NOISSUE refactor *Download into more, smaller pieces

* Download is now Download.
* Download uses Sink subclasses to process various events.
* Validators can be used to further customize the Sink behaviour.

api/logic/net/Download.h

@@ -0,0 +1,66 @@
+/* Copyright 2013-2015 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "NetAction.h"
+#include "HttpMetaCache.h"
+#include "Validator.h"
+#include "Sink.h"
+
+#include "multimc_logic_export.h"
+namespace Net {
+class MULTIMC_LOGIC_EXPORT Download : public NetAction
+{
+	Q_OBJECT
+
+public: /* types */
+	typedef std::shared_ptr<class Download> Ptr;
+
+protected: /* con/des */
+	explicit Download();
+public:
+	virtual ~Download(){};
+	static Download::Ptr makeCached(QUrl url, MetaEntryPtr entry);
+	static Download::Ptr makeByteArray(QUrl url, QByteArray *output);
+	static Download::Ptr makeFile(QUrl url, QString path);
+
+public: /* methods */
+	// FIXME: remove this
+	QString getTargetFilepath()
+	{
+		return m_target_path;
+	}
+	// FIXME: remove this
+	void addValidator(Validator * v);
+
+private: /* methods */
+	bool handleRedirect();
+
+protected slots:
+	virtual void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);
+	virtual void downloadError(QNetworkReply::NetworkError error);
+	virtual void downloadFinished();
+	virtual void downloadReadyRead();
+
+public slots:
+	virtual void start();
+
+private: /* data */
+	// FIXME: remove this, it has no business being here.
+	QString m_target_path;
+	std::unique_ptr<Sink> m_sink;
+};
+}