bundles/org.simantics.tests.modelled.ui/src/org/simantics/tests/modelled/ui/Activator.java

   1 package org.simantics.tests.modelled.ui;
   2
   3 import java.net.URL;
   4 import java.util.ArrayList;
   5 import java.util.List;
   6
   7 import org.eclipse.jface.resource.ImageDescriptor;
   8 import org.eclipse.swt.graphics.Image;
   9 import org.eclipse.swt.graphics.Resource;
  10 import org.eclipse.ui.plugin.AbstractUIPlugin;
  11 import org.osgi.framework.BundleContext;
  12
  13 /**
  14  * The activator class controls the plug-in life cycle
  15  */
  16 public class Activator extends AbstractUIPlugin {
  17
  18         // The plug-in ID
  19         public static final String PLUGIN_ID = "org.simantics.tests.modelled.ui"; //$NON-NLS-1$
  20
  21         // The shared instance
  22         private static Activator plugin;
  23
  24         /**
  25          * The constructor
  26          */
  27         public Activator() {
  28         }
  29
  30         /*
  31          * (non-Javadoc)
  32          * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
  33          */
  34         public void start(BundleContext context) throws Exception {
  35                 super.start(context);
  36                 plugin = this;
  37         }
  38
  39         /*
  40          * (non-Javadoc)
  41          * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
  42          */
  43         public void stop(BundleContext context) throws Exception {
  44                 plugin = null;
  45                 imagesToDispose.forEach(Resource::dispose);
  46                 super.stop(context);
  47         }
  48
  49         /**
  50          * Returns the shared instance
  51          *
  52          * @return the shared instance
  53          */
  54         public static Activator getDefault() {
  55                 return plugin;
  56         }
  57
  58     public static ImageDescriptor getImageDescriptor(String relativePath) {
  59         URL url = getDefault().getBundle().getEntry(relativePath);
  60         return ImageDescriptor.createFromURL(url);
  61     }
  62
  63     private static List<Image> imagesToDispose = new ArrayList<>();
  64
  65     public static Image createManagedImage(ImageDescriptor descriptor) {
  66         Image image= descriptor.createImage();
  67         if (image == null) {
  68             image= ImageDescriptor.getMissingImageDescriptor().createImage();
  69         }
  70         imagesToDispose.add(image);
  71         return image;
  72     }
  73 }