some optimizations

src/main/java/io/github/linwancen/plugin/show/Tree.java

@@ -38,7 +38,7 @@ public class Tree implements ProjectViewNodeDecorator {
         }
     }
 
-    private void decorateImpl(@NotNull ProjectViewNode node, @NotNull PresentationData data) {
+    private void decorateImpl(@NotNull ProjectViewNode<?> node, @NotNull PresentationData data) {
         if (!AppSettingsState.getInstance().showTreeComment) {
             return;
         }
@@ -52,17 +52,21 @@ public class Tree implements ProjectViewNodeDecorator {
         DumbService.getInstance(project).runReadActionInSmartMode(() ->
                 ApplicationManager.getApplication().runReadAction(() -> {
                     @Nullable String doc = treeDoc(node, project);
-                    if (doc == null) {
+                    addText(data, doc);
-                        return;
-                    }
-                    @NotNull List<ColoredFragment> coloredText = data.getColoredText();
-                    if (coloredText.isEmpty()) {
-                        data.addText(data.getPresentableText(), SimpleTextAttributes.REGULAR_ATTRIBUTES);
-                    }
-                    data.addText(" " + doc, SimpleTextAttributes.GRAY_ATTRIBUTES);
                 }));
     }
 
+    static void addText(@NotNull PresentationData data, @Nullable String text) {
+        if (text == null) {
+            return;
+        }
+        @NotNull List<ColoredFragment> coloredText = data.getColoredText();
+        if (coloredText.isEmpty()) {
+            data.addText(data.getPresentableText(), SimpleTextAttributes.REGULAR_ATTRIBUTES);
+        }
+        data.addText(" " + text, SimpleTextAttributes.GRAY_ATTRIBUTES);
+    }
+
     @Nullable
     private String treeDoc(@NotNull ProjectViewNode<?> node, @NotNull Project project) {
         @Nullable String doc = TreeExt.doc(node);

src/main/java/io/github/linwancen/plugin/show/tree/DirDoc.java

@@ -13,13 +13,12 @@ import java.util.regex.Pattern;
 class DirDoc {
 
     @Nullable
-    static String dirDoc(PsiDirectoryNode node, @NotNull AbstractSettingsState settings) {
+    static String dirDoc(@NotNull PsiDirectoryNode node, @NotNull AbstractSettingsState settings) {
         if (!settings.dirDocEffect) {
             return null;
         }
         @NotNull Map<String, Pattern[]> patternMap = settings.dirDoc;
-        @NotNull PsiDirectoryNode psiDirectoryNode = node;
+        @Nullable PsiDirectory psiDirectory = node.getValue();
-        @Nullable PsiDirectory psiDirectory = psiDirectoryNode.getValue();
         if (psiDirectory == null) {
             return null;
         }

src/main/java/io/github/linwancen/plugin/show/tree/FileDoc.java

@@ -13,13 +13,12 @@ import java.util.regex.Pattern;
 class FileDoc {
 
     @Nullable
-    static String fileDoc(PsiFileNode node, @NotNull AbstractSettingsState settings) {
+    static String fileDoc(@NotNull PsiFileNode node, @NotNull AbstractSettingsState settings) {
         if (!settings.fileDocEffect) {
             return null;
         }
         @NotNull Map<String, Pattern[]> patternMap = settings.fileDoc;
-        @NotNull PsiFileNode psiFileNode = node;
+        @Nullable PsiFile psiFile = node.getValue();
-        @Nullable PsiFile psiFile = psiFileNode.getValue();
         if (psiFile == null) {
             return null;
         }

