Java tutorial
/******************************************************************************* * Copyright (c) 2011-2014 Torkild U. Resheim. * * 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: * Torkild U. Resheim - initial API and implementation *******************************************************************************/ package org.eclipse.mylyn.internal.docs.epub.ui; import java.io.File; import java.util.Set; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.UpdateValueStrategy; import org.eclipse.core.databinding.beans.PojoObservables; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.databinding.validation.IValidator; import org.eclipse.core.databinding.validation.ValidationStatus; import org.eclipse.core.runtime.IStatus; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.wizard.WizardPageSupport; import org.eclipse.jface.fieldassist.ControlDecoration; import org.eclipse.jface.fieldassist.FieldDecoration; import org.eclipse.jface.fieldassist.FieldDecorationRegistry; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.mylyn.docs.epub.core.PublicationProxy; import org.eclipse.swt.SWT; 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.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.DateTime; 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.Text; import org.eclipse.ui.plugin.AbstractUIPlugin; public class MainPage extends WizardPage { private DataBindingContext m_bindingContext; private Text titleText; private Text copyrightText; private Text coverText; private Text styleSheetText; private Text identifierText; private Text subjectText; /** * @wbp.nonvisual location=681,21 */ private PublicationProxy bean = new PublicationProxy(); private Combo schemeText; private Text authorText; private Combo combo; private DateTime dateTime; /** * Create the wizard. * * @wbp.parser.constructor */ public MainPage() { super("wizardPage"); //$NON-NLS-1$ setMessage(Messages.MainPage_0); setImageDescriptor( AbstractUIPlugin.imageDescriptorFromPlugin(EPUBUIPlugin.PLUGIN_ID, "icons/wizard-banner.png")); //$NON-NLS-1$ setTitle(Messages.MainPage_1); } public MainPage(PublicationProxy bean) { this(); this.bean = bean; } /** * Create contents of the wizard. * * @param parent */ public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NULL); setControl(container); container.setLayout(new GridLayout(1, true)); Group grpRequiredDetails = new Group(container, SWT.NONE); grpRequiredDetails.setLayout(new GridLayout(4, false)); GridData gd_grpRequiredDetails = new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1); gd_grpRequiredDetails.heightHint = 187; grpRequiredDetails.setLayoutData(gd_grpRequiredDetails); grpRequiredDetails.setText(Messages.MainPage_2); Label lblTitle = new Label(grpRequiredDetails, SWT.NONE); lblTitle.setText(Messages.MainPage_3); titleText = new Text(grpRequiredDetails, SWT.BORDER); titleText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1)); Label lblAuthor = new Label(grpRequiredDetails, SWT.NONE); lblAuthor.setText(Messages.MainPage_4); authorText = new Text(grpRequiredDetails, SWT.BORDER); authorText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); Label lblNewLabel_1 = new Label(grpRequiredDetails, SWT.NONE); lblNewLabel_1.setText(Messages.MainPage_5); dateTime = new DateTime(grpRequiredDetails, SWT.BORDER | SWT.LONG); Label lblIdentifier = new Label(grpRequiredDetails, SWT.NONE); lblIdentifier.setText(Messages.MainPage_6); identifierText = new Text(grpRequiredDetails, SWT.BORDER); identifierText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); Label lblScheme = new Label(grpRequiredDetails, SWT.NONE); lblScheme.setText(Messages.MainPage_7); schemeText = new Combo(grpRequiredDetails, SWT.BORDER); schemeText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); schemeText.add(Messages.MainPage_8); Label lblCopyright = new Label(grpRequiredDetails, SWT.NONE); lblCopyright.setText(Messages.MainPage_9); copyrightText = new Text(grpRequiredDetails, SWT.BORDER); copyrightText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); Label lblLanguage = new Label(grpRequiredDetails, SWT.NONE); lblLanguage.setText(Messages.MainPage_10); combo = new Combo(grpRequiredDetails, SWT.READ_ONLY); combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); Set<String> locales = bean.getLocales().keySet(); for (String name : locales) { combo.add(name); } Label lblDescription = new Label(grpRequiredDetails, SWT.NONE); lblDescription.setText(Messages.MainPage_11); subjectText = new Text(grpRequiredDetails, SWT.BORDER); subjectText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1)); Group grpCoverAndStyling = new Group(container, SWT.NONE); grpCoverAndStyling.