some optimizations

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

@@ -54,10 +54,8 @@ public class LineEnd extends EditorLinePainter {
                 @NotNull SelectionModel select = editor.getSelectionModel();
                 @Nullable VisualPosition start = select.getSelectionStartPosition();
                 int lineNum = lineNumber + 1;
-                if (start != null) {
-                    if (lineNum < start.getLine()) {
-                        return null;
-                    }
+                if (start != null && lineNum < start.getLine()) {
+                    return null;
                 }
                 @Nullable VisualPosition end = select.getSelectionEndPosition();
                 if (end != null && lineNum > end.getLine()) {

src/main/java/io/github/linwancen/plugin/show/ext/conf/ReloadExtDocAction.java

@@ -1,8 +1,6 @@
 package io.github.linwancen.plugin.show.ext.conf;
 
-import com.intellij.ide.projectView.ProjectView;
 import com.intellij.openapi.actionSystem.AnActionEvent;
-import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.project.DumbAwareAction;
 import com.intellij.openapi.project.Project;
 import io.github.linwancen.plugin.show.settings.ShowBundle;

src/main/java/io/github/linwancen/plugin/show/ext/conf/ResetExtDocAction.java

@@ -32,6 +32,8 @@ public class ResetExtDocAction extends AnAction {
             if (project == null) {
                 return;
             }
+            ApplicationManager.getApplication().invokeLater(() ->
+                    ProjectView.getInstance(project).refresh());
         } catch (Throwable t) {
             LOG.info("ConfFileChangeListener catch Throwable but log to record.", t);
         }

src/main/java/io/github/linwancen/plugin/show/lang/base/DocFilter.java

@@ -2,7 +2,6 @@ package io.github.linwancen.plugin.show.lang.base;
 
 import io.github.linwancen.plugin.show.bean.SettingsInfo;
 import io.github.linwancen.plugin.show.settings.AbstractSettingsState;
-import io.github.linwancen.plugin.show.settings.AppSettingsState;
 import io.github.linwancen.plugin.show.settings.GlobalSettingsState;
 import io.github.linwancen.plugin.show.settings.ProjectSettingsState;
 import org.jetbrains.annotations.NotNull;

src/main/java/io/github/linwancen/plugin/show/settings/GlobalSettingsComponent.java

@@ -27,7 +27,7 @@ public class GlobalSettingsComponent extends AbstractSettingsComponent {
 
     @NotNull
     public JComponent getPreferredFocusedComponent() {
-        return myMainPanel;
+        return lineEndCount;
     }
 
 }

src/main/java/io/github/linwancen/plugin/show/settings/PatternMapUtils.java

@@ -1,19 +1,16 @@
 package io.github.linwancen.plugin.show.settings;
 
 import org.jetbrains.annotations.NotNull;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.LinkedHashMap;
 import java.util.Map;
-import java.util.function.Consumer;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 public class PatternMapUtils {
-    private static final Logger LOG = LoggerFactory.getLogger(PatternMapUtils.class);
+    private PatternMapUtils() {}
 
     public static final Pattern LINE_PATTERN = Pattern.compile("[\\r\\n]++");
     public static final Pattern SPLIT_PATTERN = Pattern.compile("\\|\\|");
@@ -29,7 +26,9 @@ public class PatternMapUtils {
                 for (int i = 1; i < split.length; i++) {
                     try {
                         patterns.add(Pattern.compile(split[i]));
-                    } catch (Exception ignore) {}
+                    } catch (Exception ignore) {
+                        // ignroe
+                    }
                 }
                 map.put(split[0], patterns.toArray(new Pattern[0]));
             }

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

@@ -11,6 +11,7 @@ import java.util.Map;
 import java.util.regex.Pattern;
 
 class DirDoc {
+    private DirDoc() {}
 
     @Nullable
     static String dirDoc(@NotNull PsiDirectoryNode node, @NotNull AbstractSettingsState settings) {

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

@@ -11,6 +11,7 @@ import java.util.Map;
 import java.util.regex.Pattern;
 
 class FileDoc {
+    private FileDoc() {}
 
     @Nullable
     static String fileDoc(@NotNull PsiFileNode node, @NotNull AbstractSettingsState settings) {

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

@@ -9,6 +9,7 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 class FilePatternsDoc {
+    private FilePatternsDoc() {}
 
     @Nullable
     static String filePatternsDoc(@NotNull PsiFile psiFile, @NotNull Pattern[] patterns) {

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

@@ -12,6 +12,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 public class RelFileDoc {
+    private RelFileDoc() {}
 
     @Nullable
     public static String relFileDoc(ProjectViewNode<?> node, @NotNull SettingsInfo settingsInfo) {