1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ppapi/shared_impl/flash_clipboard_format_registry.h"
6
7#include <cctype>
8
9namespace ppapi {
10
11namespace {
12
13// These values are chosen arbitrarily. Flash will never exceed these but if
14// the interface becomes public, we can reconsider these.
15const size_t kMaxNumFormats = 10;
16const size_t kMaxFormatNameLength = 50;
17
18// All formats in PP_Flash_Clipboard_Format should be added here.
19const PP_Flash_Clipboard_Format kPredefinedFormats[] = {
20    PP_FLASH_CLIPBOARD_FORMAT_INVALID, PP_FLASH_CLIPBOARD_FORMAT_PLAINTEXT,
21    PP_FLASH_CLIPBOARD_FORMAT_HTML,    PP_FLASH_CLIPBOARD_FORMAT_RTF};
22
23// The first custom format ID will be the ID after that max value in
24// PP_Flash_Clipboard_Format.
25const size_t kFirstCustomFormat = arraysize(kPredefinedFormats);
26
27// Checks the validity of the given format name.
28bool IsValidFormatName(const std::string& format_name) {
29  if (format_name.empty() || format_name.length() > kMaxFormatNameLength)
30    return false;
31  return true;
32}
33
34}  // namespace
35
36FlashClipboardFormatRegistry::FlashClipboardFormatRegistry() {}
37
38FlashClipboardFormatRegistry::~FlashClipboardFormatRegistry() {}
39
40uint32_t FlashClipboardFormatRegistry::RegisterFormat(
41    const std::string& format_name) {
42  if (!IsValidFormatName(format_name) ||
43      custom_formats_.size() > kMaxNumFormats) {
44    return PP_FLASH_CLIPBOARD_FORMAT_INVALID;
45  }
46  uint32_t key = kFirstCustomFormat + custom_formats_.size();
47  custom_formats_[key] = format_name;
48  return key;
49}
50
51void FlashClipboardFormatRegistry::SetRegisteredFormat(
52    const std::string& format_name,
53    uint32_t format) {
54  custom_formats_[format] = format_name;
55}
56
57bool FlashClipboardFormatRegistry::IsFormatRegistered(uint32_t format) const {
58  return custom_formats_.find(format) != custom_formats_.end();
59}
60
61std::string FlashClipboardFormatRegistry::GetFormatName(uint32_t format) const {
62  FormatMap::const_iterator it = custom_formats_.find(format);
63  if (it == custom_formats_.end())
64    return std::string();
65  return it->second;
66}
67
68uint32_t FlashClipboardFormatRegistry::GetFormatID(
69    const std::string& format_name) const {
70  for (FormatMap::const_iterator it = custom_formats_.begin();
71       it != custom_formats_.end();
72       ++it) {
73    if (it->second == format_name)
74      return it->first;
75  }
76  return PP_FLASH_CLIPBOARD_FORMAT_INVALID;
77}
78
79// static
80bool FlashClipboardFormatRegistry::IsValidPredefinedFormat(uint32_t format) {
81  if (format == PP_FLASH_CLIPBOARD_FORMAT_INVALID)
82    return false;
83  return format < kFirstCustomFormat;
84}
85
86}  // namespace ppapi
87