Add multiple mods. Closes #287

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

@@ -140,15 +140,33 @@ public final class ModController {
         FileChooser chooser = new FileChooser();
         chooser.setTitle(Main.i18n("mods.choose_mod"));
         chooser.getExtensionFilters().setAll(new FileChooser.ExtensionFilter(Main.i18n("extension.mod"), "*.jar", "*.zip", "*.litemod"));
-        File res = chooser.showOpenDialog(Controllers.getStage());
+        List<File> res = chooser.showOpenMultipleDialog(Controllers.getStage());
+
+        // It's guaranteed that succeeded and failed are thread safe here.
+        List<String> succeeded = new LinkedList<>();
+        List<String> failed = new LinkedList<>();
         if (res == null) return;
-        Task.of(() -> modManager.addMod(versionId, res))
-                .finalized(Schedulers.javafx(), (variables, isDependentsSucceeded) -> {
-                    if (isDependentsSucceeded)
-                        loadMods(modManager, versionId);
-                    else
-                        Controllers.dialog("mods.failed");
-                }).start();
+        Task.of(variables -> {
+            for (File file : res) {
+                try {
+                    modManager.addMod(versionId, file);
+                    succeeded.add(file.getName());
+                } catch (Exception e) {
+                    Logging.LOG.log(Level.WARNING, "Unable to add mod " + file, e);
+                    failed.add(file.getName());
+
+                    // Actually addMod will not throw exceptions because FileChooser has already filtered files.
+                }
+            }
+        }).with(Task.of(Schedulers.javafx(), variables -> {
+            List<String> prompt = new LinkedList<>();
+            if (!succeeded.isEmpty())
+                prompt.add(Main.i18n("mods.add.success", String.join(", ", succeeded)));
+            if (!failed.isEmpty())
+                prompt.add(Main.i18n("mods.add.failed", String.join(", ", failed)));
+            Controllers.dialog(String.join("\n",  prompt), Main.i18n("mods.add"));
+            loadMods(modManager, versionId);
+        })).start();
     }
 
     public void setParentTab(JFXTabPane parentTab) {

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

@@ -294,9 +294,10 @@ modpack.wizard.step.initialization.warning=Before making modpack, you should ens
 
 mods=Mods
 mods.add=Add
+mods.add.failed=Failed to add mods %s.
+mods.add.success=Successfully added mods %s.
 mods.choose_mod=Choose your mods
 mods.default_information=Please ensure that you have installed Forge or LiteLoader before installing mods!\nYou can drop your mod files from explorer/finder, and delete mods by the delete button.\nDisable a mod by leaving the check box unchecked; Choose an item to get the information.
-mods.failed=Unable to add your mod
 mods.remove=Remove
 
 operation.confirm_stop=Terminate the operations?

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

@@ -293,10 +293,11 @@ modpack.wizard.step.initialization.save=选择要导出到的游戏整合包位
 modpack.wizard.step.initialization.warning=在制作整合包前，请您确认您选择的版本可以正常启动，\n并保证您的Minecraft是正式版而非快照版，\n而且不应当将不允许非官方途径传播的Mod、材质包等纳入整合包。\n整合包会保存您目前的下载源设置
 
 mods=模组管理
-mods.add=添加
+mods.add=添加模组
+mods.add.failed=添加模组%s失败。
+mods.add.success=成功添加模组%s。
 mods.choose_mod=选择模组
 mods.default_information=安装Mod前你需要确保已安装Forge或LiteLoader!\n您可以从资源管理器拖动mod文件到列表中来添加mod，同时使用删除键可快速删除选中mod\n点掉mod前面的勾可禁用mod，不会加载；选择mod可以获取mod信息
-mods.failed=添加失败
 mods.remove=删除
 
 operation.confirm_stop=真的要终止操作吗？