Reland of move remote tree host and some related input and metro_driver code

win8/metro_driver/file_picker.cc

Index: win8/metro_driver/file_picker.cc
diff --git a/win8/metro_driver/file_picker.cc b/win8/metro_driver/file_picker.cc
deleted file mode 100644
index 708b338c1c57cadeda3c99219f3849596a14dde1..0000000000000000000000000000000000000000
--- a/win8/metro_driver/file_picker.cc
+++ /dev/null
@@ -1,622 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "stdafx.h"
-#include "win8/metro_driver/file_picker.h"
-
-#include <stddef.h>
-#include <stdint.h>
-#include <windows.storage.pickers.h>
-
-#include "base/bind.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/message_loop/message_loop.h"
-#include "base/strings/string_util.h"
-#include "base/synchronization/waitable_event.h"
-#include "base/win/metro.h"
-#include "base/win/scoped_comptr.h"
-#include "win8/metro_driver/chrome_app_view.h"
-#include "win8/metro_driver/winrt_utils.h"
-
-namespace {
-
-namespace winstorage = ABI::Windows::Storage;
-typedef winfoundtn::Collections::IVector<HSTRING> StringVectorItf;
-
-// TODO(siggi): Complete this implementation and move it to a common place.
-class StringVectorImpl : public mswr::RuntimeClass<StringVectorItf> {
- public:
-  ~StringVectorImpl() {
-    std::for_each(strings_.begin(), strings_.end(), ::WindowsDeleteString);
-  }
-
-  HRESULT RuntimeClassInitialize(const std::vector<base::string16>& list) {
-    for (size_t i = 0; i < list.size(); ++i)
-      strings_.push_back(MakeHString(list[i]));
-
-    return S_OK;
-  }
-
-  // IVector<HSTRING> implementation.
-  STDMETHOD(GetAt)(unsigned index, HSTRING* item) {
-    if (index >= strings_.size())
-      return E_INVALIDARG;
-
-    return ::WindowsDuplicateString(strings_[index], item);
-  }
-  STDMETHOD(get_Size)(unsigned *size) {
-    if (strings_.size() > UINT_MAX)
-      return E_UNEXPECTED;
-    *size = static_cast<unsigned>(strings_.size());
-    return S_OK;
-  }
-  STDMETHOD(GetView)(winfoundtn::Collections::IVectorView<HSTRING> **view) {
-    return E_NOTIMPL;
-  }
-  STDMETHOD(IndexOf)(HSTRING value, unsigned *index, boolean *found) {
-    return E_NOTIMPL;
-  }
-
-  // write methods
-  STDMETHOD(SetAt)(unsigned index, HSTRING item) {
-    return E_NOTIMPL;
-  }
-  STDMETHOD(InsertAt)(unsigned index, HSTRING item) {
-    return E_NOTIMPL;
-  }
-  STDMETHOD(RemoveAt)(unsigned index) {
-    return E_NOTIMPL;
-  }
-  STDMETHOD(Append)(HSTRING item) {
-    return E_NOTIMPL;
-  }
-  STDMETHOD(RemoveAtEnd)() {
-    return E_NOTIMPL;
-  }
-  STDMETHOD(Clear)() {
-    return E_NOTIMPL;
-  }
-
- private:
-  std::vector<HSTRING> strings_;
-};
-
-class FilePickerSessionBase {
- public:
-  // Creates a file picker for open_file_name.
-  explicit FilePickerSessionBase(OPENFILENAME* open_file_name);
-
-  // Runs the picker, returns true on success.
-  bool Run();
-
- protected:
-  // Creates, configures and starts a file picker.
-  // If the HRESULT returned is a failure code the file picker has not started,
-  // so no callbacks should be expected.
-  virtual HRESULT StartFilePicker() = 0;
-
-  // The parameters to our picker.
-  OPENFILENAME* open_file_name_;
-  // The event Run waits on.
