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Minimal test - lines (555, 574)

Code

nsDragService::GetNumDropItems(uint32_t* aNumItems) {
  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;

  *aNumItems = 0;

  // first check to see if we have a number of items cached
  if (mDataItems) {
    mDataItems->GetLength(aNumItems);
    return NS_OK;
  }

  NSArray* droppedItems = [globalDragPboard pasteboardItems];
  if (droppedItems) {
    *aNumItems = [droppedItems count];
  }

  return NS_OK;

  NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
}

Minimal test - lines (577, 581)

Code

nsDragService::UpdateDragImage(nsINode* aImage, int32_t aImageX, int32_t aImageY) {
  nsBaseDragService::UpdateDragImage(aImage, aImageX, aImageY);
  mDragImageChanged = true;
  return NS_OK;
}

Minimal test - lines (57, 57)

Code

nsDragService::~nsDragService() {}

Minimal test - lines (494, 552)

Code

nsDragService::IsDataFlavorSupported(const char* aDataFlavor, bool* _retval) {
  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;

  *_retval = false;

  if (!globalDragPboard) return NS_ERROR_FAILURE;

  nsDependentCString dataFlavor(aDataFlavor);

  // first see if we have data for this in our cached transferable
  if (mDataItems) {
    uint32_t dataItemsCount;
    mDataItems->GetLength(&dataItemsCount);
    for (unsigned int i = 0; i < dataItemsCount; i++) {
      nsCOMPtr currentTransferable = do_QueryElementAt(mDataItems, i);
      if (!currentTransferable) continue;

      nsTArray flavors;
      nsresult rv = currentTransferable->FlavorsTransferableCanImport(flavors);
      if (NS_FAILED(rv)) continue;

      for (uint32_t j = 0; j < flavors.Length(); j++) {
        if (dataFlavor.Equals(flavors[j])) {
          *_retval = true;
          return NS_OK;
        }
      }
    }
  }

  const NSString* type = nil;
  bool allowFileURL = false;
  if (dataFlavor.EqualsLiteral(kFileMime)) {
    type = [UTIHelper stringFromPboardType:(NSString*)kUTTypeFileURL];
    allowFileURL = true;
  } else if (dataFlavor.EqualsLiteral(kUnicodeMime)) {
    type = [UTIHelper stringFromPboardType:NSPasteboardTypeString];
  } else if (dataFlavor.EqualsLiteral(kHTMLMime)) {
    type = [UTIHelper stringFromPboardType:NSPasteboardTypeHTML];
  } else if (dataFlavor.EqualsLiteral(kURLMime) || dataFlavor.EqualsLiteral(kURLDataMime)) {
    type = [UTIHelper stringFromPboardType:kPublicUrlPboardType];
  } else if (dataFlavor.EqualsLiteral(kURLDescriptionMime)) {
    type = [UTIHelper stringFromPboardType:kPublicUrlNamePboardType];
  } else if (dataFlavor.EqualsLiteral(kRTFMime)) {
    type = [UTIHelper stringFromPboardType:NSPasteboardTypeRTF];
  } else if (dataFlavor.EqualsLiteral(kCustomTypesMime)) {
    type = [UTIHelper stringFromPboardType:kMozCustomTypesPboardType];
  }

  NSString* availableType =
      [globalDragPboard availableTypeFromArray:[NSArray arrayWithObjects:(id)type, nil]];
  if (availableType && IsValidType(availableType, allowFileURL)) {
    *_retval = true;
  }

  return NS_OK;

  NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
}

Minimal test - lines (327, 491)

Code

nsDragService::GetData(nsITransferable* aTransferable, uint32_t aItemIndex) {
  NS_OBJC_BEGIN_TRY_BLOCK_RETURN;

  if (!aTransferable) return NS_ERROR_FAILURE;

  // get flavor list that includes all acceptable flavors (including ones obtained through
  // conversion)
  nsTArray flavors;
  nsresult rv = aTransferable->FlavorsTransferableCanImport(flavors);
  if (NS_FAILED(rv)) return NS_ERROR_FAILURE;

  // if this drag originated within Mozilla we should just use the cached data from
  // when the drag started if possible
  if (mDataItems) {
    nsCOMPtr currentTransferable = do_QueryElementAt(mDataItems, aItemIndex);
    if (currentTransferable) {
      for (uint32_t i = 0; i < flavors.Length(); i++) {
        nsCString& flavorStr = flavors[i];

        nsCOMPtr dataSupports;
        rv = currentTransferable->GetTransferData(flavorStr.get(), getter_AddRefs(dataSupports));
        if (NS_SUCCEEDED(rv)) {
          aTransferable->SetTransferData(flavorStr.get(), dataSupports);
          return NS_OK;  // maybe try to fill in more types? Is there a point?
        }
      }
    }
  }

