Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.debug.ui / src / org / simantics / debug / ui / SessionDebugger.java

diff --git a/bundles/org.simantics.debug.ui/src/org/simantics/debug/ui/SessionDebugger.java b/bundles/org.simantics.debug.ui/src/org/simantics/debug/ui/SessionDebugger.java
new file mode 100644 (file)
index 0000000..309ebfa
--- /dev/null
+++ b/bundles/org.simantics.debug.ui/src/org/simantics/debug/ui/SessionDebugger.java
@@ -0,0 +1,166 @@
+/*******************************************************************************\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.debug.ui;\r
+\r
+import org.eclipse.core.runtime.Assert;\r
+import org.eclipse.jface.viewers.ITreeContentProvider;\r
+import org.eclipse.jface.viewers.TreeViewer;\r
+import org.eclipse.jface.viewers.Viewer;\r
+import org.eclipse.swt.SWT;\r
+import org.eclipse.swt.events.DisposeEvent;\r
+import org.eclipse.swt.events.DisposeListener;\r
+import org.eclipse.swt.layout.GridData;\r
+import org.eclipse.swt.layout.GridLayout;\r
+import org.eclipse.swt.widgets.Composite;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.common.processor.MergingGraphRequestProcessor;\r
+import org.simantics.db.common.request.ReadRequest;\r
+import org.simantics.db.event.ChangeEvent;\r
+import org.simantics.db.event.ChangeListener;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.service.GraphChangeListenerSupport;\r
+\r
+\r
+public class SessionDebugger extends Composite {\r
+    \r
+    /**\r
+     * The Session used to access the graph. Received from outside of this\r
+     * class and therefore it is not disposed here, just used.\r
+     */\r
+    private Session                        session;\r
+    \r
+    private MergingGraphRequestProcessor              updater;\r
+    \r
+    private TreeViewer                      clusters;\r
+    \r
+    private ChangeListener changeListener = new ChangeListener() {\r
+        public void graphChanged(ChangeEvent e) {\r
+            // This makes sure that the transaction for updating this\r
+            // GraphDebugger get executed in a serialized fashion.\r
+            updater.asyncRequest(new ReadRequest() {\r
+                @Override\r
+                public void run(ReadGraph g) throws DatabaseException {\r
+                    updateContent();\r
+                }\r
+            });\r
+        }\r
+    };\r
+\r
+    /**\r
+     * @param parent\r
+     * @param style\r
+     * @param session\r
+     * @param resource the initial resource to debug or <code>null</code> for\r
+     *        initially blank UI.\r
+     */\r
+    public SessionDebugger(Composite parent, int style, final Session session) {\r
+        super(parent, style);\r
+        Assert.isNotNull(session, "session is null");\r
+        this.session = session;\r
+        updater = new MergingGraphRequestProcessor(session, 100);\r
+        \r
+        addDisposeListener(new DisposeListener() {\r
+                       @Override\r
+                       public void widgetDisposed(DisposeEvent e) {\r
+                       GraphChangeListenerSupport support = session.getService(GraphChangeListenerSupport.class);\r
+                       support.removeListener(changeListener);\r
+                       }\r
+        });\r
+        \r
+    }\r
+    \r
+    public void initializeUI() {\r
+        \r
+        setLayout(new GridLayout(1, false));\r
+        setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));\r
+\r
+        createViewer(this);\r
+        \r
+    }\r
+\r
+    public TreeViewer createViewer(Composite parent) {\r
+\r
+        clusters = new TreeViewer(parent, SWT.NONE);\r
+        clusters.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));\r
+\r
+        clusters.setContentProvider(new ITreeContentProvider() {\r
+\r
+            @Override\r
+            public Object[] getChildren(Object parentElement) {\r
+                return new Object[0];\r
+            }\r
+\r
+            @Override\r
+            public Object getParent(Object element) {\r
+                return null;\r
+            }\r
+\r
+            @Override\r
+            public boolean hasChildren(Object element) {\r
+                return false;\r
+            }\r
+\r
+            @Override\r
+            public Object[] getElements(Object inputElement) {\r
+//                return session.getDebug().getActiveClusters();\r
+                return new Object[0];\r
+            }\r
+\r
+            @Override\r
+            public void dispose() {\r
+            }\r
+\r
+            @Override\r
+            public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {\r
+            }\r
+            \r
+        });\r
+        \r
+        // Schedule a request that updates the browser content.\r
+        refreshClusters();\r
+        GraphChangeListenerSupport support = session.getService(GraphChangeListenerSupport.class);\r
+        support.addListener(changeListener);\r
+\r
+        return clusters;\r
+        \r
+    }\r
+\r
+    public void refreshClusters() {\r
+        \r
+        // Schedule a request that updates the browser content.\r
+        updater.asyncRequest(new ReadRequest() {\r
+            @Override\r
+            public void run(ReadGraph g) throws DatabaseException {\r
+                updateContent();\r
+            }\r
+        });\r
+        \r
+    }\r
+    \r
+    public void updateContent() {\r
+\r
+        clusters.getTree().getDisplay().asyncExec(new Runnable() {\r
+\r
+            @Override\r
+            public void run() {\r
+                \r
+                if(clusters.getTree().isDisposed()) return;\r
+                clusters.setInput(new Object());\r
+                \r
+            }\r
+            \r
+        });\r
+        \r
+    }\r
+\r
+}\r