widget/nsFilePickerProxy.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  *
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "nsFilePickerProxy.h"
   8 #include "nsComponentManagerUtils.h"
   9 #include "nsIFile.h"
  10 #include "nsSimpleEnumerator.h"
  11 #include "mozilla/dom/BlobImpl.h"
  12 #include "mozilla/dom/Directory.h"
  13 #include "mozilla/dom/File.h"
  14 #include "mozilla/dom/BrowserChild.h"
  15 #include "mozilla/dom/IPCBlobUtils.h"
  16
  17 using namespace mozilla::dom;
  18
  19 NS_IMPL_ISUPPORTS(nsFilePickerProxy, nsIFilePicker)
  20
  21 nsFilePickerProxy::nsFilePickerProxy()
  22     : mSelectedType(0), mCapture(captureNone), mIPCActive(false) {}
  23
  24 nsFilePickerProxy::~nsFilePickerProxy() = default;
  25
  26 NS_IMETHODIMP
  27 nsFilePickerProxy::Init(mozIDOMWindowProxy* aParent, const nsAString& aTitle,
  28                         int16_t aMode) {
  29   BrowserChild* browserChild = BrowserChild::GetFrom(aParent);
  30   if (!browserChild) {
  31     return NS_ERROR_FAILURE;
  32   }
  33
  34   mParent = nsPIDOMWindowOuter::From(aParent);
  35
  36   mMode = aMode;
  37
  38   NS_ADDREF_THIS();
  39   browserChild->SendPFilePickerConstructor(this, nsString(aTitle), aMode);
  40
  41   mIPCActive = true;
  42   return NS_OK;
  43 }
  44
  45 void nsFilePickerProxy::InitNative(nsIWidget* aParent,
  46                                    const nsAString& aTitle) {}
  47
  48 NS_IMETHODIMP
  49 nsFilePickerProxy::AppendFilter(const nsAString& aTitle,
  50                                 const nsAString& aFilter) {
  51   mFilterNames.AppendElement(aTitle);
  52   mFilters.AppendElement(aFilter);
  53   return NS_OK;
  54 }
  55
  56 NS_IMETHODIMP
  57 nsFilePickerProxy::GetCapture(int16_t* aCapture) {
  58   *aCapture = mCapture;
  59   return NS_OK;
  60 }
  61
  62 NS_IMETHODIMP
  63 nsFilePickerProxy::SetCapture(int16_t aCapture) {
  64   mCapture = aCapture;
  65   return NS_OK;
  66 }
  67
  68 NS_IMETHODIMP
  69 nsFilePickerProxy::GetDefaultString(nsAString& aDefaultString) {
  70   aDefaultString = mDefault;
  71   return NS_OK;
  72 }
  73
  74 NS_IMETHODIMP
  75 nsFilePickerProxy::SetDefaultString(const nsAString& aDefaultString) {
  76   mDefault = aDefaultString;
  77   return NS_OK;
  78 }
  79
  80 NS_IMETHODIMP
  81 nsFilePickerProxy::GetDefaultExtension(nsAString& aDefaultExtension) {
  82   aDefaultExtension = mDefaultExtension;
  83   return NS_OK;
  84 }
  85
  86 NS_IMETHODIMP
  87 nsFilePickerProxy::SetDefaultExtension(const nsAString& aDefaultExtension) {
  88   mDefaultExtension = aDefaultExtension;
  89   return NS_OK;
  90 }
  91
  92 NS_IMETHODIMP
  93 nsFilePickerProxy::GetFilterIndex(int32_t* aFilterIndex) {
  94   *aFilterIndex = mSelectedType;
  95   return NS_OK;
  96 }
  97
  98 NS_IMETHODIMP
  99 nsFilePickerProxy::SetFilterIndex(int32_t aFilterIndex) {
 100   mSelectedType = aFilterIndex;
 101   return NS_OK;
 102 }
 103
 104 NS_IMETHODIMP
 105 nsFilePickerProxy::GetFile(nsIFile** aFile) {
 106   MOZ_ASSERT(false, "GetFile is unimplemented; use GetDomFileOrDirectory");
 107   return NS_ERROR_FAILURE;
 108 }
 109
 110 NS_IMETHODIMP
 111 nsFilePickerProxy::GetFileURL(nsIURI** aFileURL) {
 112   MOZ_ASSERT(false, "GetFileURL is unimplemented; use GetDomFileOrDirectory");
 113   return NS_ERROR_FAILURE;
 114 }
 115
 116 NS_IMETHODIMP
 117 nsFilePickerProxy::GetFiles(nsISimpleEnumerator** aFiles) {
 118   MOZ_ASSERT(false,
 119              "GetFiles is unimplemented; use GetDomFileOrDirectoryEnumerator");
 120   return NS_ERROR_FAILURE;
 121 }
 122
 123 nsresult nsFilePickerProxy::Show(int16_t* aReturn) {
 124   MOZ_ASSERT(false, "Show is unimplemented; use Open");
 125   return NS_ERROR_NOT_IMPLEMENTED;
 126 }
 127
 128 NS_IMETHODIMP
 129 nsFilePickerProxy::Open(nsIFilePickerShownCallback* aCallback) {
 130   mCallback = aCallback;
 131
 132   nsString displayDirectory;
 133   if (mDisplayDirectory) {
 134     mDisplayDirectory->GetPath(displayDirectory);
 135   }
 136
 137   if (!mIPCActive) {
 138     return NS_ERROR_FAILURE;
 139   }
 140
 141   SendOpen(mSelectedType, mAddToRecentDocs, mDefault, mDefaultExtension,
 142            mFilters, mFilterNames, mRawFilters, displayDirectory,
