/*******************************************************************************
* Copyright (c) 2001, 2010 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.xsd.ui.internal.adt.design.editparts;
import java.util.List;
import org.eclipse.core.runtime.Assert;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.AccessibleEditPart;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPartFactory;
import org.eclipse.gef.GraphicalViewer;
import org.eclipse.gef.editparts.AbstractGraphicalEditPart;
import org.eclipse.gef.editparts.ScalableRootEditPart;
import org.eclipse.gef.editparts.ZoomListener;
import org.eclipse.gef.editparts.ZoomManager;
import org.eclipse.jface.action.IAction;
import org.eclipse.swt.SWT;
import org.eclipse.swt.accessibility.AccessibleEvent;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.FileStoreEditorInput;
import org.eclipse.wst.xsd.ui.internal.adt.design.editparts.model.IActionProvider;
import org.eclipse.wst.xsd.ui.internal.adt.design.editparts.model.IFeedbackHandler;
import org.eclipse.wst.xsd.ui.internal.adt.design.editpolicies.KeyBoardAccessibilityEditPolicy;
import org.eclipse.wst.xsd.ui.internal.adt.design.figures.IFigureFactory;
import org.eclipse.wst.xsd.ui.internal.adt.editor.CommonMultiPageEditor;
import org.eclipse.wst.xsd.ui.internal.adt.facade.IADTObject;
import org.eclipse.wst.xsd.ui.internal.adt.facade.IADTObjectListener;
public abstract class BaseEditPart extends AbstractGraphicalEditPart implements IActionProvider, IADTObjectListener, IFeedbackHandler
{
protected static final String[] EMPTY_ACTION_ARRAY = {};
protected boolean isSelected = false;
protected boolean hasFocus = false;
protected static boolean isHighContrast = Display.getDefault().getHighContrast();
protected AccessibleEditPart accessiblePart;
public IFigureFactory getFigureFactory()
{
EditPartFactory factory = getViewer().getEditPartFactory();
Assert.isTrue(factory instanceof IFigureFactory, "EditPartFactory must be an instanceof of IFigureFactory"); //$NON-NLS-1$
return (IFigureFactory)factory;
}
public String[] getActions(Object object)
{
Object model = getModel();
if (model instanceof IActionProvider)
{
return ((IActionProvider)model).getActions(object);
}
return EMPTY_ACTION_ARRAY;
}
protected void addActionsToList(List list, IAction[] actions)
{
for (int i = 0; i < actions.length; i++)
{
list.add(actions[i]);
}
}
public void activate()
{
super.activate();
Object model = getModel();
if (model instanceof IADTObject)
{
IADTObject object = (IADTObject)model;
object.registerListener(this);
}
if (getZoomManager() != null)
getZoomManager().addZoomListener(zoomListener);
}
public void deactivate()
{
try
{
Object model = getModel();
if (model instanceof IADTObject)
{
IADTObject object = (IADTObject)model;
object.unregisterListener(this);
}
if (getZoomManager() != null)
getZoomManager().removeZoomListener(zoomListener);
}
finally
{
super.deactivate();
}
}
public void propertyChanged(Object object, String property)
{
refresh();
}
public void refresh() {
boolean doUpdateDesign = doUpdateDesign();
if (doUpdateDesign)
{
super.refresh();
}
}
public void addFeedback()
{
isSelected = true;
refreshVisuals();
}
public void removeFeedback()
{
isSelected = false;
refreshVisuals();
}
public ZoomManager getZoomManager()
{
return ((ScalableRootEditPart)getRoot()).getZoomManager();
}
public Rectangle getZoomedBounds(Rectangle r)
{
double factor = getZoomManager().getZoom();
int x = (int)Math.round(r.x * factor);
int y = (int)Math.round(r.y * factor);
int width = (int)Math.round(r.width * factor);
int height = (int)Math.round(r.height * factor);
return new Rectangle(x, y, width, height);
}
private ZoomListener zoomListener = new ZoomListener()
{
public void zoomChanged(double zoom)
{
handleZoomChanged();
}
};
protected void handleZoomChanged()
{
refreshVisuals();
}
public IEditorPart getEditorPart()
{
IEditorPart editorPart = null;
IWorkbench workbench = PlatformUI.getWorkbench();
if (workbench != null)
{
IWorkbenchWindow workbenchWindow = workbench.getActiveWorkbenchWindow();
if (workbenchWindow != null)
{
if (workbenchWindow.getActivePage() != null)
{
editorPart = workbenchWindow.getActivePage().getActiveEditor();
}
}
}
// Assert.isNotNull(editorPart);
return editorPart;
}
protected void createEditPolicies()
{
installEditPolicy(KeyBoardAccessibilityEditPolicy.KEY, new KeyBoardAccessibilityEditPolicy()
{
public EditPart getRelativeEditPart(EditPart editPart, int direction)
{
return doGetRelativeEditPart(editPart, direction);
}
});
}
public EditPart doGetRelativeEditPart(EditPart editPart, int direction)
{
return null;
}
protected boolean isFileReadOnly()
{
IWorkbench workbench = PlatformUI.getWorkbench();
if (workbench != null)
{
IWorkbenchWindow workbenchWindow = workbench.getActiveWorkbenchWindow();
if (workbenchWindow != null)
{
IWorkbenchPage page = workbenchWindow.getActivePage();
if (page != null)
{
IEditorPart editor = page.getActiveEditor();
if (editor != null)
{
IEditorInput editorInput = editor.getEditorInput();
if (!(editorInput instanceof IFileEditorInput || editorInput instanceof FileStoreEditorInput))
{
return true;
}
}
}
}
}
return false;
}
// For https://bugs.eclipse.org/bugs/show_bug.cgi?id=218281
// Don't want to refresh the design when changes are made in the source view.
protected boolean doUpdateDesign()
{
IWorkbench workbench = PlatformUI.getWorkbench();
if (workbench != null)
{
IWorkbenchWindow workbenchWindow = workbench.getActiveWorkbenchWindow();
if (workbenchWindow != null)
{
IWorkbenchPage page = workbenchWindow.getActivePage();
if (page != null)
{
IEditorPart editorPart = page.getActiveEditor();
if (editorPart instanceof CommonMultiPageEditor)
{
CommonMultiPageEditor editor = (CommonMultiPageEditor) editorPart;
GraphicalViewer viewer = (GraphicalViewer)editor.getAdapter(GraphicalViewer.class);
// Need to ensure this is the same editor we are working with since the active editor may not be
// the current, eg. at startup, there can be another XSD Editor open on the source page, so we could end
// up not populating the design view initally
if (getViewer() == viewer)
{
// If source page is active, don't update the design
return !editor.isSourcePageActive();
}
}
}
}
}
return true;
}
/**
* Try to get the italic font for the current font
* @param font
* @return
*/
protected Font getItalicFont(Font font)
{
if (font != null && !font.isDisposed())
{
FontData[] fd = font.getFontData();
if (fd.length > 0)
{
fd[0].setStyle(fd[0].getStyle() | SWT.ITALIC);
return new Font(font.getDevice(), fd);
}
}
return font;
}
protected AccessibleEditPart getAccessibleEditPart() {
if (accessiblePart ==null)
{
accessiblePart = new AccessibleGraphicalEditPart(){
public void getName(AccessibleEvent e) {
e.result = getReaderText();
}
};
}
return accessiblePart;
}
public String getReaderText()
{
return "";
}
}