Java tutorial
/* Copyright 2007-2014 Fraunhofer IGD, http://www.igd.fraunhofer.de Fraunhofer-Gesellschaft - Institut fr Graphische Datenverarbeitung See the NOTICE file distributed with this work for additional information regarding copyright ownership 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 org.universaal.uaalpax.ui.dialogs; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IInputValidator; import org.eclipse.jface.resource.StringConverter; import org.eclipse.swt.SWT; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.FocusListener; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class NewRunconfigDialog extends Dialog { private final String title = "Create new uAAL run configuration"; private final String nameMessage = "Enter config name"; private final String projectMessage = "Select project where to create"; private Text nameInput; private Combo projectCombo; private Text errorMessageText; private String errorMessage; private IInputValidator validator; private String name; private IContainer container; private IProject[] projects; public NewRunconfigDialog(Shell parentShell) { super(parentShell); name = ""; } public String getName() { return name; } public IContainer getContainer() { return container; } @Override protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); validator = new IInputValidator() { public String isValid(String newText) { if (newText.isEmpty()) return "Name must not be empty"; else return null; } }; Label urlLabel = new Label(composite, SWT.WRAP); urlLabel.setText(nameMessage); GridData urlData = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); urlData.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); urlLabel.setLayoutData(urlData); urlLabel.setFont(parent.getFont()); nameInput = new Text(composite, SWT.SINGLE | SWT.BORDER); nameInput.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL)); nameInput.setText(name); nameInput.addFocusListener(new FocusListener() { public void focusLost(FocusEvent e) { } public void focusGained(FocusEvent e) { nameInput.selectAll(); } }); nameInput.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateName(); } }); nameInput.setFocus(); IWorkspaceRoot myWorkspaceRoot = ResourcesPlugin.getWorkspace().getRoot(); projects = myWorkspaceRoot.getProjects(); Label projectLabel = new Label(composite, SWT.WRAP); projectLabel.setText(projectMessage); GridData lvlData = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); lvlData.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); projectLabel.setLayoutData(lvlData); projectLabel.setFont(parent.getFont()); projectCombo = new Combo(composite, SWT.READ_ONLY); projectCombo.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL)); String[] items = new String[projects.length + 1]; items[0] = "default"; for (int i = 0; i < projects.length; i++) items[i + 1] = projects[i].getName(); projectCombo.setItems(items); projectCombo.select(0); errorMessageText = new Text(composite, SWT.READ_ONLY | SWT.WRAP); errorMessageText.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL)); errorMessageText.setBackground(errorMessageText.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND)); setErrorMessage(errorMessage); errorMessageText.setForeground(new Color(errorMessageText.getDisplay(), 255, 0, 0)); applyDialogFont(composite); return composite; } protected void setErrorMessage(String errorMessage) { this.errorMessage = errorMessage; if (errorMessageText != null && !errorMessageText.isDisposed()) { errorMessageText.setText(errorMessage == null ? " \n " : errorMessage); //$NON-NLS-1$ // Disable the error message text control if there is no error, or // no error text (empty or whitespace only). Hide it also to avoid // color change. // See https://bugs.eclipse.org/bugs/show_bug.cgi?id=130281 boolean hasError = errorMessage != null && (StringConverter.removeWhiteSpaces(errorMessage)).length() > 0; errorMessageText.setEnabled(hasError); errorMessageText.setVisible(hasError); errorMessageText.getParent().update(); // Access the ok button by id, in case clients have overridden button creation. // See https://bugs.eclipse.org/bugs/show_bug.cgi?id=113643 Control button = getButton(IDialogConstants.OK_ID); if (button != null) { button.setEnabled(errorMessage == null); } } } protected void validateName() { String errorMessage = null; if (validator != null) { errorMessage = validator.isValid(nameInput.getText()); } setErrorMessage(errorMessage); } @Override protected void configureShell(Shell newShell) { super.configureShell(newShell); newShell.setText(title); } /* * (non-Javadoc) Method declared on Dialog. */ protected void buttonPressed(int buttonId) { if (buttonId == IDialogConstants.OK_ID) { name = nameInput.getText(); if (projectCombo.getSelectionIndex() <= 0) container = null; else container = projects[projectCombo.getSelectionIndex() - 1]; } else { name = null; container = null; } super.buttonPressed(buttonId); } }