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// Copyright (c) 2010 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 "chrome/browser/file_select_helper.h"
#include "app/l10n_util.h"
#include "base/file_util.h"
#include "base/string_split.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "net/base/mime_util.h"
#include "chrome/browser/platform_util.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/renderer_host/render_view_host.h"
#include "chrome/browser/renderer_host/render_widget_host_view.h"
#include "chrome/browser/shell_dialogs.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/tab_contents/tab_contents_view.h"
#include "chrome/common/notification_details.h"
#include "chrome/common/notification_source.h"
#include "chrome/common/render_messages_params.h"
#include "grit/generated_resources.h"
FileSelectHelper::FileSelectHelper(Profile* profile)
: profile_(profile),
render_view_host_(NULL),
select_file_dialog_(),
dialog_type_(SelectFileDialog::SELECT_OPEN_FILE) {
}
FileSelectHelper::~FileSelectHelper() {
// There may be pending file dialogs, we need to tell them that we've gone
// away so they don't try and call back to us.
if (select_file_dialog_.get())
select_file_dialog_->ListenerDestroyed();
// Stop any pending directory enumeration and prevent a callback.
if (directory_lister_.get()) {
directory_lister_->set_delegate(NULL);
directory_lister_->Cancel();
}
}
void FileSelectHelper::FileSelected(const FilePath& path,
int index, void* params) {
if (!render_view_host_)
return;
profile_->set_last_selected_directory(path.DirName());
if (dialog_type_ == SelectFileDialog::SELECT_FOLDER) {
DirectorySelected(path);
return;
}
std::vector<FilePath> files;
files.push_back(path);
render_view_host_->FilesSelectedInChooser(files);
// We are done with this showing of the dialog.
render_view_host_ = NULL;
}
void FileSelectHelper::MultiFilesSelected(const std::vector<FilePath>& files,
void* params) {
if (!files.empty())
profile_->set_last_selected_directory(files[0].DirName());
if (!render_view_host_)
return;
render_view_host_->FilesSelectedInChooser(files);
// We are done with this showing of the dialog.
render_view_host_ = NULL;
}
void FileSelectHelper::FileSelectionCanceled(void* params) {
if (!render_view_host_)
return;
// If the user cancels choosing a file to upload we pass back an
// empty vector.
render_view_host_->FilesSelectedInChooser(std::vector<FilePath>());
// We are done with this showing of the dialog.
render_view_host_ = NULL;
}
void FileSelectHelper::DirectorySelected(const FilePath& path) {
directory_lister_ = new net::DirectoryLister(path,
true,
net::DirectoryLister::NO_SORT,
this);
if (!directory_lister_->Start())
FileSelectionCanceled(NULL);
}
void FileSelectHelper::OnListFile(
const net::DirectoryLister::DirectoryListerData& data) {
// Directory upload only cares about files. This util call just checks
// the flags in the structure; there's no file I/O going on.
if (file_util::FileEnumerator::IsDirectory(data.info))
return;
directory_lister_results_.push_back(data.path);
}
void FileSelectHelper::OnListDone(int error) {
if (!render_view_host_)
return;
if (error) {
FileSelectionCanceled(NULL);
return;
}
render_view_host_->FilesSelectedInChooser(directory_lister_results_);
render_view_host_ = NULL;
directory_lister_ = NULL;
directory_lister_results_.clear();
}
SelectFileDialog::FileTypeInfo* FileSelectHelper::GetFileTypesFromAcceptType(
const string16& accept_types) {
if (accept_types.empty())
return NULL;
// Split the accept-type string on commas.
std::vector<string16> mime_types;
base::SplitStringUsingSubstr(accept_types, ASCIIToUTF16(","), &mime_types);
if (mime_types.empty())
return NULL;
// Create FileTypeInfo and pre-allocate for the first extension list.
scoped_ptr<SelectFileDialog::FileTypeInfo> file_type(
new SelectFileDialog::FileTypeInfo());
file_type->include_all_files = true;
file_type->extensions.resize(1);
std::vector<FilePath::StringType>* extensions = &file_type->extensions.back();
// Find the correspondinge extensions.
