Java tutorial
/******************************************************************************* * Copyright (c) 2009 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Zend Technologies *******************************************************************************/ package org.eclipse.php.internal.ui.preferences; import java.io.File; import java.io.FileReader; import java.net.URL; import java.net.URLDecoder; import java.util.ArrayList; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.commons.lang3.StringUtils; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.StatusDialog; import org.eclipse.php.internal.ui.PHPUIMessages; import org.eclipse.php.internal.ui.PHPUiPlugin; 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.*; public class NewPHPManualSiteDialog extends StatusDialog { private static final String[] FILE_EXT = { "php", "htm", "html" }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ private static final boolean isWindows = System.getProperty("os.name").startsWith("Windows"); //$NON-NLS-1$ //$NON-NLS-2$ private static final String FILE_PROTO = "file://"; //$NON-NLS-1$ private static final String CHM_PROTO = "mk:@MSITStore:"; //$NON-NLS-1$ private static final Pattern LANG_DETECT_PATTERN = Pattern.compile("/([a-z_]*)/function\\."); //$NON-NLS-1$ protected Text name; protected Text url; private Button okButton; private boolean enableOK = false; private List configs; private PHPManualConfig edited; private PHPManualConfig result; private Button remoteSiteBtn; private Button localDirectoryBtn; private Button chmFileBtn; private Text localDir; private Text chmFile; private Button dirBrowseButton; private Button chmBrowseButton; private Label fileExtLabel; private Combo fileExtCombo; public NewPHPManualSiteDialog(Shell parentShell, PHPManualConfig edited, List configs) { super(parentShell); this.configs = new ArrayList(configs.size()); for (int i = 0; i < configs.size(); i++) { PHPManualConfig config = (PHPManualConfig) configs.get(i); if (!config.equals(edited)) { this.configs.add(config); } } this.edited = edited; if (edited != null) { setTitle(PHPUIMessages.NewPHPManualSiteDialog_updateTitle); } else { setTitle(PHPUIMessages.NewPHPManualSiteDialog_newTitle); } } public PHPManualConfig getResult() { return result; } protected void setResult(PHPManualConfig result) { this.result = result; } protected void createButtonsForButtonBar(Composite parent) { // super.createButtonBar(parent); okButton = createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true); createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false); okButton.setEnabled(enableOK); } protected Control createDialogArea(Composite parent) { initializeDialogUnits(parent); Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 2; layout.marginHeight = 10; layout.marginWidth = 15; layout.verticalSpacing = 10; composite.setLayout(layout); GridData data = new GridData(); data.widthHint = 400; composite.setLayoutData(data); // --------- Site Name: --------------------- Composite siteNameGroup = new Composite(composite, SWT.NONE); layout = new GridLayout(); layout.numColumns = 2; layout.marginWidth = 0; siteNameGroup.setLayout(layout); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; siteNameGroup.setLayoutData(data); Label label = new Label(siteNameGroup, SWT.NONE); label.setText(PHPUIMessages.NewPHPManualSiteDialog_name); name = new Text(siteNameGroup, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); name.setLayoutData(data); name.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { verifyComplete(); } }); // --------- Remote Site: --------------------- remoteSiteBtn = new Button(composite, SWT.RADIO); remoteSiteBtn.setText(PHPUIMessages.NewPHPManualSiteDialog_remoteSiteURL); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; remoteSiteBtn.setLayoutData(data); remoteSiteBtn.