Java Locator类代码示例

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Refresh this node SplineConnection's children (its decorations). Calling the locator's relocate() moves these decorations.
 * 
 * @param conn
 *            the node connection
 * @param force
 *            force a refresh that might cause infinite loops
 * @return true if we could refresh (edit part and figure exist)
 */
public boolean refreshNodeConnection(NodeConnection conn, boolean force) {

    NodeConnectionEditPart nc = (NodeConnectionEditPart) getViewer().getEditPartRegistry().get(conn);
    if (nc != null) {
        // seems to cause infinite loops with connection router.
        if (force)
            nc.refreshVisuals();

        for (Iterator iter = nc.getFigure().getChildren().iterator(); iter.hasNext();) {
            IFigure fig = (IFigure) iter.next();
            if (fig instanceof TimeoutPathFigure || fig instanceof Label) {
                Locator loc = (Locator) ((SplineConnection) nc.getFigure()).getLayoutManager().getConstraint(fig);
                // don't know why isn't refreshing stub/timer labels
                // probably has to do with implementation of locator
                // Seems to be useful when moving the node connection
                // indirectly.
                loc.relocate(fig);
            }
        }
        return true;
    }
    return false;

}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Shows a focus rectangle around the host's figure. The focus rectangle is
 * expanded by 5 pixels from the figure's bounds.
 * 
 * @see org.eclipse.gef.editpolicies.SelectionEditPolicy#showFocus()
 */
protected void showFocus() {
	focusRect = new AbstractHandle((GraphicalEditPart) getHost(),
			new Locator() {
				public void relocate(IFigure target) {
					IFigure figure = getHostFigure();
					Rectangle r;
					if (figure instanceof HandleBounds)
						r = ((HandleBounds) figure).getHandleBounds()
								.getCopy();
					else
						r = getHostFigure().getBounds().getResized(-1, -1);
					getHostFigure().translateToAbsolute(r);
					target.translateToRelative(r);
					target.setBounds(r.expand(5, 5).resize(1, 1));
				}
			}) {
		{
			setBorder(new FocusBorder());
		}

		protected DragTracker createDragTracker() {
			return null;
		}
	};
	addFeedback(focusRect);
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * This method returns a {@link ConnectionEndpointLocator} for this {@link Relation} from type
 * relationship.
 * 
 * @return locator org.eclipse.draw2d.ConnectionEndpointLocator
 * */
private Locator getConnectionLocator(final PolylineConnection connection, final boolean isEnd) {
  final ConnectionEndpointLocator locator = new ConnectionEndpointLocator(connection, isEnd);
  locator.setVDistance(-1);
  locator.setUDistance(1);
  return locator;
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
public AbstractGuideHandle( GraphicalEditPart owner, Locator loc )
{
	super( owner, loc );
	addMouseMotionListener( this );
	getLocator( ).relocate( this );

}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Creates a MoveHandle for the given <code>GraphicalEditPart</code> using
 * the given <code>Locator</code>.
 * 
 * @param owner
 *            The GraphicalEditPart to be moved by this handle.
 * @param loc
 *            The Locator used to place the handle.
 */
public ColumnDragHandle( TableEditPart owner, Locator loc, int start,
		int end )
{
	super( owner, loc );
	this.start = start;
	this.end = end;

	initialize( );
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
public BandMoveHandle(GraphicalEditPart owner, Locator loc) {
	super(owner, loc);
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
public ControlFigure(GraphicalEditPart owner, Locator loc)
{
	super( owner, loc );
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
public void reveal( EditPart part )
{
	// In some case, the editor control is not created, but get the sync selection event.
	// Fix this problem temporary.
	if(getFigureCanvas( )==null || getFigureCanvas( ).isDisposed( ))
	{
		return;
	}
	
	Viewport port = getFigureCanvas( ).getViewport( );
	IFigure target = ( (GraphicalEditPart) part ).getFigure( );

	Rectangle exposeRegion = target.getBounds( ).getCopy( );

	// Get the primary editpolicy
	EditPolicy policy = part.getEditPolicy( EditPolicy.PRIMARY_DRAG_ROLE );

	// If the policy let us access the handles, proceed, otherwise
	// default to original behaviour
	if ( !( policy instanceof ISelectionHandlesEditPolicy ) )
	{
		super.reveal( part );
		return;
	}

	// First translate exposeRegion to the root level
	target = target.getParent( );
	while ( target != null && target != port )
	{
		target.translateToParent( exposeRegion );
		target = target.getParent( );
	}

