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. 4 5 #include "chrome/browser/ui/find_bar/find_tab_helper.h" 6 7 #include <vector> 8 9 #include "chrome/browser/chrome_notification_types.h" 10 #include "chrome/browser/profiles/profile.h" 11 #include "chrome/browser/ui/find_bar/find_bar_state.h" 12 #include "chrome/browser/ui/find_bar/find_bar_state_factory.h" 13 #include "content/public/browser/notification_service.h" 14 #include "content/public/browser/render_view_host.h" 15 #include "content/public/browser/web_contents.h" 16 #include "content/public/common/stop_find_action.h" 17 #include "third_party/WebKit/public/web/WebFindOptions.h" 18 #include "ui/gfx/rect_f.h" 19 20 using blink::WebFindOptions; 21 using content::WebContents; 22 23 DEFINE_WEB_CONTENTS_USER_DATA_KEY(FindTabHelper); 24 25 // static 26 int FindTabHelper::find_request_id_counter_ = -1; 27 28 FindTabHelper::FindTabHelper(WebContents* web_contents) 29 : content::WebContentsObserver(web_contents), 30 find_ui_active_(false), 31 find_op_aborted_(false), 32 current_find_request_id_(find_request_id_counter_++), 33 last_search_case_sensitive_(false), 34 last_search_result_() { 35 } 36 37 FindTabHelper::~FindTabHelper() { 38 } 39 40 void FindTabHelper::StartFinding(base::string16 search_string, 41 bool forward_direction, 42 bool case_sensitive) { 43 // If search_string is empty, it means FindNext was pressed with a keyboard 44 // shortcut so unless we have something to search for we return early. 45 if (search_string.empty() && find_text_.empty()) { 46 Profile* profile = 47 Profile::FromBrowserContext(web_contents()->GetBrowserContext()); 48 base::string16 last_search_prepopulate_text = 49 FindBarStateFactory::GetLastPrepopulateText(profile); 50 51 // Try the last thing we searched for on this tab, then the last thing 52 // searched for on any tab. 53 if (!previous_find_text_.empty()) 54 search_string = previous_find_text_; 55 else if (!last_search_prepopulate_text.empty()) 56 search_string = last_search_prepopulate_text; 57 else 58 return; 59 } 60 61 // Keep track of the previous search. 62 previous_find_text_ = find_text_; 63 64 // This is a FindNext operation if we are searching for the same text again, 65 // or if the passed in search text is empty (FindNext keyboard shortcut). The 66 // exception to this is if the Find was aborted (then we don't want FindNext 67 // because the highlighting has been cleared and we need it to reappear). We 68 // therefore treat FindNext after an aborted Find operation as a full fledged 69 // Find. 70 bool find_next = (find_text_ == search_string || search_string.empty()) && 71 (last_search_case_sensitive_ == case_sensitive) && 72 !find_op_aborted_; 73 if (!find_next) 74 current_find_request_id_ = find_request_id_counter_++; 75 76 if (!search_string.empty()) 77 find_text_ = search_string; 78 last_search_case_sensitive_ = case_sensitive; 79 80 find_op_aborted_ = false; 81 82 // Keep track of what the last search was across the tabs. 83 Profile* profile = 84 Profile::FromBrowserContext(web_contents()->GetBrowserContext()); 85 FindBarState* find_bar_state = FindBarStateFactory::GetForProfile(profile); 86 find_bar_state->set_last_prepopulate_text(find_text_); 87 88 WebFindOptions options; 89 options.forward = forward_direction; 90 options.matchCase = case_sensitive; 91 options.findNext = find_next; 92 web_contents()->Find(current_find_request_id_, find_text_, options); 93 } 94 95 void FindTabHelper::StopFinding( 96 FindBarController::SelectionAction selection_action) { 97 if (selection_action == FindBarController::kClearSelectionOnPage) { 98 // kClearSelection means the find string has been cleared by the user, but 99 // the UI has not been dismissed. In that case we want to clear the 100 // previously remembered search (http://crbug.com/42639). 101 previous_find_text_ = base::string16(); 102 } else { 103 find_ui_active_ = false; 104 if (!find_text_.empty()) 105 previous_find_text_ = find_text_; 106 } 107 find_text_.clear(); 108 find_op_aborted_ = true; 109 last_search_result_ = FindNotificationDetails(); 110 111 content::StopFindAction action; 112 switch (selection_action) { 113 case FindBarController::kClearSelectionOnPage: 114 action = content::STOP_FIND_ACTION_CLEAR_SELECTION; 115 break; 116 case FindBarController::kKeepSelectionOnPage: 117 action = content::STOP_FIND_ACTION_KEEP_SELECTION; 118 break; 119 case FindBarController::kActivateSelectionOnPage: 120 action = content::STOP_FIND_ACTION_ACTIVATE_SELECTION; 121 break; 122 default: 123 NOTREACHED(); 124 action = content::STOP_FIND_ACTION_KEEP_SELECTION; 125 } 126 web_contents()->StopFinding(action); 127 } 128 129 #if defined(OS_ANDROID) 130 void FindTabHelper::ActivateNearestFindResult(float x, float y) { 131 if (!find_op_aborted_ && !find_text_.empty()) { 132 web_contents()->GetRenderViewHost()->ActivateNearestFindResult( 133 current_find_request_id_, x, y); 134 } 135 } 136 137 void FindTabHelper::RequestFindMatchRects(int current_version) { 138 if (!find_op_aborted_ && !find_text_.empty()) 139 web_contents()->GetRenderViewHost()->RequestFindMatchRects(current_version); 140 } 141 #endif 142 143 void FindTabHelper::HandleFindReply(int request_id, 144 int number_of_matches, 145 const gfx::Rect& selection_rect, 146 int active_match_ordinal, 147 bool final_update) { 148 // Ignore responses for requests that have been aborted. 149 // Ignore responses for requests other than the one we have most recently 150 // issued. That way we won't act on stale results when the user has 151 // already typed in another query. 152 if (!find_op_aborted_ && request_id == current_find_request_id_) { 153 if (number_of_matches == -1) 154 number_of_matches = last_search_result_.number_of_matches(); 155 if (active_match_ordinal == -1) 156 active_match_ordinal = last_search_result_.active_match_ordinal(); 157 158 gfx::Rect selection = selection_rect; 159 if (final_update && active_match_ordinal == 0) 160 selection = gfx::Rect(); 161 else if (selection_rect.IsEmpty()) 162 selection = last_search_result_.selection_rect(); 163 164 // Notify the UI, automation and any other observers that a find result was 165 // found. 166 last_search_result_ = FindNotificationDetails( 167 request_id, number_of_matches, selection, active_match_ordinal, 168 final_update); 169 content::NotificationService::current()->Notify( 170 chrome::NOTIFICATION_FIND_RESULT_AVAILABLE, 171 content::Source<WebContents>(web_contents()), 172 content::Details<FindNotificationDetails>(&last_search_result_)); 173 } 174 } 175