public void preserveValues(final Widget widget) {
JITVisualizationWidget vWidget = (JITVisualizationWidget) widget;
ControlLCAUtil.preserveValues(vWidget);
IWidgetAdapter adapter = WidgetUtil.getAdapter(vWidget);
adapter.preserve(PROP_VISIBLE, String.valueOf(vWidget.isVisible()));
adapter.preserve(WIDGET_DATA, new JSVar(vWidget.getJSONData()));
// only needed for custom variants (theming)
WidgetLCAUtil.preserveCustomVariant(vWidget);
}
/**
* Respond to selection events, set the value of selectedItem on the widget Java object, and
* broadcast a SWT.Selection event to any listeners
*/
public void readData(final Widget widget) {
if (widget == null) return;
JITVisualizationWidget visWidget = (JITVisualizationWidget) widget;
String selectedNode = WidgetLCAUtil.readPropertyValue(visWidget, "selectedNode");
if (selectedNode != null) {
visWidget.setData("selectedNode", selectedNode);
ControlLCAUtil.processSelection(visWidget, null, true);
}
}
public void renderChanges(final Widget widget) throws IOException {
JITVisualizationWidget vWidget = (JITVisualizationWidget) widget;
JSWriter writer = JSWriter.getWriterFor(vWidget);
writer.set(PROP_VISIBLE, PROP_VISIBLE, String.valueOf(vWidget.isVisible()));
// We compare the JSON text directly because JSVar does not override Object.equals();
IWidgetAdapter adapter = WidgetUtil.getAdapter(vWidget);
JSVar oldValue = (JSVar) adapter.getPreserved(WIDGET_DATA);
String jsonData = vWidget.getJSONData();
if (jsonData != null && (oldValue == null || !jsonData.equals(oldValue.toString()))) {
writer.set(WIDGET_DATA, WIDGET_DATA, new JSVar(jsonData));
}
ControlLCAUtil.writeChanges(vWidget);
WidgetCommandQueue cmdQueue = (WidgetCommandQueue) vWidget.getAdapter(WidgetCommandQueue.class);
if (cmdQueue != null) {
while (cmdQueue.peek() != null) {
Object[] functionCall = (Object[]) cmdQueue.poll();
writer.call((String) functionCall[0], (Object[]) functionCall[1]);
}
}
}
