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1 // Copyright 2016 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 "ash/display/json_converter.h" | |
6 | |
7 #include <memory> | |
8 #include <string> | |
9 | |
10 #include "ash/display/display_pref_util.h" | |
11 #include "base/logging.h" | |
12 #include "base/strings/string_number_conversions.h" | |
13 #include "base/values.h" | |
14 #include "ui/display/display_layout.h" | |
15 | |
16 namespace ash { | |
17 | |
18 namespace { | |
19 | |
20 // Persistent key names | |
21 const char kMirroredKey[] = "mirrored"; | |
22 const char kDefaultUnifiedKey[] = "default_unified"; | |
23 const char kPrimaryIdKey[] = "primary-id"; | |
24 const char kDisplayPlacementKey[] = "display_placement"; | |
25 | |
26 // DisplayPlacement key names | |
27 const char kPositionKey[] = "position"; | |
28 const char kOffsetKey[] = "offset"; | |
29 const char kDisplayPlacementDisplayIdKey[] = "display_id"; | |
30 const char kDisplayPlacementParentDisplayIdKey[] = "parent_display_id"; | |
31 | |
32 bool AddLegacyValuesFromValue(const base::Value& value, | |
33 display::DisplayLayout* layout) { | |
34 const base::DictionaryValue* dict_value = nullptr; | |
35 if (!value.GetAsDictionary(&dict_value)) | |
36 return false; | |
37 int offset; | |
38 if (dict_value->GetInteger(kOffsetKey, &offset)) { | |
39 display::DisplayPlacement::Position position; | |
40 std::string position_str; | |
41 if (!dict_value->GetString(kPositionKey, &position_str)) | |
42 return false; | |
43 display::DisplayPlacement::StringToPosition(position_str, &position); | |
44 layout->placement_list.emplace_back(position, offset); | |
45 } | |
46 return true; | |
47 } | |
48 | |
49 // Returns true if | |
50 // The key is missing - output is left unchanged | |
51 // The key matches the type - output is updated to the value. | |
52 template <typename Getter, typename Output> | |
53 bool UpdateFromDict(const base::DictionaryValue* dict_value, | |
54 const std::string& field_name, | |
55 Getter getter, | |
56 Output* output) { | |
57 const base::Value* field = nullptr; | |
58 if (!dict_value->Get(field_name, &field)) { | |
59 LOG(WARNING) << "Missing field: " << field_name; | |
60 return true; | |
61 } | |
62 | |
63 return (field->*getter)(output); | |
64 } | |
65 | |
66 // No implementation here as specialization is required. | |
67 template <typename Output> | |
68 bool UpdateFromDict(const base::DictionaryValue* dict_value, | |
69 const std::string& field_name, | |
70 Output* output); | |
71 | |
72 template <> | |
73 bool UpdateFromDict(const base::DictionaryValue* dict_value, | |
74 const std::string& field_name, | |
75 bool* output) { | |
76 return UpdateFromDict(dict_value, field_name, &base::Value::GetAsBoolean, | |
77 output); | |
78 } | |
79 | |
80 template <> | |
81 bool UpdateFromDict(const base::DictionaryValue* dict_value, | |
82 const std::string& field_name, | |
83 int* output) { | |
84 return UpdateFromDict(dict_value, field_name, &base::Value::GetAsInteger, | |
85 output); | |
86 } | |
87 | |
88 template <> | |
89 bool UpdateFromDict(const base::DictionaryValue* dict_value, | |
90 const std::string& field_name, | |
91 display::DisplayPlacement::Position* output) { | |
92 bool (base::Value::*getter)(std::string*) const = &base::Value::GetAsString; | |
93 std::string value; | |
94 if (!UpdateFromDict(dict_value, field_name, getter, &value)) | |
95 return false; | |
96 | |
97 return value.empty() ? true : display::DisplayPlacement::StringToPosition( | |
98 value, output); | |
99 } | |
100 | |
101 template <> | |
102 bool UpdateFromDict(const base::DictionaryValue* dict_value, | |
103 const std::string& field_name, | |
104 int64_t* output) { | |
105 bool (base::Value::*getter)(std::string*) const = &base::Value::GetAsString; | |
