package com.aptana.editor.php.internal.ui.actions;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
/**
* A simple default implementation of a {@link ISelectionProvider}. It stores
* the selection and notifies all selection change listeners when the selection
* is set.
*
* Instances of this class can be used as special selection provider
* for {@link SelectionDispatchAction}s
*
* @since 3.4
*/
public class SimpleSelectionProvider implements ISelectionProvider {
private final ListenerList fSelectionChangedListeners;
private ISelection fSelection;
/**
* Create a new SimpleSelectionProvider
*/
public SimpleSelectionProvider() {
fSelectionChangedListeners= new ListenerList();
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ISelectionProvider#getSelection()
*/
public ISelection getSelection() {
return fSelection;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection)
*/
public void setSelection(ISelection selection) {
fSelection= selection;
Object[] listeners= fSelectionChangedListeners.getListeners();
for (int i= 0; i < listeners.length; i++) {
((ISelectionChangedListener) listeners[i]).selectionChanged(new SelectionChangedEvent(this, selection));
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ISelectionProvider#removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener)
*/
public void removeSelectionChangedListener(ISelectionChangedListener listener) {
fSelectionChangedListeners.remove(listener);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ISelectionProvider#addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener)
*/
public void addSelectionChangedListener(ISelectionChangedListener listener) {
fSelectionChangedListeners.add(listener);
}
}