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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/find_in_page/find_tab_helper.h"
#include <utility>
#include "base/observer_list.h"
#include "base/strings/string_util.h"
#include "build/build_config.h"
#include "components/find_in_page/find_result_observer.h"
#include "components/find_in_page/find_types.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/stop_find_action.h"
#include "third_party/blink/public/mojom/frame/find_in_page.mojom.h"
#include "ui/gfx/geometry/rect_f.h"
using content::WebContents;
namespace find_in_page {
// static
int FindTabHelper::find_request_id_counter_ = -1;
FindTabHelper::FindTabHelper(WebContents* web_contents)
: content::WebContentsUserData<FindTabHelper>(*web_contents),
current_find_request_id_(find_request_id_counter_++),
current_find_session_id_(current_find_request_id_) {}
FindTabHelper::~FindTabHelper() {
for (auto& observer : observers_)
observer.OnFindTabHelperDestroyed(this);
}
void FindTabHelper::AddObserver(FindResultObserver* observer) {
observers_.AddObserver(observer);
}
void FindTabHelper::RemoveObserver(FindResultObserver* observer) {
observers_.RemoveObserver(observer);
}
void FindTabHelper::StartFinding(std::u16string search_string,
bool forward_direction,
bool case_sensitive,
bool find_match,
bool run_synchronously_for_testing) {
// Remove the carriage return character, which generally isn't in web content.
const char16_t kInvalidChars[] = u"\r";
base::RemoveChars(search_string, kInvalidChars, &search_string);
is_find_session_active_ = true;
// Keep track of what the last search was across the tabs.
if (delegate_)
delegate_->SetLastSearchText(search_string);
if (search_string.empty()) {
StopFinding(find_in_page::SelectionAction::kClear);
for (auto& observer : observers_)
observer.OnFindEmptyText(&GetWebContents());
return;
}
bool new_session = find_text_ != search_string ||
(last_search_case_sensitive_ != case_sensitive) ||
find_op_aborted_;
// Continuing here would just find the same results, potentially causing
// some flicker in the highlighting.
if (!new_session && !find_match)
return;
current_find_request_id_ = find_request_id_counter_++;
if (new_session)
current_find_session_id_ = current_find_request_id_;
previous_find_text_ = find_text_;
find_text_ = search_string;
last_search_case_sensitive_ = case_sensitive;
find_op_aborted_ = false;
should_find_match_ = find_match;
auto options = blink::mojom::FindOptions::New();
options->forward = forward_direction;
options->match_case = case_sensitive;
options->new_session = new_session;
options->find_match = find_match;
options->run_synchronously_for_testing = run_synchronously_for_testing;
GetWebContents().Find(current_find_request_id_, find_text_,
std::move(options), /*skip_delay=*/false);
}
void FindTabHelper::StopFinding(SelectionAction selection_action) {
if (selection_action == SelectionAction::kClear) {
// 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_ = std::u16string();
} else {
find_ui_active_ = false;
if (!find_text_.empty())
previous_find_text_ = find_text_;
}
find_text_.clear();
last_completed_find_text_.clear();
find_op_aborted_ = true;
last_search_result_ = FindNotificationDetails();
should_find_match_ = false;
is_find_session_active_ = false;
content::StopFindAction action;
switch (selection_action) {
case SelectionAction::kClear:
action = content::STOP_FIND_ACTION_CLEAR_SELECTION;
break;
case SelectionAction::kKeep:
action = content::STOP_FIND_ACTION_KEEP_SELECTION;
break;
case SelectionAction::kActivate:
action = content::STOP_FIND_ACTION_ACTIVATE_SELECTION;
break;
default:
NOTREACHED();
}
GetWebContents().StopFinding(action);
}
void FindTabHelper::ActivateFindInPageResultForAccessibility() {
GetWebContents()
.GetPrimaryMainFrame()
->ActivateFindInPageResultForAccessibility(current_find_request_id_);
}
std::u16string FindTabHelper::GetInitialSearchText() {
// Try the last thing we searched for in this tab.
if (!previous_find_text_.empty())
return previous_find_text_;
// Then defer to the delegate.
return delegate_ ? delegate_->GetSearchPrepopulateText() : std::u16string();
}
#if BUILDFLAG(IS_ANDROID)
void FindTabHelper::ActivateNearestFindResult(float x, float y) {
if (!find_op_aborted_ && !find_text_.empty()) {
GetWebContents().ActivateNearestFindResult(x, y);
}
}
void FindTabHelper::RequestFindMatchRects(int current_version) {
if (!find_op_aborted_ && !find_text_.empty())
GetWebContents().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);
for (auto& observer : observers_)
observer.OnFindResultAvailable(&GetWebContents());
}
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(FindTabHelper);
} // namespace find_in_page
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