/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.seam.ui.pages.editor.edit;
import java.text.MessageFormat;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.Assert;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.editparts.ZoomListener;
import org.eclipse.gef.editparts.ZoomManager;
import org.eclipse.gef.requests.DirectEditRequest;
import org.eclipse.gef.tools.CellEditorLocator;
import org.eclipse.gef.tools.DirectEditManager;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.ICellEditorValidator;
import org.eclipse.jface.viewers.TextCellEditor;
import org.eclipse.pde.internal.ui.util.PDEJavaHelperUI;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.internal.Workbench;
import org.eclipse.ui.internal.WorkbenchWindow;
import org.eclipse.ui.part.CellEditorActionHandler;
import org.jboss.tools.common.meta.XAttribute;
import org.jboss.tools.common.model.XModelObject;
import org.jboss.tools.common.model.ui.attribute.AttributeContentProposalProviderFactory;
import org.jboss.tools.seam.pages.xml.SeamPagesXMLMessages;
import org.jboss.tools.seam.pages.xml.model.handlers.AddViewSupport;
import org.jboss.tools.seam.pages.xml.model.helpers.SeamPagesDiagramHelper;
import org.jboss.tools.seam.ui.pages.editor.ecore.pages.PagesElement;
import org.jboss.tools.seam.ui.pages.editor.figures.ExceptionFigure;
import org.jboss.tools.seam.ui.pages.editor.figures.NodeFigure;
import org.jboss.tools.seam.ui.pages.editor.figures.PageFigure;
public class ViewIDEditManager extends DirectEditManager {
private IActionBars actionBars;
private CellEditorActionHandler actionHandler;
private IAction copy, cut, paste, undo, redo, find, selectAll, delete;
private double cachedZoom = -1.0;
private Font scaledFont;
private ZoomListener zoomListener = new ZoomListener() {
public void zoomChanged(double newZoom) {
updateScaledFont(newZoom);
}
};
private XModelObject target;
private boolean rename = false;
public ViewIDEditManager(GraphicalEditPart source, CellEditorLocator locator) {
super(source, null, locator);
target = (XModelObject) ((PagesDiagramEditPart) source.getParent())
.getPagesModel().getData();
}
public ViewIDEditManager(GraphicalEditPart source, CellEditorLocator locator, boolean rename) {
this(source, locator);
this.rename = rename;
}
/**
* Creates and returns the DirectEditRequest.
* @return the direct edit request
*/
protected DirectEditRequest createDirectEditRequest() {
DirectEditRequest req = super.createDirectEditRequest();
if(rename){
req.getExtendedData().put("rename", new Boolean(true));
}
return req;
}
/**
* @see org.eclipse.gef.tools.DirectEditManager#bringDown()
*/
protected void bringDown() {
if(getEditPart().getParent() == null)return;
ZoomManager zoomMgr = (ZoomManager) getEditPart().getViewer()
.getProperty(ZoomManager.class.toString());
if (zoomMgr != null)
zoomMgr.removeZoomListener(zoomListener);
if (actionHandler != null) {
actionHandler.dispose();
actionHandler = null;
}
if (actionBars != null) {
restoreSavedActions(actionBars);
actionBars.updateActionBars();
actionBars = null;
}
super.bringDown();
disposeScaledFont();
PagesElement element = ((PagesEditPart) getEditPart())
.getElementModel();
if(!rename)
element.setParent(null);
}
protected CellEditor createCellEditorOn(Composite composite) {
return new TextCellEditor(composite, SWT.SINGLE | SWT.WRAP) {
protected void setErrorMessage(String message) {
super.setErrorMessage(message);
((WorkbenchWindow) Workbench.getInstance()
.getActiveWorkbenchWindow()).getStatusLineManager()
.setErrorMessage(message);
}
protected void editOccured(ModifyEvent e) {
String value = text.getText();
if (value == null) {
value = "";//$NON-NLS-1$
}
Object typedValue = value;
boolean oldValidState = isValueValid();
boolean newValidState = isCorrect(typedValue);
if (typedValue == null && newValidState) {
Assert
.isTrue(false,
"Validator isn't limiting the cell editor's type range");//$NON-NLS-1$
}
if (!newValidState) {
// try to insert the current value into the error message.
