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39 
40 #ifndef QWINDOWSDIALOGHELPER_H
41 #define QWINDOWSDIALOGHELPER_H
42 
43 #include <QtCore/qt_windows.h>
44 #include <qpa/qplatformdialoghelper.h>
45 #include <qpa/qplatformtheme.h>
46 #include <QtCore/qstringlist.h>
47 #include <QtCore/qsharedpointer.h>
48 
49 QT_BEGIN_NAMESPACE
50 
51 class QFileDialog;
52 class QDialog;
53 class QThread;
54 class QWindowsNativeDialogBase;
55 
56 namespace QWindowsDialogs
57 {
58     void eatMouseMove();
59 
60     bool useHelper(QPlatformTheme::DialogType type);
61     QPlatformDialogHelper *createHelper(QPlatformTheme::DialogType type);
62 } // namespace QWindowsDialogs
63 
64 template <class BaseClass>
65 class QWindowsDialogHelperBase : public BaseClass
66 {
67     Q_DISABLE_COPY_MOVE(QWindowsDialogHelperBase)
68 public:
69     using QWindowsNativeDialogBasePtr = QSharedPointer<QWindowsNativeDialogBase>;
~QWindowsDialogHelperBase()70     ~QWindowsDialogHelperBase() { cleanupThread(); }
71 
72     void exec() override;
73     bool show(Qt::WindowFlags windowFlags,
74               Qt::WindowModality windowModality,
75               QWindow *parent) override;
76     void hide() override;
77 
78     virtual bool supportsNonModalDialog(const QWindow * /* parent */ = nullptr) const { return true; }
79 
80 protected:
81     QWindowsDialogHelperBase() = default;
82     QWindowsNativeDialogBase *nativeDialog() const;
hasNativeDialog()83     inline bool hasNativeDialog() const { return m_nativeDialog; }
84     void timerEvent(QTimerEvent *) override;
85 
86 private:
87     virtual QWindowsNativeDialogBase *createNativeDialog() = 0;
88     inline QWindowsNativeDialogBase *ensureNativeDialog();
89     inline void startDialogThread();
90     inline void stopTimer();
91     void cleanupThread();
92 
93     QWindowsNativeDialogBasePtr m_nativeDialog;
94     HWND m_ownerWindow = nullptr;
95     int m_timerId = 0;
96     QThread *m_thread = nullptr;
97 };
98 
99 QT_END_NAMESPACE
100 
101 #endif // QWINDOWSDIALOGHELPER_H
102