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { boolean enabled = remoteSiteBtn.getSelection(); url.setEnabled(enabled); if (enabled) { fileExtCombo.select(0); } } }); url = new Text(composite, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalIndent = convertWidthInCharsToPixels(3); data.horizontalSpan = 2; url.setLayoutData(data); url.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { verifyComplete(); } }); // --------- Local Directory: --------------------- localDirectoryBtn = new Button(composite, SWT.RADIO); localDirectoryBtn.setText(PHPUIMessages.NewPHPManualSiteDialog_localDirectory); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; localDirectoryBtn.setLayoutData(data); localDirectoryBtn.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { boolean enabled = localDirectoryBtn.getSelection(); localDir.setEnabled(enabled); dirBrowseButton.setEnabled(enabled); if (enabled) { fileExtCombo.select(2); } } }); localDir = new Text(composite, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalIndent = convertWidthInCharsToPixels(3); localDir.setLayoutData(data); localDir.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { verifyComplete(); } }); dirBrowseButton = new Button(composite, SWT.NULL); data = new GridData(); data.widthHint = 50; data.horizontalAlignment = SWT.END; dirBrowseButton.setLayoutData(data); dirBrowseButton.setText("..."); //$NON-NLS-1$ dirBrowseButton.setAlignment(SWT.CENTER); dirBrowseButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { DirectoryDialog dialog = new DirectoryDialog( PHPUiPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getShell(), SWT.OPEN); dialog.setText(PHPUIMessages.NewPHPManualSiteDialog_chooseDir); String directoryAsString = dialog.open(); if (directoryAsString == null) { return; } localDir.setText(directoryAsString); } }); // --------- Site Name: --------------------- if (isWindows) { chmFileBtn = new Button(composite, SWT.RADIO); chmFileBtn.setText(PHPUIMessages.NewPHPManualSiteDialog_windowsCHMFile); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalSpan = 2; chmFileBtn.setLayoutData(data); chmFileBtn.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { boolean enabled = chmFileBtn.getSelection(); chmFile.setEnabled(enabled); chmBrowseButton.setEnabled(enabled); if (enabled) { fileExtCombo.select(2); } } }); chmFile = new Text(composite, SWT.BORDER); data = new GridData(GridData.FILL_HORIZONTAL); data.horizontalIndent = convertWidthInCharsToPixels(3); chmFile.setLayoutData(data); chmFile.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { verifyComplete(); } }); chmBrowseButton = new Button(composite, SWT.NULL); data = new GridData(); data.widthHint = 50; data.horizontalAlignment = SWT.END; chmBrowseButton.setLayoutData(data); chmBrowseButton.setText("..."); //$NON-NLS-1$ chmBrowseButton.setAlignment(SWT.CENTER); chmBrowseButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { FileDialog dialog = new FileDialog( PHPUiPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getShell(), SWT.OPEN); dialog.setText(PHPUIMessages.NewPHPManualSiteDialog_chooseCHMFile); dialog.setFilterExtensions(new String[] { "*.chm" }); //$NON-NLS-1$ String fileAsString = dialog.open(); if (fileAsString == null) { return; } chmFile.setText(fileAsString); } }); } Composite fileExtGroup = new Composite(composite, SWT.NONE); layout = new GridLayout(); layout.numColumns = 2; layout.marginWidth = 0; fileExtGroup.setLayout(layout); data = new GridData(); data.horizontalSpan = 2; fileExtGroup.setLayoutData(data); fileExtLabel = new Label(fileExtGroup, SWT.NONE); data = new GridData(GridData.FILL_HORIZONTAL); fileExtLabel.setLayoutData(data); fileExtLabel.setText(PHPUIMessages.NewPHPManualSiteDialog_fileExtension); fileExtCombo = new Combo(fileExtGroup, SWT.READ_ONLY); fileExtCombo.