BACKENDS: Add base support for DLC Downloader

common/dlc-downloader.cpp

@@ -0,0 +1,32 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#include "common/dlc-downloader.h"
+#include "common/system.h"
+
+namespace Common {
+
+DLCDownloader::DLCDownloader() {
+  _downloadProgress = 0;
+}
+
+}

common/dlc-downloader.h

@@ -0,0 +1,47 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_DLC_DOWNLOADER_ABSTRACT_H
+#define BACKENDS_DLC_DOWNLOADER_ABSTRACT_H
+
+#include "common/scummsys.h"
+#include "common/str.h"
+
+namespace Common {
+
+class DLCDownloader {
+
+public:
+	DLCDownloader();
+	virtual ~DLCDownloader() {}
+
+  virtual void startDownload(int id);
+
+private:
+	int _downloadProgress;
+
+};
+
+
+} // End of namespace Common
+
+#endif

common/module.mk

@@ -7,6 +7,7 @@ MODULE_OBJS := \
 	coroutines.o \
 	dbcs-str.o \
 	debug.o \
+	dlc-downloader.o \
 	error.o \
 	events.o \
 	file.o \

common/system.cpp

@@ -33,6 +33,7 @@
 #include "common/str-enc.h"
 #include "common/textconsole.h"
 #include "common/text-to-speech.h"
+#include "common/dlc-downloader.h"
 
 #include "backends/audiocd/default/default-audiocd.h"
 #include "backends/fs/fs-factory.h"
@@ -52,6 +53,7 @@ OSystem::OSystem() {
 	_updateManager = nullptr;
 #endif
 	_textToSpeechManager = nullptr;
+	_dlcDownloader = nullptr;
 #if defined(USE_SYSDIALOGS)
 	_dialogManager = nullptr;
 #endif
@@ -82,6 +84,9 @@ OSystem::~OSystem() {
 	delete _textToSpeechManager;
 	_textToSpeechManager = nullptr;
 
+	delete _dlcDownloader;
+	_dlcDownloader = nullptr;
+
 #if defined(USE_SYSDIALOGS)
 	delete _dialogManager;
 	_dialogManager = nullptr;

common/system.h

@@ -60,6 +60,7 @@ class TaskbarManager;
 class UpdateManager;
 #endif
 class TextToSpeechManager;
+class DLCDownloader;
 #if defined(USE_SYSDIALOGS)
 class DialogManager;
 #endif
@@ -243,6 +244,8 @@ class OSystem : Common::NonCopyable {
 	 */
 	Common::TextToSpeechManager *_textToSpeechManager;
 
+	Common::DLCDownloader *_dlcDownloader;
+
 #if defined(USE_SYSDIALOGS)
 	/**
 	 * No default value is provided for _dialogManager by OSystem.
@@ -1645,6 +1648,10 @@ class OSystem : Common::NonCopyable {
 		return _textToSpeechManager;
 	}
 
+	virtual Common::DLCDownloader *getDLCDownloader() {
+		return _dlcDownloader;
+	}
+
 #if defined(USE_SYSDIALOGS)
 	/**
 	 * Return the DialogManager, which is used to handle system dialogs.

gui/download-games-dialog.cpp

@@ -24,6 +24,7 @@
 #include "gui/widget.h"
 #include "gui/widgets/list.h"
 #include "common/translation.h"
+#include "common/dlc-downloader.h"
 
 namespace GUI {
 
@@ -43,8 +44,8 @@ DownloadGamesDialog::DownloadGamesDialog()
 
 	// Populate the ListWidget
 	Common::U32StringArray games = {
-    _("Beneath a Steel Sky - Freeware CD Version"),
-    _("Beneath a Steel Sky - Freeware Floppy Version"),
+  	_("Beneath a Steel Sky - Freeware CD Version"),
+  	_("Beneath a Steel Sky - Freeware Floppy Version"),
     _("Broken Sword 2.5: The Return of the Templars - Freeware Version"),
 		_("Broken Sword 2.5: The Return of the Templars - Hebrew translation AddOn"),
 		_("Dráscula: The Vampire Strikes Back - Freeware Version (English)"),
@@ -74,7 +75,6 @@ DownloadGamesDialog::DownloadGamesDialog()
 
 void DownloadGamesDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
 	switch (cmd) {
-	//Search for typed-in directory
 	case kDownloadSelectedCmd: {
 		MessageDialog dialog("Downloading: " + _gamesList->getSelectedString());
 		dialog.runModal();
@@ -85,4 +85,11 @@ void DownloadGamesDialog::handleCommand(CommandSender *sender, uint32 cmd, uint3
 	}
 }
 
+void DownloadGamesDialog::initDownload(int id) {
+	Common::DLCDownloader *dlcDownloader = g_system->getDLCDownloader();
+	if (dlcDownloader == nullptr) return;
+
+	dlcDownloader->startDownload(id);
+}
+
 } // End of namespace GUI

gui/download-games-dialog.h

@@ -32,6 +32,7 @@ class DownloadGamesDialog : public Dialog {
 	DownloadGamesDialog();
 
 	void handleCommand(CommandSender *sender, uint32 cmd, uint32 data) override;
+	void initDownload(int id);
 
 private:
 	ListWidget		*_gamesList;