private boolean applyFilters(CategorySerializable cat) {
// Apply any filters.
boolean include = true;
if (filters.size() > 0) {
for (Iterator filterIt = filters.iterator(); filterIt.hasNext(); ) {
DatasetFilter filter = (DatasetFilter) filterIt.next();
// This should be done with introspection, but for now do a
// big cheat
String name = "x";
String value = "y";
if (filter.getAttribute().equals("name")) {
name = cat.getName().toLowerCase();
value = filter.getValue().toLowerCase();
} else if (filter.getAttribute().equals("ID")) {
name = cat.getID();
value = filter.getValue();
}
if (name.contains(value)) {
include = include && filter.isInclude();
} else {
include = include && !filter.isInclude();
}
}
}
return include;
}
@Override
public void onOpen(OpenEvent<TreeItem> event) {
TreeItem item = event.getTarget();
currentlySelected = item;
if (item.getChild(0).getText().equals(DatasetWidget.LOADING)) {
CategorySerializable cat = (CategorySerializable) item.getUserObject();
Util.getRPCService().getCategories(cat.getID(), null, categoryCallback);
}
}
@Override
public void onSelection(SelectionEvent<TreeItem> event) {
TreeItem item = event.getSelectedItem();
currentlySelected = item;
TreeItem child = item.getChild(0);
if (child != null && child.getText().equals(DatasetWidget.LOADING)) {
CategorySerializable cat = (CategorySerializable) item.getUserObject();
Util.getRPCService().getCategories(cat.getID(), null, categoryCallback);
}
// Open the item. Work around double firing bug.
// http://code.google.com/p/google-web-toolkit/issues/detail?id=3660&q=Tree%20selection&colspec=ID%20Type%20Status%20Owner%20Milestone%20Summary%20Stars
TreeItem selItem = event.getSelectedItem();
TreeItem parent = selItem.getParentItem();
selItem.getTree().setSelectedItem(parent, false); // null is ok
if (parent != null) parent.setSelected(false); // not compulsory
selItem.setState(!selItem.getState(), false);
}
public InnerItem(Serializable s) {
close.addStyleDependentName("SMALLER");
close.addClickHandler(
new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
inner.hide();
}
});
innerLayout.add(close);
grid.getCellFormatter().setWidth(0, 0, "85%");
grid.getCellFormatter().setWidth(0, 1, "5%");
label.setText(s.getName());
grid.setWidget(0, 0, label);
if (s instanceof CategorySerializable) {
CategorySerializable c = (CategorySerializable) s;
if (c.getDoc() != null || c.getAttributes().get("children_dsid") != null) {
image.addClickHandler(
new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
inner.setPopupPosition(image.getAbsoluteLeft(), image.getAbsoluteTop());
inner.show();
}
});
grid.setWidget(0, 1, image);
if (c.getDoc() != null) {
String url = c.getDoc();
if (!c.getDoc().equals("")) {
Anchor link = new Anchor("Documentation", url, "_blank");
innerLayout.add(link);
}
}
if (c.getAttributes().get("children_dsid") != null) {
Anchor meta =
new Anchor(
"Variable and Grid Description",
"getMetadata.do?dsid=" + c.getAttributes().get("children_dsid"),
"_blank");
innerLayout.add(meta);
}
inner.add(innerLayout);
}
}
initWidget(grid);
}
public void onSuccess(Object result) {
CategorySerializable[] cats = (CategorySerializable[]) result;
if (cats != null && cats.length > 0) {
if (currentlySelected == null) {
for (int i = 0; i < cats.length; i++) {
CategorySerializable cat = cats[i];
String children = cat.getAttributes().get("children");
boolean empty = false;
if (children != null && children.equals("none")) empty = true;
if (applyFilters(cat) && !empty) {
TreeItem item = new TreeItem();
item.addItem(
new SafeHtmlBuilder().appendEscaped(DatasetWidget.LOADING).toSafeHtml());
InnerItem inner = new InnerItem(cat);
item.setWidget(inner);
item.setUserObject(cat);
addItem(item);
}
}
} else {
for (int i = 0; i < cats.length; i++) {
CategorySerializable cat = cats[i];
if (cat.isCategoryChildren()) {
String name = cat.getName();
TreeItem item;
if (i == 0) {
item = currentlySelected.getChild(0);
} else {
item = new TreeItem();
}
item.addItem(
new SafeHtmlBuilder().appendEscaped(DatasetWidget.LOADING).toSafeHtml());
InnerItem inner = new InnerItem(cat);
item.setWidget(inner);
item.setUserObject(cat);
if (i > 0) {
currentlySelected.addItem(item);
}
} else if (cat.isVariableChildren()) {
// Must have variable children...
TreeItem item = currentlySelected.getChild(0);
if (cat.hasMultipleDatasets()) {
DatasetSerializable[] dses = cat.getDatasetSerializableArray();
DatasetSerializable ds = dses[0];
VariableSerializable[] vars = ds.getVariablesSerializable();
currentlySelected.removeItems();
for (int j = 0; j < dses.length; j++) {
ds = dses[j];
vars = ds.getVariablesSerializable();
loadItem(vars);
}
} else {
DatasetSerializable ds = cat.getDatasetSerializable();
VariableSerializable[] vars = ds.getVariablesSerializable();
currentlySelected.removeItems();
loadItem(vars);
}
}
}
}
} else {
// A category was selected, but it came back empty...
if (currentlySelected != null) {
TreeItem item = currentlySelected.getChild(0);
item.setText("No data sets found.");
}
}
if (saveSelection != null) {
currentlySelected = saveSelection;
saveSelection = null;
}
}