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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "find_text_helper.h"
#include "qwebenginefindtextresult.h"
#include "type_conversion.h"
#include "web_contents_adapter_client.h"
#include "content/public/browser/web_contents.h"
#include "third_party/blink/public/mojom/frame/find_in_page.mojom.h"
namespace QtWebEngineCore {
// static
int FindTextHelper::m_findRequestIdCounter = -1;
FindTextHelper::FindTextHelper(content::WebContents *webContents, WebContentsAdapterClient *viewClient)
: m_webContents(webContents)
, m_viewClient(viewClient)
, m_currentFindRequestId(m_findRequestIdCounter++)
, m_lastCompletedFindRequestId(m_currentFindRequestId)
{
}
FindTextHelper::~FindTextHelper()
{
if (isFindTextInProgress())
stopFinding();
}
void FindTextHelper::startFinding(const QString &findText, bool caseSensitively, bool findBackward, const std::function<void(const QWebEngineFindTextResult &)> &resultCallback)
{
if (findText.isEmpty()) {
stopFinding();
m_viewClient->findTextFinished(QWebEngineFindTextResult());
if (resultCallback)
resultCallback(QWebEngineFindTextResult());
return;
}
startFinding(findText, caseSensitively, findBackward);
m_widgetCallbacks.insert(m_currentFindRequestId, resultCallback);
}
void FindTextHelper::startFinding(const QString &findText, bool caseSensitively, bool findBackward, const QJSValue &resultCallback)
{
if (findText.isEmpty()) {
stopFinding();
m_viewClient->findTextFinished(QWebEngineFindTextResult());
if (!resultCallback.isUndefined()) {
QJSValueList args;
args.append(QJSValue(0));
const_cast<QJSValue&>(resultCallback).call(args);
}
return;
}
startFinding(findText, caseSensitively, findBackward);
if (!resultCallback.isUndefined())
m_quickCallbacks.insert(m_currentFindRequestId, resultCallback);
}
void FindTextHelper::startFinding(const QString &findText, bool caseSensitively, bool findBackward)
{
Q_ASSERT(!findText.isEmpty());
const bool findNext = !m_previousFindText.isEmpty() && findText == m_previousFindText;
if (isFindTextInProgress()) {
// There are cases where the render process will overwrite a previous request
// with the new search and we'll have a dangling callback, leaving the application
// waiting for it forever.
// Assume that any unfinished find has been unsuccessful when a new one is started
// to cover that case.
m_lastCompletedFindRequestId = m_currentFindRequestId;
if (!findNext)
m_webContents->StopFinding(content::STOP_FIND_ACTION_KEEP_SELECTION);
m_viewClient->findTextFinished(QWebEngineFindTextResult());
invokeResultCallback(m_currentFindRequestId, 0, 0);
}
blink::mojom::FindOptionsPtr options = blink::mojom::FindOptions::New();
options->forward = !findBackward;
options->match_case = caseSensitively;
options->new_session = !findNext;
m_previousFindText = findText;
m_currentFindRequestId = m_findRequestIdCounter++;
m_webContents->Find(m_currentFindRequestId, toString16(findText), std::move(options), /*skip_delay=*/true);
}
void FindTextHelper::stopFinding()
{
m_lastCompletedFindRequestId = m_currentFindRequestId;
m_previousFindText = QString();
m_webContents->StopFinding(content::STOP_FIND_ACTION_KEEP_SELECTION);
}
bool FindTextHelper::isFindTextInProgress() const
{
return m_currentFindRequestId != m_lastCompletedFindRequestId;
}
void FindTextHelper::handleFindReply(content::WebContents *source, int requestId, int numberOfMatches,
const gfx::Rect &selectionRect, int activeMatch, bool finalUpdate)
{
Q_UNUSED(selectionRect);
Q_ASSERT(source == m_webContents);
if (!finalUpdate || requestId <= m_lastCompletedFindRequestId)
return;
Q_ASSERT(m_currentFindRequestId == requestId);
m_lastCompletedFindRequestId = requestId;
m_viewClient->findTextFinished(QWebEngineFindTextResult(numberOfMatches, activeMatch));
invokeResultCallback(requestId, numberOfMatches, activeMatch);
}
void FindTextHelper::handleLoadCommitted()
{
// Make sure that we don't set the findNext WebFindOptions on a new frame.
m_previousFindText = QString();
}
void FindTextHelper::invokeResultCallback(int requestId, int numberOfMatches, int activeMatch)
{
if (m_quickCallbacks.contains(requestId)) {
QJSValue resultCallback = m_quickCallbacks.take(requestId);
QJSValueList args;
args.append(QJSValue(numberOfMatches));
resultCallback.call(args);
} else if (auto func = m_widgetCallbacks.take(requestId)) {
func(QWebEngineFindTextResult(numberOfMatches, activeMatch));
}
}
} // namespace QtWebEngineCore
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