What to do to add some UI elements in a group element on click of a button?

Question

I want to add Input fields and labels in the a group in a view on click of a button.
How to :
1)Access the right gropu in view through code?
2)Create elements in the group through code?
Please reply soon!
Sumit

Answer 1

You need a flag to signal that the elements should be added with the next call to wdDoModifyView().
Add a boolean context attribute "AddFields" to the view context and set it to true in the action handler for the button:
void onActionAddFields(...)
  wdContext.currentContextElement().setAddFields(true);
In method wdDoModifyView(), check the flag and reset it after the code that adds the fields:
(I assume the group has a MatrixLayout)
static void wdDoModifyView(...)
  if (wdContext.currentContextElement().getAddFields())
    /* access group by ID given at designtime */
    IWDGroup group = (IWDGroup) view.getElement("groupID");
    IWDLabel label = (IWDLabel) view.createElement(IWDLabel.class, null);
    /* if new row in MatrixLayout should be started: */
    IWDMatrixHeadData labelLayoutData = label.createLayoutData(IWDMatrixHeadData.class);
    /* change settings for layout data if needed */
    label.setText("whatever");
    IWDInputField field = (IWDInputField) view.createElement(IWDInputField.class, null);
    /* if in same row as label: */
    IWDMatrixData fieldLayoutData = field.createLayoutData(IWDMatrixData.class);
    /* change field layout data if needed */
    field.bindValue("context.attribute.path");
    label.setLabelFor(field);
    group.addChild(label);
    group.addChild(field);
    wdContext.currentContextElement().setAddFields(false);
Armin