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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** 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
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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<QWidget> 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<int> 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<int> 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<QString, QMatchData> CacheItem;
+ typedef QMap<QModelIndex, CacheItem> 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
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