-  base::WaitableEvent event_;
-  // True iff a file picker has successfully finished.
-  bool success_;
-
- private:
-  // Initiate a file picker, must be called on the metro dispatcher's thread.
-  void DoFilePicker();
-
-  DISALLOW_COPY_AND_ASSIGN(FilePickerSessionBase);
-};
-
-class OpenFilePickerSession : public FilePickerSessionBase {
- public:
-  explicit OpenFilePickerSession(OPENFILENAME* open_file_name);
-
- private:
-  HRESULT StartFilePicker() override;
-
-  typedef winfoundtn::IAsyncOperation<winstorage::StorageFile*>
-      SingleFileAsyncOp;
-  typedef winfoundtn::Collections::IVectorView<
-      winstorage::StorageFile*> StorageFileVectorCollection;
-  typedef winfoundtn::IAsyncOperation<StorageFileVectorCollection*>
-      MultiFileAsyncOp;
-
-  // Called asynchronously when a single file picker is done.
-  HRESULT SinglePickerDone(SingleFileAsyncOp* async, AsyncStatus status);
-
-  // Called asynchronously when a multi file picker is done.
-  HRESULT MultiPickerDone(MultiFileAsyncOp* async, AsyncStatus status);
-
-  // Composes a multi-file result string suitable for returning to a
-  // from a storage file collection.
-  static HRESULT ComposeMultiFileResult(StorageFileVectorCollection* files,
-                                        base::string16* result);
- private:
-  DISALLOW_COPY_AND_ASSIGN(OpenFilePickerSession);
-};
-
-class SaveFilePickerSession : public FilePickerSessionBase {
- public:
-  explicit SaveFilePickerSession(OPENFILENAME* open_file_name);
-
- private:
-  HRESULT StartFilePicker() override;
-
-  typedef winfoundtn::IAsyncOperation<winstorage::StorageFile*>
-      SaveFileAsyncOp;
-
-  // Called asynchronously when the save file picker is done.
-  HRESULT FilePickerDone(SaveFileAsyncOp* async, AsyncStatus status);
-};
-
-FilePickerSessionBase::FilePickerSessionBase(OPENFILENAME* open_file_name)
-    : open_file_name_(open_file_name),
-      event_(true, false),
-      success_(false) {
-}
-
-bool FilePickerSessionBase::Run() {
-  DCHECK(globals.appview_msg_loop != NULL);
-
-  // Post the picker request over to the metro thread.
-  bool posted = globals.appview_msg_loop->PostTask(FROM_HERE,
-      base::Bind(&FilePickerSessionBase::DoFilePicker, base::Unretained(this)));
-  if (!posted)
-    return false;
-
-  // Wait for the file picker to complete.
-  event_.Wait();
-
-  return success_;
-}
-
-void FilePickerSessionBase::DoFilePicker() {
-  // The file picker will fail if spawned from a snapped application,
-  // so let's attempt to unsnap first if we're in that state.
-  HRESULT hr = ChromeAppView::Unsnap();
-  if (FAILED(hr)) {
-    LOG(ERROR) << "Failed to unsnap for file picker, error 0x" << hr;
-  }
-
-  if (SUCCEEDED(hr))
-    hr = StartFilePicker();
-
-  if (FAILED(hr)) {
-    LOG(ERROR) << "Failed to start file picker, error 0x"
-               << std::hex << hr;
-
-    event_.Signal();
-  }
-}
-
-OpenFilePickerSession::OpenFilePickerSession(OPENFILENAME* open_file_name)
-    : FilePickerSessionBase(open_file_name) {
-}
-
-HRESULT OpenFilePickerSession::SinglePickerDone(SingleFileAsyncOp* async,
-                                                AsyncStatus status) {
-  if (status == Completed) {
-    mswr::ComPtr<winstorage::IStorageFile> file;
-    HRESULT hr = async->GetResults(file.GetAddressOf());
-
-    if (file) {
-      mswr::ComPtr<winstorage::IStorageItem> storage_item;
-      if (SUCCEEDED(hr))
-        hr = file.As(&storage_item);
-
-      mswrw::HString file_path;
-      if (SUCCEEDED(hr))
-        hr = storage_item->get_Path(file_path.GetAddressOf());
-
-      if (SUCCEEDED(hr)) {
-        UINT32 path_len = 0;
-        const wchar_t* path_str =
-            ::WindowsGetStringRawBuffer(file_path.Get(), &path_len);
-
-        // If the selected file name is longer than the supplied buffer,
-        // we return false as per GetOpenFileName documentation.
