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/*******************************************************************************
* Copyright (c) 2009-2012 Mia-Software.
* 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:
* Nicolas Bros (Mia-Software)
* Nicolas Guyomar (Mia-Software) - Bug 339874 - Infra QuerySelectionDialog should have a "querySet" icon
* Nicolas Bros (Mia-Software) - Bug 366367 - To be able to change the "CanBePresentedInTheTable" query
* Nicolas Bros (Mia-Software) - Bug 370806 - [table] rewrite the "allowed contents" query selection dialog for v0.2
* Vincent Lorenzo (CEA-LIST) - Bug 372644 - Create Customizable tooltips for the TreeViewer using a CustomizableLabelProvider
* Vincent Lorenzo (CEA-LIST) - Bug 357621 - Improve the label displayed for Customization and Facets
* Gregoire Dupe (Mia-Software) - Bug 375087 - [Table] ITableWidget.addColumn(List<ETypedElement>, List<FacetSet>)
* Gregoire Dupe (Mia-Software) - Bug 372626 - Aggregates
* Nicolas Bros (Mia-Software) - Bug 370806 - [table] rewrite the "allowed contents" query selection dialog for v0.2
*******************************************************************************/
package org.eclipse.emf.facet.efacet.ui.internal.dialogs;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.ETypedElement;
import org.eclipse.emf.facet.custom.core.ICustomizationManager;
import org.eclipse.emf.facet.efacet.ui.internal.Activator;
import org.eclipse.emf.facet.efacet.ui.internal.Messages;
import org.eclipse.emf.facet.efacet.ui.internal.exported.dialog.IETypedElementSelectionDialogInternal;
import org.eclipse.emf.facet.efacet.ui.internal.widget.ETypedElementSelectionControlManager;
import org.eclipse.emf.facet.efacet.ui.internal.widget.IETypedElementSelectionControlManager;
import org.eclipse.emf.facet.util.ui.internal.exported.dialog.IDialogCallbackWithPreCommit;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.viewers.IOpenListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.OpenEvent;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.dialogs.SelectionStatusDialog;
/**
* A dialog to select an {@link ETypedElement} among a tree of {@link EObject}s that are children of a given set of root
* {@link EObject}s
*/
public class ETypedElementSelectionDialog<T2, D> extends SelectionStatusDialog
implements IETypedElementSelectionDialogInternal<D> { // NOPMD
// note: the dialog should be large enough to see the validator message
private static final int DEFAULT_WIDTH = 550;
private static final int DEFAULT_HEIGHT = 550;
private final boolean allowEmpty;
private final IDialogCallbackWithPreCommit<List<ETypedElement>, T2, D> callback;
private final Collection<? extends ETypedElement> availableElements;
private final int selectionMaxSize;
private final ICustomizationManager customManager;
private IETypedElementSelectionControlManager manager;
private final Collection<? extends EPackage> knownEPackage;
/**
* @param eTypedElements
* the list of ETypedElements that can be selected
* @param selectionMaxSize
* the maximum number of typed elements that the user can select
* @param allowEmpty
* whether to allow the user to select no ETypedElement (i.e : select <code>null</code>)
* @param callback
* called when the dialog closes
* @param parentShell
* the parent shell
* @param customManager
* the customization manager used by the ICustomizableLabelProvider
*/
public ETypedElementSelectionDialog(final Collection<? extends ETypedElement> eTypedElements,
final int selectionMaxSize, final boolean allowEmpty,
final IDialogCallbackWithPreCommit<List<ETypedElement>, T2, D> callback,
final Shell parentShell, final ICustomizationManager customManager,
final Collection<? extends EPackage> knownEPackage) {
super(parentShell);
this.availableElements = eTypedElements;
this.selectionMaxSize = selectionMaxSize;
this.allowEmpty = allowEmpty;
this.callback = callback;
this.customManager = customManager;
this.knownEPackage = knownEPackage;
setHelpAvailable(false);
}
@Override
