diff options
Diffstat (limited to 'org.eclipse.gmt.modisco.infra.browser/src/org/eclipse/gmt/modisco/infra/browser/core/DragAndDropOnLinkCommand.java')
| -rw-r--r-- | org.eclipse.gmt.modisco.infra.browser/src/org/eclipse/gmt/modisco/infra/browser/core/DragAndDropOnLinkCommand.java | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/org.eclipse.gmt.modisco.infra.browser/src/org/eclipse/gmt/modisco/infra/browser/core/DragAndDropOnLinkCommand.java b/org.eclipse.gmt.modisco.infra.browser/src/org/eclipse/gmt/modisco/infra/browser/core/DragAndDropOnLinkCommand.java deleted file mode 100644 index cff2279dc..000000000 --- a/org.eclipse.gmt.modisco.infra.browser/src/org/eclipse/gmt/modisco/infra/browser/core/DragAndDropOnLinkCommand.java +++ /dev/null @@ -1,170 +0,0 @@ -/*******************************************************************************
- * Copyright (c) 2010, 2011 Mia-Software.
- * 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:
- * Nicolas Bros (Mia-Software) - initial API and implementation
- *******************************************************************************/
-package org.eclipse.gmt.modisco.infra.browser.core;
-
-import java.util.Collection;
-import java.util.Collections;
-
-import org.eclipse.emf.common.command.Command;
-import org.eclipse.emf.common.command.IdentityCommand;
-import org.eclipse.emf.common.command.UnexecutableCommand;
-import org.eclipse.emf.ecore.EClass;
-import org.eclipse.emf.ecore.EObject;
-import org.eclipse.emf.ecore.EReference;
-import org.eclipse.emf.ecore.resource.Resource;
-import org.eclipse.emf.edit.command.AddCommand;
-import org.eclipse.emf.edit.command.CopyCommand;
-import org.eclipse.emf.edit.command.DragAndDropCommand;
-import org.eclipse.emf.edit.command.RemoveCommand;
-import org.eclipse.emf.edit.command.SetCommand;
-import org.eclipse.emf.edit.domain.EditingDomain;
-import org.eclipse.gmt.modisco.infra.browser.uicore.internal.model.ITreeElement;
-import org.eclipse.gmt.modisco.infra.browser.uicore.internal.model.LinkItem;
-
-/** Handles drag&drop on a {@link LinkItem} */
-public class DragAndDropOnLinkCommand extends DragAndDropCommand {
-
- private final LinkItemEx linkItem;
-
- public DragAndDropOnLinkCommand(final EditingDomain editingDomain, final LinkItemEx linkItem,
- final float location, final int operations, final int operation,
- final Collection<?> collection) {
- super(editingDomain, linkItem, location, operations, operation, collection);
- this.linkItem = linkItem;
- }
-
- public LinkItem getLinkItem() {
- return this.linkItem;
- }
-
- public Command getDropCommand() {
- return this.dropCommand;
- }
-
- @Override
- protected Object getParent(final Object object) {
- if (object instanceof ITreeElement) {
- ITreeElement treeElement = (ITreeElement) object;
- return treeElement.getTreeParent();
- }
- return Collections.emptyList();
- }
-
- @Override
- protected Collection<?> getChildren(final Object object) {
- if (object instanceof ITreeElement) {
- ITreeElement treeElement = (ITreeElement) object;
- return treeElement.getChildren();
- }
- return Collections.emptyList();
- }
-
- @Override
- protected boolean prepareDropInsert() {
- return false;
- }
-
- @Override
- protected boolean prepareDropMoveOn() {
- if (isCrossDomain()) {
- EObject eObject = this.linkItem.getParent();
- Resource resource = eObject.eResource();
- if (resource != null && resource.getResourceSet() != null) {
- this.collection = DragAndDropUtils.translateCrossDomainObjects(this.collection,
- resource.getResourceSet());
- }
- }
- if (isCrossDomain() || !checkReferenceType(this.linkItem.getReference(), this.collection)) {
- this.dragCommand = IdentityCommand.INSTANCE;
- this.dropCommand = UnexecutableCommand.INSTANCE;
- } else {
- if (this.linkItem.getReference().isContainment()) {
- this.dropCommand = AddCommand.create(this.domain, this.linkItem.getParent(), null,
- this.collection);
- this.dragCommand = RemoveCommand.create(this.domain, this.collection);
- } else if (this.linkItem.getReference().isContainer()) {
- this.dropCommand = UnexecutableCommand.INSTANCE;
- this.dragCommand = IdentityCommand.INSTANCE;
- } else {
- if (this.linkItem.getReference().isMany()) {
- this.dropCommand = AddCommand.create(this.domain, this.linkItem.getParent(),
- this.linkItem.getReference(), this.collection);
- } else {
- if (this.collection.size() == 1) {
- this.dropCommand = SetCommand.create(this.domain,
- this.linkItem.getParent(), this.linkItem.getReference(),
- this.collection.iterator().next());
- } else {
- this.dropCommand = UnexecutableCommand.INSTANCE;
- }
- }
- this.dragCommand = IdentityCommand.INSTANCE;
- }
- }
-
- boolean result = this.dragCommand.canExecute() && this.dropCommand.canExecute();
- return result;
- }
-
- /**
- * Check that each element in the collection can be assigned using the given
- * reference
- */
- private boolean checkReferenceType(final EReference reference, final Collection<?> elements) {
- EClass eReferenceType = reference.getEReferenceType();
- for (Object o : elements) {
- if (!eReferenceType.isInstance(o)) {
- return false;
- }
- }
- return true;
- }
-
- @Override
- protected boolean prepareDropCopyOn() {
- if (!checkReferenceType(this.linkItem.getReference(), this.collection)) {
- this.dragCommand = IdentityCommand.INSTANCE;
- this.dropCommand = UnexecutableCommand.INSTANCE;
- return false;
- }
-
- this.dragCommand = CopyCommand.create(this.domain, this.collection);
-
- if (this.dragCommand.canExecute() && this.dragCommand.canUndo()) {
- this.dragCommand.execute();
- this.isDragCommandExecuted = true;
- this.dropCommand = AddCommand.create(this.domain, this.linkItem.getParent(), null,
- this.dragCommand.getResult());
- if (analyzeForNonContainment(this.dropCommand)) {
- this.dropCommand.dispose();
- this.dropCommand = UnexecutableCommand.INSTANCE;
-
- this.dragCommand.undo();
- this.dragCommand.dispose();
- this.isDragCommandExecuted = false;
- this.dragCommand = IdentityCommand.INSTANCE;
- }
- } else {
- this.dropCommand = UnexecutableCommand.INSTANCE;
- }
-
- boolean result = this.dragCommand.canExecute() && this.dropCommand.canExecute();
- return result;
- }
-
- @Override
- protected boolean prepareDropLinkOn() {
- this.dragCommand = IdentityCommand.INSTANCE;
- this.dropCommand = UnexecutableCommand.INSTANCE;
- return false;
- }
-
-}
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