-        if (path_len < open_file_name_->nMaxFile) {
-          base::wcslcpy(open_file_name_->lpstrFile,
-                        path_str,
-                        open_file_name_->nMaxFile);
-          success_ = true;
-        }
-      }
-    } else {
-      LOG(ERROR) << "NULL IStorageItem";
-    }
-  } else {
-    LOG(ERROR) << "Unexpected async status " << static_cast<int>(status);
-  }
-
-  event_.Signal();
-
-  return S_OK;
-}
-
-HRESULT OpenFilePickerSession::MultiPickerDone(MultiFileAsyncOp* async,
-                                                 AsyncStatus status) {
-  if (status == Completed) {
-    mswr::ComPtr<StorageFileVectorCollection> files;
-    HRESULT hr = async->GetResults(files.GetAddressOf());
-
-    if (files) {
-      base::string16 result;
-      if (SUCCEEDED(hr))
-        hr = ComposeMultiFileResult(files.Get(), &result);
-
-      if (SUCCEEDED(hr)) {
-        if (result.size() + 1 < open_file_name_->nMaxFile) {
-          // Because the result has embedded nulls, we must memcpy.
-          memcpy(open_file_name_->lpstrFile,
-                 result.c_str(),
-                 (result.size() + 1) * sizeof(result[0]));
-          success_ = true;
-        }
-      }
-    } else {
-      LOG(ERROR) << "NULL StorageFileVectorCollection";
-    }
-  } else {
-    LOG(ERROR) << "Unexpected async status " << static_cast<int>(status);
-  }
-
-  event_.Signal();
-
-  return S_OK;
-}
-
-HRESULT OpenFilePickerSession::StartFilePicker() {
-  DCHECK(globals.appview_msg_loop->BelongsToCurrentThread());
-  DCHECK(open_file_name_ != NULL);
-
-  mswrw::HStringReference class_name(
-      RuntimeClass_Windows_Storage_Pickers_FileOpenPicker);
-
-  // Create the file picker.
-  mswr::ComPtr<winstorage::Pickers::IFileOpenPicker> picker;
-  HRESULT hr = ::Windows::Foundation::ActivateInstance(
-      class_name.Get(), picker.GetAddressOf());
-  CheckHR(hr);
-
-  // Set the file type filter
-  mswr::ComPtr<winfoundtn::Collections::IVector<HSTRING>> filter;
-  hr = picker->get_FileTypeFilter(filter.GetAddressOf());
-  if (FAILED(hr))
-    return hr;
-
-  if (open_file_name_->lpstrFilter == NULL) {
-    hr = filter->Append(mswrw::HStringReference(L"*").Get());
-    if (FAILED(hr))
-      return hr;
-  } else {
-    // The filter is a concatenation of zero terminated string pairs,
-    // where each pair is {description, extension}. The concatenation ends
-    // with a zero length string - e.g. a double zero terminator.
-    const wchar_t* walk = open_file_name_->lpstrFilter;
-    while (*walk != L'\0') {
-      // Walk past the description.
-      walk += wcslen(walk) + 1;
-
-      // We should have an extension, but bail on malformed filters.
-      if (*walk == L'\0')
-        break;
-
-      // There can be a single extension, or a list of semicolon-separated ones.
