X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.workbench%2Fsrc%2Forg%2Fsimantics%2Fworkbench%2Finternal%2Fcontributions%2FFlushRequestsButtonTrim.java;fp=bundles%2Forg.simantics.workbench%2Fsrc%2Forg%2Fsimantics%2Fworkbench%2Finternal%2Fcontributions%2FFlushRequestsButtonTrim.java;h=85e2086429278f6efb6e9650c75fe1d2b99c3ed0;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..85e208642
--- /dev/null
+++ b/bundles/org.simantics.workbench/src/org/simantics/workbench/internal/contributions/FlushRequestsButtonTrim.java
@@ -0,0 +1,96 @@
+/*******************************************************************************
+ * 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.workbench.internal.contributions;
+
+import org.eclipse.jface.resource.JFaceResources;
+import org.eclipse.jface.resource.LocalResourceManager;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.DisposeEvent;
+import org.eclipse.swt.events.DisposeListener;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.layout.FillLayout;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.simantics.Simantics;
+import org.simantics.db.Session;
+import org.simantics.db.management.ISessionContext;
+import org.simantics.db.management.ISessionContextChangedListener;
+import org.simantics.db.management.ISessionContextProvider;
+import org.simantics.db.management.SessionContextChangedEvent;
+import org.simantics.ui.jobs.SessionGarbageCollectorJob;
+import org.simantics.workbench.internal.Activator;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class FlushRequestsButtonTrim extends Composite {
+
+    LocalResourceManager resourceManager;
+
+    class SessionContextListener implements ISessionContextChangedListener {
+        @Override
+        public void sessionContextChanged(final SessionContextChangedEvent event) {
+            if (isDisposed())
+                return;
+            getDisplay().asyncExec(new Runnable() {
+                @Override
+                public void run() {
+                    if (isDisposed())
+                        return;
+                    sessionChanged(event.getNewValue());
+                }
+            });
+        }
+    }
+
+    SessionContextListener listener = new SessionContextListener();
+    private Button b;
+
+    public FlushRequestsButtonTrim(Composite parent) {
+        super(parent, SWT.NONE);
+
+        setLayout(new FillLayout());
+
+        b = new Button(this, SWT.PUSH);
+        this.resourceManager = new LocalResourceManager(JFaceResources.getResources(), b);
+
+        final ISessionContextProvider provider = Simantics.getSessionContextProvider();
+        if (provider != null) {
+            provider.addContextChangedListener(listener);
+        }
+
+        b.setToolTipText("Flush database caches");
+        b.setImage(resourceManager.createImage(Activator.getImageDescriptor("img/paintcan.png")));
+        b.addSelectionListener(new SelectionAdapter() {
+            @Override
+            public void widgetSelected(SelectionEvent e) {
+                Session session = Simantics.peekSession();
+                if (session != null)
+                    SessionGarbageCollectorJob.getInstance().rescheduleNow();
+            }
+        });
+        b.addDisposeListener(new DisposeListener() {
+            @Override
+            public void widgetDisposed(DisposeEvent e) {
+                provider.removeContextChangedListener(listener);
+            }
+        });
+
+        sessionChanged(Simantics.getSessionContext());
+    }
+
+    private void sessionChanged(ISessionContext sessionContext) {
+        b.setEnabled(sessionContext != null);
+    }
+
+}
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