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { verifyComplete(); } }); fileExtCombo.setItems(FILE_EXT); fileExtCombo.select(0); initializeFields(); Dialog.applyDialogFont(composite); return composite; } protected void initializeFields() { if (edited != null) { name.setText(edited.getLabel()); fileExtCombo.setText(edited.getExtension()); String urlStr = edited.getUrl(); if (isWindows && urlStr.startsWith(CHM_PROTO)) { urlStr = urlStr.substring(CHM_PROTO.length()); int sepIdx = urlStr.indexOf("::"); //$NON-NLS-1$ if (sepIdx != -1) { urlStr = urlStr.substring(0, sepIdx); } chmFile.setText(urlStr); chmFileBtn.setSelection(true); } else if (urlStr.startsWith(FILE_PROTO)) { urlStr = urlStr.substring(FILE_PROTO.length()); localDir.setText(urlStr); localDirectoryBtn.setSelection(true); } else { url.setText(urlStr); } } else { url.setText("http://www.php.net/manual/en"); //$NON-NLS-1$ remoteSiteBtn.setSelection(true); } remoteSiteBtn.notifyListeners(SWT.Selection, new Event()); localDirectoryBtn.notifyListeners(SWT.Selection, new Event()); if (isWindows) { chmFileBtn.notifyListeners(SWT.Selection, new Event()); } } private void verifyComplete() { if (okButton == null) { return; } if (StringUtils.isBlank(name.getText())) { okButton.setEnabled(false); this.updateStatus(new Status(IStatus.ERROR, PHPUiPlugin.getPluginId(), IStatus.OK, PHPUIMessages.NewPHPManualSiteDialog_siteNotSpecified, null)); return; } if (isDuplicate()) { return; } else { okButton.setEnabled(true); this.updateStatus(new Status(IStatus.OK, PHPUiPlugin.getPluginId(), IStatus.OK, "", null)); //$NON-NLS-1$ } if (remoteSiteBtn.getSelection()) { try { String urlStr = url.getText().trim(); new URL(URLDecoder.decode(urlStr, "UTF-8")); //$NON-NLS-1$ result = new PHPManualConfig(name.getText(), urlStr, fileExtCombo.getText(), false); } catch (Exception e) { okButton.setEnabled(false); this.updateStatus(new Status(IStatus.ERROR, PHPUiPlugin.getPluginId(), IStatus.OK, PHPUIMessages.NewPHPManualSiteDialog_incorrectUrl, null)); return; } } else if (localDirectoryBtn.getSelection()) { String localDirStr = localDir.getText().trim(); if (!new File(localDirStr).isDirectory()) { okButton.setEnabled(false); this.updateStatus(new Status(IStatus.ERROR, PHPUiPlugin.getPluginId(), IStatus.OK, PHPUIMessages.NewPHPManualSiteDialog_dirDoesntExist, null)); return; } result = new PHPManualConfig(name.getText(), FILE_PROTO + localDirStr, fileExtCombo.getText(), false); } else if (isWindows) { String chmFileStr = chmFile.getText().trim(); if (!new File(chmFileStr).isFile()) { okButton.setEnabled(false); this.updateStatus(new Status(IStatus.ERROR, PHPUiPlugin.getPluginId(), IStatus.OK, PHPUIMessages.NewPHPManualSiteDialog_fileDoesntExist, null)); return; } result = new PHPManualConfig(name.getText(), CHM_PROTO + chmFileStr + detectCHMLanguageSuffix(chmFileStr), fileExtCombo.getText(), false); } } private boolean isDuplicate() { if (configs == null) { return false; } for (int i = 0; i < configs.size(); i++) { if (!isCurrentlyEditedSiteBookmark(i)) { PHPManualConfig config = (PHPManualConfig) configs.get(i); if (config.getLabel().equals(name.getText().trim())) { okButton.setEnabled(false); this.updateStatus(new Status(IStatus.ERROR, PHPUiPlugin.getPluginId(), IStatus.OK, PHPUIMessages.NewPHPManualSiteDialog_nameAlreadyInUse, null)); return true; } } } return false; } protected boolean isCurrentlyEditedSiteBookmark(int index) { return false; } protected void updateButtonsEnableState(IStatus status) { if (okButton != null && !okButton.isDisposed() && name.getText().trim().length() != 0) okButton.setEnabled(!status.matches(IStatus.ERROR)); } private String detectCHMLanguageSuffix(String chmFile) { StringBuilder suffix = new StringBuilder("::/"); //$NON-NLS-1$ char[] buf = new char[8192]; try { FileReader r = new FileReader(chmFile); try { while (r.ready()) { r.read(buf); Matcher m = LANG_DETECT_PATTERN.matcher(new String(buf)); if (m.find()) { suffix.append(m.group(1)); break; } } } finally { r.close(); } } catch (Exception e) { } return suffix.toString(); } }