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diff --git a/kipi-plugins/htmlexport/abstractthemeparameter.h b/kipi-plugins/htmlexport/abstractthemeparameter.h
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+// vim: set tabstop=4 shiftwidth=4 noexpandtab:
+/*
+A KIPI plugin to generate HTML image galleries
+Copyright 2006 by Aurelien Gateau <aurelien dot gateau at free.fr>
+
+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, Cambridge, MA 02110-1301, USA.
+
+*/
+#ifndef ABSTRACTTHEMEPARAMETER_H
+#define ABSTRACTTHEMEPARAMETER_H
+
+class QCString;
+class QString;
+class QWidget;
+class KConfigBase;
+
+namespace KIPIHTMLExport {
+
+/**
+ * Represents a theme parameter. For each type of parameter, one should inherit
+ * from this class and add the necessary code in the Theme class to load the
+ * new type.
+ */
+class AbstractThemeParameter {
+public:
+	AbstractThemeParameter();
+	virtual ~AbstractThemeParameter();
+
+	/**
+	 * Reads theme parameters from configFile. Initializes the internalName,
+	 * name and defaultValue fields.
+	 */
+	virtual void init(const QCString& internalName, const KConfigBase* configFile);
+
+	QCString internalName() const;
+
+	QString name() const;
+
+	QString defaultValue() const;
+
+	/**
+	 * This method should return a QWidget representing the parameter,
+	 * initialized with value.
+	 */
+	virtual QWidget* createWidget(QWidget* parent, const QString& value) const = 0;
+
+	/**
+	 * The opposite of createWidget: given a widget previously created with
+	 * createWidget, this method returns the current widget value.
+	 */
+	virtual QString valueFromWidget(QWidget*) const = 0;
+
+private:
+	class Private;
+	Private* d;
+};
+
+} // namespace
+
+#endif /* ABSTRACTTHEMEPARAMETER_H */