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-rw-r--r--Libraries/LibWeb/Loader/Resource.h105
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diff --git a/Libraries/LibWeb/Loader/Resource.h b/Libraries/LibWeb/Loader/Resource.h
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+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/ByteBuffer.h>
+#include <AK/HashMap.h>
+#include <AK/HashTable.h>
+#include <AK/Noncopyable.h>
+#include <AK/RefCounted.h>
+#include <AK/URL.h>
+#include <LibWeb/Forward.h>
+
+namespace Web {
+
+class ResourceClient;
+
+class Resource : public RefCounted<Resource> {
+ AK_MAKE_NONCOPYABLE(Resource);
+ AK_MAKE_NONMOVABLE(Resource);
+
+public:
+ static NonnullRefPtr<Resource> create(Badge<ResourceLoader>, const URL&);
+ ~Resource();
+
+ bool is_loaded() const { return m_loaded; }
+
+ bool is_failed() const { return m_failed; }
+ const String& error() const { return m_error; }
+
+ bool has_encoded_data() const { return !m_encoded_data.is_null(); }
+
+ const URL& url() const { return m_url; }
+ const ByteBuffer& encoded_data() const { return m_encoded_data; }
+
+ void register_client(Badge<ResourceClient>, ResourceClient&);
+ void unregister_client(Badge<ResourceClient>, ResourceClient&);
+
+ template<typename Callback>
+ void for_each_client(Callback callback)
+ {
+ // FIXME: This should use some kind of smart pointer to ResourceClient!
+ Vector<ResourceClient*, 16> clients_copy;
+ clients_copy.ensure_capacity(m_clients.size());
+ for (auto* client : m_clients)
+ clients_copy.append(client);
+ for (auto* client : clients_copy)
+ callback(*client);
+ }
+
+ void did_load(Badge<ResourceLoader>, const ByteBuffer& data, const HashMap<String, String, CaseInsensitiveStringTraits>& headers);
+ void did_fail(Badge<ResourceLoader>, const String& error);
+
+private:
+ explicit Resource(const URL&);
+
+ URL m_url;
+ ByteBuffer m_encoded_data;
+ bool m_loaded { false };
+ bool m_failed { false };
+ String m_error;
+ HashMap<String, String, CaseInsensitiveStringTraits> m_response_headers;
+ HashTable<ResourceClient*> m_clients;
+};
+
+class ResourceClient {
+public:
+ virtual ~ResourceClient();
+
+ virtual void resource_did_load() { }
+ virtual void resource_did_fail() { }
+
+protected:
+ Resource* resource() { return m_resource; }
+ const Resource* resource() const { return m_resource; }
+ void set_resource(Resource*);
+
+private:
+ RefPtr<Resource> m_resource;
+};
+
+}