X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.simulation%2Fsrc%2Forg%2Fsimantics%2Fsimulation%2Fdata%2FAbstractDatasource.java;fp=bundles%2Forg.simantics.simulation%2Fsrc%2Forg%2Fsimantics%2Fsimulation%2Fdata%2FAbstractDatasource.java;h=3814b6c1638228f70ab600306434f9aec833df37;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.simulation/src/org/simantics/simulation/data/AbstractDatasource.java b/bundles/org.simantics.simulation/src/org/simantics/simulation/data/AbstractDatasource.java
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+++ b/bundles/org.simantics.simulation/src/org/simantics/simulation/data/AbstractDatasource.java
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+/*******************************************************************************
+ * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.
+ * 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.simulation.data;
+
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.simantics.utils.datastructures.ListenerList;
+
+/**
+ * @author Toni Kalajainen
+ */
+public abstract class AbstractDatasource implements Datasource {
+
+    protected ListenerList<DatasourceListener> listeners = new ListenerList<DatasourceListener>(DatasourceListener.class);
+    protected Lock readLock, writeLock;
+
+    public AbstractDatasource() {
+//        ReentrantReadWriteLock l = new ReentrantReadWriteLock();
+//        this.readLock = l.readLock();
+//        this.writeLock = l.writeLock();
+        this.readLock = this.writeLock = new ReentrantLock();
+    }
+
+    @Override
+    public void addListener(DatasourceListener listener) {
+        listeners.add(listener);
+    }
+
+    @Override
+    public void removeListener(DatasourceListener listener) {
+        listeners.remove(listener);
+    }
+
+    protected void notifyStep() {
+        for (final DatasourceListener l : listeners.getListeners()) {
+            if (l.getExecutor() == null) {
+                l.onStep( AbstractDatasource.this );
+            } else {
+                l.getExecutor().execute(new Runnable() {
+                    public void run() {
+                        l.onStep(AbstractDatasource.this);
+                    }
+                });
+            }
+        }
+    }
+
+    @Override
+    public Lock readLock() {
+        return readLock;
+    }
+
+}