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Side by Side Diff: content/common/property_bag.h

Issue 7800015: prune down content_dll change to just the CONTENT_EXPORTS (Closed)
Patch Set: update copyright headers, merge Created 9 years, 3 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CONTENT_COMMON_PROPERTY_BAG_H_ 5 #ifndef CONTENT_COMMON_PROPERTY_BAG_H_
6 #define CONTENT_COMMON_PROPERTY_BAG_H_ 6 #define CONTENT_COMMON_PROPERTY_BAG_H_
7 #pragma once 7 #pragma once
8 8
9 #include <map> 9 #include <map>
10 10
11 #include "base/basictypes.h" 11 #include "base/basictypes.h"
12 #include "content/common/content_export.h"
12 13
13 template <typename T> 14 template <typename T>
14 class linked_ptr; 15 class linked_ptr;
15 class PropertyAccessorBase; 16 class PropertyAccessorBase;
16 17
17 // A property bag holds a generalized list of arbitrary metadata called 18 // A property bag holds a generalized list of arbitrary metadata called
18 // properties. Each property is a class type derived from PropertyBag::Prop 19 // properties. Each property is a class type derived from PropertyBag::Prop
19 // that can be set and retrieved. 20 // that can be set and retrieved.
20 // 21 //
21 // The property bag is not read or written directly. Instead, callers go 22 // The property bag is not read or written directly. Instead, callers go
(...skipping 13 matching lines...) Expand all
35 // } 36 // }
36 // 37 //
37 // void doit(SomeObjectThatImplementsPropertyBag* object) { 38 // void doit(SomeObjectThatImplementsPropertyBag* object) {
38 // PropertyAccessor<int>* accessor = my_accessor(); 39 // PropertyAccessor<int>* accessor = my_accessor();
39 // int* property = accessor->GetProperty(object); 40 // int* property = accessor->GetProperty(object);
40 // if (property) 41 // if (property)
41 // ... use property ... 42 // ... use property ...
42 // 43 //
43 // accessor->SetProperty(object, 22); 44 // accessor->SetProperty(object, 22);
44 // } 45 // }
45 class PropertyBag { 46 class CONTENT_EXPORT PropertyBag {
46 public: 47 public:
47 // The type that uniquely identifies a property type. 48 // The type that uniquely identifies a property type.
48 typedef int PropID; 49 typedef int PropID;
49 enum { NULL_PROP_ID = -1 }; // Invalid property ID. 50 enum { NULL_PROP_ID = -1 }; // Invalid property ID.
50 51
51 // Properties are all derived from this class. They must be deletable and 52 // Properties are all derived from this class. They must be deletable and
52 // copyable 53 // copyable
53 class Prop { 54 class Prop {
54 public: 55 public:
55 virtual ~Prop() {} 56 virtual ~Prop() {}
(...skipping 30 matching lines...) Expand all
86 87
87 PropertyMap props_; 88 PropertyMap props_;
88 89
89 // Copy and assign is explicitly allowed for this class. 90 // Copy and assign is explicitly allowed for this class.
90 }; 91 };
91 92
92 // PropertyAccessorBase ------------------------------------------------------- 93 // PropertyAccessorBase -------------------------------------------------------
93 94
94 // Manages getting the unique IDs to identify a property. Callers should use 95 // Manages getting the unique IDs to identify a property. Callers should use
95 // PropertyAccessor below instead. 96 // PropertyAccessor below instead.
96 class PropertyAccessorBase { 97 class CONTENT_EXPORT PropertyAccessorBase {
97 public: 98 public:
98 PropertyAccessorBase(); 99 PropertyAccessorBase();
99 virtual ~PropertyAccessorBase() {} 100 virtual ~PropertyAccessorBase() {}
100 101
101 // Removes our property, if any, from the given property bag. 102 // Removes our property, if any, from the given property bag.
102 void DeleteProperty(PropertyBag* bag) { 103 void DeleteProperty(PropertyBag* bag) {
103 bag->DeleteProperty(prop_id_); 104 bag->DeleteProperty(prop_id_);
104 } 105 }
105 106
106 protected: 107 protected:
(...skipping 59 matching lines...) Expand 10 before | Expand all | Expand 10 after
166 return new Container(data_); 167 return new Container(data_);
167 } 168 }
168 169
169 T data_; 170 T data_;
170 }; 171 };
171 172
172 DISALLOW_COPY_AND_ASSIGN(PropertyAccessor); 173 DISALLOW_COPY_AND_ASSIGN(PropertyAccessor);
173 }; 174 };
174 175
175 #endif // CONTENT_COMMON_PROPERTY_BAG_H_ 176 #endif // CONTENT_COMMON_PROPERTY_BAG_H_
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