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.
5 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_SET_H_
6 #define CHROME_COMMON_EXTENSIONS_EXTENSION_SET_H_
12 #include "base/callback_forward.h"
13 #include "base/gtest_prod_util.h"
14 #include "base/memory/ref_counted.h"
15 #include "chrome/common/extensions/extension.h"
18 // The one true extension container. Extensions are identified by their id.
19 // Only one extension can be in the set with a given ID.
22 typedef std::pair<base::FilePath, std::string> ExtensionPathAndDefaultLocale;
23 typedef std::map<std::string, scoped_refptr<const extensions::Extension> >
25 typedef base::Callback<void(const extensions::ExtensionIdSet&)>
28 // Iteration over the values of the map (given that it's an ExtensionSet,
29 // it should iterate like a set iterator).
30 class const_iterator :
31 public std::iterator<std::input_iterator_tag,
32 scoped_refptr<const extensions::Extension> > {
35 const_iterator(const const_iterator& other);
36 explicit const_iterator(ExtensionMap::const_iterator it);
37 const_iterator& operator++() {
41 const_iterator operator++(int) {
42 const const_iterator old(*this);
46 const scoped_refptr<const extensions::Extension>& operator*() const {
49 const scoped_refptr<const extensions::Extension>* operator->() const {
52 bool operator!=(const const_iterator& other) const {
53 return it_ != other.it_;
55 bool operator==(const const_iterator& other) const {
56 return it_ == other.it_;
60 ExtensionMap::const_iterator it_;
67 bool is_empty() const;
70 const_iterator begin() const { return const_iterator(extensions_.begin()); }
71 const_iterator end() const { return const_iterator(extensions_.end()); }
73 // Returns true if the set contains the specified extension.
74 bool Contains(const std::string& id) const;
76 // Adds the specified extension to the set. The set becomes an owner. Any
77 // previous extension with the same ID is removed.
78 // Returns true if there is no previous extension.
79 bool Insert(const scoped_refptr<const extensions::Extension>& extension);
81 // Copies different items from |extensions| to the current set and returns
82 // whether anything changed.
83 bool InsertAll(const ExtensionSet& extensions);
85 // Removes the specified extension.
86 // Returns true if the set contained the specified extnesion.
87 bool Remove(const std::string& id);
89 // Removes all extensions.
92 // Returns the extension ID, or empty if none. This includes web URLs that
93 // are part of an extension's web extent.
94 std::string GetExtensionOrAppIDByURL(const GURL& url) const;
96 // Returns the Extension, or NULL if none. This includes web URLs that are
97 // part of an extension's web extent.
98 // NOTE: This can return NULL if called before UpdateExtensions receives
99 // bulk extension data (e.g. if called from
100 // EventBindings::HandleContextCreated)
101 const extensions::Extension* GetExtensionOrAppByURL(const GURL& url) const;
103 // Returns the hosted app whose web extent contains the URL.
104 const extensions::Extension* GetHostedAppByURL(const GURL& url) const;
106 // Returns a hosted app that contains any URL that overlaps with the given
107 // extent, if one exists.
108 const extensions::Extension* GetHostedAppByOverlappingWebExtent(
109 const extensions::URLPatternSet& extent) const;
111 // Returns true if |new_url| is in the extent of the same extension as
112 // |old_url|. Also returns true if neither URL is in an app.
113 bool InSameExtent(const GURL& old_url, const GURL& new_url) const;
115 // Look up an Extension object by id.
116 const extensions::Extension* GetByID(const std::string& id) const;
118 // Gets the IDs of all extensions in the set.
119 extensions::ExtensionIdSet GetIDs() const;
121 // Returns true if |info| should get extension api bindings and be permitted
122 // to make api calls. Note that this is independent of what extension
123 // permissions the given extension has been granted.
124 bool ExtensionBindingsAllowed(const GURL& url) const;
126 void set_modification_callback(
127 const ModificationCallback& modification_callback) {
128 modification_callback_ = modification_callback;
132 FRIEND_TEST_ALL_PREFIXES(ExtensionSetTest, ExtensionSet);
134 ExtensionMap extensions_;
136 // If non-null, called with the extension ids in this set after a modification
137 // occurred. This is not called on Clear() which is typically used when
138 // discarding the set (e.g., on shutdown) and we do not want to track that as
139 // a real modification.
140 ModificationCallback modification_callback_;
142 DISALLOW_COPY_AND_ASSIGN(ExtensionSet);
145 #endif // CHROME_COMMON_EXTENSIONS_EXTENSION_SET_H_