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/*
* Copyright (c) 2013 Eike Stepper (Berlin, Germany) 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:
* Christian W. Damus (CEA LIST) - initial API and implementation
*/
package org.eclipse.emf.cdo.security.internal.ui.editor;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.databinding.EMFDataBindingContext;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.observable.value.WritableValue;
import org.eclipse.jface.databinding.swt.ISWTObservableValue;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.forms.AbstractFormPart;
import org.eclipse.ui.forms.IFormPart;
import org.eclipse.ui.forms.IManagedForm;
import org.eclipse.ui.forms.widgets.FormToolkit;
import org.eclipse.ui.forms.widgets.Section;
import org.eclipse.ui.forms.widgets.TableWrapData;
import org.eclipse.ui.forms.widgets.TableWrapLayout;
/**
* Common framework for a part of a form page that is an SWT {@link Section}
* presenting some object, list/table of objects, or attributes of an object.
*
* @author Christian W. Damus (CEA LIST)
*/
public abstract class AbstractSectionPart<T extends EObject> extends AbstractFormPart
{
private final EditingDomain domain;
private final AdapterFactory adapterFactory;
private final Class<T> inputType;
private final EClass inputEClass;
private T input;
private DataBindingContext context;
private WritableValue value;
private IActionBars editorActionBars;
public AbstractSectionPart(Class<T> inputType, EClass inputEClass, EditingDomain domain, AdapterFactory adapterFactory)
{
this.inputType = inputType;
this.inputEClass = inputEClass;
this.domain = domain;
this.adapterFactory = adapterFactory;
}
@Override
public void initialize(IManagedForm form)
{
super.initialize(form);
initDatabindings();
}
public void setEditorActionBars(IActionBars actionBars)
{
this.editorActionBars = actionBars;
}
protected IActionBars getEditorActionBars()
{
return editorActionBars;
}
protected void initDatabindings()
{
context = new EMFDataBindingContext();
value = new WritableValue(context.getValidationRealm());
}
@Override
public void dispose()
{
if (context != null)
{
context.dispose();
}
super.dispose();
}
@Override
public boolean setFormInput(Object input)
{
boolean result = false;
this.input = null;
if (inputType.isInstance(input))
{
this.input = inputType.cast(input);
result = true;
}
value.setValue(this.input);
return result;
}
public void selectionChanged(IFormPart part, ISelection selection)
{
if (selection instanceof IStructuredSelection)
{
IStructuredSelection sel = (IStructuredSelection)selection;
if (!sel.isEmpty())
{
setFormInput(sel.getFirstElement());
}
}
}
public final Class<T> getInputType()
{
return inputType;
}
public final EClass getInputEClass()
{
return inputEClass;
}
protected T getInput()
{
return input;
}
protected EditingDomain getEditingDomain()
{
return domain;
}
protected AdapterFactory getAdapterFactory()
{
return adapterFactory;
}
protected Realm getRealm()
{
return getContext().getValidationRealm();
}
protected DataBindingContext getContext()
{
return context;
}
protected IObservableValue getValue()
{
return value;
}
protected ISWTObservableValue observeText(Text text)
{
return SWTObservables.observeText(text, new int[] { SWT.DefaultSelection, SWT.FocusOut });
}
public void createContents(Composite parent)
{
FormToolkit toolkit = getManagedForm().getToolkit();
Section section = toolkit.createSection(parent, Section.SHORT_TITLE_BAR);
section.setText(getTitle());
if (parent.getLayout() instanceof TableWrapLayout)
{
section.setLayoutData(new TableWrapData(TableWrapData.FILL_GRAB, TableWrapData.FILL_GRAB));
}
else if (parent.getLayout() instanceof GridLayout)
{
section.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
}
Composite body = toolkit.createComposite(section);
section.setClient(body);
createContents(body, toolkit);
createActionToolbar(section, toolkit);
}
protected abstract String getTitle();
protected abstract void createContents(Composite parent, FormToolkit toolkit);
protected void createActionToolbar(Section section, FormToolkit toolkit)
{
// Pass
}
}
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