extension point for enabling jvm debugging for specific files

java/debugger/impl/src/com/intellij/debugger/actions/RunToCursorActionHandler.java

@@ -64,7 +64,7 @@ public class RunToCursorActionHandler extends DebuggerActionHandler {
 
     final VirtualFile virtualFile = file.getVirtualFile();
     FileType fileType = virtualFile != null ? fileTypeManager.getFileTypeByFile(virtualFile) : null;
-    if (DebuggerUtils.supportsJVMDebugging(fileType)) {
+    if (DebuggerUtils.supportsJVMDebugging(fileType) || DebuggerUtils.supportsJVMDebugging(file)) {
       DebuggerSession debuggerSession = DebuggerManagerEx.getInstanceEx(project).getContext().getDebuggerSession();
       return debuggerSession != null && debuggerSession.isPaused();
     }

java/debugger/impl/src/com/intellij/debugger/actions/ToggleBreakpointEnabledAction.java

@@ -77,7 +77,7 @@ public class ToggleBreakpointEnabledAction extends AnAction {
     FileTypeManager fileTypeManager = FileTypeManager.getInstance();
     final VirtualFile virtualFile = file.getVirtualFile();
     FileType fileType = virtualFile != null ? fileTypeManager.getFileTypeByFile(virtualFile) : null;
-    if (DebuggerUtils.supportsJVMDebugging(fileType)) {
+    if (DebuggerUtils.supportsJVMDebugging(fileType) || DebuggerUtils.supportsJVMDebugging(file)) {
       Breakpoint breakpoint = findBreakpoint(project);
       if (breakpoint == null) {
         presentation.setEnabled(false);

java/debugger/impl/src/com/intellij/debugger/actions/ToggleLineBreakpointActionHandler.java

@@ -32,6 +32,7 @@ import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.PsiDocumentManager;
 import com.intellij.psi.PsiFile;
+import com.intellij.psi.PsiManager;
 import com.intellij.xdebugger.impl.actions.DebuggerActionHandler;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -46,7 +47,8 @@ public class ToggleLineBreakpointActionHandler extends DebuggerActionHandler {
       int line = document.getLineNumber(offset);
 
       VirtualFile file = FileDocumentManager.getInstance().getFile(document);
-      if (DebuggerUtils.supportsJVMDebugging(file.getFileType())) {
+      PsiFile psiFile = PsiManager.getInstance(project).findFile(file);
+      if (DebuggerUtils.supportsJVMDebugging(file.getFileType()) || DebuggerUtils.supportsJVMDebugging(psiFile)) {
         final BreakpointManager breakpointManager = DebuggerManagerEx.getInstanceEx(project).getBreakpointManager();
         return breakpointManager.findBreakpoint(document, offset, LineBreakpoint.CATEGORY) != null ||
                    LineBreakpoint.canAddLineBreakpoint(project, document, line);

java/debugger/impl/src/com/intellij/debugger/ui/breakpoints/BreakpointManager.java

@@ -186,7 +186,7 @@ public class BreakpointManager implements JDOMExternalizable {
         }
         final FileType fileType = psiFile.getFileType();
         boolean isInsideCompiledClass = StdFileTypes.CLASS.equals(fileType);
-        if (!isInsideCompiledClass && !DebuggerUtils.supportsJVMDebugging(fileType)) {
+        if (!isInsideCompiledClass && !(DebuggerUtils.supportsJVMDebugging(fileType) || DebuggerUtils.supportsJVMDebugging(psiFile))) {
           return null;
         }
         PsiDocumentManager.getInstance(myProject).commitDocument(document);

java/debugger/openapi/src/com/intellij/debugger/engine/DebuggerUtils.java

@@ -27,6 +27,7 @@ import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.ApplicationComponent;
 import com.intellij.openapi.components.ServiceManager;
 import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.extensions.Extensions;
 import com.intellij.openapi.fileTypes.FileType;
 import com.intellij.openapi.fileTypes.LanguageFileType;
 import com.intellij.openapi.project.Project;
@@ -454,4 +455,14 @@ public abstract class DebuggerUtils  implements ApplicationComponent {
   public static boolean supportsJVMDebugging(FileType type) {
     return type instanceof LanguageFileType && ((LanguageFileType)type).isJVMDebuggingSupported();
   }
+
+  public static boolean supportsJVMDebugging(PsiFile file) {
+    final JVMDebugProvider[] providers = Extensions.getExtensions(JVMDebugProvider.EP_NAME);
+    for (JVMDebugProvider provider : providers) {
+      if (provider.supportsJVMDebugging(file)) {
+        return true;
+      }
+    }
+    return false;
+  }
 }

java/debugger/openapi/src/com/intellij/debugger/engine/JVMDebugProvider.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2000-2010 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.debugger.engine;
+
+import com.intellij.openapi.extensions.ExtensionPointName;
+import com.intellij.psi.PsiFile;
+
+/**
+ * @author Dennis.Ushakov
+ */
+public interface JVMDebugProvider {
+  ExtensionPointName<JVMDebugProvider> EP_NAME = ExtensionPointName.create("com.intellij.debugger.jvmDebugProvider");
+
+  boolean supportsJVMDebugging(PsiFile file);
+}

resources/src/META-INF/IdeaPlugin.xml

@@ -79,6 +79,9 @@
     <extensionPoint name="debugger.breakpointFactory"
                     interface="com.intellij.debugger.ui.breakpoints.BreakpointFactory"/>
 
+    <extensionPoint name="debugger.jvmDebugProvider"
+                    interface="com.intellij.debugger.engine.JVMDebugProvider"/>
+
     <extensionPoint name="OrderRootTypeUI"
                     beanClass="com.intellij.openapi.extensions.KeyedFactoryEPBean"/>