Java tutorial
/******************************************************************************* * Copyright (c) 2005, 2009 Intel 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: * Intel Corporation - Initial API and implementation * IBM Corporation *******************************************************************************/ package org.eclipse.cdt.ui.newui; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.preference.JFacePreferences; import org.eclipse.jface.resource.JFaceResources; 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.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.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.eclipse.cdt.core.settings.model.ICConfigurationDescription; import org.eclipse.cdt.internal.ui.newui.Messages; /** * @noextend This class is not intended to be subclassed by clients. */ public class RenameConfigurationDialog extends Dialog { // Widgets private Text configName; private Text configDescription; private ICConfigurationDescription[] cfgds; private ICConfigurationDescription renameConfig; private String newName; private String newDescription; private Label statusLabel; private String originalName; final private String title; /** */ protected RenameConfigurationDialog(Shell parentShell, ICConfigurationDescription _renameConfig, ICConfigurationDescription[] _cfgds, String _title) { super(parentShell); title = _title; renameConfig = _renameConfig; cfgds = _cfgds; setShellStyle(getShellStyle() | SWT.RESIZE); newName = renameConfig.getName(); newDescription = renameConfig.getDescription(); if (newDescription == null) newDescription = new String(); originalName = renameConfig.getName(); } /* (non-Javadoc) * Method declared on Dialog. Cache the name and base config selections. * We don't have to worry that the index or name is wrong because we * enable the OK button IFF those conditions are met. */ @Override protected void buttonPressed(int buttonId) { if (buttonId == IDialogConstants.OK_ID) { newName = configName.getText().trim(); newDescription = configDescription.getText().trim(); } super.buttonPressed(buttonId); } /* (non-Javadoc) * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell) */ @Override protected void configureShell(Shell shell) { super.configureShell(shell); if (title != null) shell.setText(title); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ @Override protected void createButtonsForButtonBar(Composite parent) { super.createButtonsForButtonBar(parent); configName.setFocus(); if (configName != null) { configName.setText(newName); } validateState(); } @Override protected Control createDialogArea(Composite parent) { Composite composite = new Composite(parent, SWT.NULL); composite.setFont(parent.getFont()); composite.setLayout(new GridLayout(3, false)); composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); // Create a group for the name & description final Group group1 = new Group(composite, SWT.NONE); group1.setFont(composite.getFont()); GridLayout layout1 = new GridLayout(3, false); group1.setLayout(layout1); GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 3; group1.setLayoutData(gd); // bug 187634: Add a label to warn user that configuration name will be used directly // as a directory name in the filesystem. Label warningLabel = new Label(group1, SWT.BEGINNING | SWT.WRAP); warningLabel.setFont(parent.getFont()); warningLabel.setText(Messages.RenameConfiguration_label_warning); gd = new GridData(SWT.FILL, SWT.BEGINNING, true, false, 3, 1); gd.widthHint = 300; warningLabel.setLayoutData(gd); // Add a label and a text widget for Configuration's name final Label nameLabel = new Label(group1, SWT.LEFT); nameLabel.setFont(parent.getFont()); nameLabel.setText(Messages.RenameConfiguration_label_name); gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 1; gd.grabExcessHorizontalSpace = false; nameLabel.setLayoutData(gd); configName = new Text(group1, SWT.SINGLE | SWT.BORDER); configName.setFont(group1.getFont()); configName.setText(getNewName()); configName.setFocus(); gd = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 2; gd.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH; configName.setLayoutData(gd); configName.addModifyListener(new ModifyListener() { @Override public void modifyText(ModifyEvent e) { validateState(); } }); // Add a label and a text widget for Configuration's description final Label descriptionLabel = new Label(group1, SWT.LEFT); descriptionLabel.setFont(parent.getFont()); descriptionLabel.setText(Messages.RenameConfiguration_label_description); gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 1; gd.grabExcessHorizontalSpace = false; descriptionLabel.setLayoutData(gd); configDescription = new Text(group1, SWT.SINGLE | SWT.BORDER); configDescription.setFont(group1.getFont()); configDescription.setText(getNewDescription()); configDescription.setFocus(); gd = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 2; gd.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH; configDescription.setLayoutData(gd); statusLabel = new Label(parent, SWT.CENTER); gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 3; statusLabel.setLayoutData(gd); statusLabel.setFont(composite.getFont()); statusLabel.setForeground(JFaceResources.getColorRegistry().get(JFacePreferences.ERROR_COLOR)); return composite; } protected boolean isDuplicateName(String newName) { if (newName.equals(originalName)) return false; // Return true if there is already a config of that name defined for (int i = 0; i < cfgds.length; i++) { if (cfgds[i].getName().equals(newName)) return true; } return false; } protected boolean isSimilarName(String newName) { if (newName.equalsIgnoreCase(originalName)) return false; // Return true if there is already a config of that name defined on the target for (int i = 0; i < cfgds.length; i++) { if (cfgds[i].getName().equalsIgnoreCase(newName)) return true; } return false; } /* (non-Javadoc) * Checks the argument for leading whitespaces and invalid directory name characters. * @param name * @return <I>true</i> is the name is a valid directory name with no whitespaces */ private boolean validateName(String name) { // Iterate over the name checking for bad characters char[] chars = name.toCharArray(); // No whitespaces at the start of a name if (Character.isWhitespace(chars[0])) { return false; } for (int index = 0; index < chars.length; ++index) { // Config name must be a valid dir name too, so we ban "\ / : * ? " < >" in the names if (!Character.isLetterOrDigit(chars[index])) { switch (chars[index]) { case '/': case '\\': case ':': case '*': case '?': case '\"': case '<': case '>': return false; default: break; } } } return true; } /* (non-Javadoc) * Update the status message and button state based on the input selected * by the user * */ private void validateState() { String s = null; String currentName = configName.getText().trim(); // Make sure that the name is at least one character in length if (currentName.length() == 0) { s = ""; //$NON-NLS-1$ // Make sure the name is not a duplicate } else if (isDuplicateName(currentName)) { s = NLS.bind(Messages.RenameConfiguration_error_duplicateName, currentName); } else if (isSimilarName(currentName)) { s = NLS.bind(Messages.RenameConfiguration_error_caseName, currentName); } else if (!validateName(currentName)) { s = NLS.bind(Messages.RenameConfiguration_error_invalidName, currentName); } Button b = getButton(IDialogConstants.OK_ID); if (s != null) { statusLabel.setText(s); statusLabel.setVisible(true); if (b != null) b.setEnabled(false); } else { statusLabel.setVisible(false); if (b != null) b.setEnabled(true); } return; } public String getNewName() { return newName; } public String getNewDescription() { return newDescription; } }