/**
* Return the unsorted intersection of all the <code>IPropertyDescriptor</code>s for the objects.
*
* @return List
*/
private List computeMergedPropertyDescriptors() {
if (values.length == 0) {
return new ArrayList(0);
}
IPropertySource firstSource = getPropertySource(values[0]);
if (firstSource == null) {
return new ArrayList(0);
}
if (values.length == 1) {
return Arrays.asList(firstSource.getPropertyDescriptors());
}
// get all descriptors from each object
Map[] propertyDescriptorMaps = new Map[values.length];
for (int i = 0; i < values.length; i++) {
Object object = values[i];
IPropertySource source = getPropertySource(object);
if (source == null) {
// if one of the selected items is not a property source
// then we show no properties
return new ArrayList(0);
}
// get the property descriptors keyed by id
propertyDescriptorMaps[i] = computePropertyDescriptorsFor(source);
}
// intersect
Map intersection = propertyDescriptorMaps[0];
for (int i = 1; i < propertyDescriptorMaps.length; i++) {
// get the current ids
Object[] ids = intersection.keySet().toArray();
for (int j = 0; j < ids.length; j++) {
Object object = propertyDescriptorMaps[i].get(ids[j]);
if (object == null
||
// see if the descriptors (which have the same id) are
// compatible
!((IPropertyDescriptor) intersection.get(ids[j]))
.isCompatibleWith((IPropertyDescriptor) object)) {
intersection.remove(ids[j]);
}
}
}
// sorting is handled in the PropertySheetViewer, return unsorted (in
// the original order)
ArrayList result = new ArrayList(intersection.size());
IPropertyDescriptor[] firstDescs = firstSource.getPropertyDescriptors();
for (int i = 0; i < firstDescs.length; i++) {
IPropertyDescriptor desc = firstDescs[i];
if (intersection.containsKey(desc.getId())) {
result.add(desc);
}
}
return result;
}
/**
* Returns an map of property descritptors (keyed on id) for the given property source.
*
* @source a property source for which to obtain descriptors
* @return a table of decriptors keyed on their id
*/
private Map computePropertyDescriptorsFor(IPropertySource source) {
IPropertyDescriptor[] descriptors = source.getPropertyDescriptors();
Map result = new HashMap(descriptors.length * 2 + 1);
for (int i = 0; i < descriptors.length; i++) {
result.put(descriptors[i].getId(), descriptors[i]);
}
return result;
}
@Override
protected void createColumns() {
int bounds = 100;
int column = 0;
clearColumns();
List list = propertySources;
if (list.isEmpty() && exemplar != null) {
list = new ArrayList();
list.add(exemplar);
}
boolean usePropertySourceProviderIfItHasNicerRenderers = false;
if (usePropertySourceProviderIfItHasNicerRenderers) {
SortedMap<String, TableViewerColumn> headers = new TreeMap<String, TableViewerColumn>();
for (Object object : list) {
final IPropertySource propertySource = PropertySources.asPropertySource(object);
IPropertyDescriptor[] descriptors = propertySource.getPropertyDescriptors();
if (descriptors != null) {
for (final IPropertyDescriptor descriptor : descriptors) {
final Object id = descriptor.getId();
String header = PropertyDescriptors.getReadablePropertyName(descriptor);
TableViewerColumn col = headers.get(header);
if (col == null) {
col = createTableViewerColumn(header, bounds, column++);
headers.put(header, col);
IPropertySourceProvider propertySourceProvider =
new IPropertySourceProvider() {
@Override
public IPropertySource getPropertySource(Object object) {
return PropertySources.asPropertySource(object);
}
};
col.setLabelProvider(new PropertyColumnLabelProvider(propertySourceProvider, id));
}
}
}
}
} else {
SortedMap<String, Function1> headers = new TreeMap<String, Function1>();
for (Object object : list) {
final IPropertySource propertySource = PropertySources.asPropertySource(object);
IPropertyDescriptor[] descriptors = propertySource.getPropertyDescriptors();
if (descriptors != null) {
for (final IPropertyDescriptor descriptor : descriptors) {
final Object id = descriptor.getId();
String name = PropertyDescriptors.getReadablePropertyName(descriptor);
Function1 function =
new Function1WithReturnType() {
@Override
public Object apply(Object object) {
IPropertySource property = PropertySources.asPropertySource(object);
if (property != null) {
return property.getPropertyValue(id);
}
return null;
}
@Override
public Class<?> getReturnType() {
return PropertyDescriptors.getPropertyType(descriptor);
}
};
headers.put(name, function);
}
}
}
int idx = 0;
boolean pickedSortColumn = false;
Set<Entry<String, Function1>> entrySet = headers.entrySet();
for (Entry<String, Function1> entry : entrySet) {
String header = entry.getKey();
if (!pickedSortColumn && isDefaultSortColumn(header)) {
setDefaultSortColumnIndex(idx);
pickedSortColumn = true;
}
Function1 function = entry.getValue();
addFunction(function);
TableViewerColumn col = createTableViewerColumn(header, bounds, column++);
col.setLabelProvider(createColumnLabelProvider(header, function));
idx++;
}
}
}