Java tutorial
/** * Copyright (C) 2012 BonitaSoft S.A. * BonitaSoft, 31 rue Gustave Eiffel - 38000 Grenoble * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2.0 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.bonitasoft.studio.connector.model.definition.wizard; import java.util.Properties; import org.bonitasoft.studio.common.FileUtil; import org.bonitasoft.studio.connector.model.definition.Component; import org.bonitasoft.studio.connector.model.definition.ConnectorDefinition; import org.bonitasoft.studio.connector.model.definition.ConnectorDefinitionPackage; import org.bonitasoft.studio.connector.model.definition.Group; import org.bonitasoft.studio.connector.model.definition.Page; import org.bonitasoft.studio.connector.model.definition.WidgetComponent; import org.bonitasoft.studio.connector.model.definition.dialog.SelectPageWidgetDialog; import org.bonitasoft.studio.connector.model.definition.dialog.WidgetLabelProvider; import org.bonitasoft.studio.connector.model.definition.provider.ConnectorDefinitionItemProviderAdapterFactory; import org.bonitasoft.studio.connector.model.definition.wizard.support.WidgetInputNameEditingSupport; import org.bonitasoft.studio.connector.model.i18n.DefinitionResourceProvider; import org.bonitasoft.studio.connector.model.i18n.Messages; import org.eclipse.core.databinding.UpdateValueStrategy; import org.eclipse.core.databinding.beans.PojoProperties; 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.core.runtime.Status; import org.eclipse.emf.databinding.EMFDataBindingContext; import org.eclipse.emf.databinding.EMFObservables; import org.eclipse.emf.ecore.util.EcoreUtil; import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider; import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.databinding.viewers.ViewersObservables; import org.eclipse.jface.databinding.wizard.WizardPageSupport; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent; import org.eclipse.jface.viewers.ColumnViewerEditorActivationListener; import org.eclipse.jface.viewers.ColumnViewerEditorDeactivationEvent; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableLayout; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.TreeViewerColumn; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; /** * @author Romain Bioteau * */ public class PageWidgetsWizardPage extends WizardPage implements ISelectionChangedListener { private static final int DEFAULT_BUTTON_WIDTH_HINT = 85; private EMFDataBindingContext context; private WizardPageSupport pageSupport; private Page page; private final ConnectorDefinition definition; private final ConnectorDefinitionItemProviderAdapterFactory adapterFactory; private final Properties messages; private String displayName; private String pageDescription; private final Page originalPage; private Button editButton; private Button upButton; private Button downButton; private Button removeButton; private final DefinitionResourceProvider messageProvider; public PageWidgetsWizardPage(ConnectorDefinition definition, Page originalPage, Page page, Properties messages, DefinitionResourceProvider messageProvider) { super(PageWidgetsWizardPage.class.getName()); setTitle(Messages.widgetPageTitle); setDescription(Messages.widgetPageDesc); this.page = page; this.originalPage = originalPage; this.definition = definition; this.messages = messages; this.messageProvider = messageProvider; setDisplayName(messageProvider.getPageTitle(messages, page.getId())); setPageDescription(messageProvider.getPageDescription(messages, page.getId())); adapterFactory = new ConnectorDefinitionItemProviderAdapterFactory(); } @Override public void dispose() { super.dispose(); if (context != null) { context.dispose(); } if (pageSupport != null) { pageSupport.dispose(); } adapterFactory.dispose(); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ @Override public void createControl(Composite parent) { context = new EMFDataBindingContext(); final Composite mainComposite = new Composite(parent, SWT.NONE); mainComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); mainComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).margins(10, 10).create()); final Label pageIdLabel = new Label(mainComposite, SWT.NONE); pageIdLabel.setText(Messages.pageId + " *"); pageIdLabel.setLayoutData(GridDataFactory.fillDefaults().align(SWT.END, SWT.CENTER).create()); final Text idText = new Text(mainComposite, SWT.BORDER); idText.