-      std::vector<base::string16> extensions_win32_style = base::SplitString(
-          walk, L";", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
-
-      // Metro wants suffixes only, not patterns.
-      mswrw::HString extension;
-      for (size_t i = 0; i < extensions_win32_style.size(); ++i) {
-        if (extensions_win32_style[i] == L"*.*") {
-          // The wildcard filter is "*" for Metro. The string "*.*" produces
-          // an "invalid parameter" error.
-          hr = extension.Set(L"*");
-        } else {
-          // Metro wants suffixes only, not patterns.
-          base::string16 ext =
-              base::FilePath(extensions_win32_style[i]).Extension();
-          if ((ext.size() < 2) ||
-              (ext.find_first_of(L"*?") != base::string16::npos)) {
-            continue;
-          }
-          hr = extension.Set(ext.c_str());
-        }
-        if (SUCCEEDED(hr))
-          hr = filter->Append(extension.Get());
-        if (FAILED(hr))
-          return hr;
-      }
-
-      // Walk past the extension.
-      walk += wcslen(walk) + 1;
-    }
-  }
-
-  // Spin up a single or multi picker as appropriate.
-  if (open_file_name_->Flags & OFN_ALLOWMULTISELECT) {
-    mswr::ComPtr<MultiFileAsyncOp> completion;
-    hr = picker->PickMultipleFilesAsync(&completion);
-    if (FAILED(hr))
-      return hr;
-
-    // Create the callback method.
-    typedef winfoundtn::IAsyncOperationCompletedHandler<
-        StorageFileVectorCollection*> HandlerDoneType;
-    mswr::ComPtr<HandlerDoneType> handler(mswr::Callback<HandlerDoneType>(
-        this, &OpenFilePickerSession::MultiPickerDone));
-    DCHECK(handler.Get() != NULL);
-    hr = completion->put_Completed(handler.Get());
-
-    return hr;
-  } else {
-    mswr::ComPtr<SingleFileAsyncOp> completion;
-    hr = picker->PickSingleFileAsync(&completion);
-    if (FAILED(hr))
-      return hr;
-
-    // Create the callback method.
-    typedef winfoundtn::IAsyncOperationCompletedHandler<
-        winstorage::StorageFile*> HandlerDoneType;
-    mswr::ComPtr<HandlerDoneType> handler(mswr::Callback<HandlerDoneType>(
-        this, &OpenFilePickerSession::SinglePickerDone));
-    DCHECK(handler.Get() != NULL);
-    hr = completion->put_Completed(handler.Get());
-
-    return hr;
-  }
-}
-
-HRESULT OpenFilePickerSession::ComposeMultiFileResult(
-    StorageFileVectorCollection* files, base::string16* result) {
-  DCHECK(files != NULL);
-  DCHECK(result != NULL);
-
-  // Empty the output string.
-  result->clear();
-
-  unsigned int num_files = 0;
-  HRESULT hr = files->get_Size(&num_files);
-  if (FAILED(hr))
-    return hr;
-
-  // Make sure we return an error on an empty collection.
-  if (num_files == 0) {
-    DLOG(ERROR) << "Empty collection on input.";
-    return E_UNEXPECTED;
-  }
-
-  // This stores the base path that should be the parent of all the files.
-  base::FilePath base_path;
-
-  // Iterate through the collection and append the file paths to the result.
-  for (unsigned int i = 0; i < num_files; ++i) {
-    mswr::ComPtr<winstorage::IStorageFile> file;
-    hr = files->GetAt(i, file.GetAddressOf());
-    if (FAILED(hr))
-      return hr;
-
-    mswr::ComPtr<winstorage::IStorageItem> storage_item;
-    hr = file.As(&storage_item);
-    if (FAILED(hr))
-      return hr;
-
-    mswrw::HString file_path_str;
-    hr = storage_item->get_Path(file_path_str.GetAddressOf());
-    if (FAILED(hr))
-      return hr;
-
-    base::FilePath file_path(MakeStdWString(file_path_str.Get()));
-    if (base_path.empty()) {
-      DCHECK(result->empty());
-      base_path = file_path.DirName();
-
-      // Append the path, including the terminating zero.
