/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** 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 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QCOMPLETER_P_H #define QCOMPLETER_P_H // // W A R N I N G // ------------- // // This file is not part of the Qt API. It exists purely as an // implementation detail. This header file may change from version to // version without notice, or even be removed. // // We mean it. // #include "private/qobject_p.h" #ifndef QT_NO_COMPLETER #include "QtGui/qtreeview.h" #include "QtGui/qabstractproxymodel.h" #include "qcompleter.h" #include "QtGui/qitemdelegate.h" #include "QtGui/qpainter.h" #include "private/qabstractproxymodel_p.h" QT_BEGIN_NAMESPACE class QCompletionModel; class QCompleterPrivate : public QObjectPrivate { Q_DECLARE_PUBLIC(QCompleter) public: QCompleterPrivate(); ~QCompleterPrivate() { delete popup; } void init(QAbstractItemModel *model = 0); QPointer widget; QCompletionModel *proxy; QAbstractItemView *popup; QCompleter::CompletionMode mode; QString prefix; Qt::CaseSensitivity cs; int role; int column; QCompleter::ModelSorting sorting; bool wrap; bool eatFocusOut; QRect popupRect; void showPopup(const QRect&); void _q_complete(QModelIndex, bool = false); void _q_completionSelected(const QItemSelection&); void _q_autoResizePopup(); void setCurrentIndex(QModelIndex, bool = true); }; class QIndexMapper { public: QIndexMapper() : v(false), f(0), t(-1) { } QIndexMapper(int f, int t) : v(false), f(f), t(t) { } QIndexMapper(QVector vec) : v(true), vector(vec), f(-1), t(-1) { } inline int count() const { return v ? vector.count() : t - f + 1; } inline int operator[] (int index) const { return v ? vector[index] : f + index; } inline int indexOf(int x) const { return v ? vector.indexOf(x) : ((t < f) ? -1 : x - f); } inline bool isValid() const { return !isEmpty(); } inline bool isEmpty() const { return v ? vector.isEmpty() : (t < f); } inline void append(int x) { Q_ASSERT(v); vector.append(x); } inline int first() const { return v ? vector.first() : f; } inline int last() const { return v ? vector.last() : t; } inline int from() const { Q_ASSERT(!v); return f; } inline int to() const { Q_ASSERT(!v); return t; } inline int cost() const { return vector.count()+2; } private: bool v; QVector vector; int f, t; }; struct QMatchData { QMatchData() : exactMatchIndex(-1) { } QMatchData(const QIndexMapper& indices, int em, bool p) : indices(indices), exactMatchIndex(em), partial(p) { } QIndexMapper indices; inline bool isValid() const { return indices.isValid(); } int exactMatchIndex; bool partial; }; class QCompletionEngine { public: typedef QMap CacheItem; typedef QMap Cache; QCompletionEngine(QCompleterPrivate *c) : c(c), curRow(-1), cost(0) { } virtual ~QCompletionEngine() { } void filter(const QStringList &parts); QMatchData filterHistory(); bool matchHint(QString, const QModelIndex&, QMatchData*); void saveInCache(QString, const QModelIndex&, const QMatchData&); bool lookupCache(QString part, const QModelIndex& parent, QMatchData *m); virtual void filterOnDemand(int) { } virtual QMatchData filter(const QString&, const QModelIndex&, int) = 0; int matchCount() const { return curMatch.indices.count() + historyMatch.indices.count(); } QMatchData curMatch, historyMatch; QCompleterPrivate *c; QStringList curParts; QModelIndex curParent; int curRow; Cache cache; int cost; }; class QSortedModelEngine : public QCompletionEngine { public: QSortedModelEngine(QCompleterPrivate *c) : QCompletionEngine(c) { } QMatchData filter(const QString&, const QModelIndex&, int); QIndexMapper indexHint(QString, const QModelIndex&, Qt::SortOrder); Qt::SortOrder sortOrder(const QModelIndex&) const; }; class QUnsortedModelEngine : public QCompletionEngine { public: QUnsortedModelEngine(QCompleterPrivate *c) : QCompletionEngine(c) { } void filterOnDemand(int); QMatchData filter(const QString&, const QModelIndex&, int); private: int buildIndices(const QString& str, const QModelIndex& parent, int n, const QIndexMapper& iv, QMatchData* m); }; class QCompleterItemDelegate : public QItemDelegate { public: QCompleterItemDelegate(QAbstractItemView *view) : QItemDelegate(view), view(view) { } void paint(QPainter *p, const QStyleOptionViewItem& opt, const QModelIndex& idx) const { QStyleOptionViewItem optCopy = opt; optCopy.showDecorationSelected = true; if (view->currentIndex() == idx) optCopy.state |= QStyle::State_HasFocus; QItemDelegate::paint(p, optCopy, idx); } private: QAbstractItemView *view; }; class QCompletionModelPrivate; class QCompletionModel : public QAbstractProxyModel { Q_OBJECT public: QCompletionModel(QCompleterPrivate *c, QObject *parent); ~QCompletionModel() { delete engine; } void createEngine(); void setFiltered(bool); void filter(const QStringList& parts); int completionCount() const; int currentRow() const { return engine->curRow; } bool setCurrentRow(int row); QModelIndex currentIndex(bool) const; void resetModel(); QModelIndex index(int row, int column, const QModelIndex & = QModelIndex()) const; int rowCount(const QModelIndex &index = QModelIndex()) const; int columnCount(const QModelIndex &index = QModelIndex()) const; bool hasChildren(const QModelIndex &parent = QModelIndex()) const; QModelIndex parent(const QModelIndex & = QModelIndex()) const { return QModelIndex(); } QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const; void setSourceModel(QAbstractItemModel *sourceModel); QModelIndex mapToSource(const QModelIndex& proxyIndex) const; QModelIndex mapFromSource(const QModelIndex& sourceIndex) const; QCompleterPrivate *c; QCompletionEngine *engine; bool showAll; Q_DECLARE_PRIVATE(QCompletionModel) signals: void rowsAdded(); public Q_SLOTS: void invalidate(); void rowsInserted(); void modelDestroyed(); }; class QCompletionModelPrivate : public QAbstractProxyModelPrivate { Q_DECLARE_PUBLIC(QCompletionModel) }; QT_END_NAMESPACE #endif // QT_NO_COMPLETER #endif // QCOMPLETER_P_H