--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/QTfrontend/ui/widget/SmartLineEdit.h	Fri Oct 28 18:26:17 2011 +0200
@@ -0,0 +1,154 @@
+/*
+ * Hedgewars, a free turn based strategy game
+ * Copyright (c) 2006-2007 Igor Ulyanov <iulyanov@gmail.com>
+ * Copyright (c) 2007-2011 Andrey Korotaev <unC0Rr@gmail.com>
+ *
+ * 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; version 2 of the License
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+/**
+ * @file
+ * @brief SmartLineEdit class definition
+ */
+
+#ifndef HEDGEWARS_SMARTLINEEDIT_H
+#define HEDGEWARS_SMARTLINEEDIT_H
+
+#include <QMap>
+#include <QString>
+#include <QStringList>
+
+#include <QEvent>
+#include <QKeyEvent>
+
+#include <QRegExp>
+
+#include "HistoryLineEdit.h"
+
+/**
+ * @brief {@link HistoryLineEdit} that features auto-completion with TAB key
+ *         and clear with ESC key.
+ *
+ * Notes:
+ * <ul>
+ *   <li>A Keyword can either be a command (if first word) or
+ *       a nickname (completed regardless of position in text).</li>
+ * </ul>
+ * 
+ * @author sheepluva
+ * @since 0.9.17
+ */
+class SmartLineEdit : public HistoryLineEdit
+{
+ Q_OBJECT
+
+public:
+    /**
+    * @brief Class constructor.
+    * @param parent parent QWidget.
+    * @param maxHistorySize maximum amount of history entries kept.
+    */
+    SmartLineEdit(QWidget * parent = 0, int maxHistorySize = 64);
+
+    /**
+    * @brief Class destructor.
+    */
+    ~SmartLineEdit();
+
+    /**
+     * @brief Adds commands to the auto-completion feature.
+     * @param commands list of commands to be added.
+     */
+    void addCommands(const QStringList & commands);
+
+    /**
+     * @brief Adds a single nickname to the auto-completion feature.
+     * @param nickname name to be added.
+     */
+    void addNickname(const QString & nickname);
+
+    /**
+     * @brief Removes commands from the auto-completion feature.
+     * @param commands list of commands to be removed.
+     */
+    void removeCommands(const QStringList & commands);
+
+    /**
+     * @brief Removes a single nickname from the auto-completion feature.
+     * @param nickname name to be removed.
+     */
+    void removeNickname(const QString & nickname);
+
+    /**
+     * @brief Forget all keywords and input history.
+     */
+    void reset();
+
+
+protected:
+    /**
+     * @brief Overrides method of parent class.
+     * Forward pressed TAB to parent class' method (for focus handling etc)
+     * only if line is empty.
+     * 
+     * @param event the event.
+     * @return returns true if the event was recognized.
+     */
+    virtual bool event(QEvent * event);
+
+    /**
+     * @brief Overrides method of parent class.
+     * Autocompletes if TAB is reported as pressed key in the key event,
+     * ESC leads to the contents being cleared.
+     * 
+     * Other keys are forwarded to parent method.
+     *
+     * @param event the key event.
+     */
+    virtual void keyPressEvent(QKeyEvent * event);
+
+
+private:
+    QRegExp m_whitespace; ///< regexp that matches a whitespace
+
+    QStringList * m_cmds;  ///< list of recognized commands
+    QStringList * m_nicks; ///< list of recognized nicknames
+
+    /// recognized nicknames, sorted case-insensitive
+    QMap<QString, QString> * m_sorted_nicks;
+
+    // these variables contain information about the last replacement
+    // they get reset whenever cursor is moved or text is changed
+
+    QString m_beforeMatch; ///< the string that was just matched
+    bool m_hasJustMatched; ///< whether this widget just did an auto-completion
+    QString m_prefix; ///< prefix of the text replacement this widget just did
+    QString m_postfix; ///< postfix of the text replacement this widget just did
+
+    /**
+     * @brief Autocompletes the contents based on the known commands and/or names.
+     */
+    void autoComplete();
+
+
+private slots:
+    /**
+     * @brief Resets the information about the last match and text replacement.
+     */
+    void resetAutoCompletionStatus();
+};
+
+
+
+#endif // HEDGEWARS_SMARTLINEEDIT_H