Implement in-place rename (#513)

* Implement in-place rename

Signed-off-by: Luna <[email protected]>

* blank commit for signing

Signed-off-by: Luna <[email protected]>

* undo blank commit

Signed-off-by: Luna <[email protected]>

Author: l-Luna

src/main/java/org/antlr/intellij/plugin/refactor/ANTLRv4RefactoringSupport.java

@@ -0,0 +1,20 @@
+package org.antlr.intellij.plugin.refactor;
+
+import com.intellij.lang.refactoring.RefactoringSupportProvider;
+import com.intellij.psi.PsiElement;
+import org.antlr.intellij.plugin.ANTLRv4Language;
+import org.antlr.intellij.plugin.psi.RuleSpecNode;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class ANTLRv4RefactoringSupport extends RefactoringSupportProvider{
+	
+	public boolean isAvailable(@NotNull PsiElement context){
+		return context.getLanguage().isKindOf(ANTLRv4Language.INSTANCE);
+	}
+	
+	// variable in-place rename only applies to elements limited to one file
+	public boolean isMemberInplaceRenameAvailable(@NotNull PsiElement element, @Nullable PsiElement context){
+		return element instanceof RuleSpecNode;
+	}
+}

src/main/resources/META-INF/plugin.xml

@@ -168,5 +168,6 @@ For really big files and slow grammars, there is an appreciable delay when displ
                            displayName="ANTLR v4 default project settings"
                            instance="org.antlr.intellij.plugin.configdialogs.ANTLRv4ProjectSettings"/>
       <projectService serviceImplementation="org.antlr.intellij.plugin.configdialogs.ANTLRv4GrammarPropertiesComponent"/>
+      <lang.refactoringSupport language="ANTLRv4" implementationClass="org.antlr.intellij.plugin.refactor.ANTLRv4RefactoringSupport"/>
   </extensions>
 </idea-plugin>