Sync.

src/Tone3000Downloader.hpp

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+/*
+ *   Copyright (c) 2026 Robin E. R. Davies
+ *   All rights reserved.
+
+ *   Permission is hereby granted, free of charge, to any person obtaining a copy
+ *   of this software and associated documentation files (the "Software"), to deal
+ *   in the Software without restriction, including without limitation the rights
+ *   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *   copies of the Software, and to permit persons to whom the Software is
+ *   furnished to do so, subject to the following conditions:
+ 
+ *   The above copyright notice and this permission notice shall be included in all
+ *   copies or substantial portions of the Software.
+ 
+ *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *   SOFTWARE.
+ */
+
+#pragma once 
+
+#include <memory>
+#include <cstdint>
+
+namespace pipedal {
+
+    class Tone3000Downloader {
+    protected:
+        Tone3000Downloader();
+    public:
+        using handle_t = int64_t;
+        static constexpr handle_t INVALID_HANDLE = (handle_t)(int64_t)-1;
+
+
+        virtual ~Tone3000Downloader();
+
+        class DownloadProgress {
+        public:
+        private:
+            handle_t handle_ = INVALID_HANDLE;
+            std::string title_;
+            uint64_t progress_ = 0;
+            uint64_t total_ = 0;
+        };
+
+        class Listener {
+        public:
+            virtual void OnStartTone3000Download
+            (
+                handle_t handle,
+                const std::string &title
+            ) = 0;
+            virtual void OnTone3000Progress(
+                const DownloadProgress& downloadProgress
+            ) = 0;
+            virtual void OnTone3000DownloadComplete(
+                handle_t handle
+            ) = 0;
+
+        };
+
+
+        using self = Tone3000Downloader;
+        static std::shared_ptr<self> Create();
+
+        virtual void SetListener(Listener*listener) = 0;
+
+        virtual handle_t RequestDownload(
+            const std::string &path,
+            const std::string &url
+        ) = 0;
+
+        virtual void CancelDownload(
+            handle_t handle
+        ) = 0;
+
+        virtual void Close() = 0;
+        virtual DownloadProgress GetDownloadStatus() = 0;
+    };
+}