Add prompt warning user that no game installed

HMCL/src/main/java/org/jackhuang/hmcl/ui/LeftPaneController.java

@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.ui;
 
 import com.jfoenix.concurrency.JFXUtilities;
+import javafx.application.Platform;
 import javafx.beans.binding.When;
 import javafx.scene.layout.Region;
 import javafx.scene.paint.Color;
@@ -92,7 +93,7 @@ public final class LeftPaneController extends AdvancedListBox {
     // ==== Accounts ====
     public void checkAccount() {
         if (Accounts.getAccounts().isEmpty())
-            addNewAccount();
+            Platform.runLater(this::addNewAccount);
     }
 
     private void addNewAccount() {

HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java

@@ -281,6 +281,8 @@ public class DecoratorController {
             dialogPane = new StackContainerPane();
 
             dialog.setContent(dialogPane);
+            if (decorator.getDrawerWrapper() == null)
+                throw new IllegalStateException("Decorator has not been initialized");
             dialog.setDialogContainer(decorator.getDrawerWrapper());
             dialog.setOverlayClose(false);
             dialog.show();

HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/GameAdvancedListItem.java

@@ -29,6 +29,8 @@ import org.jackhuang.hmcl.ui.construct.AdvancedListItem;
 
 import java.io.File;
 
+import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
+
 public class GameAdvancedListItem extends AdvancedListItem {
     private final WeakListenerHelper helper = new WeakListenerHelper();
 
@@ -68,7 +70,13 @@ public class GameAdvancedListItem extends AdvancedListItem {
             else
                 imageProperty().set(new Image("/assets/img/grass.png"));
 
+            if (version != null) {
                 titleProperty().set(version);
+                subtitleProperty().set(null);
+            } else {
+                titleProperty().set(i18n("version.empty"));
+                subtitleProperty().set(i18n("version.empty.add"));
+            }
         });
     }
 }

HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/Versions.java

@@ -128,6 +128,8 @@ public class Versions {
     public static void launch(Profile profile, String id) {
         if (Accounts.getSelectedAccount() == null)
             Controllers.getLeftPaneController().checkAccount();
+        else if (id == null)
+            Controllers.dialog(i18n("version.empty.launch"));
         else
             LauncherHelper.INSTANCE.launch(profile, Accounts.getSelectedAccount(), id, null);
     }

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -331,6 +331,9 @@ update.tooltip=Update
 
 version=Games
 version.cannot_read=Unable to gather the game version. Cannot continue auto-installing.
+version.empty=No game
+version.empty.add=Click btn right to install game
+version.empty.launch=No game to launch, please install new game via game list page.
 version.forbidden_name=Forbidden name, do not use this.
 version.game.old=Old
 version.game.release=Release

HMCL/src/main/resources/assets/lang/I18N_zh.properties

@@ -331,6 +331,9 @@ update.tooltip=更新
 
 version=遊戲
 version.cannot_read=讀取遊戲版本失敗，無法進行自動安裝
+version.empty=無遊戲版本
+version.empty.add=點擊右側按鈕安裝
+version.empty.launch=沒有可啟動的遊戲，你可以點擊左側遊戲欄內的設置按鈕進入遊戲列表安裝遊戲
 version.forbidden_name=此版本名稱不受支援，請換一個名字
 version.game.old=老舊版本
 version.game.release=穩定版本

HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties

@@ -331,6 +331,9 @@ update.tooltip=更新
 
 version=游戏
 version.cannot_read=读取游戏版本失败，无法进行自动安装
+version.empty=没有游戏版本
+version.empty.add=点击右侧按钮安装
+version.empty.launch=没有可启动的游戏，你可以点击左侧游戏栏内的设置按钮进入游戏列表安装游戏
 version.forbidden_name=此版本名称不受支持，请换一个名字
 version.game.old=远古版
 version.game.release=稳定版