fix #726

Author: shuzijun

src/main/java/com/shuzijun/leetcode/plugin/editor/QuestionEditorWithPreview.java

@@ -5,6 +5,7 @@
 import com.intellij.openapi.actionSystem.ActionGroup;
 import com.intellij.openapi.actionSystem.ActionManager;
 import com.intellij.openapi.actionSystem.DefaultActionGroup;
+import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.fileEditor.FileEditor;
 import com.intellij.openapi.fileEditor.FileEditorLocation;
 import com.intellij.openapi.fileEditor.TextEditor;
@@ -98,7 +99,11 @@ public TextEditor getTextEditor() {
 
     }
 
-    public FileEditor getPreviewEditor() {
+    public @NotNull FileEditor getPreviewEditor() {
         return myPreview == getTextEditor() ? myEditor : myPreview;
     }
+
+    public @NotNull Editor getEditor() {
+        return getTextEditor().getEditor();
+    }
 }

src/main/java/com/shuzijun/leetcode/plugin/editor/converge/ContentProvider.java

@@ -1,5 +1,6 @@
 package com.shuzijun.leetcode.plugin.editor.converge;
 
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.fileEditor.FileEditor;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.LocalFileSystem;
@@ -24,8 +25,13 @@ public boolean accept(@NotNull Project project, @NotNull VirtualFile file) {
     @Override
     public @NotNull FileEditor createEditor(@NotNull Project project, @NotNull VirtualFile file) {
         LeetcodeEditor leetcodeEditor = ProjectConfig.getInstance(project).getEditor(file.getPath());
-        VirtualFile contentVf = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(new File(leetcodeEditor.getContentPath()));
 
+        VirtualFile contentVf;
+        try {
+            contentVf = ApplicationManager.getApplication().executeOnPooledThread(() -> LocalFileSystem.getInstance().refreshAndFindFileByIoFile(new File(leetcodeEditor.getContentPath()))).get();
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
         return super.createEditor(project, contentVf);
     }
 }

src/main/java/com/shuzijun/leetcode/plugin/utils/FileUtils.java

@@ -225,19 +225,21 @@ public static void openFileEditor(File file, Project project) {
 
 
     public static void openFileEditorAndSaveState(File file, Project project, Question question, BiConsumer<LeetcodeEditor,String> consumer,boolean isOpen) {
-        ApplicationManager.getApplication().invokeLater(() -> {
-            VirtualFile vf = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(file);
-            LeetcodeEditor leetcodeEditor = ProjectConfig.getInstance(project).getDefEditor(URLUtils.getLeetcodeHost()+question.getFrontendQuestionId());
-            leetcodeEditor.setFrontendQuestionId(URLUtils.getLeetcodeHost()+question.getFrontendQuestionId());
-            leetcodeEditor.setTitleSlug(question.getTitleSlug());
-            leetcodeEditor.setHost(URLUtils.getLeetcodeHost());
-            consumer.accept(leetcodeEditor,vf.getPath());
-            ProjectConfig.getInstance(project).addLeetcodeEditor(leetcodeEditor);
-            if(isOpen) {
+        VirtualFile vf = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(file);
+        LeetcodeEditor leetcodeEditor = ProjectConfig.getInstance(project).getDefEditor(URLUtils.getLeetcodeHost()+question.getFrontendQuestionId());
+        leetcodeEditor.setFrontendQuestionId(URLUtils.getLeetcodeHost()+question.getFrontendQuestionId());
+        leetcodeEditor.setTitleSlug(question.getTitleSlug());
+        leetcodeEditor.setHost(URLUtils.getLeetcodeHost());
+        consumer.accept(leetcodeEditor,vf.getPath());
+        ProjectConfig.getInstance(project).addLeetcodeEditor(leetcodeEditor);
+
+        if(isOpen) {
+            ApplicationManager.getApplication().invokeLater(() -> {
                 OpenFileDescriptor descriptor = new OpenFileDescriptor(project, vf);
                 FileEditorManager.getInstance(project).openTextEditor(descriptor, false);
-            }
-        });
+            });
+        }
+
     }
 
     public static void saveEditDocument(VirtualFile file){