/*******************************************************************************
* 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.common.meta.action.impl;
import java.util.*;
import org.jboss.tools.common.meta.*;
import org.jboss.tools.common.meta.action.*;
import org.jboss.tools.common.model.*;
import org.jboss.tools.common.model.undo.*;
public class AbstractHandler implements XActionHandler {
protected XAction action;
protected XEntityData[] data;
public AbstractHandler() {}
public final void setAction(XAction action) {
this.action = action;
}
public XEntityData[] getEntityData(XModelObject object) {
setDefaultData(object);
return data;
}
public void executeHandler(XModelObject object, Properties p) throws XModelException {}
public boolean getSignificantFlag(XModelObject object) {
return false;
}
public boolean isEnabled(XModelObject object) {
return false;
}
public boolean hide(boolean enabled) {
return ((XActionImpl)action).hide0(enabled);
}
public void setDefaultData(XModelObject object) {
setDefaultValues();
}
public void setDefaultValues() {
for (int i = 0; i < data.length; i++)
((XEntityDataImpl)data[i]).setDefaultValues();
}
public void setData(XEntityData[] data) {
this.data = data;
}
protected void checkEnvironment(Object environment) {}
//multi//
public boolean isEnabled(XModelObject object, XModelObject[] objects) {
if(object == null || objects == null || objects.length < 2) return isEnabled(object);
if(action.getWizardClassName() != null && action.getWizardClassName().length() > 0) return false;
XModelObject p = object.getParent();
XModelEntity entity = object.getModelEntity();
for (int i = 0; i < objects.length; i++) {
if(p != objects[i].getParent()
&& (object.getFileType() != objects[i].getFileType() || object.getFileType() != XModelObject.FILE)
&& !ignoreDifferentParents(objects[i].getModelEntity().getName(), entity.getName())) {
return false;
}
}
String path = action.getPath();
for (int i = 0; i < objects.length; i++) {
XModelEntity ent = objects[i].getModelEntity();
if(ent == entity) {
if(!action.isEnabled(objects[i])) return false;
}
XAction a = (XAction)((XActionListImpl)ent.getActionList()).getByPath(path);
if(a == null || (action.getWizardClassName() != null && a.getWizardClassName().length() > 0)
|| !a.isEnabled(objects[i])) return false;
}
return action.isEnabled(object);
}
protected boolean ignoreDifferentParents(String entity1, String entity2) {
return entity1.equals(entity2);
}
public void executeHandler(XModelObject object, XModelObject[] objects, java.util.Properties p) throws XModelException {
if(!isEnabled(object, objects)) return;
if(object == null || objects == null || objects.length < 2) {
executeHandler(object, p);
return;
}
String path = action.getPath();
XModelEntity entity = object.getModelEntity();
for (int i = 0; i < objects.length; i++) {
XModelEntity ent = objects[i].getModelEntity();
if(ent == entity) {
executeHandler(objects[i], p);
continue;
}
XAction a = (XAction)((XActionListImpl) ent.getActionList()).getByPath(path);
if(a == null || !a.isEnabled(objects[i])) continue;
mergeEntityData(data, a.getEntityData(objects[i]));
a.executeHandler(objects[i], p);
}
}
protected void mergeEntityData(XEntityData[] source, XEntityData[] target) {
int ic = source.length;
if(target.length < ic) ic = target.length;
for (int i = 0; i < ic; i++) {
XAttributeData[] ds = source[i].getAttributeData();
XAttributeData[] dt = target[i].getAttributeData();
mergeAttributeData(ds, dt);
}
}
protected void mergeAttributeData(XAttributeData[] source, XAttributeData[] target) {
int ic = source.length;
if(target.length < ic) ic = target.length;
for (int i = 0; i < ic; i++) {
target[i].setValue(source[i].getValue());
}
}
// dirty hacks
/*
* Should be called only from overrided method "isEnabled",
* being aware that wizard value specified in meta
* gets meaningless.
*/
protected final void setWizardClassName(String wizard) {
((XActionImpl)action).setWizardClassName(wizard);
}
public final void executeInTransaction(XModelObject object, Properties p, String transactionName, int transactionKind) throws XModelException {
if(!isEnabled(object)) return;
XUndoManager undo = object.getModel().getUndoManager();
XTransactionUndo u = new XTransactionUndo(transactionName, transactionKind);
undo.addUndoable(u);
try {
transaction(object, p);
} catch (XModelException e) {
undo.rollbackTransactionInProgress();
throw e;
} finally {
u.commit();
}
}
protected void transaction(XModelObject object, Properties p) throws XModelException {
}
}