Export functions to add custom mime converters.

For use with public API in QtMacExtras.

This goes into Qt stable: Fix for new functionality,
and close a feature regression against Qt 4.

Change-Id: I555fdff3ddb39336ccd72f9711d465f1c18c6b45
Reviewed-by: James Turner <james.turner@kdab.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>

src/plugins/platforms/cocoa/qcocoanativeinterface.h

@@ -59,6 +59,8 @@ public:
     void *nativeResourceForContext(const QByteArray &resourceString, QOpenGLContext *context);
     void *nativeResourceForWindow(const QByteArray &resourceString, QWindow *window);
 
+    NativeResourceForIntegrationFunction nativeResourceFunctionForIntegration(const QByteArray &resource) Q_DECL_OVERRIDE;
+
     static void *cglContextForContext(QOpenGLContext *context);
     static void *nsOpenGLContextForContext(QOpenGLContext* context);
 
@@ -83,6 +85,13 @@ private:
         Needed by the native print dialog in the QtPrintSupport library.
     */
     Q_INVOKABLE void *NSPrintInfoForPrintEngine(QPrintEngine *printEngine);
+
+    // QMacPastebardMime support. The mac pasteboard void pointers are
+    // QMacPastebardMime instances from the cocoa plugin or qtmacextras
+    // These two classes are kept in sync and can be casted between.
+    static void addToMimeList(void *macPasteboardMime);
+    static void removeFromMimeList(void *macPasteboardMime);
+    static void registerDraggedTypes(const QStringList &types);
 };
 
 #endif // QCOCOANATIVEINTERFACE_H

src/plugins/platforms/cocoa/qcocoanativeinterface.mm

@@ -43,6 +43,7 @@
 #include "qcocoaglcontext.h"
 #include "qcocoawindow.h"
 #include "qcocoamenubar.h"
+#include "qmacmime.h"
 
 #include <qbytearray.h>
 #include <qwindow.h>
@@ -94,6 +95,18 @@ void *QCocoaNativeInterface::nativeResourceForWindow(const QByteArray &resourceS
     return 0;
 }
 
+QPlatformNativeInterface::NativeResourceForIntegrationFunction QCocoaNativeInterface::nativeResourceFunctionForIntegration(const QByteArray &resource)
+{
+    if (resource.toLower() == "addtomimelist")
+        return NativeResourceForIntegrationFunction(QCocoaNativeInterface::addToMimeList);
+    if (resource.toLower() == "removefrommimelist")
+        return NativeResourceForIntegrationFunction(QCocoaNativeInterface::removeFromMimeList);
+    if (resource.toLower() == "registerdraggedtypes")
+        return NativeResourceForIntegrationFunction(QCocoaNativeInterface::registerDraggedTypes);
+
+    return 0;
+}
+
 QPlatformPrinterSupport *QCocoaNativeInterface::createPlatformPrinterSupport()
 {
 #ifndef QT_NO_WIDGETS
@@ -142,4 +155,19 @@ void *QCocoaNativeInterface::nsOpenGLContextForContext(QOpenGLContext* context)
     return 0;
 }
 
+void QCocoaNativeInterface::addToMimeList(void *macPasteboardMime)
+{
+    qt_mac_addToGlobalMimeList(reinterpret_cast<QMacPasteboardMime *>(macPasteboardMime));
+}
+
+void QCocoaNativeInterface::removeFromMimeList(void *macPasteboardMime)
+{
+    qt_mac_removeFromGlobalMimeList(reinterpret_cast<QMacPasteboardMime *>(macPasteboardMime));
+}
+
+void QCocoaNativeInterface::registerDraggedTypes(const QStringList &types)
+{
+    qt_mac_registerDraggedTypes(types);
+}
+
 QT_END_NAMESPACE

src/plugins/platforms/cocoa/qmacmime.h

@@ -48,7 +48,8 @@
 
 QT_BEGIN_NAMESPACE
 
-class Q_GUI_EXPORT QMacPasteboardMime {
+// Duplicate of QMacPasteboardMime in QtMacExtras. Keep in sync!
+class QMacPasteboardMime {
     char type;
 public:
     enum QMacPasteboardMimeType { MIME_DND=0x01,
@@ -77,6 +78,11 @@ public:
     virtual int count(QMimeData *mimeData);
 };
 
