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 3 // found in the LICENSE file. 4 // 5 // KeywordExtensionsDelegateImpl contains the extensions-only logic used by 6 // KeywordProvider. Overrides KeywordExtensionsDelegate which does nothing. 7 8 #ifndef CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_EXTENSIONS_DELEGATE_IMPL_H_ 9 #define CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_EXTENSIONS_DELEGATE_IMPL_H_ 10 11 #include <vector> 12 13 #include "base/compiler_specific.h" 14 #include "chrome/browser/autocomplete/autocomplete_input.h" 15 #include "chrome/browser/autocomplete/autocomplete_match.h" 16 #include "chrome/browser/autocomplete/autocomplete_provider_listener.h" 17 #include "chrome/browser/autocomplete/keyword_extensions_delegate.h" 18 #include "chrome/browser/autocomplete/keyword_provider.h" 19 #include "content/public/browser/notification_observer.h" 20 #include "content/public/browser/notification_registrar.h" 21 22 #if !defined(ENABLE_EXTENSIONS) 23 #error "Should not be included when extensions are disabled" 24 #endif 25 26 class KeywordExtensionsDelegateImpl : public KeywordExtensionsDelegate, 27 public content::NotificationObserver { 28 public: 29 explicit KeywordExtensionsDelegateImpl(KeywordProvider* provider); 30 virtual ~KeywordExtensionsDelegateImpl(); 31 32 private: 33 // KeywordExtensionsDelegate: 34 virtual void IncrementInputId() OVERRIDE; 35 virtual bool IsEnabledExtension(Profile* profile, 36 const std::string& extension_id) OVERRIDE; 37 virtual bool Start(const AutocompleteInput& input, 38 bool minimal_changes, 39 const TemplateURL* template_url, 40 const base::string16& remaining_input) OVERRIDE; 41 virtual void EnterExtensionKeywordMode( 42 const std::string& extension_id) OVERRIDE; 43 virtual void MaybeEndExtensionKeywordMode() OVERRIDE; 44 45 // content::NotificationObserver: 46 virtual void Observe(int type, 47 const content::NotificationSource& source, 48 const content::NotificationDetails& details) OVERRIDE; 49 profile()50 Profile* profile() { return provider_->profile_; } matches()51 ACMatches* matches() { return &provider_->matches_; } set_done(bool done)52 void set_done(bool done) { 53 provider_->done_ = done; 54 } 55 56 // Notifies the KeywordProvider about asynchronous updates from the extension. 57 void OnProviderUpdate(bool updated_matches); 58 59 // Identifies the current input state. This is incremented each time the 60 // autocomplete edit's input changes in any way. It is used to tell whether 61 // suggest results from the extension are current. 62 int current_input_id_; 63 64 // The input state at the time we last asked the extension for suggest 65 // results. 66 AutocompleteInput extension_suggest_last_input_; 67 68 // We remember the last suggestions we've received from the extension in case 69 // we need to reset our matches without asking the extension again. 70 std::vector<AutocompleteMatch> extension_suggest_matches_; 71 72 // If non-empty, holds the ID of the extension whose keyword is currently in 73 // the URL bar while the autocomplete popup is open. 74 std::string current_keyword_extension_id_; 75 76 // The owner of this class. 77 KeywordProvider* provider_; 78 79 content::NotificationRegistrar registrar_; 80 81 // We need our input IDs to be unique across all profiles, so we keep a global 82 // UID that each provider uses. 83 static int global_input_uid_; 84 85 DISALLOW_COPY_AND_ASSIGN(KeywordExtensionsDelegateImpl); 86 }; 87 88 #endif // CHROME_BROWSER_AUTOCOMPLETE_KEYWORD_EXTENSIONS_DELEGATE_IMPL_H_ 89