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engines/ultima/ultima4/conversation/dialogueloader.h

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+/* 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/>.
+ *
+ */
+
+#ifndef ULTIMA4_CONVERSATION_DIALOGUELOADER_H
+#define ULTIMA4_CONVERSATION_DIALOGUELOADER_H
+
+#include "common/hashmap.h"
+#include "common/str.h"
+#include "common/stream.h"
+
+namespace Ultima {
+namespace Ultima4 {
+
+class Dialogue;
+
+/**
+ * The generic dialogue loader interface.  Different dialogue
+ * loaders should override the load method to load dialogues from
+ * different sources (.tlk files, xml config elements, etc.).  They
+ * must also register themselves with registerLoader for one or more
+ * source types.  By convention, the source type of load() and
+ * registerLoader() is an xu4-specific mime type.
+ * The two main types used are application/x-u4tlk and text/x-u4cfg.
+ */
+class DialogueLoader {
+public:
+	virtual ~DialogueLoader() {}
+
+	virtual Dialogue *load(Common::SeekableReadStream *source) = 0;
+};
+
+class DialogueLoaders {
+private:
+	Common::HashMap<Common::String, DialogueLoader *> _loaders;
+public:
+	static DialogueLoader *getLoader(const Common::String &mimeType);
+public:
+	DialogueLoaders();
+	~DialogueLoaders();
+
+	void registerLoader(DialogueLoader *loader, const Common::String &mimeType) {
+		_loaders[mimeType] = loader;
+	}
+
+	DialogueLoader *operator[](const Common::String &mimeType) {
+		return _loaders[mimeType];
+	}
+};
+
+} // End of namespace Ultima4
+} // End of namespace Ultima
+
+#endif