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/*******************************************************************************
* Copyright (c) 2001, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.wsdl.ui.internal.asd.design.editparts;
import java.util.Iterator;
import java.util.List;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.PositionConstants;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPartViewer;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.LayerConstants;
import org.eclipse.gef.editparts.AbstractGraphicalEditPart;
import org.eclipse.gef.editparts.LayerManager;
import org.eclipse.wst.wsdl.ui.internal.asd.design.figures.ComponentReferenceConnection;
class EditPartNavigationHandlerUtil
{
static GraphicalEditPart getRelativeEditPart(GraphicalEditPart focusEditPart, int direction)
{
// these 'delta' values need to be set to some value that's large enough to cross the gap
// between adjacent edit parts (since some layouts may space the edit parts out a bit)
int dx = 5;
int dy = 5;
IFigure contentPane = focusEditPart.getContentPane();
// we attempt to compute a rectangle that represents our current location
Rectangle r = focusEditPart.getFigure().getBounds().getCopy();
focusEditPart.getFigure().translateToAbsolute(r);
if (contentPane != focusEditPart.getFigure())
{
// if the EditPart has a contentPane (that's no the figure) then we assume
// effective rectangle is only the header portion of the figure
//
Rectangle contentPaneBounds = contentPane.getBounds().getCopy();
contentPane.translateToAbsolute(contentPaneBounds);
// we assume that when the editpart's figure and contentPane are different
// that portion of the 'hittable' portion of editpart should not include the contentPane
if (contentPaneBounds.y > r.y)
{
// if the contentPane is lower than the figure we only want the rectangle
// above the contentPane
r.height = contentPaneBounds.y - r.y;
// we adjust the rectangle the right slightly since the content is nested a bit
r.x = contentPaneBounds.x;
}
if (contentPaneBounds.x > r.x)
{
// if the contentPane is to the right of the figure we only want the rectangle
// to the left of the content pane
r.width = contentPaneBounds.x - r.x;
}
}
Point p = null;
if (direction == PositionConstants.NORTH)
{
p = r.getTopLeft();
p.y -= dy;
}
else if (direction == PositionConstants.SOUTH)
{
p = r.getBottomLeft();
p.x += dx;
p.y += dy;
}
else if (direction == PositionConstants.EAST)
{
p = r.getTopRight();
p.x += dx;
}
else if (direction == PositionConstants.WEST)
{
p = r.getLeft();
p.x -= dx;
}
EditPart t = focusEditPart.getViewer().findObjectAt(p);
if (t instanceof ColumnEditPart || t instanceof DefinitionsEditPart)
{
t = null;
}
return (GraphicalEditPart)t;
}
static EditPart getNextSibling(EditPart editPart)
{
EditPart result = null;
EditPart parent = editPart.getParent();
if (parent != null)
{
List children = parent.getChildren();
int index = children.indexOf(editPart);
if (index + 1 < children.size())
{
result = (EditPart)children.get(index + 1);
}
}
return result;
}
static EditPart getPrevSibling(EditPart editPart)
{
EditPart result = null;
EditPart parent = editPart.getParent();
if (parent != null)
{
List children = parent.getChildren();
int index = children.indexOf(editPart);
if (index - 1 >= 0)
{
// if this is the first child
//
result = (EditPart)children.get(index - 1);
}
}
return result;
}
static EditPart getNextInterface(EditPart editPart)
{
EditPart result = null;
for (EditPart e = editPart; e != null; e = e.getParent())
{
if (e instanceof InterfaceEditPart)
{
InterfaceEditPart ie = (InterfaceEditPart)e;
result = EditPartNavigationHandlerUtil.getNextSibling(ie);
break;
}
}
return result;
}
static EditPart getSourceConnectionEditPart(AbstractGraphicalEditPart editPart)
{
// find the first connection that targets this editPart
// navigate backward along the connection (to the left) to find the sourc edit part
EditPart result = null;
EditPartViewer viewer = editPart.getViewer();
LayerManager manager = (LayerManager)editPart.getViewer().getEditPartRegistry().get(LayerManager.ID);
IFigure layer = manager.getLayer(LayerConstants.CONNECTION_LAYER);
for (Iterator i = layer.getChildren().iterator(); i.hasNext(); )
{
Figure figure = (Figure)i.next();
if (figure instanceof ComponentReferenceConnection)
{
ComponentReferenceConnection componentReferenceConnection = (ComponentReferenceConnection)figure;
ConnectionAnchor targetAnchor = componentReferenceConnection.getTargetAnchor();
if (targetAnchor.getOwner() == editPart.getFigure())
{
ConnectionAnchor sourceAnchor = componentReferenceConnection.getSourceAnchor();
IFigure sourceFigure = sourceAnchor.getOwner();
EditPart part = null;
while (part == null && sourceFigure != null)
{
part = (EditPart)viewer.getVisualPartMap().get(sourceFigure);
sourceFigure = sourceFigure.getParent();
}
result = part;
break;
}
}
}
return result;
}
}
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