setErrorMessage(MessageFormat.format(getErrorMessage(),
new Object[] { value }));
} else {
setErrorMessage("");
valueChanged(oldValidState, newValidState);
}
}
protected Control createControl(Composite parent) {
Control control = super.createControl(parent);
control.setBackground(ColorConstants.white);
setErrorMessage("");
return control;
}
};
}
private void disposeScaledFont() {
if (scaledFont != null) {
scaledFont.dispose();
scaledFont = null;
}
}
protected void initCellEditor() {
NodeFigure figure = (NodeFigure) getEditPart().getFigure();
if (figure instanceof PageFigure && ((PageFigure) figure).page.getName() != null)
getCellEditor().setValue(((PageFigure) figure).page.getName());
else if (figure instanceof ExceptionFigure && ((ExceptionFigure) figure).exc.getName() != null)
getCellEditor().setValue(((ExceptionFigure) figure).exc.getName());
else
getCellEditor().setValue("");
ZoomManager zoomMgr = (ZoomManager) getEditPart().getViewer()
.getProperty(ZoomManager.class.toString());
if (zoomMgr != null) {
cachedZoom = -1.0;
updateScaledFont(zoomMgr.getZoom());
zoomMgr.addZoomListener(zoomListener);
} else
getCellEditor().getControl().setFont(figure.getFont());
actionBars = PlatformUI.getWorkbench().getActiveWorkbenchWindow()
.getActivePage().getActiveEditor().getEditorSite()
.getActionBars();
saveCurrentActions(actionBars);
actionHandler = new CellEditorActionHandler(actionBars);
actionHandler.addCellEditor(getCellEditor());
actionBars.updateActionBars();
getCellEditor().setValidator(new ViewIDValidator(target));
if (figure instanceof PageFigure){
XAttribute attr = target.getModel().getMetaData().getEntity("SeamPage21").getAttribute("view id");
AttributeContentProposalProviderFactory.registerContentAssist(target, null, attr, getCellEditor().getControl());
}else if(figure instanceof ExceptionFigure){
IProject project = (IProject)target.getModel().getProperties().get("project");
PDEJavaHelperUI.addTypeFieldAssistToText((Text)getCellEditor().getControl(), project, IJavaSearchConstants.CLASS);
}
}
private void restoreSavedActions(IActionBars actionBars) {
actionBars.setGlobalActionHandler(ActionFactory.COPY.getId(), copy);
actionBars.setGlobalActionHandler(ActionFactory.PASTE.getId(), paste);
actionBars.setGlobalActionHandler(ActionFactory.DELETE.getId(), delete);
actionBars.setGlobalActionHandler(ActionFactory.SELECT_ALL.getId(),
selectAll);
actionBars.setGlobalActionHandler(ActionFactory.CUT.getId(), cut);
actionBars.setGlobalActionHandler(ActionFactory.FIND.getId(), find);
actionBars.setGlobalActionHandler(ActionFactory.UNDO.getId(), undo);
actionBars.setGlobalActionHandler(ActionFactory.REDO.getId(), redo);
}
private void saveCurrentActions(IActionBars actionBars) {
copy = actionBars.getGlobalActionHandler(ActionFactory.COPY.getId());
paste = actionBars.getGlobalActionHandler(ActionFactory.PASTE.getId());
delete = actionBars
.getGlobalActionHandler(ActionFactory.DELETE.getId());
selectAll = actionBars.getGlobalActionHandler(ActionFactory.SELECT_ALL
.getId());
cut = actionBars.getGlobalActionHandler(ActionFactory.CUT.getId());
find = actionBars.getGlobalActionHandler(ActionFactory.FIND.getId());
undo = actionBars.getGlobalActionHandler(ActionFactory.UNDO.getId());
redo = actionBars.getGlobalActionHandler(ActionFactory.REDO.getId());
}
private void updateScaledFont(double zoom) {
if (cachedZoom == zoom)
return;
Text text = (Text) getCellEditor().getControl();
Font font = getEditPart().getFigure().getFont();
disposeScaledFont();
cachedZoom = zoom;
if (zoom == 1.0)
text.setFont(font);
else {
FontData fd = font.getFontData()[0];
fd.setHeight((int) (fd.getHeight() * zoom));
text.setFont(scaledFont = new Font(null, fd));
}
}
}
class ViewIDValidator implements ICellEditorValidator {
private XModelObject target;
public ViewIDValidator(XModelObject target){
super();
this.target = target;
}
private XModelObject getTarget() {
return target;
}
public String isValid(Object value) {
if (value == null)
return null;
String message = "";
String viewID = value.toString();
String path = AddViewSupport.revalidatePath(viewID, "");
if (!AddViewSupport.isCorrectPath(path)) {
message = SeamPagesXMLMessages.ATTRIBUTE_VIEW_ID_IS_NOT_CORRECT;
return message;
}
String pp = SeamPagesDiagramHelper.toNavigationRulePathPart(path);
boolean exists = getTarget().getChildByPath(pp) != null;
if (exists) {
message = "View exists.";
return message;
}
return null;
}
}