Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils.ui.workbench / src / org / simantics / utils / ui / workbench / FocusContextActivator.java

diff --git a/bundles/org.simantics.utils.ui.workbench/src/org/simantics/utils/ui/workbench/FocusContextActivator.java b/bundles/org.simantics.utils.ui.workbench/src/org/simantics/utils/ui/workbench/FocusContextActivator.java
new file mode 100644 (file)
index 0000000..b55f23b
--- /dev/null
+++ b/bundles/org.simantics.utils.ui.workbench/src/org/simantics/utils/ui/workbench/FocusContextActivator.java
@@ -0,0 +1,52 @@
+/*******************************************************************************\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.utils.ui.workbench;\r
+\r
+import org.eclipse.swt.events.FocusEvent;\r
+import org.eclipse.swt.events.FocusListener;\r
+import org.eclipse.swt.widgets.Control;\r
+import org.eclipse.ui.IWorkbenchWindow;\r
+import org.eclipse.ui.contexts.IContextActivation;\r
+import org.eclipse.ui.contexts.IContextService;\r
+\r
+public class FocusContextActivator {\r
+\r
+    private String             contextId;\r
+\r
+    private IContextActivation activation;\r
+\r
+    public FocusContextActivator(String contextId, final Control c, final IWorkbenchWindow window) {\r
+        this.contextId = contextId;\r
+\r
+        c.addFocusListener(new FocusListener() {\r
+            private IContextService getService() {\r
+                return (IContextService) window.getService(IContextService.class);\r
+            }\r
+\r
+            @Override\r
+            public void focusGained(FocusEvent e) {\r
+                IContextService contextService = getService();\r
+                String ctx = FocusContextActivator.this.contextId;\r
+                if (contextService != null && ctx != null)\r
+                    activation = contextService.activateContext(ctx);\r
+            }\r
+\r
+            @Override\r
+            public void focusLost(FocusEvent e) {\r
+                IContextService contextService = getService();\r
+                if (contextService != null && activation != null)\r
+                    contextService.deactivateContext(activation);\r
+            }\r
+        });\r
+    }\r
+\r
+}\r