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

@@ -110,11 +110,11 @@ Show doc comment at the Project view Tree, line End, json, other
        on how to target different products -->
   <depends>com.intellij.modules.platform</depends>
   <depends optional="true" config-file="java.xml">com.intellij.modules.java</depends>
+  <depends optional="true" config-file="kotlin.xml">org.jetbrains.kotlin</depends>
   <depends optional="true" config-file="sql.xml">com.intellij.database</depends>
   <depends optional="true" config-file="js.xml">JavaScript</depends>
   <depends optional="true" config-file="python.xml">com.intellij.modules.python</depends>
   <depends optional="true" config-file="go.xml">org.jetbrains.plugins.go</depends>
-  <depends optional="true" config-file="kotlin.xml">org.jetbrains.kotlin</depends>
   <!--suppress PluginXmlValidity, MybatisMapperXmlInspection -->
   <!--<depends optional="true" config-file="cs.xml">com.intellij.modules.rider</depends>-->
 

src/main/resources/messages/ShowCommentBundle.properties

@@ -2,11 +2,11 @@
 reset.default=Reset default
 
 show=Show
+show.tree.comment=Show tree comment
+compact=Support compact
+
 show.line.end.comment=Show line end comment
 only.select.line=Only Select Line
-show.tree.comment=Show tree comment
-
-compact=support compact
 
 skip.anno=skip @
 skip.blank=skip Blank
@@ -29,7 +29,7 @@ comment.include.regexp=comment include Regexp:
 comment.exclude.regexp=comment exclude Regexp:
 get.doc.regexp=get doc Regexp, last () when had, default is first sentence .+?(?:[\u3002\r\n]|. ) :
 dir.doc.regexp=dir doc, fileName||Regexp1||Regexp2\\n:
-file.doc.regexp=file doc, fileName||Regexp1||Regexp2\\n:
+file.doc.regexp=file doc, fileExtension||Regexp1||Regexp2\\n:
 
 global.settings.effective=Global Settings Effective
 project.settings.effective=Project Settings Effective

src/main/resources/messages/ShowCommentBundle_zh.properties

@@ -3,11 +3,11 @@ reset.default=\u6062\u590D\u9ED8\u8BA4
 
 show=\u663E\u793A
 show.tree.comment=\u663E\u793A\u6587\u4EF6\u6811\u6CE8\u91CA
-only.select.line=\u53EA\u663E\u793A\u9009\u62E9\u884C
-show.line.end.comment=\u663E\u793A\u884C\u672B\u6CE8\u91CA
-
 compact=\u652F\u6301\u538B\u7F29\u7A7A\u7684\u4E2D\u95F4\u5305
 
+show.line.end.comment=\u663E\u793A\u884C\u672B\u6CE8\u91CA
+only.select.line=\u53EA\u663E\u793A\u9009\u62E9\u884C
+
 line.tags=\u884C\u6CE8\u91CA @ \u6807\u7B7E | \u5206\u9694
 tree.tags=\u6811\u6CE8\u91CA @ \u6807\u7B7E | \u5206\u9694
 
@@ -29,7 +29,7 @@ comment.include.regexp=\u6CE8\u91CA \u5305\u542B \u6B63\u5219\uFF1A
 comment.exclude.regexp=\u6CE8\u91CA \u6392\u9664 \u6B63\u5219\uFF1A
 get.doc.regexp=\u6CE8\u91CA\u63D0\u53D6\u6B63\u5219\uFF0C\u82E5\u6709 () \u5219\u53D6\u6700\u540E\u4E00\u4E2A\uFF0C\u9ED8\u8BA4\u6B63\u5219\u662F\u7B2C\u4E00\u53E5 .+?(?:[\u3002\r\n]|. ) :
 dir.doc.regexp=\u76EE\u5F55\u6CE8\u91CA, \u6587\u4EF6\u540D||\u6B63\u52191||\u6B63\u52192\\n:
-file.doc.regexp=\u6587\u4EF6\u6CE8\u91CA, \u6587\u4EF6\u540D||\u6B63\u52191||\u6B63\u52192\\n:
+file.doc.regexp=\u6587\u4EF6\u6CE8\u91CA, \u6587\u4EF6\u62D3\u5C55\u540D||\u6B63\u52191||\u6B63\u52192\\n:
 
 global.settings.effective=\u5168\u5C40\u914D\u7F6E\u751F\u6548
 project.settings.effective=\u9879\u76EE\u914D\u7F6E\u751F\u6548