Refactor: UI & Feature updates (Calculator, UnitConverter, Privacy, Cleanup)

codes/minipro/calculation/miniprogram/pages/calculator/calculator.ts

@@ -9,6 +9,7 @@ Page({
     isScientific: false,
     showHistory: false,
     showHelp: false,
+    showSettingsMenu: false,
     historyList: [] as Array<{expression: string, result: string}>
   },
 
@@ -26,7 +27,21 @@ Page({
   },
 
   toggleHelp() {
-    this.setData({ showHelp: !this.data.showHelp });
+    this.setData({ 
+      showHelp: !this.data.showHelp,
+      showSettingsMenu: false
+    });
+  },
+
+  toggleSettings() {
+    this.vibrate();
+    this.setData({ showSettingsMenu: !this.data.showSettingsMenu });
+  },
+
+  closeSettings() {
+    if (this.data.showSettingsMenu) {
+      this.setData({ showSettingsMenu: false });
+    }
   },
 
   onLoad() {
@@ -209,7 +224,7 @@ Page({
       this.setData({ 
         operator: nextOperator,
         // 更新历史记录中的符号
-        history: `${firstOperand} ${nextOperator}` 
+        history: `${firstOperand} ${nextOperator}`
       });
       return;
     }
@@ -279,29 +294,52 @@ Page({
   },
 
   toggleHistory() {
-    this.setData({ showHistory: !this.data.showHistory });
+    this.vibrate();
+    this.setData({ 
+        showHistory: !this.data.showHistory,
+        showSettingsMenu: false
+    });
   },
 
   clearHistory() {
-    this.setData({ historyList: [] });
+    this.vibrate();
     wx.removeStorageSync('CALC_HISTORY');
+    this.setData({ historyList: [] });
   },
 
   useHistoryResult(e: any) {
+    this.vibrate();
     const result = e.currentTarget.dataset.result;
     this.setData({
-      displayValue: String(result),
-      showHistory: false,
-      waitingForSecondOperand: true
+      displayValue: result,
+      waitingForSecondOperand: false, // Treat as a fresh input that can be operated on
+      showHistory: false
     });
   },
 
   copyResult() {
+    this.vibrate();
+    const { displayValue } = this.data;
     wx.setClipboardData({
-      data: this.data.displayValue,
+      data: displayValue,
       success: () => {
-        wx.showToast({ title: '已复制', icon: 'success', duration: 1000 });
+        wx.showToast({
+          title: '复制成功',
+          icon: 'success'
+        });
+      },
+      fail: (err) => {
+        console.error('复制失败:', err);
+        // 隐私协议未声明或用户拒绝会导致复制失败 (errno 112)
+        if (err.errno === 112 || (err.errMsg && err.errMsg.indexOf('privacy') > -1)) {
+            wx.showModal({
+                title: '提示',
+                content: '无法自动复制，请长按显示区域手动复制',
+                showCancel: false,
+                confirmText: '知道了'
+            });
+        }
       }
     });
   }
-})
+});