Get list of components

[techxsarthak]

How can I get a list of all the component names in a Screen using java such as name of the labels, text boxes etc. Please help as soon as possible.

[devxlabs]

Can you provide an example

[Kumaraswamy]

This is the code I've used in manyof my extensions.
Do not call it directly from your extension Constructor, it may fail to map all the components.

components is a mapping of Component Name to Component Instance.
You may modify the code to only have the component names list.

Map<String, Component> components;
if (form instanceof ReplForm) {
  components = mapComponentsRepl();
} else {
  components = mapComponents();
}

...

private Map<String, Component> mapComponents() throws NoSuchFieldException, IllegalAccessException {
    Map<String, Component> components = new HashMap<>();
    Field componentsField = form.getClass().getField("components$Mnto$Mncreate");
    LList listComponents = (LList) componentsField.get(form);
    for (Object component : listComponents) {
      LList lList = (LList) component;
      SimpleSymbol symbol = (SimpleSymbol) lList.get(2);
      String componentName = symbol.getName();
      Object value = form.getClass().getField(componentName).get(form);
      if (value instanceof Component) {
        components.put(componentName, (Component) value);
      }
    }
    return components;
  }

...

private Map<String, Component> mapComponentsRepl() throws NoSuchFieldException, IllegalAccessException {
    Map<String, Component> components = new HashMap<>();
    Field field = form.getClass().getField("form$Mnenvironment");
    Environment environment = (Environment) field.get(form);
    LocationEnumeration locationEnumeration = environment.enumerateAllLocations();
    while (locationEnumeration.hasMoreElements()) {
      Location location = locationEnumeration.next();
      String componentName = location.getKeySymbol().getName();
      Object value = location.getValue();
      if (value instanceof Component) {
        components.put(componentName, (Component) value);
      }
    }
    return components;
  }

[techxsarthak]

Thanks