/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
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** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at http://www.qt.io/contact-us.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
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** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/

#ifndef QCOMPLETER_H
#define QCOMPLETER_H

#include <QtCore/qobject.h>
#include <QtCore/qpoint.h>
#include <QtCore/qstring.h>
#include <QtCore/qabstractitemmodel.h>
#include <QtCore/qrect.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

#ifndef QT_NO_COMPLETER

class QCompleterPrivate;
class QAbstractItemView;
class QAbstractProxyModel;
class QWidget;

class Q_GUI_EXPORT QCompleter : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString completionPrefix READ completionPrefix WRITE setCompletionPrefix)
    Q_PROPERTY(ModelSorting modelSorting READ modelSorting WRITE setModelSorting)
    Q_PROPERTY(CompletionMode completionMode READ completionMode WRITE setCompletionMode)
    Q_PROPERTY(int completionColumn READ completionColumn WRITE setCompletionColumn)
    Q_PROPERTY(int completionRole READ completionRole WRITE setCompletionRole)
    Q_PROPERTY(int maxVisibleItems READ maxVisibleItems WRITE setMaxVisibleItems)
    Q_PROPERTY(Qt::CaseSensitivity caseSensitivity READ caseSensitivity WRITE setCaseSensitivity)
    Q_PROPERTY(bool wrapAround READ wrapAround WRITE setWrapAround)

public:
    enum CompletionMode {
        PopupCompletion,
        UnfilteredPopupCompletion,
        InlineCompletion
    };

    enum ModelSorting {
        UnsortedModel = 0,
        CaseSensitivelySortedModel,
        CaseInsensitivelySortedModel
    };

    QCompleter(QObject *parent = 0);
    QCompleter(QAbstractItemModel *model, QObject *parent = 0);
#ifndef QT_NO_STRINGLISTMODEL
    QCompleter(const QStringList& completions, QObject *parent = 0);
#endif
    ~QCompleter();

    void setWidget(QWidget *widget);
    QWidget *widget() const;

    void setModel(QAbstractItemModel *c);
    QAbstractItemModel *model() const;

    void setCompletionMode(CompletionMode mode);
    CompletionMode completionMode() const;

    QAbstractItemView *popup() const;
    void setPopup(QAbstractItemView *popup);

    void setCaseSensitivity(Qt::CaseSensitivity caseSensitivity);
    Qt::CaseSensitivity caseSensitivity() const;

    void setModelSorting(ModelSorting sorting);
    ModelSorting modelSorting() const;

    void setCompletionColumn(int column);
    int  completionColumn() const;

    void setCompletionRole(int role);
    int  completionRole() const;

    bool wrapAround() const;

    int maxVisibleItems() const;
    void setMaxVisibleItems(int maxItems);

    int completionCount() const;
    bool setCurrentRow(int row);
    int currentRow() const;

    QModelIndex currentIndex() const;
    QString currentCompletion() const;

    QAbstractItemModel *completionModel() const;

    QString completionPrefix() const;

public Q_SLOTS:
    void setCompletionPrefix(const QString &prefix);
    void complete(const QRect& rect = QRect());
    void setWrapAround(bool wrap);

public:
    virtual QString pathFromIndex(const QModelIndex &index) const;
    virtual QStringList splitPath(const QString &path) const;

protected:
    bool eventFilter(QObject *o, QEvent *e);
    bool event(QEvent *);

Q_SIGNALS:
    void activated(const QString &text);
    void activated(const QModelIndex &index);
    void highlighted(const QString &text);
    void highlighted(const QModelIndex &index);

private:
    Q_DISABLE_COPY(QCompleter)
    Q_DECLARE_PRIVATE(QCompleter)

    Q_PRIVATE_SLOT(d_func(), void _q_complete(QModelIndex))
    Q_PRIVATE_SLOT(d_func(), void _q_completionSelected(const QItemSelection&))
    Q_PRIVATE_SLOT(d_func(), void _q_autoResizePopup())
    Q_PRIVATE_SLOT(d_func(), void _q_fileSystemModelDirectoryLoaded(const QString&))
};

#endif // QT_NO_COMPLETER

QT_END_NAMESPACE

QT_END_HEADER

#endif // QCOMPLETER_H