  // now check the actual clipboard for data
  for (uint32_t i = 0; i < flavors.Length(); i++) {
    nsCString& flavorStr = flavors[i];

    MOZ_LOG(sCocoaLog, LogLevel::Info,
            ("nsDragService::GetData: looking for clipboard data of type %s\n", flavorStr.get()));

    NSArray* droppedItems = [globalDragPboard pasteboardItems];
    if (!droppedItems) {
      continue;
    }

    uint32_t itemCount = [droppedItems count];
    if (aItemIndex >= itemCount) {
      continue;
    }

    NSPasteboardItem* item = [droppedItems objectAtIndex:aItemIndex];
    if (!item) {
      continue;
    }

    if (flavorStr.EqualsLiteral(kFileMime)) {
      NSString* filePath = GetFilePath(item);
      if (!filePath) continue;

      unsigned int stringLength = [filePath length];
      unsigned int dataLength = (stringLength + 1) * sizeof(char16_t);  // in bytes
      char16_t* clipboardDataPtr = (char16_t*)malloc(dataLength);
      if (!clipboardDataPtr) return NS_ERROR_OUT_OF_MEMORY;
      [filePath getCharacters:reinterpret_cast(clipboardDataPtr)];
      clipboardDataPtr[stringLength] = 0;  // null terminate

      nsCOMPtr file;
      rv = NS_NewLocalFile(nsDependentString(clipboardDataPtr), true, getter_AddRefs(file));
      free(clipboardDataPtr);
      if (NS_FAILED(rv)) continue;

      aTransferable->SetTransferData(flavorStr.get(), file);

      break;
    } else if (flavorStr.EqualsLiteral(kCustomTypesMime)) {
      NSString* availableType =
          [item availableTypeFromArray:[NSArray arrayWithObject:kMozCustomTypesPboardType]];
      if (!availableType || !IsValidType(availableType, false)) {
        continue;
      }
      NSData* pasteboardData = [item dataForType:availableType];
      if (!pasteboardData) {
        continue;
      }

      unsigned int dataLength = [pasteboardData length];
      void* clipboardDataPtr = malloc(dataLength);
      if (!clipboardDataPtr) {
        return NS_ERROR_OUT_OF_MEMORY;
      }
      [pasteboardData getBytes:clipboardDataPtr length:dataLength];

      nsCOMPtr genericDataWrapper;
      nsPrimitiveHelpers::CreatePrimitiveForData(flavorStr, clipboardDataPtr, dataLength,
                                                 getter_AddRefs(genericDataWrapper));

      aTransferable->SetTransferData(flavorStr.get(), genericDataWrapper);
      free(clipboardDataPtr);
      break;
    }

    NSString* pString = nil;
    if (flavorStr.EqualsLiteral(kUnicodeMime)) {
      pString = GetStringForType(item, [UTIHelper stringFromPboardType:NSPasteboardTypeString]);
    } else if (flavorStr.EqualsLiteral(kHTMLMime)) {
      pString = GetStringForType(item, [UTIHelper stringFromPboardType:NSPasteboardTypeHTML]);
    } else if (flavorStr.EqualsLiteral(kURLMime)) {
      pString = GetStringForType(item, [UTIHelper stringFromPboardType:kPublicUrlPboardType]);
      if (pString) {
        NSString* title = GetTitleForURL(item);
        if (!title) {
          title = pString;
        }
        pString = [NSString stringWithFormat:@"%@\n%@", pString, title];
      }
    } else if (flavorStr.EqualsLiteral(kURLDataMime)) {
      pString = GetStringForType(item, [UTIHelper stringFromPboardType:kPublicUrlPboardType]);
    } else if (flavorStr.EqualsLiteral(kURLDescriptionMime)) {
      pString = GetTitleForURL(item);
    } else if (flavorStr.EqualsLiteral(kRTFMime)) {
      pString = GetStringForType(item, [UTIHelper stringFromPboardType:NSPasteboardTypeRTF]);
    }
    if (pString) {
      NSData* stringData;
      if (flavorStr.EqualsLiteral(kRTFMime)) {
        stringData = [pString dataUsingEncoding:NSASCIIStringEncoding];
      } else {
        stringData = [pString dataUsingEncoding:NSUnicodeStringEncoding];
      }
      unsigned int dataLength = [stringData length];
      void* clipboardDataPtr = malloc(dataLength);
      if (!clipboardDataPtr) return NS_ERROR_OUT_OF_MEMORY;
      [stringData getBytes:clipboardDataPtr length:dataLength];

