widget/nsFilePickerProxy.cpp
author cku <cku@mozilla.com>
Fri, 05 May 2017 17:19:43 +0800
changeset 359137 f3460d42d23cb21093146a2ace98009d581bd77a
parent 355017 272037dc7f5763e96cf7cb0e25375656f5ac769a
child 374398 6dacffdd0ed1ea53f7e2a56d1f44e2c90b959144
permissions -rw-r--r--
Bug 1351440 - Part 2. Encapsulate DrawResult and imgIContainer::FLAG_* into imgDrawingParams, and pass it to PaintSVG. r=jwatt The DrawResult return was not in fact anything to do with the success or failure of that method, but was actually passing out a very specific piece of information about the success or failure of any imagelib drawing that may not have occurred under the various PaintSVG calls. The signature of PaintSVG is changed from DrawResult PaintSVG(...., uint32 flags); to void PaintSVG(...., imgDrawingParams& aPackage); imgDrawingParams wraps DrawResult and imgIContainer::FLAG_* as a pack, pass through PaintSVG to imagelib draw calls under beneath. MozReview-Commit-ID: IOq2evUAOQF

/* -*- 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 "mozilla/dom/Directory.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/dom/IPCBlobUtils.h"

using namespace mozilla::dom;

NS_IMPL_ISUPPORTS(nsFilePickerProxy, nsIFilePicker)

nsFilePickerProxy::nsFilePickerProxy()
  : mSelectedType(0)
  , mIPCActive(false)
{
}

nsFilePickerProxy::~nsFilePickerProxy()
{
}

NS_IMETHODIMP
nsFilePickerProxy::Init(mozIDOMWindowProxy* aParent, const nsAString& aTitle,
                        int16_t aMode)
{
  TabChild* tabChild = TabChild::GetFrom(aParent);
  if (!tabChild) {
    return NS_ERROR_FAILURE;
  }

  mParent = nsPIDOMWindowOuter::From(aParent);

  mMode = aMode;

  NS_ADDREF_THIS();
  tabChild->SendPFilePickerConstructor(this, nsString(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::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;
}

NS_IMETHODIMP
nsFilePickerProxy::Show(int16_t* 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, displayDirectory, mDisplaySpecialDirectory,
           mOkButtonLabel);

  return NS_OK;
}

mozilla::ipc::IPCResult
nsFilePickerProxy::Recv__delete__(const MaybeInputData& aData,
                                  const int16_t& aResult)
{
  if (aData.type() == MaybeInputData::TInputBlobs) {
    const InfallibleTArray<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();
      }

      nsPIDOMWindowInner* inner =
        mParent ? mParent->GetCurrentInnerWindow() : nullptr;
      RefPtr<File> file = File::Create(inner, blobImpl);
      MOZ_ASSERT(file);

      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(mParent->GetCurrentInnerWindow(), 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<nsIDOMBlob> blob = mFilesOrDirectories[0].GetAsFile().get();
    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 nsISimpleEnumerator
{
public:
  NS_DECL_ISUPPORTS

  explicit
  SimpleEnumerator(const nsTArray<OwningFileOrDirectory>& aFilesOrDirectories)
    : mFilesOrDirectories(aFilesOrDirectories)
    , 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<nsIDOMBlob> blob = mFilesOrDirectories[index].GetAsFile().get();
      blob.forget(aValue);
      return NS_OK;
    }

    MOZ_ASSERT(mFilesOrDirectories[index].IsDirectory());
    RefPtr<Directory> directory = mFilesOrDirectories[index].GetAsDirectory();
    directory.forget(aValue);
    return NS_OK;
  }

private:
  ~SimpleEnumerator()
  {}

  nsTArray<mozilla::dom::OwningFileOrDirectory> mFilesOrDirectories;
  uint32_t mIndex;
};

NS_IMPL_ISUPPORTS(SimpleEnumerator, nsISimpleEnumerator)

} // 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;
  }
}