106 std::string value; | |
107 if (!UpdateFromDict(dict_value, field_name, getter, &value)) | |
108 return false; | |
109 | |
110 return value.empty() ? true : base::StringToInt64(value, output); | |
111 } | |
112 | |
113 template <> | |
114 bool UpdateFromDict(const base::DictionaryValue* dict_value, | |
115 const std::string& field_name, | |
116 std::vector<display::DisplayPlacement>* output) { | |
117 bool (base::Value::*getter)(const base::ListValue**) const = | |
118 &base::Value::GetAsList; | |
119 const base::ListValue* list = nullptr; | |
120 if (!UpdateFromDict(dict_value, field_name, getter, &list)) | |
121 return false; | |
122 | |
123 if (list == nullptr) | |
124 return true; | |
125 | |
126 output->reserve(list->GetSize()); | |
127 for (const auto& list_item : *list) { | |
128 const base::DictionaryValue* item_values = nullptr; | |
129 if (!list_item->GetAsDictionary(&item_values)) | |
130 return false; | |
131 | |
132 display::DisplayPlacement item; | |
133 if (!UpdateFromDict(item_values, kOffsetKey, &item.offset) || | |
134 !UpdateFromDict(item_values, kPositionKey, &item.position) || | |
135 !UpdateFromDict(item_values, kDisplayPlacementDisplayIdKey, | |
136 &item.display_id) || | |
137 !UpdateFromDict(item_values, kDisplayPlacementParentDisplayIdKey, | |
138 &item.parent_display_id)) { | |
139 return false; | |
140 } | |
141 | |
142 output->push_back(item); | |
143 } | |
144 return true; | |
145 } | |
146 | |
147 } // namespace | |
148 | |
149 bool JsonToDisplayLayout(const base::Value& value, | |
150 display::DisplayLayout* layout) { | |
151 layout->placement_list.clear(); | |
152 const base::DictionaryValue* dict_value = nullptr; | |
153 if (!value.GetAsDictionary(&dict_value)) | |
154 return false; | |
155 | |
156 if (!UpdateFromDict(dict_value, kMirroredKey, &layout->mirrored) || | |
157 !UpdateFromDict(dict_value, kDefaultUnifiedKey, | |
158 &layout->default_unified) || | |
159 !UpdateFromDict(dict_value, kPrimaryIdKey, &layout->primary_id)) { | |
160 return false; | |
161 } | |
162 | |
163 UpdateFromDict(dict_value, kDisplayPlacementKey, &layout->placement_list); | |
164 | |
165 if (layout->placement_list.size() != 0u) | |
166 return true; | |
167 | |
168 // For compatibility with old format. | |
169 return AddLegacyValuesFromValue(value, layout); | |
170 } | |
171 | |
172 bool DisplayLayoutToJson(const display::DisplayLayout& layout, | |
173 base::Value* value) { | |
174 base::DictionaryValue* dict_value = nullptr; | |
175 if (!value->GetAsDictionary(&dict_value)) | |
176 return false; | |
177 | |
178 dict_value->SetBoolean(kMirroredKey, layout.mirrored); | |
179 dict_value->SetBoolean(kDefaultUnifiedKey, layout.default_unified); | |
180 dict_value->SetString(kPrimaryIdKey, base::Int64ToString(layout.primary_id)); | |
181 | |
182 std::unique_ptr<base::ListValue> placement_list(new base::ListValue); | |
183 for (const auto& placement : layout.placement_list) { | |
184 std::unique_ptr<base::DictionaryValue> placement_value( | |
185 new base::DictionaryValue); | |
186 placement_value->SetString( | |
187 kPositionKey, | |
188 display::DisplayPlacement::PositionToString(placement.position)); | |
189 placement_value->SetInteger(kOffsetKey, placement.offset); | |
190 placement_value->SetString(kDisplayPlacementDisplayIdKey, | |
191 base::Int64ToString(placement.display_id)); | |
192 placement_value->SetString( | |
193 kDisplayPlacementParentDisplayIdKey, | |
194 base::Int64ToString(placement.parent_display_id)); | |
195 placement_list->Append(std::move(placement_value)); | |
196 } | |
197 dict_value->Set(kDisplayPlacementKey, std::move(placement_list)); | |
198 return true; | |
199 } | |
200 | |
201 } // namespace ash | |
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