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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/find_bar/find_tab_helper.h"
#include <vector>
#include "base/strings/string_util.h"
#include "build/build_config.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/find_bar/find_bar_state.h"
#include "chrome/browser/ui/find_bar/find_bar_state_factory.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/stop_find_action.h"
#include "third_party/WebKit/public/web/WebFindOptions.h"
#include "ui/gfx/geometry/rect_f.h"
using blink::WebFindOptions;
using content::WebContents;
DEFINE_WEB_CONTENTS_USER_DATA_KEY(FindTabHelper);
// static
int FindTabHelper::find_request_id_counter_ = -1;
FindTabHelper::FindTabHelper(WebContents* web_contents)
: content::WebContentsObserver(web_contents),
find_ui_active_(false),
find_op_aborted_(false),
current_find_request_id_(find_request_id_counter_++),
current_find_session_id_(current_find_request_id_),
last_search_case_sensitive_(false),
last_search_result_() {
}
FindTabHelper::~FindTabHelper() {
}
void FindTabHelper::StartFinding(base::string16 search_string,
bool forward_direction,
bool case_sensitive) {
// Remove the carriage return character, which generally isn't in web content.
const base::char16 kInvalidChars[] = { '\r', 0 };
base::RemoveChars(search_string, kInvalidChars, &search_string);
// If search_string is empty, it means FindNext was pressed with a keyboard
// shortcut so unless we have something to search for we return early.
if (search_string.empty() && find_text_.empty()) {
Profile* profile =
Profile::FromBrowserContext(web_contents()->GetBrowserContext());
base::string16 last_search_prepopulate_text =
FindBarStateFactory::GetLastPrepopulateText(profile);
// Try the last thing we searched for on this tab, then the last thing
// searched for on any tab.
if (!previous_find_text_.empty())
search_string = previous_find_text_;
else if (!last_search_prepopulate_text.empty())
search_string = last_search_prepopulate_text;
else
return;
}
// Keep track of the previous search.
previous_find_text_ = find_text_;
// This is a FindNext operation if we are searching for the same text again,
// or if the passed in search text is empty (FindNext keyboard shortcut). The
// exception to this is if the Find was aborted (then we don't want FindNext
// because the highlighting has been cleared and we need it to reappear). We
// therefore treat FindNext after an aborted Find operation as a full fledged
// Find.
bool find_next = (find_text_ == search_string || search_string.empty()) &&
(last_search_case_sensitive_ == case_sensitive) &&
!find_op_aborted_;
current_find_request_id_ = find_request_id_counter_++;
if (!find_next)
current_find_session_id_ = current_find_request_id_;
if (!search_string.empty())
find_text_ = search_string;
last_search_case_sensitive_ = case_sensitive;
find_op_aborted_ = false;
// Keep track of what the last search was across the tabs.
Profile* profile =
Profile::FromBrowserContext(web_contents()->GetBrowserContext());
FindBarState* find_bar_state = FindBarStateFactory::GetForProfile(profile);
find_bar_state->set_last_prepopulate_text(find_text_);
WebFindOptions options;
options.forward = forward_direction;
options.matchCase = case_sensitive;
options.findNext = find_next;
web_contents()->Find(current_find_request_id_, find_text_, options);
}
void FindTabHelper::StopFinding(
FindBarController::SelectionAction selection_action) {
if (selection_action == FindBarController::kClearSelectionOnPage) {
// kClearSelection means the find string has been cleared by the user, but
// the UI has not been dismissed. In that case we want to clear the
// previously remembered search (http://crbug.com/42639).
previous_find_text_ = base::string16();
} else {
find_ui_active_ = false;
if (!find_text_.empty())
previous_find_text_ = find_text_;
}
find_text_.clear();
find_op_aborted_ = true;
last_search_result_ = FindNotificationDetails();
content::StopFindAction action;
switch (selection_action) {
case FindBarController::kClearSelectionOnPage:
action = content::STOP_FIND_ACTION_CLEAR_SELECTION;
break;
case FindBarController::kKeepSelectionOnPage:
action = content::STOP_FIND_ACTION_KEEP_SELECTION;
break;
case FindBarController::kActivateSelectionOnPage:
action = content::STOP_FIND_ACTION_ACTIVATE_SELECTION;
break;
default:
NOTREACHED();
action = content::STOP_FIND_ACTION_KEEP_SELECTION;
}
web_contents()->StopFinding(action);
}
void FindTabHelper::ActivateFindInPageResultForAccessibility() {
web_contents()->GetMainFrame()->ActivateFindInPageResultForAccessibility(
current_find_request_id_);
}
#if defined(OS_ANDROID)
void FindTabHelper::ActivateNearestFindResult(float x, float y) {
if (!find_op_aborted_ && !find_text_.empty()) {
web_contents()->ActivateNearestFindResult(x, y);
}
}
void FindTabHelper::RequestFindMatchRects(int current_version) {
if (!find_op_aborted_ && !find_text_.empty())
web_contents()->RequestFindMatchRects(current_version);
}
#endif
void FindTabHelper::HandleFindReply(int request_id,
int number_of_matches,
const gfx::Rect& selection_rect,
int active_match_ordinal,
bool final_update) {
// Ignore responses for requests that have been aborted.
// Ignore responses for requests from previous sessions. That way we won't act
// on stale results when the user has already typed in another query.
if (!find_op_aborted_ && request_id >= current_find_session_id_) {
if (number_of_matches == -1)
number_of_matches = last_search_result_.number_of_matches();
if (active_match_ordinal == -1)
active_match_ordinal = last_search_result_.active_match_ordinal();
gfx::Rect selection = selection_rect;
if (final_update && active_match_ordinal == 0)
selection = gfx::Rect();
else if (selection_rect.IsEmpty())
selection = last_search_result_.selection_rect();
// Notify the UI, automation and any other observers that a find result was
// found.
last_search_result_ = FindNotificationDetails(
request_id, number_of_matches, selection, active_match_ordinal,
final_update);
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_FIND_RESULT_AVAILABLE,
content::Source<WebContents>(web_contents()),
content::Details<FindNotificationDetails>(&last_search_result_));
}
}
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