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false, 1, 1)); grpCoverAndStyling.setText(Messages.MainPage_12); grpCoverAndStyling.setLayout(new GridLayout(3, false)); Label lblNewLabel = new Label(grpCoverAndStyling, SWT.NONE); lblNewLabel.setText(Messages.MainPage_13); coverText = new Text(grpCoverAndStyling, SWT.BORDER); coverText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1)); Button button = new Button(grpCoverAndStyling, SWT.NONE); button.setText("..."); //$NON-NLS-1$ button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { // XXX: Replace with ResourceSelectionDialog? FileDialog dialog = new FileDialog(Display.getCurrent().getActiveShell(), SWT.OPEN); dialog.setFilterNames(new String[] { Messages.MainPage_15 }); dialog.setFilterExtensions(new String[] { "*.png;*.gif;*.jpg;*.svg" }); //$NON-NLS-1$ dialog.setFilterPath(bean.getMarkupFile().getAbsolutePath()); String s = dialog.open(); if (s != null) { coverText.setText(s); } } }); Label lblStyleSheet = new Label(grpCoverAndStyling, SWT.NONE); lblStyleSheet.setBounds(0, 0, 59, 14); lblStyleSheet.setText(Messages.MainPage_16); styleSheetText = new Text(grpCoverAndStyling, SWT.BORDER); styleSheetText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1)); Button button_1 = new Button(grpCoverAndStyling, SWT.NONE); button_1.setText("..."); //$NON-NLS-1$ button_1.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { // XXX: Replace with ResourceSelectionDialog? FileDialog dialog = new FileDialog(Display.getCurrent().getActiveShell(), SWT.OPEN); dialog.setFilterNames(new String[] { Messages.MainPage_18 }); dialog.setFilterExtensions(new String[] { "*.css" }); //$NON-NLS-1$ dialog.setFilterPath(bean.getMarkupFile().getAbsolutePath()); String s = dialog.open(); if (s != null) { styleSheetText.setText(s); } } }); m_bindingContext = initDataBindings(); WizardPageSupport.create(this, m_bindingContext); setMessage(Messages.MainPage_0); } private final class StringValidator implements IValidator { private final String errorText; private final ControlDecoration controlDecoration; public StringValidator(String errorText, Control control) { this.errorText = errorText; controlDecoration = new ControlDecoration(control, SWT.LEFT | SWT.TOP); FieldDecoration fieldDecoration = FieldDecorationRegistry.getDefault() .getFieldDecoration(FieldDecorationRegistry.DEC_REQUIRED); controlDecoration.setImage(fieldDecoration.getImage()); } public IStatus validate(Object value) { if (value instanceof String) { String text = (String) value; if (text.trim().length() == 0) { controlDecoration.show(); return ValidationStatus.cancel(errorText); } } controlDecoration.hide(); return ValidationStatus.ok(); } } private final class FileValidator implements IValidator { private final String errorText; private final String[] fileSuffixes; private final ControlDecoration controlDecoration; public FileValidator(String errorText, Control control, String[] fileSuffixes) { this.errorText = errorText; this.fileSuffixes = fileSuffixes; controlDecoration = new ControlDecoration(control, SWT.LEFT | SWT.TOP); FieldDecoration fieldDecoration = FieldDecorationRegistry.getDefault() .getFieldDecoration(FieldDecorationRegistry.DEC_ERROR); controlDecoration.setImage(fieldDecoration.getImage()); controlDecoration.hide(); } public IStatus validate(Object value) { if (value instanceof String && ((String) value).length() > 0) { File file = new File((String) value); if (!file.exists()) { controlDecoration.show(); return ValidationStatus.error("The specified file must exist."); //$NON-NLS-1$ } boolean suffixOK = false; String name = file.getName(); for (String suffix : fileSuffixes) { if (name.endsWith(suffix)) { suffixOK = true; } } if (!suffixOK) { controlDecoration.show(); return ValidationStatus.error(errorText); } } controlDecoration.hide(); return ValidationStatus.ok(); } } protected DataBindingContext initDataBindings() { DataBindingContext bindingContext = new DataBindingContext(); // IObservableValue textObserveTextObserveWidget = SWTObservables.observeText(titleText, SWT.Modify); final IObservableValue beanTitleObserveValue = PojoObservables.observeValue(bean, "title"); //$NON-NLS-1$ UpdateValueStrategy titleStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); titleStrategy.setBeforeSetValidator(new StringValidator("A title must be specified", titleText)); //$NON-NLS-1$ bindingContext.bindValue(textObserveTextObserveWidget, beanTitleObserveValue, titleStrategy, null); // IObservableValue text_3ObserveTextObserveWidget = SWTObservables.observeText(authorText, SWT.Modify); final IObservableValue beanCreatorObserveValue = PojoObservables.observeValue(bean, "creator"); //$NON-NLS-1$ UpdateValueStrategy authorStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); authorStrategy.setBeforeSetValidator(new StringValidator("An author must be specified", authorText)); //$NON-NLS-1$ bindingContext.bindValue(text_3ObserveTextObserveWidget, beanCreatorObserveValue, authorStrategy, null); // IObservableValue dateTimeObserveSelectionObserveWidget = SWTObservables.observeSelection(dateTime); final IObservableValue beanPublicationDateObserveValue = PojoObservables.observeValue(bean, "publicationDate"); //$NON-NLS-1$ bindingContext.bindValue(dateTimeObserveSelectionObserveWidget, beanPublicationDateObserveValue, null, null); // IObservableValue text_4ObserveTextObserveWidget = SWTObservables.observeText(identifierText, SWT.Modify); final IObservableValue beanIdentifierObserveValue = PojoObservables.observeValue(bean, "identifier"); //$NON-NLS-1$ UpdateValueStrategy identifierStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); identifierStrategy .setBeforeSetValidator(new StringValidator("An identifier must be specified", identifierText)); //$NON-NLS-1$ bindingContext.bindValue(text_4ObserveTextObserveWidget, beanIdentifierObserveValue, identifierStrategy, null); // IObservableValue schemeTextObserveTextObserveWidget = SWTObservables.observeText(schemeText); final IObservableValue beanIdSchemeObserveValue = PojoObservables.observeValue(bean, "scheme"); //$NON-NLS-1$ UpdateValueStrategy schemeStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); schemeStrategy .setBeforeSetValidator(new StringValidator("An identifier scheme must be specified", schemeText)); //$NON-NLS-1$ bindingContext.bindValue(schemeTextObserveTextObserveWidget, beanIdSchemeObserveValue, schemeStrategy, null); // IObservableValue text_1ObserveTextObserveWidget = SWTObservables.observeText(copyrightText, SWT.Modify); final IObservableValue beanRightsObserveValue = PojoObservables.observeValue(bean, "rights"); //$NON-NLS-1$ UpdateValueStrategy rightsStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); rightsStrategy.setBeforeSetValidator(new StringValidator("Rights must be specified", copyrightText)); //$NON-NLS-1$ bindingContext.bindValue(text_1ObserveTextObserveWidget, beanRightsObserveValue, rightsStrategy, null); // IObservableValue comboObserveTextObserveWidget = SWTObservables.observeText(combo); final IObservableValue beanLanguageObserveValue = PojoObservables.observeValue(bean, "language"); //$NON-NLS-1$ UpdateValueStrategy languageStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); languageStrategy.setBeforeSetValidator(new StringValidator("A language must be specified", combo)); //$NON-NLS-1$ bindingContext.bindValue(comboObserveTextObserveWidget, beanLanguageObserveValue, languageStrategy, null); // IObservableValue subjectTextObserveTextObserveWidget = SWTObservables.observeText(subjectText, SWT.Modify); final IObservableValue beanSubjectObserveValue = PojoObservables.observeValue(bean, "subject"); //$NON-NLS-1$ UpdateValueStrategy subjectStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); subjectStrategy.setBeforeSetValidator(new StringValidator("A subject must be specified", subjectText)); //$NON-NLS-1$ bindingContext.bindValue(subjectTextObserveTextObserveWidget, beanSubjectObserveValue, subjectStrategy, null); // IObservableValue coverObserveTextObserveWidget = SWTObservables.observeText(coverText, SWT.Modify); IObservableValue beanCoverObserveValue = PojoObservables.observeValue(bean, "cover"); //$NON-NLS-1$ UpdateValueStrategy coverStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); coverStrategy.setBeforeSetValidator(new FileValidator( "The cover image must be a valid image file of type PNG, SVG or JPEG.", coverText, new String[] { //$NON-NLS-1$ ".png", ".svg", ".jpeg", ".jpg" })); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ bindingContext.bindValue(coverObserveTextObserveWidget, beanCoverObserveValue, coverStrategy, null); // IObservableValue styleSheetTextObserveTextObserveWidget = SWTObservables.observeText(styleSheetText, SWT.Modify); IObservableValue beanStyleSheetObserveValue = PojoObservables.observeValue(bean, "styleSheet"); //$NON-NLS-1$ UpdateValueStrategy styleSheetStrategy = new UpdateValueStrategy(UpdateValueStrategy.POLICY_UPDATE); styleSheetStrategy.setBeforeSetValidator(new FileValidator("The style sheet must be a valid CSS file.", //$NON-NLS-1$ styleSheetText, new String[] { ".css" })); //$NON-NLS-1$ bindingContext.bindValue(styleSheetTextObserveTextObserveWidget, beanStyleSheetObserveValue, styleSheetStrategy, null); // return bindingContext; } @Override public boolean isPageComplete() { boolean ok = super.isPageComplete(); if (ok) { setMessage("Press finish to generate an EPUB from the Wiki markup."); //$NON-NLS-1$ } return ok; } }