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// Copyright (c) 2011 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 "webkit/plugins/ppapi/ppb_file_chooser_impl.h"
#include <string>
#include <vector>
#include "base/logging.h"
#include "base/string_split.h"
#include "base/string_util.h"
#include "base/sys_string_conversions.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/shared_impl/var.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCString.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFileChooserCompletion.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFileChooserParams.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
#include "webkit/glue/webkit_glue.h"
#include "webkit/plugins/ppapi/callbacks.h"
#include "webkit/plugins/ppapi/common.h"
#include "webkit/plugins/ppapi/ppb_file_ref_impl.h"
#include "webkit/plugins/ppapi/plugin_delegate.h"
#include "webkit/plugins/ppapi/plugin_module.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
#include "webkit/plugins/ppapi/resource_helper.h"
using ppapi::StringVar;
using ppapi::thunk::PPB_FileChooser_API;
using WebKit::WebCString;
using WebKit::WebFileChooserCompletion;
using WebKit::WebFileChooserParams;
using WebKit::WebString;
using WebKit::WebVector;
namespace webkit {
namespace ppapi {
namespace {
class FileChooserCompletionImpl : public WebFileChooserCompletion {
public:
FileChooserCompletionImpl(PPB_FileChooser_Impl* file_chooser)
: file_chooser_(file_chooser) {
DCHECK(file_chooser_);
}
virtual ~FileChooserCompletionImpl() {}
virtual void didChooseFile(const WebVector<WebString>& file_names) {
std::vector<std::string> files;
for (size_t i = 0; i < file_names.size(); i++)
files.push_back(file_names[i].utf8());
file_chooser_->StoreChosenFiles(files);
}
private:
scoped_refptr<PPB_FileChooser_Impl> file_chooser_;
};
} // namespace
PPB_FileChooser_Impl::PPB_FileChooser_Impl(
PP_Instance instance,
PP_FileChooserMode_Dev mode,
const char* accept_mime_types)
: Resource(instance),
mode_(mode),
next_chosen_file_index_(0) {
if (accept_mime_types)
accept_mime_types_ = std::string(accept_mime_types);
}
PPB_FileChooser_Impl::~PPB_FileChooser_Impl() {
}
// static
PP_Resource PPB_FileChooser_Impl::Create(
PP_Instance instance,
PP_FileChooserMode_Dev mode,
const char* accept_mime_types) {
if (mode != PP_FILECHOOSERMODE_OPEN &&
mode != PP_FILECHOOSERMODE_OPENMULTIPLE)
return 0;
return (new PPB_FileChooser_Impl(instance, mode,
accept_mime_types))->GetReference();
}
PPB_FileChooser_Impl* PPB_FileChooser_Impl::AsPPB_FileChooser_Impl() {
return this;
}
PPB_FileChooser_API* PPB_FileChooser_Impl::AsPPB_FileChooser_API() {
return this;
}
void PPB_FileChooser_Impl::StoreChosenFiles(
const std::vector<std::string>& files) {
chosen_files_.clear();
next_chosen_file_index_ = 0;
for (std::vector<std::string>::const_iterator it = files.begin();
it != files.end(); ++it) {
#if defined(OS_WIN)
FilePath file_path(base::SysUTF8ToWide(*it));
#else
FilePath file_path(*it);
#endif
chosen_files_.push_back(make_scoped_refptr(
PPB_FileRef_Impl::CreateExternal(pp_instance(), file_path)));
}
RunCallback((chosen_files_.size() > 0) ? PP_OK : PP_ERROR_USERCANCEL);
}
int32_t PPB_FileChooser_Impl::ValidateCallback(
const PP_CompletionCallback& callback) {
// We only support non-blocking calls.
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (callback_.get() && !callback_->completed())
return PP_ERROR_INPROGRESS;
return PP_OK;
}
void PPB_FileChooser_Impl::RegisterCallback(
const PP_CompletionCallback& callback) {
DCHECK(callback.func);
DCHECK(!callback_.get() || callback_->completed());
PluginModule* plugin_module = ResourceHelper::GetPluginModule(this);
if (!plugin_module)
return;
callback_ = new TrackedCompletionCallback(plugin_module->GetCallbackTracker(),
pp_resource(), callback);
}
void PPB_FileChooser_Impl::RunCallback(int32_t result) {
scoped_refptr<TrackedCompletionCallback> callback;
callback.swap(callback_);
callback->Run(result); // Will complete abortively if necessary.
}
int32_t PPB_FileChooser_Impl::Show(const PP_CompletionCallback& callback) {
return ShowWithoutUserGesture(false, NULL, callback);
}
int32_t PPB_FileChooser_Impl::ShowWithoutUserGesture(
bool save_as,
const char* suggested_file_name,
const PP_CompletionCallback& callback) {
int32_t rv = ValidateCallback(callback);
if (rv != PP_OK)
return rv;
DCHECK((mode_ == PP_FILECHOOSERMODE_OPEN) ||
(mode_ == PP_FILECHOOSERMODE_OPENMULTIPLE));
WebFileChooserParams params;
if (save_as) {
params.saveAs = true;
if (suggested_file_name)
params.initialValue = WebString::fromUTF8(suggested_file_name);
} else {
params.multiSelect = (mode_ == PP_FILECHOOSERMODE_OPENMULTIPLE);
}
params.acceptMIMETypes = ParseAcceptValue(accept_mime_types_);
params.directory = false;
PluginDelegate* plugin_delegate = ResourceHelper::GetPluginDelegate(this);
if (!plugin_delegate)
return PP_ERROR_FAILED;
if (!plugin_delegate->RunFileChooser(params,
new FileChooserCompletionImpl(this)))
return PP_ERROR_FAILED;
RegisterCallback(callback);
return PP_OK_COMPLETIONPENDING;
}
PP_Resource PPB_FileChooser_Impl::GetNextChosenFile() {
if (next_chosen_file_index_ >= chosen_files_.size())
return 0;
return chosen_files_[next_chosen_file_index_++]->GetReference();
}
std::vector<WebString> PPB_FileChooser_Impl::ParseAcceptValue(
const std::string& accept_mime_types) {
if (accept_mime_types.empty())
return std::vector<WebString>();
std::vector<std::string> mime_type_list;
base::SplitString(accept_mime_types, ',', &mime_type_list);
std::vector<WebString> normalized_mime_type_list;
normalized_mime_type_list.reserve(mime_type_list.size());
for (size_t i = 0; i < mime_type_list.size(); ++i) {
std::string mime_type = mime_type_list[i];
TrimWhitespaceASCII(mime_type, TRIM_ALL, &mime_type);
if (mime_type.empty())
continue;
if (mime_type.find_first_of('/') == std::string::npos)
continue;
StringToLowerASCII(&mime_type);
normalized_mime_type_list.push_back(WebString::fromUTF8(mime_type.data(),
mime_type.size()));
}
return normalized_mime_type_list;
}
} // namespace ppapi
} // namespace webkit
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