org.argeo.cms.e4/src/org/argeo/cms/e4/monitoring/ModulesView.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.cms.e4.monitoring;
  17
  18 import java.util.ArrayList;
  19 import java.util.List;
  20
  21 import javax.annotation.PostConstruct;
  22
  23 import org.argeo.eclipse.ui.TreeParent;
  24 import org.eclipse.e4.ui.di.Focus;
  25 import org.eclipse.jface.viewers.ITreeContentProvider;
  26 import org.eclipse.jface.viewers.TreeViewer;
  27 import org.eclipse.jface.viewers.Viewer;
  28 import org.eclipse.swt.SWT;
  29 import org.eclipse.swt.widgets.Composite;
  30 import org.osgi.framework.Bundle;
  31 import org.osgi.framework.BundleContext;
  32 import org.osgi.framework.FrameworkUtil;
  33
  34 /** The OSGi runtime from a module perspective. */
  35 public class ModulesView {
  36         private final static BundleContext bc = FrameworkUtil.getBundle(ModulesView.class).getBundleContext();
  37         private TreeViewer viewer;
  38
  39         @PostConstruct
  40         public void createPartControl(Composite parent) {
  41                 viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  42                 viewer.setContentProvider(new ModulesContentProvider());
  43                 viewer.setLabelProvider(new ModulesLabelProvider());
  44                 viewer.setInput(bc);
  45         }
  46
  47         @Focus
  48         public void setFocus() {
  49                 viewer.getTree().setFocus();
  50         }
  51
  52         private class ModulesContentProvider implements ITreeContentProvider {
  53                 private static final long serialVersionUID = 3819934804640641721L;
  54
  55                 public Object[] getElements(Object inputElement) {
  56                         return getChildren(inputElement);
  57                 }
  58
  59                 public Object[] getChildren(Object parentElement) {
  60                         if (parentElement instanceof BundleContext) {
  61                                 BundleContext bundleContext = (BundleContext) parentElement;
  62                                 Bundle[] bundles = bundleContext.getBundles();
  63
  64                                 List<BundleNode> modules = new ArrayList<BundleNode>();
  65                                 for (Bundle bundle : bundles) {
  66                                         if (bundle.getState() == Bundle.ACTIVE)
  67                                                 modules.add(new BundleNode(bundle, true));
  68                                 }
  69                                 return modules.toArray();
  70                         } else if (parentElement instanceof TreeParent) {
  71                                 return ((TreeParent) parentElement).getChildren();
  72                         } else {
  73                                 return null;
  74                         }
  75                 }
  76
  77                 public Object getParent(Object element) {
  78                         // TODO Auto-generated method stub
  79                         return null;
  80                 }
  81
  82                 public boolean hasChildren(Object element) {
  83                         if (element instanceof TreeParent) {
  84                                 return ((TreeParent) element).hasChildren();
  85                         }
  86                         return false;
  87                 }
  88
  89                 public void dispose() {
  90                 }
  91
  92                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  93                 }
  94         }
  95
  96         private class ModulesLabelProvider extends StateLabelProvider {
  97                 private static final long serialVersionUID = 5290046145534824722L;
  98
  99                 @Override
 100                 public String getText(Object element) {
 101                         if (element instanceof BundleNode)
 102                                 return element.toString() + " [" + ((BundleNode) element).getBundle().getBundleId() + "]";
 103                         return element.toString();
 104                 }
 105         }
 106 }