feat: 完成新版缓存管理器

src/heurams/__init__.py

@@ -1 +1 @@
-print("Hello from HeurAMS Program :)")
+print("欢迎使用 HeurAMS 及其组件!")

src/heurams/interface/screens/precache.py

@@ -39,9 +39,10 @@ class PrecachingScreen(Screen):
         self.current_file = ""
         self.current_item = ""
         self.progress = 0
-        self.total = 0
+        self.total = len(nucleons)
         self.processed = 0
         self.precache_worker = None
+        self.cancel_flag = 0
         self.desc = desc
         for i in nucleons:
             i: pt.Nucleon
@@ -70,6 +71,10 @@ class PrecachingScreen(Screen):
                     yield Button("取消预缓存", id="cancel_precache", variant="error")
                 yield Button("清空缓存", id="clear_cache", variant="warning")
                 yield Button("返回", id="go_back", variant="default")
+            
+            yield Static("若您离开此界面, 未完成的缓存进程会自动停止.")
+            yield Static("缓存程序支持 \"断点续传\".")
+
         yield Footer()
 
     def on_mount(self):
@@ -116,17 +121,22 @@ class PrecachingScreen(Screen):
     def precache_by_list(self, nucleons: list):
         """依据 Nucleons 列表缓存"""
         for idx, nucleon in enumerate(nucleons):
-            print(f"PROC: {nucleon}")
+            #print(f"PROC: {nucleon}")
             worker = get_current_worker()
             if worker and worker.is_cancelled: # 函数在worker中执行且已被取消
                 return False
             text = nucleon.metadata['formation']['tts_text']
             #self.current_item = text[:30] + "..." if len(text) > 50 else text
-            print(text)
+            #print(text)
             self.processed += 1
+            #print(self.processed)
+            #print(self.total)
             progress = int((self.processed / self.total) * 100) if self.total > 0 else 0
+            #print(progress)
             self.update_status(
-                f"正处理 ({idx + 1}/{len(nucleons)})"
+                f"正处理 ({idx + 1}/{len(nucleons)})",
+                text,
+                progress
             )
             ret = self.precache_by_nucleon(nucleon)
             if not ret:
@@ -136,6 +146,10 @@ class PrecachingScreen(Screen):
                 )
                 import time
                 time.sleep(1)
+            if self.cancel_flag:
+                worker.cancel()
+                self.cancel_flag = 0
+                return False
         return True
 
     def precache_by_nucleons(self):
@@ -197,6 +211,8 @@ class PrecachingScreen(Screen):
             if self.precache_worker:
                 self.precache_worker.cancel()
             self.is_precaching = False
+            self.processed = 0
+            self.progress = 0
             self.update_status("已取消", "预缓存操作被用户取消", 0)
             
         elif event.button.id == "clear_cache":
@@ -208,6 +224,9 @@ class PrecachingScreen(Screen):
                 self.update_status("已清空", "音频缓存已清空", 0)
             except Exception as e:
                 self.update_status("错误", f"清空缓存失败: {e}")
+            self.cancel_flag = 1
+            self.processed = 0
+            self.progress = 0
                 
         elif event.button.id == "go_back":
             self.action_go_back()