int valid_type_count = 0;
int description_id = 0;
for (size_t i = 0; i < mime_types.size(); ++i) {
string16 mime_type = mime_types[i];
std::string ascii_mime_type = StringToLowerASCII(UTF16ToASCII(mime_type));
TrimWhitespace(ascii_mime_type, TRIM_ALL, &ascii_mime_type);
if (ascii_mime_type.empty())
continue;
size_t old_extension_size = extensions->size();
if (ascii_mime_type == "image/*") {
description_id = IDS_IMAGE_FILES;
net::GetImageExtensions(extensions);
} else if (ascii_mime_type == "audio/*") {
description_id = IDS_AUDIO_FILES;
net::GetAudioExtensions(extensions);
} else if (ascii_mime_type == "video/*") {
description_id = IDS_VIDEO_FILES;
net::GetVideoExtensions(extensions);
} else {
net::GetExtensionsForMimeType(ascii_mime_type, extensions);
}
if (extensions->size() > old_extension_size)
valid_type_count++;
}
// Use a generic description "Custom Files" if either of the following is
// true:
// 1) There're multiple types specified, like "audio/*,video/*"
// 2) There're multiple extensions for a MIME type without parameter, like
// "ehtml,shtml,htm,html" for "text/html". On Windows, the select file
// dialog uses the first extension in the list to form the description,
// like "EHTML Files". This is not what we want.
if (valid_type_count > 1 ||
(valid_type_count == 1 && description_id == 0 && extensions->size() > 1))
description_id = IDS_CUSTOM_FILES;
if (description_id) {
file_type->extension_description_overrides.push_back(
l10n_util::GetStringUTF16(description_id));
}
return file_type.release();
}
void FileSelectHelper::RunFileChooser(
RenderViewHost* render_view_host,
const ViewHostMsg_RunFileChooser_Params ¶ms) {
DCHECK(!render_view_host_);
render_view_host_ = render_view_host;
notification_registrar_.RemoveAll();
notification_registrar_.Add(this,
NotificationType::RENDER_WIDGET_HOST_DESTROYED,
Source<RenderViewHost>(render_view_host));
if (!select_file_dialog_.get())
select_file_dialog_ = SelectFileDialog::Create(this);
switch (params.mode) {
case ViewHostMsg_RunFileChooser_Params::Open:
dialog_type_ = SelectFileDialog::SELECT_OPEN_FILE;
break;
case ViewHostMsg_RunFileChooser_Params::OpenMultiple:
dialog_type_ = SelectFileDialog::SELECT_OPEN_MULTI_FILE;
break;
case ViewHostMsg_RunFileChooser_Params::OpenFolder:
dialog_type_ = SelectFileDialog::SELECT_FOLDER;
break;
case ViewHostMsg_RunFileChooser_Params::Save:
dialog_type_ = SelectFileDialog::SELECT_SAVEAS_FILE;
break;
default:
dialog_type_ = SelectFileDialog::SELECT_OPEN_FILE; // Prevent warning.
NOTREACHED();
}
scoped_ptr<SelectFileDialog::FileTypeInfo> file_types(
GetFileTypesFromAcceptType(params.accept_types));
FilePath default_file_name = params.default_file_name;
if (default_file_name.empty())
default_file_name = profile_->last_selected_directory();
gfx::NativeWindow owning_window =
platform_util::GetTopLevel(render_view_host_->view()->GetNativeView());
select_file_dialog_->SelectFile(dialog_type_,
params.title,
default_file_name,
file_types.get(),
0,
FILE_PATH_LITERAL(""),
owning_window,
NULL);
}
void FileSelectHelper::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(type == NotificationType::RENDER_WIDGET_HOST_DESTROYED);
DCHECK(Details<RenderViewHost>(details).ptr() == render_view_host_);
render_view_host_ = NULL;
}
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