-      // We do this only for the first file.
-      result->append(base_path.value().c_str(), base_path.value().size() + 1);
-    }
-    DCHECK(!result->empty());
-    DCHECK(!base_path.empty());
-    DCHECK(base_path == file_path.DirName());
-
-    // Append the base name, including the terminating zero.
-    base::FilePath base_name = file_path.BaseName();
-    result->append(base_name.value().c_str(), base_name.value().size() + 1);
-  }
-
-  DCHECK(!result->empty());
-
-  return S_OK;
-}
-
-SaveFilePickerSession::SaveFilePickerSession(OPENFILENAME* open_file_name)
-    : FilePickerSessionBase(open_file_name) {
-}
-
-HRESULT SaveFilePickerSession::StartFilePicker() {
-  DCHECK(globals.appview_msg_loop->BelongsToCurrentThread());
-  DCHECK(open_file_name_ != NULL);
-
-  mswrw::HStringReference class_name(
-      RuntimeClass_Windows_Storage_Pickers_FileSavePicker);
-
-  // Create the file picker.
-  mswr::ComPtr<winstorage::Pickers::IFileSavePicker> picker;
-  HRESULT hr = ::Windows::Foundation::ActivateInstance(
-      class_name.Get(), picker.GetAddressOf());
-  CheckHR(hr);
-
-  typedef winfoundtn::Collections::IMap<HSTRING, StringVectorItf*>
-      StringVectorMap;
-  mswr::ComPtr<StringVectorMap> choices;
-  hr = picker->get_FileTypeChoices(choices.GetAddressOf());
-  if (FAILED(hr))
-    return hr;
-
-  if (open_file_name_->lpstrFilter) {
-    // The filter is a concatenation of zero terminated string pairs,
-    // where each pair is {description, extension list}. The concatenation ends
-    // with a zero length string - e.g. a double zero terminator.
-    const wchar_t* walk = open_file_name_->lpstrFilter;
-    while (*walk != L'\0') {
-      mswrw::HString description;
-      hr = description.Set(walk);
-      if (FAILED(hr))
-        return hr;
-
-      // Walk past the description.
-      walk += wcslen(walk) + 1;
-
-      // We should have an extension, but bail on malformed filters.
-      if (*walk == L'\0')
-        break;
-
-      // There can be a single extension, or a list of semicolon-separated ones.
-      std::vector<base::string16> extensions_win32_style = base::SplitString(
-          walk, L";", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
-
-      // Metro wants suffixes only, not patterns.  Also, metro does not support
-      // the all files ("*") pattern in the save picker.
-      std::vector<base::string16> extensions;
-      for (size_t i = 0; i < extensions_win32_style.size(); ++i) {
-        base::string16 ext =
-            base::FilePath(extensions_win32_style[i]).Extension();
-        if ((ext.size() < 2) ||
-            (ext.find_first_of(L"*?") != base::string16::npos))
-          continue;
-        extensions.push_back(ext);
-      }
-
-      if (!extensions.empty()) {
-        // Convert to a Metro collection class.
-        mswr::ComPtr<StringVectorItf> list;
-        hr = mswr::MakeAndInitialize<StringVectorImpl>(
-            list.GetAddressOf(), extensions);
-        if (FAILED(hr))
-          return hr;
-
-        // Finally set the filter.
-        boolean replaced = FALSE;
-        hr = choices->Insert(description.Get(), list.Get(), &replaced);
-        if (FAILED(hr))
-          return hr;
-        DCHECK_EQ(FALSE, replaced);
-      }
-
-      // Walk past the extension(s).
