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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 #include "extensions/renderer/event_bindings.h" | 5 #include "extensions/renderer/event_bindings.h" |
| 6 | 6 |
| 7 #include <stdint.h> | 7 #include <stdint.h> |
| 8 | 8 |
| 9 #include <map> | 9 #include <map> |
| 10 #include <memory> | 10 #include <memory> |
| (...skipping 18 matching lines...) Expand all Loading... |
| 29 namespace extensions { | 29 namespace extensions { |
| 30 | 30 |
| 31 namespace { | 31 namespace { |
| 32 | 32 |
| 33 // A map of event names to the number of contexts listening to that event. | 33 // A map of event names to the number of contexts listening to that event. |
| 34 // We notify the browser about event listeners when we transition between 0 | 34 // We notify the browser about event listeners when we transition between 0 |
| 35 // and 1. | 35 // and 1. |
| 36 typedef std::map<std::string, int> EventListenerCounts; | 36 typedef std::map<std::string, int> EventListenerCounts; |
| 37 | 37 |
| 38 // A map of extension IDs to listener counts for that extension. | 38 // A map of extension IDs to listener counts for that extension. |
| 39 base::LazyInstance<std::map<std::string, EventListenerCounts>> | 39 base::LazyInstance<std::map<std::string, EventListenerCounts>>::DestructorAtExit |
| 40 g_listener_counts = LAZY_INSTANCE_INITIALIZER; | 40 g_listener_counts = LAZY_INSTANCE_INITIALIZER; |
| 41 | 41 |
| 42 // A map of (extension ID, event name) pairs to the filtered listener counts | 42 // A map of (extension ID, event name) pairs to the filtered listener counts |
| 43 // for that pair. The map is used to keep track of which filters are in effect | 43 // for that pair. The map is used to keep track of which filters are in effect |
| 44 // for which events. We notify the browser about filtered event listeners when | 44 // for which events. We notify the browser about filtered event listeners when |
| 45 // we transition between 0 and 1. | 45 // we transition between 0 and 1. |
| 46 using FilteredEventListenerKey = std::pair<std::string, std::string>; | 46 using FilteredEventListenerKey = std::pair<std::string, std::string>; |
| 47 using FilteredEventListenerCounts = | 47 using FilteredEventListenerCounts = |
| 48 std::map<FilteredEventListenerKey, std::unique_ptr<ValueCounter>>; | 48 std::map<FilteredEventListenerKey, std::unique_ptr<ValueCounter>>; |
| 49 base::LazyInstance<FilteredEventListenerCounts> g_filtered_listener_counts = | 49 base::LazyInstance<FilteredEventListenerCounts>::DestructorAtExit |
| 50 g_filtered_listener_counts = LAZY_INSTANCE_INITIALIZER; |
| 51 |
| 52 base::LazyInstance<EventFilter>::DestructorAtExit g_event_filter = |
| 50 LAZY_INSTANCE_INITIALIZER; | 53 LAZY_INSTANCE_INITIALIZER; |
| 51 | 54 |
| 52 base::LazyInstance<EventFilter> g_event_filter = LAZY_INSTANCE_INITIALIZER; | |
| 53 | |
| 54 // Gets a unique string key identifier for a ScriptContext. | 55 // Gets a unique string key identifier for a ScriptContext. |
| 55 // TODO(kalman): Just use pointer equality...? | 56 // TODO(kalman): Just use pointer equality...? |
| 56 std::string GetKeyForScriptContext(ScriptContext* script_context) { | 57 std::string GetKeyForScriptContext(ScriptContext* script_context) { |
| 57 const std::string& extension_id = script_context->GetExtensionID(); | 58 const std::string& extension_id = script_context->GetExtensionID(); |
| 58 CHECK(crx_file::id_util::IdIsValid(extension_id) || | 59 CHECK(crx_file::id_util::IdIsValid(extension_id) || |
| 59 script_context->url().is_valid()); | 60 script_context->url().is_valid()); |
| 60 return crx_file::id_util::IdIsValid(extension_id) | 61 return crx_file::id_util::IdIsValid(extension_id) |
| 61 ? extension_id | 62 ? extension_id |
| 62 : script_context->url().spec(); | 63 : script_context->url().spec(); |
| 63 } | 64 } |
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| 363 // Same for filtered events. | 364 // Same for filtered events. |
| 364 std::set<int> attached_matcher_ids_safe = attached_matcher_ids_; | 365 std::set<int> attached_matcher_ids_safe = attached_matcher_ids_; |
| 365 for (int matcher_id : attached_matcher_ids_safe) { | 366 for (int matcher_id : attached_matcher_ids_safe) { |
| 366 DetachFilteredEvent(matcher_id, false /* is_manual */); | 367 DetachFilteredEvent(matcher_id, false /* is_manual */); |
| 367 } | 368 } |
| 368 DCHECK(attached_matcher_ids_.empty()) | 369 DCHECK(attached_matcher_ids_.empty()) |
| 369 << "Filtered events cannot be attached during invalidation"; | 370 << "Filtered events cannot be attached during invalidation"; |
| 370 } | 371 } |
| 371 | 372 |
| 372 } // namespace extensions | 373 } // namespace extensions |
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