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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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 QWebEngineCallback<bool> resultCallback)
{
if (findText.isEmpty()) {
stopFinding();
m_viewClient->findTextFinished(QWebEngineFindTextResult());
m_widgetCallbacks.invokeEmpty(resultCallback);
return;
}
startFinding(findText, caseSensitively, findBackward);
m_widgetCallbacks.registerCallback(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)
{
if (findText.isEmpty()) {
stopFinding();
return;
}
if (m_currentFindRequestId > m_lastCompletedFindRequestId) {
// 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_viewClient->findTextFinished(QWebEngineFindTextResult());
invokeResultCallback(m_currentFindRequestId, 0);
}
blink::mojom::FindOptionsPtr options = blink::mojom::FindOptions::New();
options->forward = !findBackward;
options->match_case = caseSensitively;
options->find_next = findText == m_previousFindText;
m_previousFindText = findText;
m_currentFindRequestId = m_findRequestIdCounter++;
m_webContents->Find(m_currentFindRequestId, toString16(findText), std::move(options));
}
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 activeMatchOrdinal, 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, activeMatchOrdinal));
invokeResultCallback(requestId, numberOfMatches);
}
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)
{
if (m_quickCallbacks.contains(requestId)) {
QJSValue resultCallback = m_quickCallbacks.take(requestId);
QJSValueList args;
args.append(QJSValue(numberOfMatches));
resultCallback.call(args);
} else {
m_widgetCallbacks.invoke(requestId, numberOfMatches > 0);
}
}
} // namespace QtWebEngineCore
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