Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.browsing.ui.common / src / org / simantics / browsing / ui / common / viewpoints / LazyContainerViewpoint.java

diff --git a/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/viewpoints/LazyContainerViewpoint.java b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/viewpoints/LazyContainerViewpoint.java
new file mode 100644 (file)
index 0000000..ced7e5e
--- /dev/null
+++ b/bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/viewpoints/LazyContainerViewpoint.java
@@ -0,0 +1,51 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.browsing.ui.common.viewpoints;\r
+\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
+import org.simantics.browsing.ui.content.Viewpoint;\r
+\r
+public class LazyContainerViewpoint implements Viewpoint {\r
+\r
+    private NodeContext[] children = Viewpoint.PENDING_CHILDREN;\r
+    private Boolean        hasChildren = Viewpoint.PENDING_HAS_CHILDREN;\r
+\r
+    public LazyContainerViewpoint() {\r
+    }\r
+\r
+    public LazyContainerViewpoint(NodeContext[] children) {\r
+        this.children = children;\r
+        this.hasChildren = children.length > 0;\r
+    }\r
+\r
+    public void setChildren(PrimitiveQueryUpdater updater, NodeContext[] children) {\r
+        for(NodeContext c : children) updater.incRef(c);\r
+        for(NodeContext c : this.children) updater.decRef(c);\r
+        this.children = children;\r
+    }\r
+\r
+    public void setHasChildren(Boolean hasChildren) {\r
+        this.hasChildren = hasChildren;\r
+    }\r
+\r
+    @Override\r
+    public NodeContext[] getChildren() {\r
+        return children;\r
+    }\r
+\r
+    @Override\r
+    public Boolean getHasChildren() {\r
+        return hasChildren;\r
+    }\r
+\r
+}\r