diff options
Diffstat (limited to 'widget/nsFilePickerProxy.cpp')
| -rw-r--r-- | widget/nsFilePickerProxy.cpp | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/widget/nsFilePickerProxy.cpp b/widget/nsFilePickerProxy.cpp new file mode 100644 index 0000000000..de735bf029 --- /dev/null +++ b/widget/nsFilePickerProxy.cpp @@ -0,0 +1,287 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nsFilePickerProxy.h" +#include "nsComponentManagerUtils.h" +#include "nsIFile.h" +#include "nsSimpleEnumerator.h" +#include "mozilla/dom/BlobImpl.h" +#include "mozilla/dom/Directory.h" +#include "mozilla/dom/File.h" +#include "mozilla/dom/BrowserChild.h" +#include "mozilla/dom/IPCBlobUtils.h" + +using namespace mozilla::dom; + +NS_IMPL_ISUPPORTS(nsFilePickerProxy, nsIFilePicker) + +nsFilePickerProxy::nsFilePickerProxy() + : mSelectedType(0), mCapture(captureNone), mIPCActive(false) {} + +nsFilePickerProxy::~nsFilePickerProxy() = default; + +NS_IMETHODIMP +nsFilePickerProxy::Init(mozIDOMWindowProxy* aParent, const nsAString& aTitle, + nsIFilePicker::Mode aMode) { + BrowserChild* browserChild = BrowserChild::GetFrom(aParent); + if (!browserChild) { + return NS_ERROR_FAILURE; + } + + mParent = nsPIDOMWindowOuter::From(aParent); + + mMode = aMode; + + browserChild->SendPFilePickerConstructor(this, aTitle, aMode); + + mIPCActive = true; + return NS_OK; +} + +void nsFilePickerProxy::InitNative(nsIWidget* aParent, + const nsAString& aTitle) {} + +NS_IMETHODIMP +nsFilePickerProxy::AppendFilter(const nsAString& aTitle, + const nsAString& aFilter) { + mFilterNames.AppendElement(aTitle); + mFilters.AppendElement(aFilter); + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::GetCapture(nsIFilePicker::CaptureTarget* aCapture) { + *aCapture = mCapture; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::SetCapture(nsIFilePicker::CaptureTarget aCapture) { + mCapture = aCapture; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::GetDefaultString(nsAString& aDefaultString) { + aDefaultString = mDefault; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::SetDefaultString(const nsAString& aDefaultString) { + mDefault = aDefaultString; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::GetDefaultExtension(nsAString& aDefaultExtension) { + aDefaultExtension = mDefaultExtension; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::SetDefaultExtension(const nsAString& aDefaultExtension) { + mDefaultExtension = aDefaultExtension; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::GetFilterIndex(int32_t* aFilterIndex) { + *aFilterIndex = mSelectedType; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::SetFilterIndex(int32_t aFilterIndex) { + mSelectedType = aFilterIndex; + return NS_OK; +} + +NS_IMETHODIMP +nsFilePickerProxy::GetFile(nsIFile** aFile) { + MOZ_ASSERT(false, "GetFile is unimplemented; use GetDomFileOrDirectory"); + return NS_ERROR_FAILURE; +} + +NS_IMETHODIMP +nsFilePickerProxy::GetFileURL(nsIURI** aFileURL) { + MOZ_ASSERT(false, "GetFileURL is unimplemented; use GetDomFileOrDirectory"); + return NS_ERROR_FAILURE; +} + +NS_IMETHODIMP +nsFilePickerProxy::GetFiles(nsISimpleEnumerator** aFiles) { + MOZ_ASSERT(false, + "GetFiles is unimplemented; use GetDomFileOrDirectoryEnumerator"); + return NS_ERROR_FAILURE; +} + +nsresult nsFilePickerProxy::Show(nsIFilePicker::ResultCode* aReturn) { + MOZ_ASSERT(false, "Show is unimplemented; use Open"); + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsFilePickerProxy::Open(nsIFilePickerShownCallback* aCallback) { + mCallback = aCallback; + + nsString displayDirectory; + if (mDisplayDirectory) { + mDisplayDirectory->GetPath(displayDirectory); + } + + if (!mIPCActive) { + return NS_ERROR_FAILURE; + } + + SendOpen(mSelectedType, mAddToRecentDocs, mDefault, mDefaultExtension, + mFilters, mFilterNames, mRawFilters, displayDirectory, + mDisplaySpecialDirectory, mOkButtonLabel, mCapture); + + return NS_OK; +} + +mozilla::ipc::IPCResult