/**
* Whether the element has children.
*
* @param element to identify, either a SystemInfo or FileInfo
* @return true if element has non-empty children list, otherwise false
*/
public boolean hasChildren(Object element) {
if (element instanceof ExampleContributions) {
ExampleContributions si = (ExampleContributions) element;
if (si.getCategories().isEmpty() == false) return true;
}
if (element instanceof ExampleCategory) {
ExampleCategory si = (ExampleCategory) element;
if (si.getExamples().isEmpty() == false) return true;
}
return false;
}
/**
* Get the category or example name as the label text.
*
* @param obj object to label
* @return category or example name
*/
public String getText(Object obj) {
if (obj instanceof ExampleCategory) {
ExampleCategory c = (ExampleCategory) obj;
return c.getName();
}
if (obj instanceof Example) {
Example e = (Example) obj;
return MessageFormat.format("{0} {1}", e.getName(), e.getVersion());
}
return obj.toString();
}
/** Gets the array of elements based on input. */
public Object[] getElements(Object inputElement) {
// individual example contributions
if (inputElement instanceof ExampleContributions) {
ExampleContributions input = (ExampleContributions) inputElement;
return input.getCategoriesArray();
}
// example contribution categories
if (inputElement instanceof ExampleCategory) {
ExampleCategory input = (ExampleCategory) inputElement;
return input.getExamplesArray();
}
return new Object[0];
}