/** Creates a new category, sending it to the server and adding it to the model. */
public void createCategory(String name, int parentId, AsyncCallback<Category> callback) {
final Category cat = new Category();
cat.name = name;
cat.parentId = parentId;
cat.creator = _ctx.getMe();
Function<Integer, Category> toCat =
new Function<Integer, Category>() {
public Category apply(Integer catId) {
cat.categoryId = catId;
return cat;
}
};
Function<Category, Void> addCatOp =
new Function<Category, Void>() {
public Void apply(Category cat) {
List<Category> cats = _catmap.get(cat.parentId);
if (cats == null) {
_catmap.put(cat.parentId, cats = new ArrayList<Category>());
}
cats.add(cat);
return null;
}
};
_editorsvc.createCategory(cat, Callbacks.map(Callbacks.before(callback, addCatOp), toCat));
}
/** Reparents the supplied category with the specified new parent. */
public void moveCategory(
final Category cat, final int newParentId, AsyncCallback<Void> callback) {
final int oldParentId = cat.parentId;
Function<Void, Void> movedOp =
new Function<Void, Void>() {
public Void apply(Void result) {
List<Category> cats = _catmap.get(oldParentId);
if (cats != null) {
cats.remove(cat);
}
cats = _catmap.get(newParentId);
if (cats != null) {
cats.add(cat);
Collections.sort(cats);
}
return null;
}
};
cat.parentId = newParentId;
_editorsvc.updateCategory(cat, Callbacks.before(callback, movedOp));
}