Exemple #1
0
already_AddRefed<nsISupportsArray>
DataTransfer::GetTransferables(nsIDOMNode* aDragTarget)
{
  MOZ_ASSERT(aDragTarget);

  nsCOMPtr<nsISupportsArray> transArray =
    do_CreateInstance("@mozilla.org/supports-array;1");
  if (!transArray) {
    return nullptr;
  }
    

  nsCOMPtr<nsINode> dragNode = do_QueryInterface(aDragTarget);
  if (!dragNode) {
    return nullptr;
  }
    
  nsIDocument* doc = dragNode->GetCurrentDoc();
  if (!doc) {
    return nullptr;
  }
    
  nsILoadContext* loadContext = doc->GetLoadContext();

  uint32_t count = mItems.Length();
  for (uint32_t i = 0; i < count; i++) {
    nsCOMPtr<nsITransferable> transferable = GetTransferable(i, loadContext);
    if (transferable) {
      transArray->AppendElement(transferable);
    }
  }

  return transArray.forget();
}
already_AddRefed<nsIArray>
DataTransfer::GetTransferables(nsILoadContext* aLoadContext)
{
  nsCOMPtr<nsIMutableArray> transArray = nsArray::Create();
  if (!transArray) {
    return nullptr;
  }

  uint32_t count = MozItemCount();
  for (uint32_t i = 0; i < count; i++) {
    nsCOMPtr<nsITransferable> transferable = GetTransferable(i, aLoadContext);
    if (transferable) {
      transArray->AppendElement(transferable, /*weak =*/ false);
    }
  }

  return transArray.forget();
}
already_AddRefed<nsISupportsArray>
DataTransfer::GetTransferables(nsILoadContext* aLoadContext)
{

  nsCOMPtr<nsISupportsArray> transArray =
    do_CreateInstance("@mozilla.org/supports-array;1");
  if (!transArray) {
    return nullptr;
  }

  uint32_t count = mItems.Length();
  for (uint32_t i = 0; i < count; i++) {
    nsCOMPtr<nsITransferable> transferable = GetTransferable(i, aLoadContext);
    if (transferable) {
      transArray->AppendElement(transferable);
    }
  }

  return transArray.forget();
}
Exemple #4
0
void
nsClipboard::SelectionGetEvent (GtkWidget        *aWidget,
                                GtkSelectionData *aSelectionData,
                                guint             aTime)
{
    // Someone has asked us to hand them something.  The first thing
    // that we want to do is see if that something includes text.  If
    // it does, try to give it text/unicode after converting it to
    // utf-8.

    PRInt32 whichClipboard;

    // which clipboard?
    if (aSelectionData->selection == GDK_SELECTION_PRIMARY)
        whichClipboard = kSelectionClipboard;
    else if (aSelectionData->selection == GDK_SELECTION_CLIPBOARD)
        whichClipboard = kGlobalClipboard;
    else
        return; // THAT AINT NO CLIPBOARD I EVER HEARD OF

    nsCOMPtr<nsITransferable> trans = GetTransferable(whichClipboard);

    nsresult rv;
    nsCOMPtr<nsISupports> item;
    PRUint32 len;

    // Check to see if the selection data includes any of the string
    // types that we support.
    if (aSelectionData->target == gdk_atom_intern ("STRING", FALSE) ||
            aSelectionData->target == gdk_atom_intern ("TEXT", FALSE) ||
            aSelectionData->target == gdk_atom_intern ("COMPOUND_TEXT", FALSE) ||
            aSelectionData->target == gdk_atom_intern ("UTF8_STRING", FALSE)) {
        // Try to convert our internal type into a text string.  Get
        // the transferable for this clipboard and try to get the
        // text/unicode type for it.
        rv = trans->GetTransferData("text/unicode", getter_AddRefs(item),
                                    &len);
        if (!item || NS_FAILED(rv))
            return;

