X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2Finternal%2FIGECache.java;fp=bundles%2Forg.simantics.browsing.ui.common%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fcommon%2Finternal%2FIGECache.java;h=0503ba13f16771576b7ede7e738d50a1321b89e6;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/internal/IGECache.java b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/internal/IGECache.java
new file mode 100644
index 000000000..0503ba13f
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/internal/IGECache.java
@@ -0,0 +1,122 @@
+/*******************************************************************************
+ * 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.common.internal;
+
+import gnu.trove.set.hash.THashSet;
+
+import java.util.Collection;
+import java.util.Set;
+
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.NodeContext.CacheKey;
+
+public interface IGECache {
+
+    interface IGECacheEntry {
+        Object getValue();
+        void setValue(Object value);
+//        Collection<NodeQueryUpdater> getDependencies();
+//        void addDependency(NodeQueryUpdater caller);
+        NodeContext getContext();
+        CacheKey<?> getKey();
+        Collection<IGECacheEntry> getDependencies();
+        void addDependency(IGECacheEntry caller);
+        void reset();
+    }
+
+    class GECacheEntry implements IGECacheEntry {
+
+        private Object result;
+        final private NodeContext context;
+        final private CacheKey<?> key;
+        private Set<IGECacheEntry> callers = new THashSet<IGECacheEntry>(2);
+
+        public <T> GECacheEntry(NodeContext context, CacheKey<T> key, T result) {
+            this.context = context;
+            this.key = key;
+            this.result = result;
+        }
+        @Override
+        public Collection<IGECacheEntry> getDependencies() {
+            return callers;
+        }
+        @Override
+        public Object getValue() {
+            return result;
+        }
+        @Override
+        public void addDependency(IGECacheEntry caller) {
+            assert(caller != null);
+            callers.add(caller);
+        }
+        @Override
+        public void setValue(Object value) {
+            result = value;
+        }
+        @Override
+        public NodeContext getContext() {
+            return context;
+        }
+        @Override
+        public CacheKey<?> getKey() {
+            return key;
+        }
+        @Override
+        public void reset() {
+            callers = new THashSet<IGECacheEntry>(2);
+        }
+
+        @Override
+        public int hashCode() {
+            return 31 * context.hashCode() | key.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object object) {
+
+            if (this == object)
+                return true;
+            else if (object == null)
+                return false;
+            else if (getClass() != object.getClass())
+                return false;
+
+            GECacheEntry i = (GECacheEntry)object;
+
+            return key.equals(i.key) && context.equals(i.context);
+
+        }
+
+//        @Override
+//        public String toString() {
+//            return "GECacheEntry[" + result + ", " + context + ", " + key + "]";
+//        }
+
+    }
+
+    <T> IGECacheEntry getEntry(NodeContext context, CacheKey<T> key);
+
+    <T> IGECacheEntry put(NodeContext context, CacheKey<T> key, T value);
+    <T> void putTreeReference(NodeContext context, CacheKey<T> key, UIElementReference reference);
+
+    <T> T get(NodeContext context, CacheKey<T> key);
+    <T> Set<UIElementReference> getTreeReference(NodeContext context, CacheKey<T> key);
+
+    <T> void remove(NodeContext context, CacheKey<T> key);
+    <T> Set<UIElementReference> removeTreeReference(NodeContext context, CacheKey<T> key);
+    
+    boolean isShown(NodeContext context);
+    void incRef(NodeContext context);
+    void decRef(NodeContext context);
+    
+    void dispose();
+}