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39 
40 #ifndef QDIALOG_P_H
41 #define QDIALOG_P_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists purely as an
48 // implementation detail.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <QtWidgets/private/qtwidgetsglobal_p.h>
55 #include "private/qwidget_p.h"
56 #include "QtCore/qeventloop.h"
57 #include "QtCore/qpointer.h"
58 #include "QtWidgets/qdialog.h"
59 #if QT_CONFIG(pushbutton)
60 #include "QtWidgets/qpushbutton.h"
61 #endif
62 #include <qpa/qplatformdialoghelper.h>
63 
64 QT_REQUIRE_CONFIG(dialog);
65 
66 QT_BEGIN_NAMESPACE
67 
68 class QSizeGrip;
69 
70 class Q_WIDGETS_EXPORT QDialogPrivate : public QWidgetPrivate
71 {
Q_DECLARE_PUBLIC(QDialog)72     Q_DECLARE_PUBLIC(QDialog)
73 public:
74 
75     QDialogPrivate()
76         :
77 #if QT_CONFIG(pushbutton)
78           mainDef(nullptr),
79 #endif
80           orientation(Qt::Horizontal),extension(nullptr), doShowExtension(false),
81 #if QT_CONFIG(sizegrip)
82           resizer(nullptr),
83           sizeGripEnabled(false),
84 #endif
85           rescode(0), resetModalityTo(-1), wasModalitySet(true), eventLoop(nullptr),
86           nativeDialogInUse(false), m_platformHelper(nullptr), m_platformHelperCreated(false)
87         {}
88     ~QDialogPrivate();
89 
90     QWindow *transientParentWindow() const;
91     bool setNativeDialogVisible(bool visible);
92     QVariant styleHint(QPlatformDialogHelper::StyleHint hint) const;
93     void deletePlatformHelper();
94 
95 #if QT_CONFIG(pushbutton)
96     QPointer<QPushButton> mainDef;
97 #endif
98     Qt::Orientation orientation;
99     QWidget *extension;
100     bool doShowExtension;
101     QSize size, min, max;
102 #if QT_CONFIG(sizegrip)
103     QSizeGrip *resizer;
104     bool sizeGripEnabled;
105 #endif
106     QPoint lastRMBPress;
107 
108 #if QT_CONFIG(pushbutton)
109     void setDefault(QPushButton *);
110     void setMainDefault(QPushButton *);
111     void hideDefault();
112 #endif
113     void resetModalitySetByOpen();
114 
115     int rescode;
116     int resetModalityTo;
117     bool wasModalitySet;
118 
119     QPointer<QEventLoop> eventLoop;
120 
121     bool nativeDialogInUse;
122     QPlatformDialogHelper *platformHelper() const;
123     virtual bool canBeNativeDialog() const;
124 
125     void hide(int resultCode);
126     void finalize(int resultCode, int dialogCode);
127 
128 private:
initHelper(QPlatformDialogHelper *)129     virtual void initHelper(QPlatformDialogHelper *) {}
helperPrepareShow(QPlatformDialogHelper *)130     virtual void helperPrepareShow(QPlatformDialogHelper *) {}
helperDone(QDialog::DialogCode,QPlatformDialogHelper *)131     virtual void helperDone(QDialog::DialogCode, QPlatformDialogHelper *) {}
132 
133     mutable QPlatformDialogHelper *m_platformHelper;
134     mutable bool m_platformHelperCreated;
135 };
136 
137 template <typename T>
138 class QAutoPointer {
139     QPointer<T> o;
funcinternal140     struct internal { void func() {} };
141     typedef void (internal::*RestrictedBool)();
142 public:
QAutoPointer(T * t)143     explicit QAutoPointer(T *t) noexcept : o(t) {}
~QAutoPointer()144     ~QAutoPointer() { delete o; }
145 
146     T *operator->() const noexcept { return get(); }
get()147     T *get() const noexcept { return o; }
148     T &operator*() const { return *get(); }
RestrictedBool()149     operator RestrictedBool() const noexcept { return o ? &internal::func : nullptr; }
150     bool operator!() const noexcept { return !o; }
151 private:
152     Q_DISABLE_COPY(QAutoPointer);
153 };
154 
155 QT_END_NAMESPACE
156 
157 #endif // QDIALOG_P_H
158