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// 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 "chrome/browser/printing/print_system_task_proxy.h"
#include <ctype.h>
#include <string>
#include "base/bind.h"
#include "base/metrics/histogram.h"
#include "base/values.h"
#include "chrome/browser/ui/webui/print_preview/print_preview_handler.h"
#include "chrome/common/child_process_logging.h"
#include "printing/backend/print_backend.h"
#include "printing/print_job_constants.h"
#include "printing/print_settings.h"
#if defined(USE_CUPS)
#include <cups/cups.h>
#include <cups/ppd.h>
#endif
using content::BrowserThread;
namespace {
const char kPrinterId[] = "printerId";
const char kDisableColorOption[] = "disableColorOption";
const char kSetDuplexAsDefault[] = "setDuplexAsDefault";
const char kPrinterColorModelForBlack[] = "printerColorModelForBlack";
const char kPrinterColorModelForColor[] = "printerColorModelForColor";
const char kPrinterDefaultDuplexValue[] = "printerDefaultDuplexValue";
} // namespace
PrintSystemTaskProxy::PrintSystemTaskProxy(
const base::WeakPtr<PrintPreviewHandler>& handler,
printing::PrintBackend* print_backend,
bool has_logged_printers_count)
: handler_(handler),
print_backend_(print_backend),
has_logged_printers_count_(has_logged_printers_count) {
}
PrintSystemTaskProxy::~PrintSystemTaskProxy() {
}
void PrintSystemTaskProxy::GetDefaultPrinter() {
VLOG(1) << "Get default printer start";
VLOG(1) << "Get default printer finished, found: "
<< print_backend_->GetDefaultPrinterName();
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&PrintSystemTaskProxy::SendDefaultPrinter, this,
print_backend_->GetDefaultPrinterName(),
std::string()));
}
void PrintSystemTaskProxy::SendDefaultPrinter(
const std::string& default_printer,
const std::string& cloud_print_data) {
if (handler_)
handler_->SendInitialSettings(default_printer, cloud_print_data);
}
void PrintSystemTaskProxy::EnumeratePrinters() {
VLOG(1) << "Enumerate printers start";
ListValue* printers = new ListValue;
printing::PrinterList printer_list;
print_backend_->EnumeratePrinters(&printer_list);
if (!has_logged_printers_count_) {
// Record the total number of printers.
UMA_HISTOGRAM_COUNTS("PrintPreview.NumberOfPrinters",
printer_list.size());
}
int i = 0;
for (printing::PrinterList::iterator iter = printer_list.begin();
iter != printer_list.end(); ++iter, ++i) {
DictionaryValue* printer_info = new DictionaryValue;
std::string printerName;
#if defined(OS_MACOSX)
// On Mac, |iter->printer_description| specifies the printer name and
// |iter->printer_name| specifies the device name / printer queue name.
printerName = iter->printer_description;
#else
printerName = iter->printer_name;
#endif
printer_info->SetString(printing::kSettingPrinterName, printerName);
printer_info->SetString(printing::kSettingDeviceName, iter->printer_name);
VLOG(1) << "Found printer " << printerName
<< " with device name " << iter->printer_name;
printers->Append(printer_info);
}
VLOG(1) << "Enumerate printers finished, found " << i << " printers";
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&PrintSystemTaskProxy::SetupPrinterList, this, printers));
}
void PrintSystemTaskProxy::SetupPrinterList(ListValue* printers) {
if (handler_)
handler_->SetupPrinterList(*printers);
delete printers;
}
void PrintSystemTaskProxy::GetPrinterCapabilities(
const std::string& printer_name) {
VLOG(1) << "Get printer capabilities start for " << printer_name;
child_process_logging::ScopedPrinterInfoSetter prn_info(
print_backend_->GetPrinterDriverInfo(printer_name));
if (!print_backend_->IsValidPrinter(printer_name)) {
// TODO(gene): Notify explicitly if printer is not valid, instead of
// failed to get capabilities.
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&PrintSystemTaskProxy::SendFailedToGetPrinterCapabilities,
this, printer_name));
return;
}
printing::PrinterSemanticCapsAndDefaults info;
if (!print_backend_->GetPrinterSemanticCapsAndDefaults(printer_name, &info)) {
LOG(WARNING) << "Failed to get capabilities for " << printer_name;
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&PrintSystemTaskProxy::SendFailedToGetPrinterCapabilities,
this, printer_name));
return;
}
DictionaryValue settings_info;
settings_info.SetString(kPrinterId, printer_name);
settings_info.SetBoolean(kDisableColorOption, !info.color_capable);
settings_info.SetBoolean(printing::kSettingSetColorAsDefault,
info.color_default);
// TODO(gene): Make new capabilities format for Print Preview
// that will suit semantic capabiltities better.
// Refactor pld API code below
if (info.duplex_capable) {
settings_info.SetBoolean(kSetDuplexAsDefault,
info.duplex_default != printing::SIMPLEX);
settings_info.SetInteger(kPrinterDefaultDuplexValue,
printing::LONG_EDGE);
} else {
settings_info.SetBoolean(kSetDuplexAsDefault, false);
settings_info.SetInteger(kPrinterDefaultDuplexValue,
printing::UNKNOWN_DUPLEX_MODE);
}
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&PrintSystemTaskProxy::SendPrinterCapabilities, this,
settings_info.DeepCopy()));
}
void PrintSystemTaskProxy::SendPrinterCapabilities(
DictionaryValue* settings_info) {
if (handler_)
handler_->SendPrinterCapabilities(*settings_info);
delete settings_info;
}
void PrintSystemTaskProxy::SendFailedToGetPrinterCapabilities(
const std::string& printer_name) {
if (handler_)
handler_->SendFailedToGetPrinterCapabilities(printer_name);
}
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