Java tutorial
/** * Copyright (C) 2009 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.implementation.wizard; import java.util.ArrayList; import java.util.Collections; import java.util.List; import org.bonitasoft.studio.common.jface.TreeExplorer; import org.bonitasoft.studio.connector.model.definition.AbstractUniqueDefinitionContentProvider; import org.bonitasoft.studio.connector.model.definition.Category; import org.bonitasoft.studio.connector.model.definition.ConnectorDefinition; import org.bonitasoft.studio.connector.model.definition.wizard.ConnectorDefinitionExplorerLabelProvider; import org.bonitasoft.studio.connector.model.i18n.DefinitionResourceProvider; import org.bonitasoft.studio.connector.model.i18n.Messages; import org.bonitasoft.studio.connector.model.implementation.ConnectorImplementation; import org.eclipse.core.databinding.UpdateValueStrategy; import org.eclipse.core.databinding.conversion.Converter; import org.eclipse.core.databinding.validation.IValidator; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.emf.databinding.EMFDataBindingContext; import org.eclipse.emf.ecore.resource.Resource; import org.eclipse.jdt.ui.wizards.NewTypeWizardPage; import org.eclipse.jface.databinding.wizard.WizardPageSupport; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ContentViewer; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; import org.eclipse.jface.viewers.ViewerSorter; 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.Group; import org.eclipse.swt.widgets.Label; /** * @author Romain Bioteau * */ public abstract class AbstractDefinitionSelectionImpementationWizardPage extends NewTypeWizardPage implements ISelectionChangedListener { protected ConnectorImplementation implementation; protected ConnectorDefinition selectedDefinition; protected EMFDataBindingContext context; protected UpdateValueStrategy defIdStrategy; protected UpdateValueStrategy defModelStrategy; protected ComboViewer versionCombo; protected TreeExplorer explorer; private WizardPageSupport pageSupport; private Boolean checkOnlyCustom; private Button onlyCustomCheckbox; private final DefinitionResourceProvider messageProvider; protected final List<ConnectorDefinition> definitions; private ViewerFilter customConnectorFilter = new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { if (element instanceof ConnectorDefinition) { final Resource eResource = ((ConnectorDefinition) element).eResource(); if (eResource != null) { IPath rootPath = ResourcesPlugin.getWorkspace().getRoot().getLocation(); return rootPath.isPrefixOf(Path.fromOSString(eResource.getURI().toFileString())); } } return false; } }; public AbstractDefinitionSelectionImpementationWizardPage(ConnectorImplementation implementation, List<ConnectorImplementation> existingImpl, List<ConnectorDefinition> definitions, String pageTitle, String pageDescription, DefinitionResourceProvider messageProvider) { super(true, AbstractDefinitionSelectionImpementationWizardPage.class.getName()); setTitle(pageTitle); setDescription(pageDescription); this.implementation = implementation; this.messageProvider = messageProvider; this.definitions = definitions; checkOnlyCustom = implementation.getDefinitionId() == null; } public AbstractDefinitionSelectionImpementationWizardPage(List<ConnectorImplementation> existingImpl, List<ConnectorDefinition> definitions, String pageTitle, String pageDescription, DefinitionResourceProvider messageProvider) { super(true, AbstractDefinitionSelectionImpementationWizardPage.class.getName()); setTitle(pageTitle); setDescription(pageDescription); this.messageProvider = messageProvider; this.definitions = definitions; checkOnlyCustom = false; } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ @Override public void createControl(Composite parent) { context = new EMFDataBindingContext(); Composite mainComposite = new Composite(parent, SWT.NONE); mainComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).margins(10, 10).create()); explorer = createTreeExplorer(mainComposite); final Label definitionVersionLabel = new Label(mainComposite, SWT.NONE); definitionVersionLabel.setText(Messages.definitionVersion); definitionVersionLabel.setLayoutData(GridDataFactory.fillDefaults().align(SWT.END, SWT.CENTER).create()); versionCombo = new ComboViewer(mainComposite, SWT.READ_ONLY | SWT.BORDER); versionCombo.getCombo().setLayoutData(GridDataFactory.fillDefaults().create()); versionCombo.setContentProvider(new ArrayContentProvider()); versionCombo.setLabelProvider(new LabelProvider()); versionCombo.getCombo().setEnabled(false); versionCombo.setSorter(new ViewerSorter()); final Group descriptionGroup = new Group(mainComposite, SWT.NONE); descriptionGroup.setText(Messages.description); descriptionGroup.setLayout(GridLayoutFactory.fillDefaults().numColumns(1).margins(10, 10).create()); descriptionGroup.