      // The DOM only wants LF, so convert from MacOS line endings to DOM line endings.
      int32_t signedDataLength = dataLength;
      nsLinebreakHelpers::ConvertPlatformToDOMLinebreaks(flavorStr, &clipboardDataPtr,
                                                         &signedDataLength);
      dataLength = signedDataLength;

      // skip BOM (Byte Order Mark to distinguish little or big endian)
      char16_t* clipboardDataPtrNoBOM = (char16_t*)clipboardDataPtr;
      if ((dataLength > 2) &&
          ((clipboardDataPtrNoBOM[0] == 0xFEFF) || (clipboardDataPtrNoBOM[0] == 0xFFFE))) {
        dataLength -= sizeof(char16_t);
        clipboardDataPtrNoBOM += 1;
      }

      nsCOMPtr genericDataWrapper;
      nsPrimitiveHelpers::CreatePrimitiveForData(flavorStr, clipboardDataPtrNoBOM, dataLength,
                                                 getter_AddRefs(genericDataWrapper));
      aTransferable->SetTransferData(flavorStr.get(), genericDataWrapper);
      free(clipboardDataPtr);
      break;
    }

    // We have never supported this on Mac OS X, we should someday. Normally dragging images
    // in is accomplished with a file path drag instead of the image data itself.
    /*
    if (flavorStr.EqualsLiteral(kPNGImageMime) || flavorStr.EqualsLiteral(kJPEGImageMime) ||
        flavorStr.EqualsLiteral(kJPGImageMime) || flavorStr.EqualsLiteral(kGIFImageMime)) {

    }
    */
  }
  return NS_OK;

  NS_OBJC_END_TRY_BLOCK_RETURN(NS_ERROR_FAILURE);
}

Minimal test - lines (583, 633)

Code

void nsDragService::DragMovedWithView(NSDraggingSession* aSession, NSPoint aPoint) {
  aPoint.y = nsCocoaUtils::FlippedScreenY(aPoint.y);

  // XXX It feels like we should be using the backing scale factor at aPoint
  // rather than the initial drag view, but I've seen no ill effects of this.
  CGFloat scaleFactor = nsCocoaUtils::GetBackingScaleFactor(mNativeDragView);
  LayoutDeviceIntPoint devPoint = nsCocoaUtils::CocoaPointsToDevPixels(aPoint, scaleFactor);

  // If the image has changed, call enumerateDraggingItemsWithOptions to get
  // the item being dragged and update its image.
  if (mDragImageChanged && mNativeDragView) {
    mDragImageChanged = false;

    nsPresContext* pc = nullptr;
    nsCOMPtr content = do_QueryInterface(mImage);
    if (content) {
      pc = content->OwnerDoc()->GetPresContext();
    }

    if (pc) {
      void (^changeImageBlock)(NSDraggingItem*, NSInteger, BOOL*) =
          ^(NSDraggingItem* draggingItem, NSInteger idx, BOOL* stop) {
            // We never add more than one item right now, but check just in case.
            if (idx > 0) {
              return;
            }

            nsPoint pt = LayoutDevicePixel::ToAppUnits(
                devPoint, pc->DeviceContext()->AppUnitsPerDevPixelAtUnitFullZoom());
            CSSIntPoint screenPoint = CSSIntPoint(nsPresContext::AppUnitsToIntCSSPixels(pt.x),
                                                  nsPresContext::AppUnitsToIntCSSPixels(pt.y));

            // Create a new image; if one isn't returned don't change the current one.
            LayoutDeviceIntRect newRect;
            NSImage* image = ConstructDragImage(mSourceNode, Nothing(), screenPoint, &newRect);
            if (image) {
              NSRect draggingRect = nsCocoaUtils::GeckoRectToCocoaRectDevPix(newRect, scaleFactor);
              [draggingItem setDraggingFrame:draggingRect contents:image];
            }
          };

      [aSession enumerateDraggingItemsWithOptions:NSDraggingItemEnumerationConcurrent
                                          forView:nil
                                          classes:[NSArray arrayWithObject:[NSPasteboardItem class]]
                                    searchOptions:@{}
                                       usingBlock:changeImageBlock];
    }
  }

  DragMoved(devPoint.x, devPoint.y);
}