-      walk += wcslen(walk) + 1;
-    }
-  }
-
-  // The save picker requires at least one choice.  Callers are strongly advised
-  // to provide sensible choices.  If none were given, fallback to .dat.
-  uint32_t num_choices = 0;
-  hr = choices->get_Size(&num_choices);
-  if (FAILED(hr))
-    return hr;
-
-  if (num_choices == 0) {
-    mswrw::HString description;
-    // TODO(grt): Get a properly translated string.  This can't be done from
-    // within metro_driver.  Consider preprocessing the filter list in Chrome
-    // land to ensure it has this entry if all others are patterns.  In that
-    // case, this whole block of code can be removed.
-    hr = description.Set(L"Data File");
-    if (FAILED(hr))
-      return hr;
-
-    mswr::ComPtr<StringVectorItf> list;
-    hr = mswr::MakeAndInitialize<StringVectorImpl>(
-        list.GetAddressOf(), std::vector<base::string16>(1, L".dat"));
-    if (FAILED(hr))
-      return hr;
-
-    boolean replaced = FALSE;
-    hr = choices->Insert(description.Get(), list.Get(), &replaced);
-    if (FAILED(hr))
-      return hr;
-    DCHECK_EQ(FALSE, replaced);
-  }
-
-  if (open_file_name_->lpstrFile != NULL) {
-    hr = picker->put_SuggestedFileName(
-        mswrw::HStringReference(
-            const_cast<const wchar_t*>(open_file_name_->lpstrFile)).Get());
-    if (FAILED(hr))
-      return hr;
-  }
-
-  mswr::ComPtr<SaveFileAsyncOp> completion;
-  hr = picker->PickSaveFileAsync(&completion);
-  if (FAILED(hr))
-    return hr;
-
-  // Create the callback method.
-  typedef winfoundtn::IAsyncOperationCompletedHandler<
-      winstorage::StorageFile*> HandlerDoneType;
-  mswr::ComPtr<HandlerDoneType> handler(mswr::Callback<HandlerDoneType>(
-      this, &SaveFilePickerSession::FilePickerDone));
-  DCHECK(handler.Get() != NULL);
-  hr = completion->put_Completed(handler.Get());
-
-  return hr;
-}
-
-HRESULT SaveFilePickerSession::FilePickerDone(SaveFileAsyncOp* async,
-                                              AsyncStatus status) {
-  if (status == Completed) {
-    mswr::ComPtr<winstorage::IStorageFile> file;
-    HRESULT hr = async->GetResults(file.GetAddressOf());
-
-    if (file) {
-      mswr::ComPtr<winstorage::IStorageItem> storage_item;
-      if (SUCCEEDED(hr))
-        hr = file.As(&storage_item);
-
-      mswrw::HString file_path;
-      if (SUCCEEDED(hr))
-        hr = storage_item->get_Path(file_path.GetAddressOf());
-
-      if (SUCCEEDED(hr)) {
-        base::string16 path_str = MakeStdWString(file_path.Get());
-
-        // If the selected file name is longer than the supplied buffer,
-        // we return false as per GetOpenFileName documentation.
-        if (path_str.size() < open_file_name_->nMaxFile) {
-          base::wcslcpy(open_file_name_->lpstrFile,
-                        path_str.c_str(),
-                        open_file_name_->nMaxFile);
-          success_ = true;
-        }
-      }
-    } else {
-      LOG(ERROR) << "NULL IStorageItem";
-    }
-  } else {
-    LOG(ERROR) << "Unexpected async status " << static_cast<int>(status);
-  }
-
-  event_.Signal();
-
-  return S_OK;
-}
-
-}  // namespace
-
-BOOL MetroGetOpenFileName(OPENFILENAME* open_file_name) {
-  OpenFilePickerSession session(open_file_name);
-
-  return session.Run();
-}
-
-BOOL MetroGetSaveFileName(OPENFILENAME* open_file_name) {
-  SaveFilePickerSession session(open_file_name);
-
-  return session.Run();
-}