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/*******************************************************************************
* Copyright (c) 2007-2020 Borland Software Corporation, CEA LIST, Artal and others
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Alexander Shatalin (Borland) - initial API and implementation
* Artem Tikhomirov (Borland) - [257632] do not rely on EditPart presence for element deletion
* Michael Golubev (Montages) - #386838 - migrate to Xtend2
* Aurelien Didier (ARTAL) - aurelien.didier51@gmail.com - Bug 569174
*****************************************************************************/
package xpt.diagram.editpolicies
import com.google.inject.Inject
import impl.diagram.commands.DeleteLinkCommand
import java.util.List
import org.eclipse.papyrus.gmf.codegen.gmfgen.GenChildNode
import org.eclipse.papyrus.gmf.codegen.gmfgen.GenNode
import xpt.Common
import xpt.editor.VisualIDRegistry
/**
* This template should be called only for non-design nodes (modelFacet != null)
* because *ItemSemanticEditPolicy responsible for dealing with semantic model
* elements and meaningless (should not be generated) for pure design nodes.
*/
@com.google.inject.Singleton class NodeItemSemanticEditPolicy {
@Inject extension Common;
@Inject extension Utils_qvto;
@Inject BaseItemSemanticEditPolicy xptBaseItemSemanticEditPolicy;
@Inject childContainerCreateCommand xptChildContainerCreateCommand;
@Inject linkCommands xptLinkCommands;
@Inject DeleteLinkCommand xptDeleteLinkCommand;
@Inject VisualIDRegistry xptVisualIDRegistry;
def className(GenNode it) '''«it.itemSemanticEditPolicyClassName»'''
def packageName(GenNode it) '''«it.getDiagram().editPoliciesPackageName»'''
def qualifiedClassName(GenNode it) '''«packageName(it)».«className(it)»'''
def fullPath(GenNode it) '''«qualifiedClassName(it)»'''
def NodeItemSemanticEditPolicy(GenNode it) '''
«copyright(getDiagram().editorGen)»
package «packageName(it)»;
«generatedClassComment()»
public class «className(it)» extends «xptBaseItemSemanticEditPolicy.qualifiedClassName(getDiagram())» {
«xptBaseItemSemanticEditPolicy.defaultConstructor(it)»
«xptChildContainerCreateCommand.childContainerCreateCommand(it.childNodes)»
«getDestroyElementCommand(it)»
«IF hasChildrenOrCompartments(it)»
«addDestroyChildNodesCommand(it)»
«ENDIF»
«xptLinkCommands.linkCommands(it)»
«additions(it)»
}
'''
def getDestroyElementCommand(GenNode it) '''
«generatedMemberComment()»
protected org.eclipse.gef.commands.Command getDestroyElementCommand(org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest req) {
org.eclipse.gmf.runtime.notation.View view = (org.eclipse.gmf.runtime.notation.View) getHost().getModel();
org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand cmd = new org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand(getEditingDomain(), null);
cmd.setTransactionNestingEnabled(false);
«destroyEdges(it, 'view')»
org.eclipse.emf.ecore.EAnnotation annotation = view.getEAnnotation("Shortcut"); «nonNLS()»
if (annotation == null) {
// there are indirectly referenced children, need extra commands: «it.childNodes.union(compartments.map(c | c.childNodes).flatten).exists[GenChildNode gcn | !isDirectlyOwned(gcn, it)]»
«IF hasChildrenOrCompartments(it)»
addDestroyChildNodesCommand(cmd);
«ENDIF»
addDestroyShortcutsCommand(cmd, view);
// delete host element
cmd.add(new org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand(req));
} else { «/*Here, we may play smart and don't generate else for non-toplevel nodes(which can't be shortcuts). Is it worth doing?*/»
cmd.add(new org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand(getEditingDomain(), view));
}
return getGEFWrapper(cmd.reduce());
}
'''
def addDestroyChildNodesCommand(GenNode it) '''