 143            mDisplaySpecialDirectory, mOkButtonLabel, mCapture);
 144
 145   return NS_OK;
 146 }
 147
 148 mozilla::ipc::IPCResult nsFilePickerProxy::Recv__delete__(
 149     const MaybeInputData& aData, const int16_t& aResult) {
 150   nsPIDOMWindowInner* inner =
 151       mParent ? mParent->GetCurrentInnerWindow() : nullptr;
 152
 153   if (NS_WARN_IF(!inner)) {
 154     return IPC_OK();
 155   }
 156
 157   if (aData.type() == MaybeInputData::TInputBlobs) {
 158     const nsTArray<IPCBlob>& blobs = aData.get_InputBlobs().blobs();
 159     for (uint32_t i = 0; i < blobs.Length(); ++i) {
 160       RefPtr<BlobImpl> blobImpl = IPCBlobUtils::Deserialize(blobs[i]);
 161       NS_ENSURE_TRUE(blobImpl, IPC_OK());
 162
 163       if (!blobImpl->IsFile()) {
 164         return IPC_OK();
 165       }
 166
 167       RefPtr<File> file = File::Create(inner->AsGlobal(), blobImpl);
 168       if (NS_WARN_IF(!file)) {
 169         return IPC_OK();
 170       }
 171
 172       OwningFileOrDirectory* element = mFilesOrDirectories.AppendElement();
 173       element->SetAsFile() = file;
 174     }
 175   } else if (aData.type() == MaybeInputData::TInputDirectory) {
 176     nsCOMPtr<nsIFile> file;
 177     const nsAString& path(aData.get_InputDirectory().directoryPath());
 178     nsresult rv = NS_NewLocalFile(path, true, getter_AddRefs(file));
 179     if (NS_WARN_IF(NS_FAILED(rv))) {
 180       return IPC_OK();
 181     }
 182
 183     RefPtr<Directory> directory = Directory::Create(inner->AsGlobal(), file);
 184     MOZ_ASSERT(directory);
 185
 186     OwningFileOrDirectory* element = mFilesOrDirectories.AppendElement();
 187     element->SetAsDirectory() = directory;
 188   }
 189
 190   if (mCallback) {
 191     mCallback->Done(aResult);
 192     mCallback = nullptr;
 193   }
 194
 195   return IPC_OK();
 196 }
 197
 198 NS_IMETHODIMP
 199 nsFilePickerProxy::GetDomFileOrDirectory(nsISupports** aValue) {
 200   *aValue = nullptr;
 201   if (mFilesOrDirectories.IsEmpty()) {
 202     return NS_OK;
 203   }
 204
 205   MOZ_ASSERT(mFilesOrDirectories.Length() == 1);
 206
 207   if (mFilesOrDirectories[0].IsFile()) {
 208     nsCOMPtr<nsISupports> blob = ToSupports(mFilesOrDirectories[0].GetAsFile());
 209     blob.forget(aValue);
 210     return NS_OK;
 211   }
 212
 213   MOZ_ASSERT(mFilesOrDirectories[0].IsDirectory());
 214   RefPtr<Directory> directory = mFilesOrDirectories[0].GetAsDirectory();
 215   directory.forget(aValue);
 216   return NS_OK;
 217 }
 218
 219 namespace {
 220
 221 class SimpleEnumerator final : public nsSimpleEnumerator {
 222  public:
 223   explicit SimpleEnumerator(
 224       const nsTArray<OwningFileOrDirectory>& aFilesOrDirectories)
 225       : mFilesOrDirectories(aFilesOrDirectories.Clone()), mIndex(0) {}
 226
 227   NS_IMETHOD
 228   HasMoreElements(bool* aRetvalue) override {
 229     MOZ_ASSERT(aRetvalue);
 230     *aRetvalue = mIndex < mFilesOrDirectories.Length();
 231     return NS_OK;
 232   }
 233
 234   NS_IMETHOD
 235   GetNext(nsISupports** aValue) override {
 236     NS_ENSURE_TRUE(mIndex < mFilesOrDirectories.Length(), NS_ERROR_FAILURE);
 237
 238     uint32_t index = mIndex++;
 239
 240     if (mFilesOrDirectories[index].IsFile()) {
 241       nsCOMPtr<nsISupports> blob =
 242           ToSupports(mFilesOrDirectories[index].GetAsFile());
 243       blob.forget(aValue);
 244       return NS_OK;
 245     }
 246
 247     MOZ_ASSERT(mFilesOrDirectories[index].IsDirectory());
 248     RefPtr<Directory> directory = mFilesOrDirectories[index].GetAsDirectory();
 249     directory.forget(aValue);
 250     return NS_OK;
 251   }
 252
 253  private:
 254   nsTArray<mozilla::dom::OwningFileOrDirectory> mFilesOrDirectories;
 255   uint32_t mIndex;
 256 };
 257
 258 }  // namespace
 259
 260 NS_IMETHODIMP
 261 nsFilePickerProxy::GetDomFileOrDirectoryEnumerator(
 262     nsISimpleEnumerator** aDomfiles) {
 263   RefPtr<SimpleEnumerator> enumerator =
 264       new SimpleEnumerator(mFilesOrDirectories);
 265   enumerator.forget(aDomfiles);
 266   return NS_OK;
 267 }
 268
 269 void nsFilePickerProxy::ActorDestroy(ActorDestroyReason aWhy) {
 270   mIPCActive = false;
 271
 272   if (mCallback) {
 273     mCallback->Done(nsIFilePicker::returnCancel);
 274     mCallback = nullptr;
 275   }
 276 }