From c1392befa4126fb1b36f195b5702905c28be3cca Mon Sep 17 00:00:00 2001
From: Hannes Wellmann <wellmann.hannes1@gmx.net>
Date: Sun, 30 Jun 2024 18:16:51 +0200
Subject: [PATCH] Consider EE requirements in EE-Section of ManifestEditor

---
 .../plugin/ExecutionEnvironmentSection.java   | 55 +++++++++++++++----
 1 file changed, 44 insertions(+), 11 deletions(-)

diff --git a/ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/editor/plugin/ExecutionEnvironmentSection.java b/ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/editor/plugin/ExecutionEnvironmentSection.java
index 82cefeeeec..f5ef92152f 100644
--- a/ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/editor/plugin/ExecutionEnvironmentSection.java
+++ b/ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/editor/plugin/ExecutionEnvironmentSection.java
@@ -15,6 +15,7 @@
  *******************************************************************************/
 package org.eclipse.pde.internal.ui.editor.plugin;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.StringJoiner;
@@ -23,6 +24,7 @@
 import org.eclipse.core.resources.IncrementalProjectBuilder;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.ILog;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
@@ -41,6 +43,7 @@
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.ViewerDropAdapter;
 import org.eclipse.jface.window.Window;
+import org.eclipse.osgi.util.ManifestElement;
 import org.eclipse.pde.core.IModelChangedEvent;
 import org.eclipse.pde.core.plugin.IPluginModelBase;
 import org.eclipse.pde.core.plugin.PluginRegistry;
@@ -51,6 +54,7 @@
 import org.eclipse.pde.internal.core.text.bundle.ExecutionEnvironment;
 import org.eclipse.pde.internal.core.text.bundle.PDEManifestElement;
 import org.eclipse.pde.internal.core.text.bundle.RequiredExecutionEnvironmentHeader;
+import org.eclipse.pde.internal.core.util.ManifestUtils;
 import org.eclipse.pde.internal.ui.IHelpContextIds;
 import org.eclipse.pde.internal.ui.PDEPlugin;
 import org.eclipse.pde.internal.ui.PDEPluginImages;
@@ -78,7 +82,10 @@
 import org.eclipse.ui.forms.widgets.Hyperlink;
 import org.eclipse.ui.forms.widgets.Section;
 import org.eclipse.ui.forms.widgets.TableWrapData;
+import org.osgi.framework.BundleException;
 import org.osgi.framework.Constants;
+import org.osgi.framework.namespace.ExecutionEnvironmentNamespace;
+import org.osgi.resource.Namespace;
 
 public class ExecutionEnvironmentSection extends TableSection {
 
@@ -140,12 +147,7 @@ protected void createClient(Section section, FormToolkit toolkit) {
 		fEETable = tablePart.getTableViewer();
 		fEETable.setContentProvider((IStructuredContentProvider) inputElement -> {
 			if (inputElement instanceof IBundleModel model) {
-				IBundle bundle = model.getBundle();
-				@SuppressWarnings("deprecation")
-				IManifestHeader header = bundle.getManifestHeader(Constants.BUNDLE_REQUIREDEXECUTIONENVIRONMENT);
-				if (header instanceof RequiredExecutionEnvironmentHeader breeHeader) {
-					return breeHeader.getEnvironments();
-				}
+				return getRequiredEEs(model.getBundle()).toArray(String[]::new);
 			}
 			return new Object[0];
 		});
@@ -331,14 +333,45 @@ private String getLineDelimiter() {
 	}
 
 	private IExecutionEnvironment[] getEnvironments() {
-		RequiredExecutionEnvironmentHeader header = getHeader();
 		IExecutionEnvironmentsManager eeManager = JavaRuntime.getExecutionEnvironmentsManager();
 		IExecutionEnvironment[] envs = eeManager.getExecutionEnvironments();
-		if (header == null) {
-			return envs;
+		IBundle bundle = getBundle();
+		if (bundle != null) {
+			List<IExecutionEnvironment> requiredEEs = getRequiredEEs(bundle).stream() //
+					.map(eeManager::getEnvironment).toList();
+			if (!requiredEEs.isEmpty()) {
+				return Arrays.stream(envs).filter(ee -> !requiredEEs.contains(ee))
+						.toArray(IExecutionEnvironment[]::new);
+			}
+		}
+		return envs;
+	}
+
+	private static List<String> getRequiredEEs(IBundle bundle) {
+		List<String> requiredEEs = new ArrayList<>();
+		@SuppressWarnings("deprecation")
+		IManifestHeader header = bundle.getManifestHeader(Constants.BUNDLE_REQUIREDEXECUTIONENVIRONMENT);
+		if (header instanceof RequiredExecutionEnvironmentHeader breeHeader) {
+			for (ExecutionEnvironment ee : breeHeader.getEnvironments()) {
+				requiredEEs.add(ee.getName());
+			}
+		}
+		IManifestHeader requiredCapabilitiesHeader = bundle.getManifestHeader(Constants.REQUIRE_CAPABILITY);
+		if (requiredCapabilitiesHeader != null) {
+			String eeRequirement = requiredCapabilitiesHeader.getValue();
+			try {
+				ManifestElement[] required = ManifestElement.parseHeader(Constants.REQUIRE_CAPABILITY, eeRequirement);
+				for (ManifestElement requiredCapability : required) {
+					if (ExecutionEnvironmentNamespace.EXECUTION_ENVIRONMENT_NAMESPACE.equals(requiredCapability.getValue())) {
+						String filter = requiredCapability.getDirective(Namespace.REQUIREMENT_FILTER_DIRECTIVE);
+						ManifestUtils.parseRequiredEEsFromFilter(filter, requiredEEs::add);
+					}
+				}
+			} catch (BundleException e) {
+				ILog.get().error("Failed to parse " + Constants.REQUIRE_CAPABILITY + " header: " + eeRequirement, e); //$NON-NLS-1$//$NON-NLS-2$
+			}
 		}
-		List<IExecutionEnvironment> ees = header.getElementNames().stream().map(eeManager::getEnvironment).toList();
-		return Arrays.stream(envs).filter(ee -> !ees.contains(ee)).toArray(IExecutionEnvironment[]::new);
+		return requiredEEs;
 	}
 
 	@Override