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).span(2, 1).create()); final Label descriptionLabel = new Label(descriptionGroup, SWT.WRAP); descriptionLabel.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); explorer.getRightTableViewer().addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { Object sel = ((IStructuredSelection) event.getSelection()).getFirstElement(); if (sel instanceof ConnectorDefinition) { final String defId = ((ConnectorDefinition) sel).getId(); List<String> versions = new ArrayList<String>(); for (ConnectorDefinition def : definitions) { if (defId.equals(def.getId())) { versions.add(def.getVersion()); } } versionCombo.setInput(versions); String version = null; if (implementation != null) { version = implementation.getDefinitionVersion(); } if (version != null && versions.contains(version)) { versionCombo.setSelection(new StructuredSelection(version)); } else { versionCombo.setSelection(new StructuredSelection( versionCombo.getCombo().getItem(versionCombo.getCombo().getItemCount() - 1))); } versionCombo.getCombo().setEnabled(versions.size() > 1); if (versions.size() == 1) { for (ConnectorDefinition def : definitions) { if (defId.equals(def.getId())) { descriptionLabel.setText(messageProvider.getConnectorDefinitionDescription(def)); descriptionGroup.layout(true); break; } } } } else { versionCombo.setInput(Collections.emptyList()); descriptionLabel.setText(""); descriptionGroup.layout(true); } } }); versionCombo.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { Object sel = ((IStructuredSelection) explorer.getRightTableViewer().getSelection()) .getFirstElement(); if (sel instanceof ConnectorDefinition) { final String defId = ((ConnectorDefinition) sel).getId(); final String version = (String) ((IStructuredSelection) event.getSelection()).getFirstElement(); if (defId != null && version != null) { for (ConnectorDefinition def : definitions) { if (defId.equals(def.getId()) && version.equals(def.getVersion())) { descriptionLabel.setText(messageProvider.getConnectorDefinitionDescription(def)); descriptionGroup.layout(true); break; } } } } else { descriptionLabel.setText(""); descriptionGroup.layout(true); } } }); defIdStrategy = new UpdateValueStrategy(); defIdStrategy.setConverter(new Converter(ConnectorDefinition.class, String.class) { @Override public Object convert(Object from) { if (from instanceof ConnectorDefinition) { return ((ConnectorDefinition) from).getId(); } return null; } }); defIdStrategy.setBeforeSetValidator(new IValidator() { @Override public IStatus validate(Object value) { // if(value == null || value.toString().isEmpty()){ // return ValidationStatus.error(Messages.missingDefinition) ; // } return Status.OK_STATUS; } }); defModelStrategy = new UpdateValueStrategy(); defModelStrategy.setConverter(new Converter(String.class, ConnectorDefinition.class) { @Override public Object convert(Object from) { if (from instanceof String) { return getConnectorDefinitionFromId((String) from); } return null; } }); updateOnlyCustomCheckbox(); bindValue(); setControl(mainComposite); } @SuppressWarnings("unchecked") protected ConnectorDefinition getConnectorDefinitionFromId(String definitionId) { List<Object> definitions = (List<Object>) explorer.getRightTableViewer().getInput(); for (Object c : definitions) { if (c instanceof ConnectorDefinition && ((ConnectorDefinition) c).getId().equals(definitionId)) { return (ConnectorDefinition) c; } } return null; } protected TreeExplorer createTreeExplorer(Composite mainComposite) { final TreeExplorer explorer = new TreeExplorer(mainComposite, SWT.NONE); explorer.setLayoutData( GridDataFactory.fillDefaults().grab(true, true).hint(SWT.DEFAULT, 290).span(2, 1).create()); final Composite additionalComposite = explorer.getAdditionalComposite(); additionalComposite.setLayoutData(GridDataFactory.fillDefaults().grab(false, false).create()); onlyCustomCheckbox = new Button(additionalComposite, SWT.CHECK); onlyCustomCheckbox.setText(Messages.onlyCustomConnector); onlyCustomCheckbox.