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); UpdateValueStrategy idStrategy = new UpdateValueStrategy(); idStrategy.setBeforeSetValidator(new IValidator() { @Override public IStatus validate(Object value) { if (value == null || value.toString().isEmpty()) { return ValidationStatus.error(Messages.idIsEmpty); } else if (value.toString().contains(" ")) { return ValidationStatus.error(Messages.noWhiteSpaceInPageID); } else if (!FileUtil.isValidName(value.toString())) { return ValidationStatus.error(Messages.idIsInvalid); } for (Page p : definition.getPage()) { if (!p.equals(originalPage) && p.getId().equals(value.toString())) { return ValidationStatus.error(Messages.idAlreadyExists); } } return Status.OK_STATUS; } }); context.bindValue(SWTObservables.observeText(idText, SWT.Modify), EMFObservables.observeValue(page, ConnectorDefinitionPackage.Literals.PAGE__ID), idStrategy, null); final Label displayNameLabel = new Label(mainComposite, SWT.NONE); displayNameLabel.setText(Messages.displayName); displayNameLabel.setLayoutData(GridDataFactory.fillDefaults().align(SWT.END, SWT.CENTER).create()); final Text displayNameText = new Text(mainComposite, SWT.BORDER); displayNameText.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); IObservableValue displayNameObs = PojoProperties.value(PageWidgetsWizardPage.class, "displayName") .observe(this); context.bindValue(SWTObservables.observeText(displayNameText, SWT.Modify), displayNameObs); final Label descriptionLabel = new Label(mainComposite, SWT.NONE); descriptionLabel.setText(Messages.pageDescLabel); descriptionLabel.setLayoutData(GridDataFactory.fillDefaults().align(SWT.END, SWT.TOP).create()); final Text descriptionText = new Text(mainComposite, SWT.BORDER | SWT.MULTI | SWT.WRAP); descriptionText .setLayoutData(GridDataFactory.fillDefaults().grab(true, false).hint(SWT.DEFAULT, 60).create()); IObservableValue descObs = PojoProperties.value(PageWidgetsWizardPage.class, "pageDescription") .observe(this); context.bindValue(SWTObservables.observeText(descriptionText, SWT.Modify), descObs); final Label inputsLabel = new Label(mainComposite, SWT.NONE); inputsLabel.setText(Messages.widgets); inputsLabel.setLayoutData(GridDataFactory.fillDefaults().align(SWT.END, SWT.TOP).create()); createWidgetViewer(mainComposite); updateButtons(new StructuredSelection()); pageSupport = WizardPageSupport.create(this, context); setControl(mainComposite); } protected void createWidgetViewer(Composite parent) { final Composite viewerComposite = new Composite(parent, SWT.NONE); viewerComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); viewerComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).create()); final TreeViewer inputsViewer = new TreeViewer(viewerComposite, SWT.BORDER | SWT.FULL_SELECTION); inputsViewer.getTree().setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); inputsViewer.getTree().setHeaderVisible(true); inputsViewer.addSelectionChangedListener(this); inputsViewer.setContentProvider(new AdapterFactoryContentProvider(adapterFactory)); inputsViewer.setLabelProvider(new AdapterFactoryLabelProvider(adapterFactory)); inputsViewer.getColumnViewerEditor() .addEditorActivationListener(new ColumnViewerEditorActivationListener() { @Override public void beforeEditorDeactivated(ColumnViewerEditorDeactivationEvent event) { } @Override public void beforeEditorActivated(ColumnViewerEditorActivationEvent event) { } @Override public void afterEditorDeactivated(ColumnViewerEditorDeactivationEvent event) { inputsViewer.setSelection(new StructuredSelection()); } @Override public void afterEditorActivated(ColumnViewerEditorActivationEvent event) { } }); final TableLayout layout = new TableLayout(); layout.addColumnData(new ColumnWeightData(70)); layout.addColumnData(new ColumnWeightData(30)); inputsViewer.getTree().setLayout(layout); TreeViewerColumn widgetColumn = new TreeViewerColumn(inputsViewer, SWT.FILL); widgetColumn.getColumn().setText(Messages.widget); widgetColumn.setLabelProvider(new ColumnLabelProvider() { WidgetLabelProvider labelProvider = new WidgetLabelProvider(); @Override public String getText(Object element) { Component comp = (Component) element; String label = messageProvider.getFieldLabel(messages, comp.getId()); if (label == null || label.isEmpty()) { label = comp.getId(); } return labelProvider.getText(comp.eClass()) + " " + label; } }); TreeViewerColumn inputNameColumn = new TreeViewerColumn(inputsViewer, SWT.FILL); inputNameColumn.getColumn().setText(Messages.input); inputNameColumn .setEditingSupport(new WidgetInputNameEditingSupport(inputsViewer, definition, page, context)); inputNameColumn.