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Fixing bug 503598. Adding support for drag n' drop funcitonality for local files. r=enndeakin@gmail.com, sr=mrbkap@gmail.com/jonas@sicking.cc

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--HG--
extra : rebase_source : 66d93e71d30ea18e045f95f7f94951c02739edd9
This commit is contained in:
Matin Movassate 2009-07-30 14:02:08 -07:00
parent 9fcfc548de
commit a6b371d7e0
3 changed files with 64 additions and 3 deletions
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49
content/events/src/nsDOMDataTransfer.cpp
View File

@ -38,7 +38,6 @@
#include "nsDOMDataTransfer.h"
#include "prlog.h"
#include "nsAutoPtr.h"
#include "nsString.h"
#include "nsIServiceManager.h"
#include "nsIVariant.h"
@ -219,6 +218,52 @@ nsDOMDataTransfer::GetMozUserCancelled(PRBool* aUserCancelled)
return NS_OK;
}
NS_IMETHODIMP
nsDOMDataTransfer::GetFiles(nsIDOMFileList** aFileList)
{
*aFileList = nsnull;
if (mEventType != NS_DRAGDROP_DROP && mEventType != NS_DRAGDROP_DRAGDROP)
return NS_OK;
if (!mFiles) {
mFiles = new nsDOMFileList();
NS_ENSURE_TRUE(mFiles, NS_ERROR_OUT_OF_MEMORY);
PRUint32 count = mItems.Length();
for (PRUint32 i = 0; i < count; i++) {
nsCOMPtr<nsIVariant> variant;
nsresult rv = MozGetDataAt(NS_ConvertUTF8toUTF16(kFileMime), i, getter_AddRefs(variant));
NS_ENSURE_SUCCESS(rv, rv);
if (!variant)
continue;
nsCOMPtr<nsISupports> supports;
rv = variant->GetAsISupports(getter_AddRefs(supports));
if (NS_FAILED(rv))
continue;
nsCOMPtr<nsIFile> file = do_QueryInterface(supports);
if (!file)
continue;
nsRefPtr<nsDOMFile> domFile = new nsDOMFile(file);
NS_ENSURE_TRUE(domFile, NS_ERROR_OUT_OF_MEMORY);
if (!mFiles->Append(domFile))
return NS_ERROR_FAILURE;
}
}
*aFileList = mFiles;
NS_ADDREF(*aFileList);
return NS_OK;
}
NS_IMETHODIMP
nsDOMDataTransfer::GetTypes(nsIDOMDOMStringList** aTypes)
{
@ -407,7 +452,7 @@ nsDOMDataTransfer::MozSetDataAt(const nsAString& aFormat,
// XXX perhaps this should also limit any non-string type as well
if ((aFormat.EqualsLiteral("application/x-moz-file-promise") ||
aFormat.EqualsLiteral("application/x-moz-file")) &&
!nsContentUtils::IsCallerChrome()) {
!nsContentUtils::IsCallerTrustedForCapability("UniversalXPConnect")) {
return NS_ERROR_DOM_SECURITY_ERR;
}

8
content/events/src/nsDOMDataTransfer.h
View File

@ -47,6 +47,11 @@
#include "nsIDOMElement.h"
#include "nsCycleCollectionParticipant.h"
#include "nsAutoPtr.h"
#include "nsIFile.h"
#include "nsILocalFile.h"
#include "nsDOMFile.h"
class nsITransferable;
/**
@ -185,6 +190,9 @@ protected:
// array of items, each containing an array of format->data pairs
nsTArray<nsTArray<TransferItem> > mItems;
// array of files, containing only the files present in the dataTransfer
nsRefPtr<nsDOMFileList> mFiles;
// the target of the drag. The drag and dragend events will fire at this.
nsCOMPtr<nsIDOMElement> mDragTarget;

10
dom/interfaces/events/nsIDOMDataTransfer.idl
View File

@ -38,8 +38,9 @@
#include "domstubs.idl"
interface nsIVariant;
interface nsIDOMFileList;
[scriptable, uuid(E4970BA1-9567-455C-8B4E-4607D7E741BB)]
[scriptable, uuid(34042440-60A8-4992-AE5C-798E69148955)]
interface nsIDOMDataTransfer : nsISupports
{
/**
@ -90,6 +91,13 @@ interface nsIDOMDataTransfer : nsISupports
*/
attribute DOMString effectAllowed;
/**
* Holds a list of all the local files available on this data transfer.
* A dataTransfer containing no files will return an empty list, and an
* invalid index access on the resulting file list will return null.
*/
readonly attribute nsIDOMFileList files;
/**
* Holds a list of the format types of the data that is stored for the first
* item, in the same order the data was added. An empty list will be