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create()); onlyCustomCheckbox.setSelection(checkOnlyCustom); final ITreeContentProvider contentProvider = getContentProvider(); final ITreeContentProvider customContentProvider = getCustomContentProvider(); explorer.setContentProvider(customContentProvider); explorer.setLabelProvider(new ConnectorDefinitionExplorerLabelProvider(messageProvider)); explorer.addRightTreeFilter(customConnectorFilter); explorer.addLeftTreeFilter(new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { if (AbstractUniqueDefinitionContentProvider.ROOT.equals(element)) { return true; } if (element instanceof Category) { if (!((ITreeContentProvider) ((ContentViewer) viewer).getContentProvider()) .hasChildren(element)) { return false; } for (Object c : ((ITreeContentProvider) ((ContentViewer) viewer).getContentProvider()) .getChildren(element)) { if (c instanceof ConnectorDefinition) { return true; } else { if (select(viewer, element, c)) { return true; } } } } else if (element instanceof ConnectorDefinition) { return false; } return false; } }); explorer.addRightTreeFilter(new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { return element instanceof ConnectorDefinition; } }); explorer.setLeftHeader(Messages.categoriesLabel); explorer.setRightHeader(Messages.connectorDefinition); explorer.setInput(new Object()); explorer.geLeftTreeViewer() .setExpandedElements(new Object[] { AbstractUniqueDefinitionContentProvider.ROOT }); onlyCustomCheckbox.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { updateOnlyCustomCheckbox(); } }); Object[] rootElement = contentProvider.getElements(new Object()); List<Object> flattenTree = new ArrayList<Object>(); getFlattenTree(flattenTree, rootElement, contentProvider); explorer.getRightTableViewer().setInput(flattenTree); return explorer; } private void updateOnlyCustomCheckbox() { final ITreeContentProvider customContentProvider = getCustomContentProvider(); final ITreeContentProvider contentProvider = getContentProvider(); if (onlyCustomCheckbox.getSelection()) { explorer.setContentProvider(customContentProvider); explorer.addRightTreeFilter(customConnectorFilter); } else { explorer.setContentProvider(contentProvider); explorer.removeRightTreeFilter(customConnectorFilter); } explorer.setInput(new Object()); explorer.geLeftTreeViewer() .setExpandedElements(new Object[] { AbstractUniqueDefinitionContentProvider.ROOT }); } private void getFlattenTree(List<Object> flattenTree, Object[] rootElement, ITreeContentProvider contentProvider) { for (Object element : rootElement) { flattenTree.add(element); if (contentProvider.hasChildren(element)) { getChildrenFlattenTree(flattenTree, element, contentProvider); } } } private void getChildrenFlattenTree(List<Object> flattenTree, Object parentElement, ITreeContentProvider contentProvider) { for (Object element : contentProvider.getChildren(parentElement)) { flattenTree.add(element); if (contentProvider.hasChildren(element)) { getChildrenFlattenTree(flattenTree, element, contentProvider); } } } protected abstract ITreeContentProvider getContentProvider(); @Override public void setVisible(boolean visible) { super.setVisible(visible); if (visible && pageSupport == null) { pageSupport = WizardPageSupport.create(this, context); } } @Override public void dispose() { super.dispose(); if (pageSupport != null) { pageSupport.dispose(); } if (context != null) { context.dispose(); } } @Override public void selectionChanged(SelectionChangedEvent event) { } protected abstract ITreeContentProvider getCustomContentProvider(); protected abstract void bindValue(); public void setSelectedConnectorDefinition(ConnectorDefinition selectedDefinition) { this.selectedDefinition = selectedDefinition; } public ConnectorDefinition getSelectedConnectorDefinition() { return selectedDefinition; } }