X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2FAbstractFactoryStringModifier.java;fp=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2FAbstractFactoryStringModifier.java;h=b7c5c7eae57b3d1bbe4c4726632024abd5d48389;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/AbstractFactoryStringModifier.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/AbstractFactoryStringModifier.java new file mode 100644 index 000000000..b7c5c7eae --- /dev/null +++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/AbstractFactoryStringModifier.java @@ -0,0 +1,178 @@ +/******************************************************************************* + * Copyright (c) 2007, 2010 Association for Decentralized Information Management + * in Industry THTH ry. + * 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: + * VTT Technical Research Centre of Finland - initial API and implementation + *******************************************************************************/ +package org.simantics.browsing.ui.graph.impl; + +import org.simantics.browsing.ui.content.Labeler.Modifier; +import org.simantics.db.ReadGraph; +import org.simantics.db.RequestProcessor; +import org.simantics.db.Resource; +import org.simantics.db.Session; +import org.simantics.db.WriteGraph; +import org.simantics.db.common.request.ReadRequest; +import org.simantics.db.exception.DatabaseException; +import org.simantics.db.layer0.adapter.StringModifier; +import org.simantics.db.layer0.adapter.StringModifierFactory; + +/** + * Please implement: + *
+ * Other points of customization: + *
+ *non-null
, the modifier could not be fetched, e.g. adapted
+ * from the specified INodeContext.
+ */
+ protected Throwable modifierFailed;
+
+
+ /**
+ * @param context
+ * @param session
+ */
+ public AbstractFactoryStringModifier(Resource subject, Resource predicate, Resource object, RequestProcessor processor) {
+ this.subject = subject;
+ this.predicate = predicate;
+ this.object = object;
+ this.session = processor.getSession();
+
+ try {
+ processor.syncRequest(new ReadRequest() {
+ @Override
+ public void run(ReadGraph g) throws DatabaseException {
+ initialValue = getInitialValue(g);
+ initializeModifier(g);
+ }
+ });
+ } catch (DatabaseException e) {
+ modifierFailed = e;
+ }
+ }
+
+ protected void initializeModifier(ReadGraph graph) throws DatabaseException {
+ modifierFactory = graph.getPossibleAdapter(subject, StringModifierFactory.class);
+ if (modifierFactory != null)
+ modifier = modifierFactory.createModifier(graph, predicate, object);
+ if (modifier == null) {
+ modifierFactory = null;
+ modifier = graph.adapt(object, StringModifier.class);
+ }
+ }
+
+ /**
+ * @param g
+ * @return the value that shall be returned by {@link #getValue()}
+ */
+ protected String getInitialValue(ReadGraph g) throws DatabaseException {
+ return g.adapt(object, String.class);
+ }
+
+ /**
+ * @return the modifier
+ */
+ protected StringModifier getModifier() {
+ return modifier;
+ }
+
+ protected StringModifierFactory getModifierFactory() {
+ return modifierFactory;
+ }
+
+ @Override
+ public String getValue() {
+ return initialValue;
+ }
+
+ @Override
+ public String isValid(String label) {
+ if (modifierFailed != null)
+ return modifierFailed.getMessage();
+ if (modifier == null)
+ return "No modifier available";
+ String t = createModifierInput(label);
+ return modifier.isValid(t);
+ }
+
+ @Override
+ public final void modify(String label) {
+ if (modifierFailed != null)
+ // TODO: throw exception?
+ return;
+ String t = createModifierInput(label);
+ if (!verifyModification(t))
+ return;
+ doModify(t);
+ }
+
+ /**
+ * Called one last time before actually performing the modifying write
+ * transaction to verify whether this is really desired or not.
+ *
+ * + * This default implementation will always allow the modification to proceed. + *
+ * + * @param label the label to be given to the modifier + * @returntrue
to go forward with the transaction,
+ * false
to bail out
+ */
+ protected boolean verifyModification(String label) {
+ return true;
+ }
+
+ public abstract void doModify(String label);
+
+ /**
+ * Override if necessary.
+ *
+ * @param label
+ * @return
+ */
+ public String createModifierInput(String label) {
+ return label;
+ }
+
+};