X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fsynchronization%2FCompositeHintSynchronizer.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fsynchronization%2FCompositeHintSynchronizer.java;h=4d63a16ff868d6d2b79d643803b9049c4ac539de;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/CompositeHintSynchronizer.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/CompositeHintSynchronizer.java
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+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/CompositeHintSynchronizer.java
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+/*******************************************************************************
+ * 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.diagram.synchronization;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.simantics.utils.datastructures.hints.IHintObservable;
+import org.simantics.utils.datastructures.hints.IHintContext.Key;
+
+/**
+ * Synchronizer that is composed of several other synchronizers. It will consult
+ * the composed synchronizers in the order in which they were specified. Should
+ * a composed synchronizer report that it has handled the synchronization, i.e.
+ * returns <code>true</code>, the consultation will end there.
+ * 
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
+ * @author Tuukka Lehtonen
+ */
+public class CompositeHintSynchronizer implements IHintSynchronizer {
+
+    private final List<IHintSynchronizer> synchronizers = new ArrayList<IHintSynchronizer>();
+
+    public CompositeHintSynchronizer() {
+    }
+
+    public CompositeHintSynchronizer(IHintSynchronizer... synchronizers) {
+        for (IHintSynchronizer s : synchronizers)
+            this.synchronizers.add(s);
+    }
+
+    public CompositeHintSynchronizer(Collection<IHintSynchronizer> synchronizers) {
+        this.synchronizers.addAll(synchronizers);
+    }
+
+    public CompositeHintSynchronizer add(IHintSynchronizer s) {
+        synchronizers.add(s);
+        return this;
+    }
+
+    @Override
+    public int synchronize(ISynchronizationContext context, IHintObservable observable) {
+        int count = 0;
+        for (IHintSynchronizer synchronizer : synchronizers) {
+            count += synchronizer.synchronize(context, observable);
+        }
+        return count;
+    }
+
+    @Override
+    public boolean hintChanged(ISynchronizationContext context, IHintObservable sender, Key key, Object oldValue,
+            Object newValue) {
+        for (IHintSynchronizer s : synchronizers) {
+            if (s.hintChanged(context, sender, key, oldValue, newValue))
+                return true;
+        }
+        return false;
+    }
+
+    @Override
+    public boolean hintRemoved(ISynchronizationContext context, IHintObservable sender, Key key, Object oldValue) {
+        for (IHintSynchronizer s : synchronizers) {
+            if (s.hintRemoved(context, sender, key, oldValue))
+                return true;
+        }
+        return false;
+    }
+
+}