qqmlcontext.h 3.5 KB

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  1. /****************************************************************************
  2. **
  3. ** Copyright (C) 2016 The Qt Company Ltd.
  4. ** Contact: https://www.qt.io/licensing/
  5. **
  6. ** This file is part of the QtQml module of the Qt Toolkit.
  7. **
  8. ** $QT_BEGIN_LICENSE:LGPL$
  9. ** Commercial License Usage
  10. ** Licensees holding valid commercial Qt licenses may use this file in
  11. ** accordance with the commercial license agreement provided with the
  12. ** Software or, alternatively, in accordance with the terms contained in
  13. ** a written agreement between you and The Qt Company. For licensing terms
  14. ** and conditions see https://www.qt.io/terms-conditions. For further
  15. ** information use the contact form at https://www.qt.io/contact-us.
  16. **
  17. ** GNU Lesser General Public License Usage
  18. ** Alternatively, this file may be used under the terms of the GNU Lesser
  19. ** General Public License version 3 as published by the Free Software
  20. ** Foundation and appearing in the file LICENSE.LGPL3 included in the
  21. ** packaging of this file. Please review the following information to
  22. ** ensure the GNU Lesser General Public License version 3 requirements
  23. ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
  24. **
  25. ** GNU General Public License Usage
  26. ** Alternatively, this file may be used under the terms of the GNU
  27. ** General Public License version 2.0 or (at your option) the GNU General
  28. ** Public license version 3 or any later version approved by the KDE Free
  29. ** Qt Foundation. The licenses are as published by the Free Software
  30. ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
  31. ** included in the packaging of this file. Please review the following
  32. ** information to ensure the GNU General Public License requirements will
  33. ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
  34. ** https://www.gnu.org/licenses/gpl-3.0.html.
  35. **
  36. ** $QT_END_LICENSE$
  37. **
  38. ****************************************************************************/
  39. #ifndef QQMLCONTEXT_H
  40. #define QQMLCONTEXT_H
  41. #include <QtCore/qurl.h>
  42. #include <QtCore/qobject.h>
  43. #include <QtQml/qjsvalue.h>
  44. #include <QtCore/qmetatype.h>
  45. #include <QtCore/qvariant.h>
  46. QT_BEGIN_NAMESPACE
  47. class QString;
  48. class QQmlEngine;
  49. class QQmlRefCount;
  50. class QQmlContextPrivate;
  51. class QQmlCompositeTypeData;
  52. class QQmlContextData;
  53. class Q_QML_EXPORT QQmlContext : public QObject
  54. {
  55. Q_OBJECT
  56. Q_DECLARE_PRIVATE(QQmlContext)
  57. public:
  58. QQmlContext(QQmlEngine *parent, QObject *objParent = Q_NULLPTR);
  59. QQmlContext(QQmlContext *parent, QObject *objParent = Q_NULLPTR);
  60. virtual ~QQmlContext();
  61. bool isValid() const;
  62. QQmlEngine *engine() const;
  63. QQmlContext *parentContext() const;
  64. QObject *contextObject() const;
  65. void setContextObject(QObject *);
  66. QVariant contextProperty(const QString &) const;
  67. void setContextProperty(const QString &, QObject *);
  68. void setContextProperty(const QString &, const QVariant &);
  69. // ### Qt 6: no need for a mutable object, this should become a const QObject pointer
  70. QString nameForObject(QObject *) const;
  71. QUrl resolvedUrl(const QUrl &);
  72. void setBaseUrl(const QUrl &);
  73. QUrl baseUrl() const;
  74. private:
  75. friend class QQmlEngine;
  76. friend class QQmlEnginePrivate;
  77. friend class QQmlExpression;
  78. friend class QQmlExpressionPrivate;
  79. friend class QQmlComponent;
  80. friend class QQmlComponentPrivate;
  81. friend class QQmlScriptPrivate;
  82. friend class QQmlContextData;
  83. QQmlContext(QQmlContextData *);
  84. QQmlContext(QQmlEngine *, bool);
  85. Q_DISABLE_COPY(QQmlContext)
  86. };
  87. QT_END_NAMESPACE
  88. Q_DECLARE_METATYPE(QList<QObject*>)
  89. #endif // QQMLCONTEXT_H