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+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVIRTUALKEYBOARDINPUTCONTEXT_P_H
+#define QVIRTUALKEYBOARDINPUTCONTEXT_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 <QObject>
+#include <QRectF>
+#include <QInputMethodEvent>
+#include <QtVirtualKeyboard/qvirtualkeyboardinputcontext.h>
+#include <QtVirtualKeyboard/private/shadowinputcontext_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtVirtualKeyboard {
+class PlatformInputContext;
+class ShiftHandler;
+}
+class QVirtualKeyboardInputEngine;
+class QVirtualKeyboardInputContextPrivate;
+
+class QVIRTUALKEYBOARD_EXPORT QVirtualKeyboardInputContextPrivate : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PUBLIC(QVirtualKeyboardInputContext)
+    Q_PROPERTY(bool focus READ focus WRITE setFocus NOTIFY focusChanged)
+    Q_PROPERTY(QRectF keyboardRectangle READ keyboardRectangle WRITE setKeyboardRectangle NOTIFY keyboardRectangleChanged)
+    Q_PROPERTY(QRectF previewRectangle READ previewRectangle WRITE setPreviewRectangle NOTIFY previewRectangleChanged)
+    Q_PROPERTY(bool previewVisible READ previewVisible WRITE setPreviewVisible NOTIFY previewVisibleChanged)
+    Q_PROPERTY(QString locale READ locale WRITE setLocale NOTIFY localeChanged)
+    Q_PROPERTY(QObject *inputItem READ inputItem NOTIFY inputItemChanged)
+    Q_PROPERTY(QtVirtualKeyboard::ShiftHandler *shiftHandler READ shiftHandler CONSTANT)
+    Q_PROPERTY(QtVirtualKeyboard::ShadowInputContext *shadow READ shadow CONSTANT)
+
+    explicit QVirtualKeyboardInputContextPrivate(QVirtualKeyboardInputContext *q_ptr, QtVirtualKeyboard::PlatformInputContext *platformInputContext);
+    void init();
+
+public:
+    enum StateFlag {
+        ReselectEventState = 0x1,
+        InputMethodEventState = 0x2,
+        KeyEventState = 0x4,
+        InputMethodClickState = 0x8,
+        SyncShadowInputState = 0x10
+    };
+    Q_DECLARE_FLAGS(StateFlags, StateFlag)
+
+    ~QVirtualKeyboardInputContextPrivate();
+
+    bool focus() const;
+    void setFocus(bool focus);
+    QRectF keyboardRectangle() const;
+    void setKeyboardRectangle(QRectF rectangle);
+    QRectF previewRectangle() const;
+    void setPreviewRectangle(QRectF rectangle);
+    bool previewVisible() const;
+    void setPreviewVisible(bool visible);
+    QString locale() const;
+    void setLocale(const QString &locale);
+    QObject *inputItem() const;
+    QtVirtualKeyboard::ShiftHandler *shiftHandler() const;
+    QtVirtualKeyboard::ShadowInputContext *shadow() const;
+
+    // Helper functions
+    Q_INVOKABLE bool fileExists(const QUrl &fileUrl);
+    Q_INVOKABLE bool hasEnterKeyAction(QObject *item) const;
+
+Q_SIGNALS:
+    void focusChanged();
+    void keyboardRectangleChanged();
+    void previewRectangleChanged();
+    void previewVisibleChanged();
+    void localeChanged();
+    void inputItemChanged();
+    void navigationKeyPressed(int key, bool isAutoRepeat);
+    void navigationKeyReleased(int key, bool isAutoRepeat);
+
+public Q_SLOTS:
+    void hideInputPanel();
+    void updateAvailableLocales(const QStringList &availableLocales);
+    void forceCursorPosition(int anchorPosition, int cursorPosition);
+
+private Q_SLOTS:
+    void onInputItemChanged();
+
+private:
+    void sendPreedit(const QString &text, const QList<QInputMethodEvent::Attribute> &attributes, int replaceFrom, int replaceLength);
+    void reset();
+    void commit();
+    void update(Qt::InputMethodQueries queries);
+    void invokeAction(QInputMethod::Action action, int cursorPosition);
+    bool filterEvent(const QEvent *event);
+    void addSelectionAttribute(QList<QInputMethodEvent::Attribute> &attributes);
+    bool testAttribute(const QList<QInputMethodEvent::Attribute> &attributes, QInputMethodEvent::AttributeType attributeType) const;
+    int findAttribute(const QList<QInputMethodEvent::Attribute> &attributes, QInputMethodEvent::AttributeType attributeType) const;
+
+private:
+    QVirtualKeyboardInputContext *q_ptr;
+    QtVirtualKeyboard::PlatformInputContext *platformInputContext;
+    QVirtualKeyboardInputEngine *inputEngine;
+    QtVirtualKeyboard::ShiftHandler *_shiftHandler;
+    QRectF keyboardRect;
+    QRectF previewRect;
+    bool _previewVisible;
+    bool animating;
+    bool _focus;
+    StateFlags stateFlags;
+    int cursorPosition;
+    int anchorPosition;
+    int forceAnchorPosition;
+    int _forceCursorPosition;
+    Qt::InputMethodHints inputMethodHints;
+    QString preeditText;
+    QList<QInputMethodEvent::Attribute> preeditTextAttributes;
+    QString surroundingText;
+    QString selectedText;
+    QRectF anchorRectangle;
+    QRectF cursorRectangle;
+    bool selectionControlVisible;
+    bool anchorRectIntersectsClipRect;
+    bool cursorRectIntersectsClipRect;
+#ifdef QT_VIRTUALKEYBOARD_ARROW_KEY_NAVIGATION
+    QSet<int> activeNavigationKeys;
+#endif
+    QSet<quint32> activeKeys;
+    QtVirtualKeyboard::ShadowInputContext _shadow;
+
+    friend class QtVirtualKeyboard::PlatformInputContext;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QVirtualKeyboardInputContextPrivate::StateFlags)
+
+QT_END_NAMESPACE
+
+#endif // QVIRTUALKEYBOARDINPUTCONTEXT_P_H