Add input dialog

assets/init.js

@@ -1276,5 +1276,20 @@ let UI = {
             function: 'cancelLoading',
             id: id
         })
+    },
+
+    /**
+     * Show an input dialog
+     * @param title {string}
+     * @param validator {(string) => string | null | undefined} - A function that validates the input. If the function returns a string, the dialog will show the error message.
+     * @returns {string | null} - The input value. If the dialog is canceled, return null.
+     */
+    showInputDialog: (title, validator) => {
+        return sendMessage({
+            method: 'UI',
+            function: 'showInputDialog',
+            title: title,
+            validator: validator
+        })
     }
 }

lib/components/js_ui.dart

@@ -34,6 +34,12 @@ mixin class JsUiApi {
         if (id is int) {
           cancelLoading(id);
         }
+      case 'showInputDialog':
+        var title = message['title'];
+        var validator = message['validator'];
+        if (title is! String) return;
+        if (validator != null && validator is! JSInvokable) return;
+        return _showInputDialog(title, validator);
     }
   }
 
@@ -47,8 +53,6 @@ mixin class JsUiApi {
         continue;
       }
       var callback = action['callback'] as JSInvokable;
-      // [message] will be released after the method call, causing the action to be invalid, so we need to duplicate it
-      callback.dup();
       var text = action['text'].toString();
       var style = (action['style'] ?? 'text').toString();
       actions.add(_JSCallbackButton(
@@ -84,15 +88,16 @@ mixin class JsUiApi {
   }
 
   int showLoading(JSInvokable? onCancel) {
-    onCancel?.dup();
     var func = onCancel == null ? null : JSAutoFreeFunction(onCancel);
     var controller = showLoadingDialog(
       App.rootContext,
       barrierDismissible: onCancel != null,
       allowCancel: onCancel != null,
-      onCancel: onCancel == null ? null : () {
-        func?.call([]);
-      },
+      onCancel: onCancel == null
+          ? null
+          : () {
+              func?.call([]);
+            },
     );
     var i = 0;
     while (_loadingDialogControllers.containsKey(i)) {
@@ -106,6 +111,29 @@ mixin class JsUiApi {
     var controller = _loadingDialogControllers.remove(id);
     controller?.close();
   }
+
+  Future<String?> _showInputDialog(String title, JSInvokable? validator) async {
+    String? result;
+    var func = validator == null ? null : JSAutoFreeFunction(validator);
+    await showInputDialog(
+      context: App.rootContext,
+      title: title,
+      onConfirm: (v) {
+        if (func != null) {
+          var res = func.call([v]);
+          if (res != null) {
+            return res.toString();
+          } else {
+            result = v;
+          }
+        } else {
+          result = v;
+        }
+        return null;
+      },
+    );
+    return result;
+  }
 }
 
 class _JSCallbackButton extends StatefulWidget {

lib/foundation/image_provider/reader_image.dart

@@ -63,7 +63,8 @@ class ReaderImageProvider
         })()
       ''');
       if (func is JSInvokable) {
-        var result = func.invoke([imageBytes, cid, eid, page, sourceKey]);
+        var autoFreeFunc = JSAutoFreeFunction(func);
+        var result = autoFreeFunc([imageBytes, cid, eid, page, sourceKey]);
         if (result is Uint8List) {
           imageBytes = result;
         } else if (result is Future) {
@@ -76,9 +77,9 @@ class ReaderImageProvider
           if (image is Uint8List) {
             imageBytes = image;
           } else if (image is Future) {
-            JSInvokable? onCancel;
+            JSAutoFreeFunction? onCancel;
             if (result['onCancel'] is JSInvokable) {
-              onCancel = result['onCancel'];
+              onCancel = JSAutoFreeFunction(result['onCancel']);
             }
             if (onCancel == null) {
               var futureImage = await image;
@@ -96,9 +97,7 @@ class ReaderImageProvider
                   checkStop();
                 }
                 catch(e) {
-                  onCancel.invoke([]);
-                  onCancel.free();
-                  func.free();
+                  onCancel([]);
                   rethrow;
                 }
                 await Future.delayed(Duration(milliseconds: 50));
@@ -107,10 +106,8 @@ class ReaderImageProvider
                 imageBytes = futureImage;
               }
             }
-            onCancel?.free();
           }
         }
-        func.free();
       }
     }
     return imageBytes!;

lib/foundation/js_engine.dart

@@ -677,6 +677,7 @@ class JSAutoFreeFunction {
 
   /// Automatically free the function when it's not used anymore
   JSAutoFreeFunction(this.func) {
+    func.dup();
     finalizer.attach(this, func);
   }
 
@@ -685,6 +686,6 @@ class JSAutoFreeFunction {
   }
 
   static final finalizer = Finalizer<JSInvokable>((func) {
-    func.free();
+    func.destroy();
   });
 }