        nsCOMPtr<nsISupportsString> wideString;
        wideString = do_QueryInterface(item);
        if (!wideString)
            return;

        nsAutoString ucs2string;
        wideString->GetData(ucs2string);
        char *utf8string = ToNewUTF8String(ucs2string);
        if (!utf8string)
            return;

        gtk_selection_data_set_text (aSelectionData, utf8string,
                                     strlen(utf8string));

        nsMemory::Free(utf8string);
        return;
    }

    // Try to match up the selection data target to something our
    // transferable provides.
    gchar *target_name = gdk_atom_name(aSelectionData->target);
    if (!target_name)
        return;

    rv = trans->GetTransferData(target_name, getter_AddRefs(item), &len);
    // nothing found?
    if (!item || NS_FAILED(rv)) {
        g_free(target_name);
        return;
    }

    void *primitive_data = nsnull;
    nsPrimitiveHelpers::CreateDataFromPrimitive(target_name, item,
            &primitive_data, len);

    if (primitive_data) {
        // Check to see if the selection data is text/html
        if (aSelectionData->target == gdk_atom_intern (kHTMLMime, FALSE)) {
            /*
             * "text/html" can be encoded UCS2. It is recommended that
             * documents transmitted as UCS2 always begin with a ZERO-WIDTH
             * NON-BREAKING SPACE character (hexadecimal FEFF, also called
             * Byte Order Mark (BOM)). Adding BOM can help other app to
             * detect mozilla use UCS2 encoding when copy-paste.
             */
            guchar *buffer = (guchar *)
                             nsMemory::Alloc((len * sizeof(guchar)) + sizeof(PRUnichar));
            if (!buffer)
                return;
            PRUnichar prefix = 0xFEFF;
            memcpy(buffer, &prefix, sizeof(prefix));
            memcpy(buffer + sizeof(prefix), primitive_data, len);
            nsMemory::Free((guchar *)primitive_data);
            primitive_data = (guchar *)buffer;
            len += sizeof(prefix);
        }

        gtk_selection_data_set(aSelectionData, aSelectionData->target,
                               8, /* 8 bits in a unit */
                               (const guchar *)primitive_data, len);
        nsMemory::Free(primitive_data);
    }

    g_free(target_name);

}
void
nsClipboard::SelectionGetEvent(GtkClipboard     *aClipboard,
                               GtkSelectionData *aSelectionData)
{
    // Someone has asked us to hand them something.  The first thing
    // that we want to do is see if that something includes text.  If
    // it does, try to give it text/unicode after converting it to
    // utf-8.

    PRInt32 whichClipboard;

    // which clipboard?
    if (aSelectionData->selection == GDK_SELECTION_PRIMARY)
        whichClipboard = kSelectionClipboard;
    else if (aSelectionData->selection == GDK_SELECTION_CLIPBOARD)
        whichClipboard = kGlobalClipboard;
    else
        return; // THAT AIN'T NO CLIPBOARD I EVER HEARD OF

    nsCOMPtr<nsITransferable> trans = GetTransferable(whichClipboard);
    if (!trans) {
      // We have nothing to serve
#ifdef DEBUG_CLIPBOARD
      printf("nsClipboard::SelectionGetEvent() - %s clipboard is empty!\n",
             whichClipboard == kSelectionClipboard ? "Selection" : "Global");
#endif
      return;
    }

    nsresult rv;
    nsCOMPtr<nsISupports> item;
    PRUint32 len;

