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package org.eclipse.papyrus.infra.table.properties.provider;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry;
import org.eclipse.gmf.runtime.emf.type.core.IClientContext;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.services.edit.internal.context.TypeContext;
import org.eclipse.papyrus.infra.table.properties.Activator;
import org.eclipse.papyrus.infra.table.properties.messages.Messages;
import org.eclipse.papyrus.infra.widgets.editors.AbstractEditor;
import org.eclipse.papyrus.infra.widgets.editors.ICommitListener;
import org.eclipse.papyrus.infra.widgets.editors.StringEditor;
import org.eclipse.papyrus.infra.widgets.providers.AbstractStaticContentProvider;
import org.eclipse.papyrus.infra.widgets.providers.IGraphicalContentProvider;
import org.eclipse.papyrus.infra.widgets.providers.PatternViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
public class ElementTypeContentProvider extends AbstractStaticContentProvider implements ITreeContentProvider, IGraphicalContentProvider {
private Set<String> values = null;
public String[] getElements() {
if(this.values == null) {
this.values = getValues();
}
return this.values.toArray(new String[values.size()]);
}
private Set<String> getValues() {
final Set<String> allValues = getAllPossiblesValues();
return allValues;
}
private Set<String> getAllPossiblesValues() {
IClientContext clientContext = null;
try {
clientContext = TypeContext.getContext();
} catch (ServiceException e1) {
Activator.log.error(e1);
}
IElementType[] types = ElementTypeRegistry.getInstance().getElementTypes(clientContext);
final Set<String> ids = new TreeSet<String>();
for(IElementType iElementType : types) {
final String id = iElementType.getId();
if(id.contains("sysml.stereotype.") || id.contains("uml.stereotype.")) {//FIXME should not be done here -> should be adapted in the Papyrus Table V3 //$NON-NLS-1$ //$NON-NLS-2$
//nothing to do
} else {
ids.add(id);
}
}
return ids;
}
public Object[] getChildren(Object parentElement) {
return new Object[0];
}
public Object getParent(Object element) {
return null; //Flat provider
}
public boolean hasChildren(Object element) {
return false;
}
/**
* {@inheritDoc}
*/
public void createBefore(Composite parent) {
createPatternFilter(parent);
}
protected ViewerFilter patternFilter;
private String currentFilterPattern = ""; //$NON-NLS-1$
private StructuredViewer viewer;
protected void createPatternFilter(Composite parent) {
StringEditor editor = new StringEditor(parent, SWT.NONE);
editor.setLabel("Filter:"); //$NON-NLS-1$
editor.setToolTipText(Messages.ElementTypeContentProvider_EnterTheNameOfTheWantedElement);
editor.setValidateOnDelay(true);
patternFilter = new PatternViewerFilter();
((PatternViewerFilter)patternFilter).setPattern(currentFilterPattern);
editor.addCommitListener(new ICommitListener() {
public void commit(AbstractEditor editor) {
String filterPattern = (String)((StringEditor)editor).getValue();
((PatternViewerFilter)patternFilter).setPattern(filterPattern);
viewer.refresh();
if(!("".equals(filterPattern) || currentFilterPattern.equals(filterPattern))) { //$NON-NLS-1$
Object firstMatch = getFirstMatchingElement(null);
if(firstMatch != null) {
// revealSemanticElement(Collections.singletonList(firstMatch));
}
currentFilterPattern = filterPattern;
}
}
});
List<ViewerFilter> filters = new LinkedList<ViewerFilter>(Arrays.asList(viewer.getFilters()));
filters.add(patternFilter);
viewer.setFilters(filters.toArray(new ViewerFilter[filters.size()]));
}
public void createAfter(Composite parent) {
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
super.inputChanged(viewer, oldInput, newInput);
this.viewer = (StructuredViewer)viewer;
}
/**
* Returns the first (encapsulated) element matching the current filters
*
* @return
*/
protected Object getFirstMatchingElement(Object parent) {
//Browse from the root element
if(parent == null) {
for(Object parentElement : getElements(viewer.getInput())) {
Object firstMatch = getFirstMatchingElement(parentElement);
if(firstMatch != null) {
return firstMatch;
}
}
return null;
}
for(ViewerFilter filter : viewer.getFilters()) {
if(!filter.select(viewer, getParent(parent), parent)) {
return null;
}
}
//Browse the child elements
for(Object childElement : getChildren(parent)) {
Object firstMatch = getFirstMatchingElement(childElement);
if(firstMatch != null) {
return firstMatch;
}
}
//No match found
return null;
}
}
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