widget/cocoa/nsClipboard.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsClipboard_h_
   7 #define nsClipboard_h_
   8
   9 #include "nsIClipboard.h"
  10 #include "nsString.h"
  11 #include "mozilla/StaticPtr.h"
  12
  13 #import <Cocoa/Cocoa.h>
  14
  15 class nsITransferable;
  16
  17 @interface UTIHelper : NSObject
  18 + (NSString*)stringFromPboardType:(NSString*)aType;
  19 @end
  20
  21 class nsClipboard : public nsIClipboard {
  22  public:
  23   nsClipboard();
  24
  25   NS_DECL_ISUPPORTS
  26   NS_DECL_NSICLIPBOARD
  27
  28   // On macOS, cache the transferable of the current selection (chrome/content)
  29   // in the parent process. This is needed for the services menu which
  30   // requires synchronous access to the current selection.
  31   static mozilla::StaticRefPtr<nsITransferable> sSelectionCache;
  32
  33   // Helper methods, used also by nsDragService
  34   static NSDictionary* PasteboardDictFromTransferable(nsITransferable* aTransferable);
  35   // aPasteboardType is being retained and needs to be released by the caller.
  36   static bool IsStringType(const nsCString& aMIMEType, NSString** aPasteboardType);
  37   static NSString* WrapHtmlForSystemPasteboard(NSString* aString);
  38   static nsresult TransferableFromPasteboard(nsITransferable* aTransferable, NSPasteboard* pboard);
  39
  40  protected:
  41   // impelement the native clipboard behavior
  42   NS_IMETHOD SetNativeClipboardData(int32_t aWhichClipboard);
  43   NS_IMETHOD GetNativeClipboardData(nsITransferable* aTransferable, int32_t aWhichClipboard);
  44   void ClearSelectionCache();
  45   void SetSelectionCache(nsITransferable* aTransferable);
  46
  47  private:
  48   virtual ~nsClipboard();
  49   int32_t mCachedClipboard;
  50   int32_t mChangeCount;  // Set to the native change count after any modification of the clipboard.
  51
  52   bool mIgnoreEmptyNotification;
  53   nsCOMPtr<nsIClipboardOwner> mClipboardOwner;
  54   nsCOMPtr<nsITransferable> mTransferable;
  55 };
  56
  57 #endif  // nsClipboard_h_