Merge pull request #23 from scottresnik/jdt-enhancements

Jdt enhancements

Author: nedtwigg

src/main/java/com/diffplug/gradle/oomph/ConventionJdt.java

@@ -16,9 +16,15 @@
 package com.diffplug.gradle.oomph;
 
 import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
 import java.util.Set;
 
 import org.gradle.api.Action;
+import org.gradle.api.JavaVersion;
+
+import com.diffplug.common.collect.ImmutableList;
 
 /**
  * Adding the JDT convention to your project
@@ -33,17 +39,22 @@
  * ```gradle
  * oomphIde {
  *     jdt {
+ *         
  *         installedJre {
  *             version = '1.6.0_45'
  *             installedLocation = new File('C:/jdk1.6.0_45')
  *             markDefault = true // or false
  *             executionEnvironments = ['JavaSE-1.6'] // any execution environments can be specified here.
  *         }
+ *         compilerComplianceLevel('1.6')
+ *         classpathVariable('myClasspath', '/var/lib/repo')
  *     }
  * }
  * ```
  */
 public class ConventionJdt extends OomphConvention {
+	final static String JDT_CORE_PREFS = ".metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.jdt.core.prefs";
+
 	ConventionJdt(OomphIdeExtension extension) {
 		super(extension);
 		requireIUs(IUs.IDE, IUs.JDT, IUs.ERROR_LOG);
@@ -59,6 +70,29 @@ public void installedJre(Action<InstalledJre> action) {
 		installedJres.add(instance);
 	}
 
+	/** Sets default compliance level */
+	public void compilerComplianceLevel(String compilerComplianceLevel) {
+		List<String> JDT_COMPLIANCE_PROPS = ImmutableList.of(
+				"org.eclipse.jdt.core.compiler.codegen.targetPlatform",
+				"org.eclipse.jdt.core.compiler.compliance",
+				"org.eclipse.jdt.core.compiler.source");
+		extension.workspaceProp(JDT_CORE_PREFS, props -> {
+			JDT_COMPLIANCE_PROPS.forEach(p -> props.put(p, compilerComplianceLevel.toString()));
+			//Use default compliance settings.
+			props.put("org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode", "enabled");
+			props.put("org.eclipse.jdt.core.compiler.problem.assertIdentifier", "error");
+			props.put("org.eclipse.jdt.core.compiler.problem.enumIdentifier", "error");
+		});
+	}
+
+	/** Adds a compiler class path variable. */
+	public void classpathVariable(String name, String value) {
+		String JDT_CLASSPATH_VAR_FMT = "org.eclipse.jdt.core.classpathVariable.%s";
+		extension.workspaceProp(JDT_CORE_PREFS, props -> {
+			props.put(String.format(JDT_CLASSPATH_VAR_FMT, name), value);
+		});
+	}
+
 	@Override
 	public void close() {
 		// add installed jres

src/main/java/com/diffplug/gradle/oomph/OomphIdeExtension.java

@@ -213,6 +213,16 @@ public void addSetupActionLazy(Action<List<SetupAction>> lazyInternalSetupAction
 		setupActions.addLazyAction(lazyInternalSetupAction);
 	}
 
+	/** Links the given target into the workspace with the given name, see [eclipse manual](http://help.eclipse.org/neon/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2Fconcepts%2Fconcepts-13.htm). */
+	public void linkedResource(String linkName, Object linkTarget) {
+		final String CORE_RES_PREFS_FILE = ".metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.core.resources.prefs";
+		final String WS_PATHVAR_FMT = "pathvariable.%s";
+		workspaceProp(CORE_RES_PREFS_FILE, props -> {
+			//Eclipse cannot handle backslashes in this value.  It expects path separators to be '/'
+			props.put(String.format(WS_PATHVAR_FMT, linkName), project.file(linkTarget).getAbsolutePath().replace("\\", "/"));
+		});
+	}
+
 	////////////////
 	// ideSetupP2 //
 	////////////////