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();
}
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);
}