/**
* Internal hook method called when the input to this viewer is initially set or subsequently
* changed.
*
* <p>The <code>ContentMergeViewer</code> implementation of this <code>Viewer</code> method tries
* to save the old input by calling <code>doSave(...)</code> and then calls <code>
* internalRefresh(...)</code> .
*
* @param input the new input of this viewer, or <code>null</code> if there is no new input
* @param oldInput the old input element, or <code>null</code> if there was previously no input
*/
protected final void inputChanged(Object input, Object oldInput) {
if (input != oldInput && oldInput != null) {
ICompareInputLabelProvider lp = getCompareConfiguration().getLabelProvider();
if (lp != null) lp.removeListener(labelChangeListener);
}
if (input != oldInput && oldInput instanceof ICompareInput) {
ICompareContainer container = getCompareConfiguration().getContainer();
container.removeCompareInputChangeListener(
(ICompareInput) oldInput, fCompareInputChangeListener);
}
boolean success = doSave(input, oldInput);
if (input != oldInput && input instanceof ICompareInput) {
ICompareContainer container = getCompareConfiguration().getContainer();
container.addCompareInputChangeListener((ICompareInput) input, fCompareInputChangeListener);
}
if (input != oldInput && input != null) {
ICompareInputLabelProvider lp = getCompareConfiguration().getLabelProvider();
if (lp != null) lp.addListener(labelChangeListener);
}
if (success) {
setLeftDirty(false);
setRightDirty(false);
}
if (input != oldInput) internalRefresh(input);
}
