@Override
public void reorderChilds(Iterable<CreatedOutput> outDesc) {
final Multiset<TreeItemMapping> subMappings = LinkedHashMultiset.create();
final Map<EObject, CreatedOutput> outputToItem = Maps.newHashMap();
for (CreatedOutput createdOutput : outDesc) {
EObject createdElement = createdOutput.getCreatedElement();
outputToItem.put(createdElement, createdOutput);
if (createdElement instanceof DTreeItem) {
DTreeItem createdDTreeItem = (DTreeItem) createdElement;
TreeItemMapping actualMapping = createdDTreeItem.getActualMapping();
subMappings.add(actualMapping);
}
}
// Counts subMappings to correctly sort tree items regarding mapping
// order (items have been created regarding the semantic candidates
// order)
int startIndex = 0;
final Map<TreeItemMapping, Integer> startIndexes = Maps.newHashMap();
for (TreeItemMapping itemMapping : subMappings) {
startIndexes.put(itemMapping, startIndex);
startIndex += subMappings.count(itemMapping);
}
// Pre-compute the new indices
final Map<DTreeItem, Integer> newIndices = Maps.newHashMap();
for (DTreeItem treeItem : container.getOwnedTreeItems()) {
// init with element count : elements with unknown mapping
// will be placed at the end.
int index = outputToItem.size();
TreeItemMapping itemMapping = treeItem.getActualMapping();
if (itemMapping != null && startIndexes.containsKey(itemMapping)) {
index = startIndexes.get(itemMapping);
}
CreatedOutput createdOutput = outputToItem.get(treeItem);
if (createdOutput != null) {
index = index + createdOutput.getNewIndex();
} else {
index = -1;
}
newIndices.put(treeItem, index);
}
ECollections.sort(
container.getOwnedTreeItems(),
new Comparator<DTreeItem>() {
@Override
public int compare(DTreeItem o1, DTreeItem o2) {
return newIndices.get(o1).compareTo(newIndices.get(o2));
}
});
}
@Override
public CreatedOutput createChild(OutputDescriptor outDesc) {
OutputTreeItemDescriptor descriptor = (OutputTreeItemDescriptor) outDesc;
DTreeItem dTreeItem = TreeFactory.eINSTANCE.createDTreeItem();
dTreeItem.setActualMapping(descriptor.getMapping().getDescription());
dTreeItem.setTarget(outDesc.getSourceElement());
dTreeItem.getSemanticElements().add(outDesc.getSourceElement());
TreeItemStyle treeItemStyle = TreeFactory.eINSTANCE.createTreeItemStyle();
RGBValues backgroundColor = RGBValues.DEFAULT_GRAY;
RGBValues labelColor = RGBValues.DEFAULT_GRAY;
treeItemStyle.setBackgroundColor(backgroundColor);
treeItemStyle.setLabelColor(labelColor);
dTreeItem.setOwnedStyle(treeItemStyle);
container.getOwnedTreeItems().add(dTreeItem);
CreatedTreeItem newOne = new CreatedTreeItem(ctx, dTreeItem, descriptor);
return newOne;
}