«generatedMemberComment()»
private void addDestroyChildNodesCommand(org.eclipse.gmf.runtime.common.core.command.ICompositeCommand cmd) {
org.eclipse.gmf.runtime.notation.View view = (org.eclipse.gmf.runtime.notation.View) getHost().getModel();
for (java.util.Iterator<?> nit = view.getChildren().iterator(); nit.hasNext();) {
org.eclipse.gmf.runtime.notation.Node node = (org.eclipse.gmf.runtime.notation.Node) nit.next();
switch («xptVisualIDRegistry.getVisualIDMethodCall(it.diagram)»(node)) {
«FOR cn : it.childNodes»
«destroyChildNodes(cn, 'node', it)»
«ENDFOR»
«FOR compartment : it.compartments»
«xptVisualIDRegistry.caseVisualID(compartment)»
for (java.util.Iterator<?> cit = node.getChildren().iterator(); cit.hasNext();) {
org.eclipse.gmf.runtime.notation.Node cnode = (org.eclipse.gmf.runtime.notation.Node) cit.next();
switch («xptVisualIDRegistry.getVisualIDMethodCall(it.diagram)»(cnode)) {
«FOR cn : compartment.childNodes»
«destroyChildNodes(cn, 'cnode', it)»
«ENDFOR»
}
}
break;
«ENDFOR»
}
}
}
'''
def destroyChildNodes(GenChildNode it, String nodeVar, GenNode genNode) '''
«xptVisualIDRegistry.caseVisualID(it)»
«destroyEdges(nodeVar)»
cmd.add(new org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand(new org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest(getEditingDomain(), «nodeVar».getElement(), false))); // directlyOwned: «it.isDirectlyOwned(genNode)»
// don't need explicit deletion of «nodeVar» as parent's view deletion would clean child views as well
// cmd.add(new org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand(getEditingDomain(), «nodeVar»));
break;
'''
/**
* @param view - Notation element for the passed node
* assumes 'cmd' to point to composite command
*/
def destroyEdges(GenNode it, String view) '''
«/*
* XXX: Though semantic editpolicy is supposed to create commands that operate with semantic elements only,
* old code used to delegate child/link deletion to respective editparts, which in turn led to semantic commands
* being combined with notational commands (BaseItemSemanticEditPolicy#addDeleteViewCommand()).
* ---
* Use DiagramUpdater.get[Incoming|Outgoing]View instead, to clean links that are not present on a diagram
* (but don't forget to clean corresponding Edge, if any)
*/
IF !genIncomingLinks.empty»
for (java.util.Iterator<?> it = «view».getTargetEdges().iterator(); it.hasNext();) {
org.eclipse.gmf.runtime.notation.Edge incomingLink = (org.eclipse.gmf.runtime.notation.Edge) it.next();
«FOR il : it.genIncomingLinks»
if («xptVisualIDRegistry.getVisualIDMethodCall(it.diagram)»(incomingLink) == «VisualIDRegistry::visualID(il)») {
«xptDeleteLinkCommand.newRequest(il, 'r', 'incomingLink')»
cmd.add(«xptDeleteLinkCommand.newInstance(il, 'r')»);
cmd.add(new org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand(getEditingDomain(), incomingLink));
continue;
}
«ENDFOR»
}
«ENDIF»
«IF !genOutgoingLinks.empty»
for (java.util.Iterator<?> it = «view».getSourceEdges().iterator(); it.hasNext();) {
org.eclipse.gmf.runtime.notation.Edge outgoingLink = (org.eclipse.gmf.runtime.notation.Edge) it.next();
«FOR ol : it.genOutgoingLinks»
if («xptVisualIDRegistry.getVisualIDMethodCall(it.diagram)»(outgoingLink) == «VisualIDRegistry::visualID(ol)») {
«xptDeleteLinkCommand.newRequest(ol, 'r', 'outgoingLink')»
cmd.add(«xptDeleteLinkCommand.newInstance(ol, 'r')»);
cmd.add(new org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand(getEditingDomain(), outgoingLink));
continue;
}
«ENDFOR»
}
«ENDIF»
'''
def additions(GenNode it) ''''''
private def static <T> Iterable<T> union(Iterable<? extends T> listA, Iterable<? extends T> listB) {
var List<T> result = newLinkedList();
result.addAll(listA);
result.addAll(listB);
return result;
}
}
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