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// Copyright (c) 2013 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 "ppapi/proxy/pdf_resource.h"
#include <stdlib.h>
#include <string.h>
#include "base/command_line.h"
#include "base/metrics/histogram.h"
#include "base/strings/utf_string_conversions.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/private/ppb_pdf.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/ppb_image_data_proxy.h"
#include "ppapi/shared_impl/var.h"
#include "third_party/icu/source/i18n/unicode/usearch.h"
namespace ppapi {
namespace proxy {
namespace {
// TODO(raymes): This is just copied from render_thread_impl.cc. We should have
// generic code somewhere to get the locale in the plugin.
std::string GetLocale() {
// The browser process should have passed the locale to the plugin via the
// --lang command line flag.
const CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess();
const std::string& lang = parsed_command_line.GetSwitchValueASCII("lang");
DCHECK(!lang.empty());
return lang;
}
} // namespace
PDFResource::PDFResource(Connection connection, PP_Instance instance)
: PluginResource(connection, instance) {
SendCreate(RENDERER, PpapiHostMsg_PDF_Create());
}
PDFResource::~PDFResource() {
}
thunk::PPB_PDF_API* PDFResource::AsPPB_PDF_API() {
return this;
}
PP_Var PDFResource::GetLocalizedString(PP_ResourceString string_id) {
std::string localized_string;
int32_t result = SyncCall<PpapiPluginMsg_PDF_GetLocalizedStringReply>(
RENDERER, PpapiHostMsg_PDF_GetLocalizedString(string_id),
&localized_string);
if (result != PP_OK)
return PP_MakeUndefined();
return ppapi::StringVar::StringToPPVar(localized_string);
}
void PDFResource::SearchString(const unsigned short* input_string,
const unsigned short* input_term,
bool case_sensitive,
PP_PrivateFindResult** results, int* count) {
if (locale_.empty())
locale_ = GetLocale();
const base::char16* string =
reinterpret_cast<const base::char16*>(input_string);
const base::char16* term =
reinterpret_cast<const base::char16*>(input_term);
UErrorCode status = U_ZERO_ERROR;
UStringSearch* searcher = usearch_open(term, -1, string, -1, locale_.c_str(),
0, &status);
DCHECK(status == U_ZERO_ERROR || status == U_USING_FALLBACK_WARNING ||
status == U_USING_DEFAULT_WARNING);
UCollationStrength strength = case_sensitive ? UCOL_TERTIARY : UCOL_PRIMARY;
UCollator* collator = usearch_getCollator(searcher);
if (ucol_getStrength(collator) != strength) {
ucol_setStrength(collator, strength);
usearch_reset(searcher);
}
status = U_ZERO_ERROR;
int match_start = usearch_first(searcher, &status);
DCHECK(status == U_ZERO_ERROR);
std::vector<PP_PrivateFindResult> pp_results;
while (match_start != USEARCH_DONE) {
size_t matched_length = usearch_getMatchedLength(searcher);
PP_PrivateFindResult result;
result.start_index = match_start;
result.length = matched_length;
pp_results.push_back(result);
match_start = usearch_next(searcher, &status);
DCHECK(status == U_ZERO_ERROR);
}
*count = pp_results.size();
if (*count) {
*results = reinterpret_cast<PP_PrivateFindResult*>(malloc(
*count * sizeof(PP_PrivateFindResult)));
memcpy(*results, &pp_results[0], *count * sizeof(PP_PrivateFindResult));
} else {
*results = NULL;
}
usearch_close(searcher);
}
void PDFResource::DidStartLoading() {
Post(RENDERER, PpapiHostMsg_PDF_DidStartLoading());
}
void PDFResource::DidStopLoading() {
Post(RENDERER, PpapiHostMsg_PDF_DidStopLoading());
}
void PDFResource::SetContentRestriction(int restrictions) {
Post(RENDERER, PpapiHostMsg_PDF_SetContentRestriction(restrictions));
}
void PDFResource::HistogramPDFPageCount(int count) {
UMA_HISTOGRAM_COUNTS_10000("PDF.PageCount", count);
}
void PDFResource::UserMetricsRecordAction(const PP_Var& action) {
scoped_refptr<ppapi::StringVar> action_str(
ppapi::StringVar::FromPPVar(action));
if (action_str.get()) {
Post(RENDERER,
PpapiHostMsg_PDF_UserMetricsRecordAction(action_str->value()));
}
}
void PDFResource::HasUnsupportedFeature() {
Post(RENDERER, PpapiHostMsg_PDF_HasUnsupportedFeature());
}
void PDFResource::Print() {
Post(RENDERER, PpapiHostMsg_PDF_Print());
}
void PDFResource::SaveAs() {
Post(RENDERER, PpapiHostMsg_PDF_SaveAs());
}
PP_Bool PDFResource::IsFeatureEnabled(PP_PDFFeature feature) {
PP_Bool result = PP_FALSE;
switch (feature) {
case PP_PDFFEATURE_HIDPI:
result = PP_TRUE;
break;
case PP_PDFFEATURE_PRINTING:
// TODO(raymes): Use PrintWebViewHelper::IsPrintingEnabled.
result = PP_FALSE;
break;
}
return result;
}
PP_Resource PDFResource::GetResourceImageForScale(PP_ResourceImage image_id,
float scale) {
IPC::Message reply;
ResourceMessageReplyParams reply_params;
int32_t result = GenericSyncCall(
RENDERER, PpapiHostMsg_PDF_GetResourceImage(image_id, scale), &reply,
&reply_params);
if (result != PP_OK)
return 0;
HostResource resource;
PP_ImageDataDesc image_desc;
if (!UnpackMessage<PpapiPluginMsg_PDF_GetResourceImageReply>(
reply, &resource, &image_desc)) {
return 0;
}
if (resource.is_null())
return 0;
if (!PPB_ImageData_Shared::IsImageDataDescValid(image_desc))
return 0;
base::SharedMemoryHandle handle;
if (!reply_params.TakeSharedMemoryHandleAtIndex(0, &handle))
return 0;
return (new SimpleImageData(resource, image_desc, handle))->GetReference();
}
PP_Resource PDFResource::GetResourceImage(PP_ResourceImage image_id) {
return GetResourceImageForScale(image_id, 1.0f);
}
PP_Bool PDFResource::IsOutOfProcess() {
return PP_TRUE;
}
void PDFResource::SetSelectedText(const char* selected_text) {
Post(RENDERER,
PpapiHostMsg_PDF_SetSelectedText(base::UTF8ToUTF16(selected_text)));
}
void PDFResource::SetLinkUnderCursor(const char* url) {
Post(RENDERER, PpapiHostMsg_PDF_SetLinkUnderCursor(url));
}
} // namespace proxy
} // namespace ppapi
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