Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.workbench / src / org / simantics / workbench / internal / contributions / FlushRequestsButtonTrim.java

diff --git a/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/contributions/FlushRequestsButtonTrim.java b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/contributions/FlushRequestsButtonTrim.java
new file mode 100644 (file)
index 0000000..85e2086
--- /dev/null
+++ b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/contributions/FlushRequestsButtonTrim.java
@@ -0,0 +1,96 @@
+/*******************************************************************************\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.workbench.internal.contributions;\r
+\r
+import org.eclipse.jface.resource.JFaceResources;\r
+import org.eclipse.jface.resource.LocalResourceManager;\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.events.SelectionAdapter;\r
+import org.eclipse.swt.events.SelectionEvent;\r
+import org.eclipse.swt.layout.FillLayout;\r
+import org.eclipse.swt.widgets.Button;\r
+import org.eclipse.swt.widgets.Composite;\r
+import org.simantics.Simantics;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.management.ISessionContext;\r
+import org.simantics.db.management.ISessionContextChangedListener;\r
+import org.simantics.db.management.ISessionContextProvider;\r
+import org.simantics.db.management.SessionContextChangedEvent;\r
+import org.simantics.ui.jobs.SessionGarbageCollectorJob;\r
+import org.simantics.workbench.internal.Activator;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class FlushRequestsButtonTrim extends Composite {\r
+\r
+    LocalResourceManager resourceManager;\r
+\r
+    class SessionContextListener implements ISessionContextChangedListener {\r
+        @Override\r
+        public void sessionContextChanged(final SessionContextChangedEvent event) {\r
+            if (isDisposed())\r
+                return;\r
+            getDisplay().asyncExec(new Runnable() {\r
+                @Override\r
+                public void run() {\r
+                    if (isDisposed())\r
+                        return;\r
+                    sessionChanged(event.getNewValue());\r
+                }\r
+            });\r
+        }\r
+    }\r
+\r
+    SessionContextListener listener = new SessionContextListener();\r
+    private Button b;\r
+\r
+    public FlushRequestsButtonTrim(Composite parent) {\r
+        super(parent, SWT.NONE);\r
+\r
+        setLayout(new FillLayout());\r
+\r
+        b = new Button(this, SWT.PUSH);\r
+        this.resourceManager = new LocalResourceManager(JFaceResources.getResources(), b);\r
+\r
+        final ISessionContextProvider provider = Simantics.getSessionContextProvider();\r
+        if (provider != null) {\r
+            provider.addContextChangedListener(listener);\r
+        }\r
+\r
+        b.setToolTipText("Flush database caches");\r
+        b.setImage(resourceManager.createImage(Activator.getImageDescriptor("img/paintcan.png")));\r
+        b.addSelectionListener(new SelectionAdapter() {\r
+            @Override\r
+            public void widgetSelected(SelectionEvent e) {\r
+                Session session = Simantics.peekSession();\r
+                if (session != null)\r
+                    SessionGarbageCollectorJob.getInstance().rescheduleNow();\r
+            }\r
+        });\r
+        b.addDisposeListener(new DisposeListener() {\r
+            @Override\r
+            public void widgetDisposed(DisposeEvent e) {\r
+                provider.removeContextChangedListener(listener);\r
+            }\r
+        });\r
+\r
+        sessionChanged(Simantics.getSessionContext());\r
+    }\r
+\r
+    private void sessionChanged(ISessionContext sessionContext) {\r
+        b.setEnabled(sessionContext != null);\r
+    }\r
+\r
+}
\ No newline at end of file