IDEA-151671 vcs: scroll annotated content to relevant place if called from FileHistory toolwindow

platform/vcs-impl/src/com/intellij/openapi/vcs/actions/AnnotateRevisionAction.java

@@ -1,7 +1,9 @@
 package com.intellij.openapi.vcs.actions;
 
 import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.CommonDataKeys;
 import com.intellij.openapi.actionSystem.PlatformDataKeys;
+import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.fileTypes.FileType;
 import com.intellij.openapi.fileTypes.PlainTextFileType;
 import com.intellij.openapi.project.DumbAware;
@@ -94,6 +96,12 @@ abstract class AnnotateRevisionAction extends AnnotateRevisionActionBase impleme
     return revisions.get(currentLine);
   }
 
+  @Nullable
+  @Override
+  protected Editor getEditor(@NotNull AnActionEvent e) {
+    return e.getData(CommonDataKeys.EDITOR);
+  }
+
   @Override
   public void consume(Integer integer) {
     currentLine = integer;

platform/vcs-impl/src/com/intellij/openapi/vcs/actions/AnnotateRevisionActionBase.java

@@ -37,6 +37,11 @@ public abstract class AnnotateRevisionActionBase extends AnAction {
   @Nullable
   protected abstract VcsFileRevision getFileRevision(@NotNull AnActionEvent e);
 
+  @Nullable
+  protected Editor getEditor(@NotNull AnActionEvent e) {
+    return null;
+  }
+
   public void update(@NotNull AnActionEvent e) {
     e.getPresentation().setEnabled(isEnabled(e));
   }
@@ -70,7 +75,7 @@ public abstract class AnnotateRevisionActionBase extends AnAction {
     assert file != null;
     assert fileRevision != null;
 
-    final Editor editor = e.getData(CommonDataKeys.EDITOR);
+    final Editor editor = getEditor(e);
     final CharSequence oldContent = editor == null ? null : editor.getDocument().getImmutableCharSequence();
     final int oldLine = editor == null ? 0 : editor.getCaretModel().getLogicalPosition().line;
 

platform/vcs-impl/src/com/intellij/openapi/vcs/history/FileHistoryPanelImpl.java

@@ -27,8 +27,8 @@ import com.intellij.openapi.command.CommandProcessor;
 import com.intellij.openapi.command.WriteCommandAction;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.editor.Document;
-import com.intellij.openapi.fileEditor.FileDocumentManager;
-import com.intellij.openapi.fileEditor.OpenFileDescriptor;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.fileEditor.*;
 import com.intellij.openapi.progress.ProcessCanceledException;
 import com.intellij.openapi.progress.ProgressIndicator;
 import com.intellij.openapi.progress.ProgressManager;
@@ -1064,6 +1064,25 @@ public class FileHistoryPanelImpl extends PanelWithActionsAndCloseButton {
       setShortcutSet(ActionManager.getInstance().getAction("Annotate").getShortcutSet());
     }
 
+    @Nullable
+    @Override
+    protected Editor getEditor(@NotNull AnActionEvent e) {
+      VirtualFile virtualFile = getVirtualFile();
+      if (virtualFile == null) return null;
+
+      Editor editor = e.getData(CommonDataKeys.EDITOR);
+      if (editor != null) {
+        VirtualFile editorFile = FileDocumentManager.getInstance().getFile(editor.getDocument());
+        if (Comparing.equal(editorFile, virtualFile)) return editor;
+      }
+
+      FileEditor fileEditor = FileEditorManager.getInstance(myProject).getSelectedEditor(virtualFile);
+      if (fileEditor instanceof TextEditor) {
+        return ((TextEditor)fileEditor).getEditor();
+      }
+      return null;
+    }
+
     @Nullable
     @Override
     protected AbstractVcs getVcs(@NotNull AnActionEvent e) {