protected Control createDialogArea(final Composite parent) {
final Composite composite = (Composite) super.createDialogArea(parent);
this.manager = new ETypedElementSelectionControlManager(composite,
this.selectionMaxSize, this.allowEmpty, this.customManager,
this.knownEPackage);
this.manager.createContents();
this.manager.setAvailableETypedElements(this.availableElements);
// double-click or enter to choose the selected typed element
this.manager.addOpenListener(new IOpenListener() {
public void open(final OpenEvent event) {
ETypedElementSelectionDialog.this.okPressed();
}
});
this.manager.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(final SelectionChangedEvent event) {
updateValidationStatus();
}
});
return composite;
}
protected void updateValidationStatus() {
updateStatus(this.manager.getValidationStatus());
}
@Override
protected void configureShell(final Shell shell) {
super.configureShell(shell);
if (this.selectionMaxSize > 1) {
shell.setText(Messages.ETypedElementSelectionDialog_dialogTitleMultiSelection);
} else {
shell.setText(Messages.ETypedElementSelectionDialog_dialogTitle);
}
// TODO: image for ETypedElement
// shell.setImage(...);
}
@Override
protected boolean isResizable() {
return true;
}
@Override
protected IDialogSettings getDialogBoundsSettings() {
final String sectionName = this.getClass().getName() + ".settings"; //$NON-NLS-1$
final IDialogSettings settings = Activator.getDefault().getDialogSettings();
IDialogSettings section = settings.getSection(sectionName);
if (section == null) {
section = settings.addNewSection(sectionName);
// cf Dialog#DIALOG_WIDTH
section.put("DIALOG_WIDTH", ETypedElementSelectionDialog.DEFAULT_WIDTH); //$NON-NLS-1$
section.put("DIALOG_HEIGHT", ETypedElementSelectionDialog.DEFAULT_HEIGHT); //$NON-NLS-1$
}
return section;
}
public boolean isErrorStatus() {
final IStatus validationStatus = this.manager.getValidationStatus();
return validationStatus == null || validationStatus.getSeverity() >= IStatus.ERROR;
}
@Override
protected void okPressed() {
if (isErrorStatus()) {
throw new IllegalStateException("The current selection is not valid"); //$NON-NLS-1$
}
super.okPressed();
}
public D pressOk() {
okPressed();
return null;
}
public void pressCancel() {
setReturnCode(Window.CANCEL);
close();
}
@Override
public boolean close() {
final boolean result = super.close();
invokeCallback();
return result;
}
private void invokeCallback() {
if (this.callback == null) {
return;
}
if (getReturnCode() == Window.OK) {
this.callback.committed(getSelectedETypedElements(), null);
}
}
public List<ETypedElement> getSelectedETypedElements() {
List<ETypedElement> currentlySelected = new ArrayList<ETypedElement>();
if (this.manager.isDisposed()) {
final Object[] result = getResult();
if (result == null) {
throw new UnsupportedOperationException("No selection available because the dialog was canceled"); //$NON-NLS-1$
}
for (Object current : result) {
currentlySelected.add((ETypedElement) current);
}
} else {
currentlySelected = this.manager.computeResult();
}
return Collections.unmodifiableList(currentlySelected);
}
public ETypedElement getFirstSelectedETypedElement() {
ETypedElement result = null;
final List<ETypedElement> typedElements = getSelectedETypedElements();
if (typedElements != null && !typedElements.isEmpty()) {
result = typedElements.get(0);
}
return result;
}
public void setSelectedETypedElements(final List<? extends ETypedElement> newSelection) {
if (newSelection == null) {
throw new IllegalArgumentException();
}
this.manager.setSelectedETypedElements(newSelection);
updateValidationStatus();
}
public void setSelection(final IStructuredSelection selection) {
this.manager.setSelection(selection);
updateValidationStatus();
}
@Override
protected void computeResult() {
// we build the result
final List<ETypedElement> currentSelection = this.manager.computeResult();
setResult(currentSelection);
}
public boolean isOkButtonEnabled() {
return getOkButton().isEnabled();
}
}
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