+void qt_mac_addToGlobalMimeList(QMacPasteboardMime *macMime);
+void qt_mac_removeFromGlobalMimeList(QMacPasteboardMime *macMime);
+void qt_mac_registerDraggedTypes(const QStringList &types);
+const QStringList& qt_mac_enabledDraggedTypes();
+
 QT_END_NAMESPACE
 
 #endif

src/plugins/platforms/cocoa/qmacmime.mm

@@ -66,6 +66,17 @@ typedef QList<QMacPasteboardMime*> MimeList;
 Q_GLOBAL_STATIC(MimeList, globalMimeList)
 Q_GLOBAL_STATIC(QStringList, globalDraggedTypesList)
 
+void qt_mac_addToGlobalMimeList(QMacPasteboardMime *macMime)
+{
+    globalMimeList()->append(macMime);
+}
+
+void qt_mac_removeFromGlobalMimeList(QMacPasteboardMime *macMime)
+{
+    if (!QGuiApplication::closingDown())
+        globalMimeList()->removeAll(macMime);
+}
+
 /*!
     \fn void qRegisterDraggedTypes(const QStringList &types)
     \relates QMacPasteboardMime
@@ -79,17 +90,16 @@ Q_GLOBAL_STATIC(QStringList, globalDraggedTypesList)
 
    \sa QMacPasteboardMime
 */
-Q_WIDGETS_EXPORT void qRegisterDraggedTypes(const QStringList &types)
+void qt_mac_registerDraggedTypes(const QStringList &types)
 {
     (*globalDraggedTypesList()) += types;
 }
 
-const QStringList& qEnabledDraggedTypes()
+const QStringList& qt_mac_enabledDraggedTypes()
 {
     return (*globalDraggedTypesList());
 }
 
-
 /*****************************************************************************
   QDnD debug facilities
  *****************************************************************************/
@@ -155,7 +165,7 @@ CFStringRef qt_mac_mime_typeUTI = CFSTR("com.pasteboard.trolltech.marker");
 */
 QMacPasteboardMime::QMacPasteboardMime(char t) : type(t)
 {
-    globalMimeList()->append(this);
+    qt_mac_addToGlobalMimeList(this);
 }
 
 /*!
@@ -164,8 +174,7 @@ QMacPasteboardMime::QMacPasteboardMime(char t) : type(t)
 */
 QMacPasteboardMime::~QMacPasteboardMime()
 {
-    if (!QGuiApplication::closingDown())
-        globalMimeList()->removeAll(this);
+    qt_mac_removeFromGlobalMimeList(this);
 }
 
 /*!

src/plugins/platforms/cocoa/qnsview.mm

@@ -49,6 +49,7 @@
 #include "qcocoaautoreleasepool.h"
 #include "qmultitouch_mac_p.h"
 #include "qcocoadrag.h"
+#include "qmacmime.h"
 #include <qpa/qplatformintegration.h>
 
 #include <qpa/qwindowsysteminterface.h>
@@ -1106,8 +1107,7 @@ static QTouchDevice *touchDevice = 0;
 -(void)registerDragTypes
 {
     QCocoaAutoReleasePool pool;
-    // ### Custom types disabled.
-    QStringList customTypes;  // = qEnabledDraggedTypes();
+    QStringList customTypes = qt_mac_enabledDraggedTypes();
     if (currentCustomDragTypes == 0 || *currentCustomDragTypes != customTypes) {
         if (currentCustomDragTypes == 0)
             currentCustomDragTypes = new QStringList();