@Override
@SuppressWarnings("unchecked")
public void selectionChanged(final SelectionChangedEvent event) {
TreeSelection selection = (TreeSelection) event.getSelection();
Object o = selection.getFirstElement();
if (o == null || o instanceof NoDatabaseRoot) {
doc.setText("");
return;
}
// Try to find element to show
HoogleResult result = null;
if (o instanceof HoogleResult) {
result = (HoogleResult) o;
} else {
Map.Entry<String, Object> entry = (Map.Entry<String, Object>) o;
if (entry.getValue() instanceof HoogleResult) {
result = (HoogleResult) entry.getValue();
}
}
if (result != null) {
String text = "";
switch (result.getType()) {
case KEYWORD:
text = HtmlUtil.generateDocument("keyword " + result.getName(), "");
break;
case PACKAGE:
HaskellPackage pkg = ((HoogleResultPackage) result).getPackage();
text =
HtmlUtil.generateDocument("package " + pkg.getIdentifier().toString(), pkg.getDoc());
break;
case MODULE:
HoogleResultModule mod = (HoogleResultModule) result;
text =
HtmlUtil.generateDocument(
"module " + mod.getName(),
mod.getPackageIdentifiers(),
null,
false,
mod.getModule().getDoc());
break;
case DECLARATION:
HoogleResultDeclaration decl = (HoogleResultDeclaration) result;
text =
HtmlUtil.generateDocument(
decl.getDeclaration().getCompleteDefinition(),
decl.getPackageIdentifiers(),
decl.getModule(),
false,
decl.getDeclaration().getDoc());
break;
case CONSTRUCTOR:
HoogleResultConstructor con = (HoogleResultConstructor) result;
text =
HtmlUtil.generateDocument(
con.getConstructor().getCompleteDefinition(),
con.getPackageIdentifiers(),
con.getModule(),
false,
con.getDeclaration().getDoc());
break;
case WARNING: // not in tree
break;
}
doc.setText(text);
} else {
doc.setText(HtmlUtil.generateText(UITexts.browser_definedInSeveralLocations));
}
}