	// Merge selection handles if any to the exposeRegion
	List handles = ( (ISelectionHandlesEditPolicy) policy ).getHandles( );
	for ( Iterator iter = handles.iterator( ); iter.hasNext( ); )
	{
		AbstractHandle handle = (AbstractHandle) iter.next( );

		Locator locator = handle.getLocator( );
		locator.relocate( handle );
		exposeRegion.union( handle.getBounds( ).getCopy( ) );
	}

	exposeRegion.getExpanded( 5, 5 );

	Dimension viewportSize = port.getClientArea( ).getSize( );

	Point topLeft = exposeRegion.getTopLeft( );
	Point bottomRight = exposeRegion.getBottomRight( )
			.translate( viewportSize.getNegated( ) );
	Point finalLocation = new Point( );
	if ( viewportSize.width < exposeRegion.width )
		finalLocation.x = Math.min( bottomRight.x, Math.max( topLeft.x,
				port.getViewLocation( ).x ) );
	else
		finalLocation.x = Math.min( topLeft.x, Math.max( bottomRight.x,
				port.getViewLocation( ).x ) );

	if ( viewportSize.height < exposeRegion.height )
		finalLocation.y = Math.min( bottomRight.y, Math.max( topLeft.y,
				port.getViewLocation( ).y ) );
	else
		finalLocation.y = Math.min( topLeft.y, Math.max( bottomRight.y,
				port.getViewLocation( ).y ) );

	getFigureCanvas( ).scrollSmoothTo( finalLocation.x, finalLocation.y );
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * @param owner
 */
public ListControlMenuFigure( GraphicalEditPart owner, Locator loc )
{
	super( owner, loc );
	setBounds( new Rectangle( 55, 0, 18, 19 ) );
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Creates a new BendpointMoveHandle and sets its owner to
 * <code>owner</code>, sets its index to <code>index</code>, and sets its
 * locator to <code>locator</code>.
 * 
 * @param owner
 *            the ConnectionEditPart owner
 * @param index
 *            the index
 * @param locator
 *            the Locator
 */
public BendpointMoveHandle(ConnectionEditPart owner, int index,
		Locator locator) {
	setOwner(owner);
	setIndex(index);
	setLocator(locator);
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Creates a new BendpointCreationHandle and sets its owner to
 * <code>owner</code>, sets its index to <code>index</code>, and sets its
 * locator to <code>locator</code>.
 * 
 * @param owner
 *            the ConnectionEditPart owner
 * @param index
 *            the index
 * @param locator
 *            the Locator
 */
public BendpointCreationHandle(ConnectionEditPart owner, int index,
		Locator locator) {
	setOwner(owner);
	setIndex(index);
	setLocator(locator);
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Creates a MoveHandle for the given <code>GraphicalEditPart</code> using
 * the given <code>Locator</code>.
 * 
 * @param owner
 *            The GraphicalEditPart to be moved by this handle.
 * @param loc
 *            The Locator used to place the handle.
 */
public RowHandle( TableEditPart owner, Locator loc, int number )
{
	super( owner, loc );
	this.rowNumber = number;

	initialize( );
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Creates a MoveHandle for the given <code>GraphicalEditPart</code> using
 * the given <code>Locator</code>.
 * 
 * @param owner
 *            The GraphicalEditPart to be moved by this handle.
 * @param loc
 *            The Locator used to place the handle.
 */
public RowDragHandle( TableEditPart owner, Locator loc, int start, int end )
{
	super( owner, loc );
	this.start = start;
	this.end = end;

	initialize( );
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Creates a MoveHandle for the given <code>GraphicalEditPart</code> using
 * the given <code>Locator</code>.
 * 
 * @param owner
 *            The GraphicalEditPart to be moved by this handle.
 * @param loc
 *            The Locator used to place the handle.
 */
public ColumnHandle( TableEditPart owner, Locator loc, int number )
{
	super( owner, loc );
	this.columnNumber = number;

	initialize( );
}
 

import org.eclipse.draw2d.Locator; //导入依赖的package包/类
/**
 * Creates a new BendpointCreationHandle and sets its owner to 
 * <code>owner</code>, sets its index to <code>index</code>, and
 * sets its locator to <code>locator</code>.
 * @param owner the ConnectionEditPart owner
 * @param index the index
 * @param locator the Locator
 */
public SequenceBendpointCreationHandle(ConnectionEditPart owner, int index, Locator locator) {
    setOwner(owner);
    setIndex(index);
    setLocator(locator);
}