package sk.stuba.fiit.perconik.core.resources;
import org.eclipse.jface.text.ITextListener;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.TextEvent;
import org.eclipse.ui.IWorkbenchPartReference;
import sk.stuba.fiit.perconik.core.listeners.PartListener;
import sk.stuba.fiit.perconik.core.listeners.TextListener;
import sk.stuba.fiit.perconik.eclipse.ui.Parts;
import static com.google.common.base.Preconditions.checkNotNull;
import static sk.stuba.fiit.perconik.core.resources.Ui.dereferencePart;
final class TextHook extends InternalHook<ITextViewer, TextListener> implements PartListener {
TextHook(final TextListener listener) {
super(new TextViewerHandler(listener));
}
static final class Support extends AbstractHookSupport<TextHook, ITextViewer, TextListener> {
public Hook<ITextViewer, TextListener> create(final TextListener listener) {
return new TextHook(listener);
}
}
private static final class TextListenerProxy extends AbstractListenerProxy<TextListener> implements ITextListener {
final ITextViewer viewer;
TextListenerProxy(final TextListener listener, final ITextViewer viewer) {
super(listener);
this.viewer = checkNotNull(viewer);
}
public void textChanged(final TextEvent event) {
this.listener.textChanged(this.viewer, event);
}
}
private static final class TextViewerHandler extends InternalHandler<ITextViewer, TextListener> {
TextViewerHandler(final TextListener listener) {
super(ITextViewer.class, listener);
}
public void register(final ITextViewer viewer) {
viewer.addTextListener(new TextListenerProxy(this.listener, viewer));
}
public void unregister(final ITextViewer viewer) {
viewer.removeTextListener(new TextListenerProxy(this.listener, viewer));
}
}
@Override
void preRegisterInternal() {
Hooks.addTextViewersAsynchronouslyTo(this);
}
public void partOpened(final IWorkbenchPartReference reference) {
Hooks.addNonNull(this, Parts.getTextViewer(dereferencePart(reference)));
}
public final void partClosed(final IWorkbenchPartReference reference) {
Hooks.removeNonNull(this, Parts.getTextViewer(dereferencePart(reference)));
}
public void partActivated(final IWorkbenchPartReference reference) {}
public void partDeactivated(final IWorkbenchPartReference reference) {}
public void partVisible(final IWorkbenchPartReference reference) {}
public void partHidden(final IWorkbenchPartReference reference) {}
public void partBroughtToTop(final IWorkbenchPartReference reference) {}
public void partInputChanged(final IWorkbenchPartReference reference) {}
}