From 7f877835ad1ce840f4f66e8be79cc5bd82c16549 Mon Sep 17 00:00:00 2001
From: Daniel Ratiu <ratiu@fortiss.org>
Date: Thu, 20 Oct 2011 07:24:33 +0000
Subject: [PATCH] cleaning the code, a better packaging and more reuse refs 233
---
.../trunk/META-INF/MANIFEST.MF | 1 +
.../TreeContentProviderBase.java | 90 +++++++++++++++++++
2 files changed, 91 insertions(+)
create mode 100644 org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/contentprovider/TreeContentProviderBase.java
diff --git a/org.fortiss.tooling.base.ui/trunk/META-INF/MANIFEST.MF b/org.fortiss.tooling.base.ui/trunk/META-INF/MANIFEST.MF
index cae25eee5..ac48d19c5 100644
--- a/org.fortiss.tooling.base.ui/trunk/META-INF/MANIFEST.MF
+++ b/org.fortiss.tooling.base.ui/trunk/META-INF/MANIFEST.MF
@@ -13,6 +13,7 @@ Export-Package: org.fortiss.tooling.base.ui,
org.fortiss.tooling.base.ui.action,
org.fortiss.tooling.base.ui.command,
org.fortiss.tooling.base.ui.compose,
+ org.fortiss.tooling.base.ui.contentprovider,
org.fortiss.tooling.base.ui.dnd,
org.fortiss.tooling.base.ui.editor,
org.fortiss.tooling.base.ui.editor.gef,
diff --git a/org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/contentprovider/TreeContentProviderBase.java b/org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/contentprovider/TreeContentProviderBase.java
new file mode 100644
index 000000000..0a1024e97
--- /dev/null
+++ b/org.fortiss.tooling.base.ui/trunk/src/org/fortiss/tooling/base/ui/contentprovider/TreeContentProviderBase.java
@@ -0,0 +1,90 @@
+/*--------------------------------------------------------------------------+
+$Id: codetemplates.xml 1 2011-01-01 00:00:01Z hoelzl $
+| |
+| Copyright 2011 ForTISS GmbH |
+| |
+| Licensed under the Apache License, Version 2.0 (the "License"); |
+| you may not use this file except in compliance with the License. |
+| You may obtain a copy of the License at |
+| |
+| http://www.apache.org/licenses/LICENSE-2.0 |
+| |
+| Unless required by applicable law or agreed to in writing, software |
+| distributed under the License is distributed on an "AS IS" BASIS, |
+| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
+| See the License for the specific language governing permissions and |
+| limitations under the License. |
++--------------------------------------------------------------------------*/
+package org.fortiss.tooling.base.ui.contentprovider;
+
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.Viewer;
+
+/**
+ * Base implementation of a tree content provider that has an empty default
+ * implementation for some methods. Some of the methods require implementation
+ * almost always (e.g. {@link #getElements(Object)} and
+ * {@link #getParent(Object)}), but for simple content providers the base
+ * implementation is sufficient.
+ *
+ * This class is taken from ConQAT.
+ *
+ * @author hummelb
+ * @author $Author: deissenb $
+ * @version $Rev: 34252 $
+ * @ConQAT.Rating RED Hash:
+ */
+public abstract class TreeContentProviderBase implements ITreeContentProvider {
+
+ /**
+ * {@inheritDoc}
+ * <p>
+ * Default implementation returns null, which makes automatic expansion of
+ * externally set selection impossible.
+ */
+ @Override
+ public Object getParent(Object inputElement) {
+ return null;
+ }
+
+ /**
+ * {@inheritDoc}
+ * <p>
+ * Uses the result of {@link #getChildren(Object)} to determine result.
+ */
+ @Override
+ public boolean hasChildren(Object inputElement) {
+ Object[] children = getChildren(inputElement);
+ return children != null && children.length > 0;
+ }
+
+ /**
+ * {@inheritDoc}
+ * <p>
+ * Just calls {@link #getChildren(Object)}.
+ */
+ @Override
+ public Object[] getElements(Object inputElement) {
+ return getChildren(inputElement);
+ }
+
+ /**
+ * {@inheritDoc}
+ * <p>
+ * Empty implementation.
+ */
+ @Override
+ public void dispose() {
+ // not needed
+ }
+
+ /**
+ * {@inheritDoc}
+ * <p>
+ * Empty implementation.
+ */
+ @Override
+ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
+ // not needed
+ }
+}
\ No newline at end of file
--
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