Merge tag 'v2.3.20' into testing

[gpl/argeo-jcr.git] / swt / org.argeo.tool.devops.e4 / src / org / argeo / cms / e4 / maintenance / AbstractOsgiComposite.java

diff --git a/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/maintenance/AbstractOsgiComposite.java b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/maintenance/AbstractOsgiComposite.java
new file mode 100644 (file)
index 0000000..4fd1d68
--- /dev/null
+++ b/swt/org.argeo.tool.devops.e4/src/org/argeo/cms/e4/maintenance/AbstractOsgiComposite.java
@@ -0,0 +1,41 @@
+package org.argeo.cms.e4.maintenance;
+
+import java.util.Collection;
+
+import org.argeo.api.cms.CmsLog;
+import org.argeo.cms.swt.CmsSwtUtils;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Composite;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkUtil;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.framework.ServiceReference;
+
+abstract class AbstractOsgiComposite extends Composite {
+       private static final long serialVersionUID = -4097415973477517137L;
+       protected final BundleContext bc = FrameworkUtil.getBundle(getClass()).getBundleContext();
+       protected final CmsLog log = CmsLog.getLog(getClass());
+
+       public AbstractOsgiComposite(Composite parent, int style) {
+               super(parent, style);
+               parent.setLayout(CmsSwtUtils.noSpaceGridLayout());
+               setLayout(CmsSwtUtils.noSpaceGridLayout());
+               setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false));
+               initUi(style);
+       }
+
+       protected abstract void initUi(int style);
+
+       protected <T> T getService(Class<? extends T> clazz) {
+               return bc.getService(bc.getServiceReference(clazz));
+       }
+
+       protected <T> Collection<ServiceReference<T>> getServiceReferences(Class<T> clazz, String filter) {
+               try {
+                       return bc.getServiceReferences(clazz, filter);
+               } catch (InvalidSyntaxException e) {
+                       throw new IllegalArgumentException("Filter " + filter + " is invalid", e);
+               }
+       }
+}