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof WidgetComponent) { return ((WidgetComponent) element).getInputName(); } else { return ""; } } }); context.bindValue(ViewersObservables.observeInput(inputsViewer), PojoProperties.value(PageWidgetsWizardPage.class, "page").observe(this)); inputsViewer.expandAll(); final Composite buttonComposite = new Composite(viewerComposite, SWT.NONE); buttonComposite.setLayoutData(GridDataFactory.fillDefaults().grab(false, true).create()); buttonComposite .setLayout(GridLayoutFactory.fillDefaults().numColumns(1).margins(0, 0).spacing(0, 3).create()); final Button addButton = new Button(buttonComposite, SWT.FLAT); addButton.setText(Messages.Add); addButton.setLayoutData(GridDataFactory.fillDefaults().grab(true, false) .hint(DEFAULT_BUTTON_WIDTH_HINT, SWT.DEFAULT).create()); addButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { SelectPageWidgetDialog dialog = new SelectPageWidgetDialog(Display.getDefault().getActiveShell(), definition, page, null, null); if (dialog.open() == Dialog.OK) { Component widget = dialog.getWidget(); messageProvider.setFieldLabel(messages, widget.getId(), dialog.getDisplayName()); messageProvider.setFieldDescription(messages, widget.getId(), dialog.getDescription()); Component component = (Component) ((IStructuredSelection) inputsViewer.getSelection()) .getFirstElement(); if (component instanceof Group) { ((Group) component).getWidget().add(widget); } else { page.getWidget().add(widget); } inputsViewer.refresh(); getContainer().updateMessage(); getContainer().updateButtons(); } } }); editButton = new Button(buttonComposite, SWT.FLAT); editButton.setText(Messages.update); editButton.setLayoutData(GridDataFactory.fillDefaults().grab(true, false) .hint(DEFAULT_BUTTON_WIDTH_HINT, SWT.DEFAULT).create()); editButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { Component component = (Component) ((IStructuredSelection) inputsViewer.getSelection()) .getFirstElement(); SelectPageWidgetDialog dialog = new SelectPageWidgetDialog(Display.getDefault().getActiveShell(), definition, page, component, EcoreUtil.copy(component)); dialog.setDisplayName(messageProvider.getFieldLabel(messages, component.getId())); dialog.setDescription(messageProvider.getFieldDescription(messages, component.getId())); if (dialog.open() == Dialog.OK) { Component widget = dialog.getWidget(); messageProvider.setFieldLabel(messages, widget.getId(), dialog.getDisplayName()); messageProvider.setFieldDescription(messages, widget.getId(), dialog.getDescription()); if (component != null && component.eContainer() instanceof Group) { Group group = (Group) component.eContainer(); int i = group.getWidget().indexOf(component); group.getWidget().remove(i); group.getWidget().add(i, widget); } else { int i = page.getWidget().indexOf(component); page.getWidget().remove(i); page.getWidget().add(i, widget); } inputsViewer.refresh(); getContainer().updateMessage(); getContainer().updateButtons(); } } }); upButton = new Button(buttonComposite, SWT.FLAT); upButton.setText(Messages.up); upButton.setLayoutData(GridDataFactory.fillDefaults().grab(true, false) .hint(DEFAULT_BUTTON_WIDTH_HINT, SWT.DEFAULT).create()); upButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { Component selectedWidget = (Component) ((IStructuredSelection) inputsViewer.getSelection()) .getFirstElement(); int index = page.getWidget().indexOf(selectedWidget); if (index > 0) { page.getWidget().move(index - 1, selectedWidget); } inputsViewer.refresh(); } }); downButton = new Button(buttonComposite, SWT.FLAT); downButton.setText(Messages.down); downButton.setLayoutData(GridDataFactory.fillDefaults().grab(true, false) .hint(DEFAULT_BUTTON_WIDTH_HINT, SWT.DEFAULT).create()); downButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { Component selectedWidget = (Component) ((IStructuredSelection) inputsViewer.getSelection()) .getFirstElement(); int index = page.getWidget().indexOf(selectedWidget); if (index < page.getWidget().size() - 1) { page.getWidget().move(index + 1, selectedWidget); } inputsViewer.refresh(); } }); removeButton = new Button(buttonComposite, SWT.FLAT); removeButton.setText(Messages.remove); removeButton.setLayoutData(GridDataFactory.fillDefaults().grab(true, false) .hint(DEFAULT_BUTTON_WIDTH_HINT, SWT.DEFAULT).create()); removeButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { page.getWidget().removeAll(((IStructuredSelection) inputsViewer.getSelection()).toList()); inputsViewer.refresh(); } }); } public String getDisplayName() { return displayName; } public void setDisplayName(String displayName) { this.displayName = displayName; } public String getPageDescription() { return pageDescription; } public void setPageDescription(String pageDescription) { this.pageDescription = pageDescription; } public Page getPage() { return page; } public void setPage(Page page) { this.page = page; } @Override public void selectionChanged(SelectionChangedEvent event) { updateButtons(event.getSelection()); } private void updateButtons(ISelection selection) { if (editButton != null && !editButton.isDisposed()) { editButton.setEnabled(!selection.isEmpty()); } if (upButton != null && !upButton.isDisposed()) { upButton.setEnabled(!selection.isEmpty()); } if (downButton != null && !downButton.isDisposed()) { downButton.setEnabled(!selection.isEmpty()); } if (removeButton != null && !removeButton.isDisposed()) { removeButton.setEnabled(!selection.isEmpty()); } } }