    // Check to see if the selection data includes any of the string
    // types that we support.
    if (aSelectionData->target == gdk_atom_intern ("STRING", FALSE) ||
        aSelectionData->target == gdk_atom_intern ("TEXT", FALSE) ||
        aSelectionData->target == gdk_atom_intern ("COMPOUND_TEXT", FALSE) ||
        aSelectionData->target == gdk_atom_intern ("UTF8_STRING", FALSE)) {
        // Try to convert our internal type into a text string.  Get
        // the transferable for this clipboard and try to get the
        // text/unicode type for it.
        rv = trans->GetTransferData("text/unicode", getter_AddRefs(item),
                                    &len);
        if (!item || NS_FAILED(rv))
            return;
        
        nsCOMPtr<nsISupportsString> wideString;
        wideString = do_QueryInterface(item);
        if (!wideString)
            return;

        nsAutoString ucs2string;
        wideString->GetData(ucs2string);
        char *utf8string = ToNewUTF8String(ucs2string);
        if (!utf8string)
            return;
        
        gtk_selection_data_set_text (aSelectionData, utf8string,
                                     strlen(utf8string));

        nsMemory::Free(utf8string);
        return;
    }

    // Check to see if the selection data is an image type
    if (gtk_targets_include_image(&aSelectionData->target, 1, TRUE)) {
        // Look through our transfer data for the image
        static const char* const imageMimeTypes[] = {
            kNativeImageMime, kPNGImageMime, kJPEGImageMime, kGIFImageMime };
        nsCOMPtr<nsISupports> item;
        PRUint32 len;
        nsCOMPtr<nsISupportsInterfacePointer> ptrPrimitive;
        for (PRUint32 i = 0; !ptrPrimitive && i < NS_ARRAY_LENGTH(imageMimeTypes); i++) {
            rv = trans->GetTransferData(imageMimeTypes[i], getter_AddRefs(item), &len);
            ptrPrimitive = do_QueryInterface(item);
        }
        if (!ptrPrimitive)
            return;

        nsCOMPtr<nsISupports> primitiveData;
        ptrPrimitive->GetData(getter_AddRefs(primitiveData));
        nsCOMPtr<imgIContainer> image(do_QueryInterface(primitiveData));
        if (!image) // Not getting an image for an image mime type!?
            return;

        GdkPixbuf* pixbuf = nsImageToPixbuf::ImageToPixbuf(image);
        if (!pixbuf)
            return;

        gtk_selection_data_set_pixbuf(aSelectionData, pixbuf);
        g_object_unref(pixbuf);
        return;
    }

    // Try to match up the selection data target to something our
    // transferable provides.
    gchar *target_name = gdk_atom_name(aSelectionData->target);
    if (!target_name)
        return;

    rv = trans->GetTransferData(target_name, getter_AddRefs(item), &len);
    // nothing found?
    if (!item || NS_FAILED(rv)) {
        g_free(target_name);
        return;
    }

    void *primitive_data = nsnull;
    nsPrimitiveHelpers::CreateDataFromPrimitive(target_name, item,
                                                &primitive_data, len);

    if (primitive_data) {
        // Check to see if the selection data is text/html
        if (aSelectionData->target == gdk_atom_intern (kHTMLMime, FALSE)) {
            /*
             * "text/html" can be encoded UCS2. It is recommended that
             * documents transmitted as UCS2 always begin with a ZERO-WIDTH
             * NON-BREAKING SPACE character (hexadecimal FEFF, also called
             * Byte Order Mark (BOM)). Adding BOM can help other app to
             * detect mozilla use UCS2 encoding when copy-paste.
             */
            guchar *buffer = (guchar *)
                    nsMemory::Alloc((len * sizeof(guchar)) + sizeof(PRUnichar));
            if (!buffer)
                return;
            PRUnichar prefix = 0xFEFF;
            memcpy(buffer, &prefix, sizeof(prefix));
            memcpy(buffer + sizeof(prefix), primitive_data, len);
            nsMemory::Free((guchar *)primitive_data);
            primitive_data = (guchar *)buffer;
            len += sizeof(prefix);
        }
  
        gtk_selection_data_set(aSelectionData, aSelectionData->target,
                               8, /* 8 bits in a unit */
                               (const guchar *)primitive_data, len);
        nsMemory::Free(primitive_data);
    }

    g_free(target_name);
                           
}