List OSGI plugins in the export list

The commit fixes OSGi plugins (that have been created using standard
OSGi framework with 'Generate OSGi metadata automatically' feature) not
being displayed in the export dialog box. This happens because an OSGi
project has a pde.bnd file, unlike the eclipse plugins, which has
build.properties. Therefore the previous behaviour was to check for the
presence of a build.properties file for validating a plugin project.
This assumption breaks with the new type.

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/ICoreConstants.java

@@ -60,6 +60,9 @@ public interface ICoreConstants {
 	/** Constant for the string <code>build.properties</code> */
 	String BUILD_FILENAME_DESCRIPTOR = "build.properties"; //$NON-NLS-1$
 
+	/** Constant for the string <code>pde.bnd</code> */
+	String BND_FILENAME_DESCRIPTOR = "pde.bnd"; //$NON-NLS-1$
+
 	/**
 	 * Default version number for plugin and feature
 	 */

ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/wizards/exports/PluginExportWizardPage.java

@@ -53,7 +53,8 @@ public Object[] getListElements() {
 		for (int i = 0; i < projects.length; i++) {
 			if (!WorkspaceModelManager.isBinaryProject(projects[i]) && WorkspaceModelManager.isPluginProject(projects[i])) {
 				IModel model = PluginRegistry.findModel(projects[i]);
-				if (model != null && isValidModel(model) && hasBuildProperties((IPluginModelBase) model)) {
+				if (model != null && isValidModel(model) && (hasBuildProperties((IPluginModelBase) model)
+						|| hasPdeBndDescriptor((IPluginModelBase) model))) {
 					result.add(model);
 				}
 			}
@@ -71,6 +72,16 @@ private boolean hasBuildProperties(IPluginModelBase model) {
 		return file.exists();
 	}
 
+	private boolean hasPdeBndDescriptor(IPluginModelBase model) {
+		File bin = new File(model.getInstallLocation());
+		if (bin.exists()) {
+			File file = new File(bin.getParent(), ICoreConstants.BND_FILENAME_DESCRIPTOR);
+			return file.exists();
+		}
+		return false;
+
+	}
+
 	@Override
 	protected boolean isValidModel(IModel model) {
 		return model != null && model instanceof IPluginModelBase;