private StoreFilterField<SelectionItem> buildFilter(TreeStore<SelectionItem> store) {
StoreFilterField<SelectionItem> treeFilter =
new StoreFilterField<SelectionItem>() {
@Override
protected boolean doSelect(
Store<SelectionItem> store, SelectionItem parent, SelectionItem item, String filter) {
String itemDisplay = item.getDisplay().toLowerCase();
String searchTerm = filter.toLowerCase();
return (itemDisplay.indexOf(searchTerm) >= 0);
}
@Override
protected void onFilter() {
super.onFilter();
tree.unmask();
}
@Override
protected void onKeyUp(Event event) {
tree.mask();
super.onKeyUp(event);
}
};
treeFilter.bind(store);
treeFilter.setEmptyText(I18N.DISPLAY.treeSelectorFilterEmptyText());
treeFilter.setWidth(250);
treeFilter.setValidationDelay(750);
return treeFilter;
}
public Widget asWidget() {
FlowLayoutContainer con = new FlowLayoutContainer();
con.addStyleName("margin-10");
TreeStore<BaseDto> store = new TreeStore<BaseDto>(new KeyProvider());
FolderDto root = TestData.getMusicRootFolder();
for (BaseDto base : root.getChildren()) {
store.add(base);
if (base instanceof FolderDto) {
processFolder(store, (FolderDto) base);
}
}
StoreFilterField<BaseDto> filter =
new StoreFilterField<BaseDto>() {
@Override
protected boolean doSelect(
Store<BaseDto> store, BaseDto parent, BaseDto item, String filter) {
if (item instanceof FolderDto) {
return false;
}
String name = item.getName();
name = name.toLowerCase();
if (name.startsWith(filter.toLowerCase())) {
return true;
}
return false;
}
};
filter.bind(store);
final Tree<BaseDto, String> tree =
new Tree<BaseDto, String>(
store,
new ValueProvider<BaseDto, String>() {
@Override
public String getValue(BaseDto object) {
return object.getName();
}
@Override
public void setValue(BaseDto object, String value) {}
@Override
public String getPath() {
return "name";
}
});
tree.setWidth(300);
tree.getStyle().setLeafIcon(ExampleImages.INSTANCE.music());
ButtonBar buttonBar = new ButtonBar();
buttonBar.add(
new TextButton(
"Expand All",
new SelectHandler() {
@Override
public void onSelect(SelectEvent event) {
tree.expandAll();
}
}));
buttonBar.add(
new TextButton(
"Collapse All",
new SelectHandler() {
@Override
public void onSelect(SelectEvent event) {
tree.collapseAll();
}
}));
buttonBar.setLayoutData(new MarginData(4));
con.add(filter);
con.add(buttonBar);
con.add(tree);
return con;
}