nsFilePickerProxy::Recv__delete__( + const MaybeInputData& aData, const nsIFilePicker::ResultCode& aResult) { + nsPIDOMWindowInner* inner = + mParent ? mParent->GetCurrentInnerWindow() : nullptr; + + if (NS_WARN_IF(!inner)) { + return IPC_OK(); + } + + if (aData.type() == MaybeInputData::TInputBlobs) { + const nsTArray<IPCBlob>& blobs = aData.get_InputBlobs().blobs(); + for (uint32_t i = 0; i < blobs.Length(); ++i) { + RefPtr<BlobImpl> blobImpl = IPCBlobUtils::Deserialize(blobs[i]); + NS_ENSURE_TRUE(blobImpl, IPC_OK()); + + if (!blobImpl->IsFile()) { + return IPC_OK(); + } + + RefPtr<File> file = File::Create(inner->AsGlobal(), blobImpl); + if (NS_WARN_IF(!file)) { + return IPC_OK(); + } + + OwningFileOrDirectory* element = mFilesOrDirectories.AppendElement(); + element->SetAsFile() = file; + } + } else if (aData.type() == MaybeInputData::TInputDirectory) { + nsCOMPtr<nsIFile> file; + const nsAString& path(aData.get_InputDirectory().directoryPath()); + nsresult rv = NS_NewLocalFile(path, true, getter_AddRefs(file)); + if (NS_WARN_IF(NS_FAILED(rv))) { + return IPC_OK(); + } + + RefPtr<Directory> directory = Directory::Create(inner->AsGlobal(), file); + MOZ_ASSERT(directory); + + OwningFileOrDirectory* element = mFilesOrDirectories.AppendElement(); + element->SetAsDirectory() = directory; + } + + if (mCallback) { + mCallback->Done(aResult); + mCallback = nullptr; + } + + return IPC_OK(); +} + +NS_IMETHODIMP +nsFilePickerProxy::GetDomFileOrDirectory(nsISupports** aValue) { + *aValue = nullptr; + if (mFilesOrDirectories.IsEmpty()) { + return NS_OK; + } + + MOZ_ASSERT(mFilesOrDirectories.Length() == 1); + + if (mFilesOrDirectories[0].IsFile()) { + nsCOMPtr<nsISupports> blob = ToSupports(mFilesOrDirectories[0].GetAsFile()); + blob.forget(aValue); + return NS_OK; + } + + MOZ_ASSERT(mFilesOrDirectories[0].IsDirectory()); + RefPtr<Directory> directory = mFilesOrDirectories[0].GetAsDirectory(); + directory.forget(aValue); + return NS_OK; +} + +namespace { + +class SimpleEnumerator final : public nsSimpleEnumerator { + public: + explicit SimpleEnumerator( + const nsTArray<OwningFileOrDirectory>& aFilesOrDirectories) + : mFilesOrDirectories(aFilesOrDirectories.Clone()), mIndex(0) {} + + NS_IMETHOD + HasMoreElements(bool* aRetvalue) override { + MOZ_ASSERT(aRetvalue); + *aRetvalue = mIndex < mFilesOrDirectories.Length(); + return NS_OK; + } + + NS_IMETHOD + GetNext(nsISupports** aValue) override { + NS_ENSURE_TRUE(mIndex < mFilesOrDirectories.Length(), NS_ERROR_FAILURE); + + uint32_t index = mIndex++; + + if (mFilesOrDirectories[index].IsFile()) { + nsCOMPtr<nsISupports> blob = + ToSupports(mFilesOrDirectories[index].GetAsFile()); + blob.forget(aValue); + return NS_OK; + } + + MOZ_ASSERT(mFilesOrDirectories[index].IsDirectory()); + RefPtr<Directory> directory = mFilesOrDirectories[index].GetAsDirectory(); + directory.forget(aValue); + return NS_OK; + } + + private: + nsTArray<mozilla::dom::OwningFileOrDirectory> mFilesOrDirectories; + uint32_t mIndex; +}; + +} // namespace + +NS_IMETHODIMP +nsFilePickerProxy::GetDomFileOrDirectoryEnumerator( + nsISimpleEnumerator** aDomfiles) { + RefPtr<SimpleEnumerator> enumerator = + new SimpleEnumerator(mFilesOrDirectories); + enumerator.forget(aDomfiles); + return NS_OK; +} + +void nsFilePickerProxy::ActorDestroy(ActorDestroyReason aWhy) { + mIPCActive = false; + + if (mCallback) { + mCallback->Done(nsIFilePicker::returnCancel); + mCallback = nullptr; + } +} + +nsresult nsFilePickerProxy::ResolveSpecialDirectory( + const nsAString& aSpecialDirectory) { + MOZ_ASSERT(XRE_IsContentProcess()); + // Resolving the special-directory name to a path in both the child and parent + // processes is redundant -- and sandboxing may prevent us from doing so in + // the child process, anyway. (See bugs 1357846 and 1838244.) + // + // Unfortunately we can't easily verify that `aSpecialDirectory` is usable or + // even meaningful here, so we just accept anything. + return NS_OK; +} |