package net.sourceforge.phpdt.internal.debug.ui.actions;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;

import net.sourceforge.phpdt.internal.debug.ui.properties.*;
import net.sourceforge.phpdt.internal.debug.core.breakpoints.*;

/**
 * Enables the context menu entry if object is of type PHPLineBreakpoint.
 * This is used for Breakpoint properties menu.
 * Properties menu let you set 'skip count' and condition of a PHP breakpoint. 
 * 
 */

public class PHPDebugBreakpointAction implements IViewActionDelegate {
	protected PHPLineBreakpoint fBreakpoint = null;
	
	public void init(IViewPart view) {

	}

	public void run(IAction action) {
		PHPBreakpointPropertiesDialog dialog = new PHPBreakpointPropertiesDialog (null, fBreakpoint);
		dialog.open();	
	}

	public void selectionChanged(IAction action, ISelection selection) {
		IStructuredSelection bpSelection;
		Object               bpObject;
		
		if (selection instanceof IStructuredSelection) {
			bpSelection = (IStructuredSelection) selection;
			
			if (bpSelection.size () == 1) {						// Do we have something selected
				bpObject = bpSelection.getFirstElement();		// Get the selected object
				
				if (bpObject instanceof PHPLineBreakpoint) {	// Is the object of type PHPLineBreakpoint?
					fBreakpoint = (PHPLineBreakpoint) bpObject;
					action.setEnabled (true);					// Then enable the context menu item
					return;
				}
			}
		}	
		
		action.setEnabled (false);								// It isn't a PHPLineBreakpoint, so disable the menu item 
	}
}