_Browse_Button); destinBrowseButton.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false)); destinBrowseButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { DirectoryDialog directoryDialog = new DirectoryDialog(getShell()); String choosenPath = directoryDialog.open(); destinText.setText(choosenPath); super.widgetSelected(e); } }); Group keystoresGroup = new Group(dialogArea, SWT.SHADOW_NONE); keystoresGroup.setText(CertificateManagerNLS.RestoreBackupDialog_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); 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); } } if (tableViewer.getCheckedElements().length == tableViewer.getTable().getItems().length) { selectAllButton.setSelection(true); } else { selectAllButton.setSelection(false); } 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.RestoreBackupDialog_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); } }); setMessage(CertificateManagerNLS.RestoreBackupDialog_Default_Message); return dialogArea; } protected void loadArchiveEntries() { Runnable loadRunnable = new Runnable() { @Override public void run() { if (archiveFile.exists()) { @SuppressWarnings("rawtypes") final List[] holderArray = new List[1]; ZipFile zipFile = null; try { zipFile = new ZipFile(archiveFile, ZipFile.OPEN_READ); ArrayList<String> keyStores = new ArrayList<String>(zipFile.size()); holderArray[0] = keyStores; Enumeration<? extends ZipEntry> entries = zipFile.entries(); while (entries.hasMoreElements()) { ZipEntry zipEntry = entries.nextElement(); if (!zipEntry.getName().equalsIgnoreCase(BackupHandler.KS_TYPES_FILENAME)) { keyStores.add(zipEntry.getName()); } } Display.getDefault().syncExec(new Runnable() { @Override public void run() { tableViewer.setInput(holderArray[0]); } }); } catch (Exception e) { Display.getDefault().asyncExec(new Runnable() { @Override public void run() { clearKeystoresTableViewer(); setErrorMessage( NLS.bind(CertificateManagerNLS.RestoreBackupDialog_Error_Loading_Entries, archiveFile)); getButton(OK).setEnabled(false); } }); } finally { if (zipFile != null) { try { zipFile.close(); } catch (IOException e) { StudioLogger .error("Could not close stream while restoring backup. " + e.getMessage()); } } } } } }; Thread thread = new Thread(loadRunnable); thread.start(); } @Override protected Control createButtonBar(Composite parent) { Control buttonBar = super.createButtonBar(parent); getButton(OK).setEnabled(false); return buttonBar; } private void validate() { boolean isValid = true; if (!archiveFile.exists()) { clearKeystoresTableViewer(); setErrorMessage(CertificateManagerNLS.RestoreBackupDialog_BackUpFile_Not_Exist); isValid = false; } else { setErrorMessage(null); isValid = true; } if (isValid) { if (destinationPath.isEmpty()) { setErrorMessage(CertificateManagerNLS.RestoreBackupDialog_Invalid_Dest_Path); isValid = false; } else { if ((destinationFile != null) && destinationFile.isFile()) { setErrorMessage(CertificateManagerNLS.RestoreBackupDialog_Invalid_Dest_Path); isValid = false; } else { setErrorMessage(null); isValid = true; } } } if (isValid) { if (selectedKeyStores.isEmpty()) { setErrorMessage(CertificateManagerNLS.RestoreBackupDialog_Select_KeyStore); isValid = false; } else { setErrorMessage(null); isValid = true; } } getButton(OK).setEnabled(isValid); } /** * Remove all entries from keystores table viewer. * */ private void clearKeystoresTableViewer() { tableViewer.setInput(null); } /** * @return The back archive file */ public File getArchiveFile() { return archiveFile; } /** * @return The keystores to be restored */ public List<String> getSelectedKeyStores() { return selectedKeyStores; } /** * @return The destination directory */ public File getDestinationDir() { return destinationFile; } }