cppcheck/gui/helpdialog.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2022 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "helpdialog.h"
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#include "common.h"
#include "ui_helpdialog.h"
#include <QFileInfo>
#include <QHelpEngine>
#include <QHelpContentWidget>
#include <QHelpIndexWidget>
#include <QMessageBox>
class QWidget;
void HelpBrowser::setHelpEngine(QHelpEngine *helpEngine)
{
mHelpEngine = helpEngine;
}
QVariant HelpBrowser::loadResource(int type, const QUrl &name)
{
if (name.scheme() == "qthelp") {
QString url(name.toString());
while (url.indexOf("/./") > 0)
url.remove(url.indexOf("/./"), 2);
return QVariant(mHelpEngine->fileData(QUrl(url)));
}
return QTextBrowser::loadResource(type, name);
}
static QString getHelpFile()
{
const QString datadir = getDataDir();
QStringList paths;
paths << (datadir + "/help")
<< datadir
<< (QApplication::applicationDirPath() + "/help")
<< QApplication::applicationDirPath();
#ifdef FILESDIR
const QString filesdir = FILESDIR;
paths << (filesdir + "/help")
<< filesdir;
#endif
for (const QString &p: paths) {
QString filename = p + "/online-help.qhc";
if (QFileInfo(filename).exists())
return filename;
}
return QString();
}
HelpDialog::HelpDialog(QWidget *parent) :
QDialog(parent),
mUi(new Ui::HelpDialog)
{
mUi->setupUi(this);
QString helpFile = getHelpFile();
if (helpFile.isEmpty()) {
const QString msg = tr("Helpfile '%1' was not found").arg("online-help.qhc");
QMessageBox msgBox(QMessageBox::Warning,
tr("Cppcheck"),
msg,
QMessageBox::Ok,
this);
msgBox.exec();
mHelpEngine = nullptr;
return;
}
mHelpEngine = new QHelpEngine(helpFile);
// Disable the timestamp check of online-help.qhc by setting _q_readonly
mHelpEngine->setProperty("_q_readonly", QVariant::fromValue<bool>(true));
mHelpEngine->setupData();
mUi->contents->addWidget(mHelpEngine->contentWidget());
mUi->index->addWidget(mHelpEngine->indexWidget());
mUi->textBrowser->setHelpEngine(mHelpEngine);
mUi->textBrowser->setSource(QUrl("qthelp://cppcheck.sourceforge.io/doc/index.html"));
connect(mHelpEngine->contentWidget(),
SIGNAL(linkActivated(QUrl)),
mUi->textBrowser,
SLOT(setSource(QUrl)));
connect(mHelpEngine->indexWidget(),
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SIGNAL(linkActivated(QUrl,QString)),
mUi->textBrowser,
SLOT(setSource(QUrl)));
}
HelpDialog::~HelpDialog()
{
delete mUi;
delete mHelpEngine;
}