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/**
* <copyright>
*
* Copyright (c) 2008 itemis AG 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:
* itemis AG - Initial API and implementation
*
* </copyright>
*
*/
package org.eclipse.emf.editor.ui.binding;
import java.util.List;
import org.eclipse.core.databinding.Binding;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.databinding.EMFDataBindingContext;
import org.eclipse.emf.databinding.edit.EMFEditObservables;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.impl.EEnumImpl;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
import org.eclipse.emf.editor.EEPlugin;
import org.eclipse.emf.editor.oaw.OawFacade;
import org.eclipse.emf.editor.ui.ProposalCreator;
import org.eclipse.jface.bindings.keys.KeyStroke;
import org.eclipse.jface.bindings.keys.ParseException;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.databinding.viewers.ViewersObservables;
import org.eclipse.jface.fieldassist.ContentProposalAdapter;
import org.eclipse.jface.fieldassist.ControlDecoration;
import org.eclipse.jface.fieldassist.FieldDecoration;
import org.eclipse.jface.fieldassist.FieldDecorationRegistry;
import org.eclipse.jface.fieldassist.SimpleContentProposalProvider;
import org.eclipse.jface.fieldassist.TextContentAdapter;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.forms.widgets.FormToolkit;
/**
* @author Dennis Huebner
*
*/
public class EmfSwtBindingFactory {
private Composite parent = null;
private FormToolkit toolkit = null;
private final EObject owner;
private final EditingDomain domain;
private final EMFDataBindingContext edbc;
private final AdapterFactory adapterFactory;
private final ProposalCreator proposalcreator;
public static final String EOBJECT_KEY = EcorePackage.Literals.EOBJECT
.getName();
public static final String ESTRUCTURALFEATURE_KEY = EcorePackage.Literals.ESTRUCTURAL_FEATURE
.getName();
public EmfSwtBindingFactory(AdapterFactory adapterFactory,
EditingDomain domain, EObject owner, Composite parent,
FormToolkit toolkit, OawFacade facade) {
this.adapterFactory = adapterFactory;
this.edbc = new EMFDataBindingContext();
this.domain = domain;
this.proposalcreator = new ProposalCreator(domain, facade);
this.owner = owner;
this.parent = parent;
this.toolkit = toolkit;
}
public Control create(EObject eObject) {
Control retVal = null;
if (eObject instanceof EStructuralFeature) {
retVal = createForEStructuralFeature((EStructuralFeature) eObject);
}
return retVal;
}
private Control createForEStructuralFeature(EStructuralFeature feature) {
Control retVal = null;
if (feature.isMany()) {
retVal = bindList(feature);
} else {
retVal = bindValue(feature);
}
setupControl(feature, retVal);
return retVal;
}
private Control bindList(EStructuralFeature feature) {
IObservableList source = EMFEditObservables.observeList(domain, owner,
feature);
List<?> choice = proposalcreator.proposals(owner, feature);
MultipleFeatureControl mfc = new MultipleFeatureControl(parent,
toolkit, new AdapterFactoryLabelProvider(adapterFactory),
owner, feature, choice);
IObservableList target = new SelectionProviderMultipleSelectionObservableList(
SWTObservables.getRealm(Display.getDefault()), mfc
.getInternalSelectionProvider(), Object.class);
Binding binding = edbc.bindList(target, source, null, null);
binding.updateModelToTarget();
return mfc;
}
private Control bindValue(EStructuralFeature feature) {
Control retVal = null;
IObservableValue source = EMFEditObservables.observeValue(domain,
owner, feature);
IObservableValue target = null;
if (feature.getEType().equals(EcorePackage.Literals.EBOOLEAN)
|| feature.getEType().equals(
EcorePackage.Literals.EBOOLEAN_OBJECT)
|| (feature.getEType() instanceof EDataType && (feature
.getEType().getInstanceClass() == Boolean.class || feature
.getEType().getInstanceClass() == Boolean.TYPE))) {
Button b = toolkit.createButton(parent, "", SWT.CHECK);
target = SWTObservables.observeSelection(b);
retVal = b;
} else if (feature instanceof EReference
|| feature.getEType() instanceof EEnumImpl) {
ComboViewer combo = new ComboViewer(parent, SWT.READ_ONLY);
toolkit.adapt(combo.getCombo());
combo.setContentProvider(new ArrayContentProvider());
combo.setLabelProvider(new AdapterFactoryLabelProvider(
adapterFactory));
combo.setInput(proposalcreator.proposals(owner, feature));
target = ViewersObservables.observeSingleSelection(combo);
retVal = combo.getCombo();
} else {
Text t = toolkit.createText(parent, new String());
t.setData(FormToolkit.KEY_DRAW_BORDER, FormToolkit.TREE_BORDER);
List<?> proposals = proposalcreator.proposals(owner, feature);
if (proposals != null && !proposals.isEmpty()) {
// TODO prevert adding null to a list, for example a Collection
// Type
while (proposals.remove(null)) {
// clear null entries
}
ControlDecoration field = new ControlDecoration(t, SWT.BORDER);
FieldDecoration requiredFieldIndicator = FieldDecorationRegistry
.getDefault().getFieldDecoration(
FieldDecorationRegistry.DEC_CONTENT_PROPOSAL);
field.setImage(requiredFieldIndicator.getImage());
field.setDescriptionText(requiredFieldIndicator
.getDescription());
KeyStroke keyStroke = null;
String string = new String();
try {
string = "Ctrl+Space";
keyStroke = KeyStroke.getInstance(string);
} catch (ParseException e) {
EEPlugin.getDefault().getLog().log(
new Status(IStatus.ERROR, EEPlugin.PLUGIN_ID,
"Error while parse: " + string, e));
}
new ContentProposalAdapter(t, new TextContentAdapter(),
new SimpleContentProposalProvider(proposals
.toArray(new String[] {})), keyStroke, null);
}
target = SWTObservables.observeText(t, SWT.Modify);
retVal = t;
}
edbc.bindValue(target, source, null, null);
return retVal;
}
private void setupControl(EStructuralFeature f, Control c) {
// disable unchangeable and unserializable
c.setEnabled(f.isChangeable()
&& (!(f.getEType() instanceof EDataType && !((EDataType) f
.getEType()).isSerializable())));
c.setData(EmfSwtBindingFactory.ESTRUCTURALFEATURE_KEY, f);
c.setData(EmfSwtBindingFactory.EOBJECT_KEY, owner);
c.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
}
public void dispose() {
edbc.dispose();
parent.dispose();
// toolkit.dispose();
}
}
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