refactor(agent): 重命名图片选项为加号选项并改进展开逻辑

重构图片选择选项为加号选项，使其功能更通用。改进展开逻辑，添加键盘关闭检测机制和待展开状态标记，提升用户体验。

lib/modules/agent/controllers/agent_controller.dart

@@ -75,8 +75,8 @@ class AgentController extends GetxController {
   final isFullScreenEditMode = false.obs; // 是否处于全屏编辑模式
   final shouldShowExpandButton = false.obs; // 是否显示展开按钮
 
-  // 图片选择选项展开状态
+  // "+"号选项展开状态
-  final isImageOptionsExpanded = false.obs; // 是否展开图片选择选项
+  final isPlusOptionsExpanded = false.obs; // 是否展开"+"号选项
 
   // 键盘状态
   final isKeyboardVisible = false.obs; // 键盘是否可见
@@ -904,39 +904,65 @@ class AgentController extends GetxController {
     isImageInputActive.value = false;
   }
 
-  // 切换图片选项展开状态
+  // 切换'+'选项展开状态
-  void toggleImageOptions() {
+  void togglePlusOptions() {
-    if (isImageOptionsExpanded.value) {
+    if (isPlusOptionsExpanded.value) {
       // 如果当前已展开，则收缩
-      collapseImageOptions();
+      collapsePlusOptions();
+      _pendingPlusOptionsExpansion = false; // 取消待展开状态
     } else {
       // 如果当前未展开，则展开并关闭键盘
       if (isKeyboardVisible.value) {
+        // 设置待展开标记
+        _pendingPlusOptionsExpansion = true;
         hideKeyboard();
-        // 延迟展开选项，等待键盘完全关闭
+        // 使用双重机制：轮询检测 + 键盘状态监听
-        Future.delayed(const Duration(milliseconds: 200), () {
+        _waitForKeyboardToClose();
-          // 再次检查键盘状态，确保键盘已关闭
-          if (!isKeyboardVisible.value) {
-            isImageOptionsExpanded.value = true;
-          } else {
-            // 如果键盘还没关闭，再等一会儿
-            Future.delayed(const Duration(milliseconds: 100), () {
-              if (!isKeyboardVisible.value) {
-                isImageOptionsExpanded.value = true;
-              }
-            });
-          }
-        });
       } else {
         // 键盘未显示，直接展开
-        isImageOptionsExpanded.value = true;
+        isPlusOptionsExpanded.value = true;
       }
     }
   }
 
-  // 收缩图片选项
+  // 等待键盘关闭的轮询机制
-  void collapseImageOptions() {
+  void _waitForKeyboardToClose() {
-    isImageOptionsExpanded.value = false;
+    int attempts = 0;
+    const maxAttempts = 30; // 最多尝试30次，总计3秒
+    const checkInterval = Duration(milliseconds: 100); // 每100ms检查一次
+
+    Timer.periodic(checkInterval, (timer) {
+      attempts++;
+
+      // 检查是否还需要展开（用户可能已经取消了）
+      if (!_pendingPlusOptionsExpansion) {
+        timer.cancel();
+        return;
+      }
+
+      if (!isKeyboardVisible.value) {
+        // 键盘已关闭，展开选项
+        timer.cancel();
+        _pendingPlusOptionsExpansion = false;
+        // 添加小延迟确保UI稳定
+        Future.delayed(const Duration(milliseconds: 50), () {
+          if (!isKeyboardVisible.value) { // 再次确认键盘状态
+            isPlusOptionsExpanded.value = true;
+          }
+        });
+      } else if (attempts >= maxAttempts) {
+        // 超时，强制展开（可能键盘检测有问题）
+        timer.cancel();
+        _pendingPlusOptionsExpansion = false;
+        Logger.d('AgentController', '键盘关闭检测超时，强制展开选项');
+        isPlusOptionsExpanded.value = true;
+      }
+    });
+  }
+
+  // 收缩'+'选项
+  void collapsePlusOptions() {
+    isPlusOptionsExpanded.value = false;
   }
 
   // 更新键盘可见状态
@@ -944,13 +970,26 @@ class AgentController extends GetxController {
     final wasVisible = isKeyboardVisible.value;
     isKeyboardVisible.value = isVisible;
 
-    // 只有当键盘从隐藏变为显示时，才收缩图片选项
+    // 只有当键盘从隐藏变为显示时，才收缩'+'选项
     // 避免键盘关闭时误触发收缩逻辑
-    if (!wasVisible && isVisible && isImageOptionsExpanded.value) {
+    if (!wasVisible && isVisible && isPlusOptionsExpanded.value) {
-      collapseImageOptions();
+      collapsePlusOptions();
+    }
+
+    // 如果键盘关闭了，并且有待展开的选项，则展开
+    if (wasVisible && !isVisible && _pendingPlusOptionsExpansion) {
+      _pendingPlusOptionsExpansion = false;
+      Future.delayed(const Duration(milliseconds: 100), () {
+        if (!isKeyboardVisible.value) {
+          isPlusOptionsExpanded.value = true;
+        }
+      });
     }
   }
 
+  // 标记是否有待展开的'+'选项
+  bool _pendingPlusOptionsExpansion = false;
+
   // 隐藏键盘
   void hideKeyboard() {
     FocusManager.instance.primaryFocus?.unfocus();

lib/modules/agent/views/agent_view.dart

@@ -407,12 +407,12 @@ class _AgentViewState extends State<AgentView> with WidgetsBindingObserver {
                                             textInputAction: TextInputAction
                                                 .newline, // 支持回车换行
                                             onTap: () {
-                                              // 当点击输入框时，如果图片选项已展开，则收缩
+                                              // 当点击输入框时，如果'+'选项已展开，则收缩
                                               if (controller
-                                                  .isImageOptionsExpanded
+                                                  .isPlusOptionsExpanded
                                                   .value) {
                                                 controller
-                                                    .collapseImageOptions();
+                                                    .collapsePlusOptions();
                                               }
                                             },
                                             style: TextStyle(
@@ -607,10 +607,10 @@ class _AgentViewState extends State<AgentView> with WidgetsBindingObserver {
                               // 显示'+'选择按钮
                               return Obx(() {
                                 final isExpanded =
-                                    controller.isImageOptionsExpanded.value;
+                                    controller.isPlusOptionsExpanded.value;
                                 return GestureDetector(
                                   onTap: () {
-                                    controller.toggleImageOptions();
+                                    controller.togglePlusOptions();
                                   },
                                   child: Container(
                                     width: 44,
@@ -640,7 +640,7 @@ class _AgentViewState extends State<AgentView> with WidgetsBindingObserver {
                     // 展开的'+'选择选项
                     Obx(() {
                       final isExpanded =
-                          controller.isImageOptionsExpanded.value;
+                          controller.isPlusOptionsExpanded.value;
                       return AnimatedContainer(
                         duration: const Duration(milliseconds: 300),
                         curve: Curves.easeInOut,
@@ -658,7 +658,7 @@ class _AgentViewState extends State<AgentView> with WidgetsBindingObserver {
                                       icon: Icons.camera_alt,
                                       label: '拍照',
                                       onTap: () async {
-                                        //controller.collapseImageOptions();
+                                        //controller.collapsePlusOptions();
                                         await controller.takePhoto();
                                       },
                                       isDarkMode: isDarkMode,
@@ -669,7 +669,7 @@ class _AgentViewState extends State<AgentView> with WidgetsBindingObserver {
                                       icon: Icons.photo_library,
                                       label: '相册',
                                       onTap: () async {
-                                        //controller.collapseImageOptions();
+                                        //controller.collapsePlusOptions();
                                         await controller.pickImage();
                                       },
                                       isDarkMode: isDarkMode,
@@ -680,7 +680,7 @@ class _AgentViewState extends State<AgentView> with WidgetsBindingObserver {
                                     //   icon: Icons.folder,
                                     //   label: '文件',
                                     //   onTap: () {
-                                    //     //controller.collapseImageOptions();
+                                    //     //controller.collapsePlusOptions();
                                     //     // TODO: 实现文件选择功能
                                     //   },
                                     //   isDarkMode: isDarkMode,
@@ -691,7 +691,7 @@ class _AgentViewState extends State<AgentView> with WidgetsBindingObserver {
                                       icon: Icons.phone,
                                       label: '打电话',
                                       onTap: () {
-                                        //controller.collapseImageOptions();
+                                        //controller.collapsePlusOptions();
                                         // TODO: 实现通话功能
                                       },
                                       isDarkMode: isDarkMode,