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Diffstat (limited to 'src/assistant/help/qhelpfiltersettings.cpp')
| -rw-r--r-- | src/assistant/help/qhelpfiltersettings.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/assistant/help/qhelpfiltersettings.cpp b/src/assistant/help/qhelpfiltersettings.cpp new file mode 100644 index 000000000..206692179 --- /dev/null +++ b/src/assistant/help/qhelpfiltersettings.cpp @@ -0,0 +1,170 @@ +/**************************************************************************** +** +** Copyright (C) 2020 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt Assistant 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 "qhelpfiltersettings_p.h" +#include "qhelpfilterdata.h" + +#include <QtCore/QMap> +#include <QtHelp/QHelpFilterEngine> + +QT_BEGIN_NAMESPACE + +class QHelpFilterSettingsPrivate : public QSharedData +{ +public: + QHelpFilterSettingsPrivate() = default; + QHelpFilterSettingsPrivate(const QHelpFilterSettingsPrivate &other) = default; + ~QHelpFilterSettingsPrivate() = default; + + QMap<QString, QHelpFilterData> m_filterToData; + QString m_currentFilter; +}; + +QHelpFilterSettings::QHelpFilterSettings() + : d(new QHelpFilterSettingsPrivate) +{ +} + +QHelpFilterSettings::QHelpFilterSettings(const QHelpFilterSettings &) = default; + +QHelpFilterSettings::QHelpFilterSettings(QHelpFilterSettings &&) = default; + +QHelpFilterSettings::~QHelpFilterSettings() = default; + +QHelpFilterSettings &QHelpFilterSettings::operator=(const QHelpFilterSettings &) = default; + +QHelpFilterSettings &QHelpFilterSettings::operator=(QHelpFilterSettings &&) = default; + +void QHelpFilterSettings::setFilter(const QString &filterName, + const QHelpFilterData &filterData) +{ + d->m_filterToData.insert(filterName, filterData); +} + +void QHelpFilterSettings::removeFilter(const QString &filterName) +{ + d->m_filterToData.remove(filterName); +} + +QStringList QHelpFilterSettings::filterNames() const +{ + return d->m_filterToData.keys(); +} + +QHelpFilterData QHelpFilterSettings::filterData(const QString &filterName) const +{ + return d->m_filterToData.value(filterName); +} + +QMap<QString, QHelpFilterData> QHelpFilterSettings::filters() const +{ + return d->m_filterToData; +} + +void QHelpFilterSettings::setCurrentFilter(const QString &filterName) +{ + d->m_currentFilter = filterName; +} + +QString QHelpFilterSettings::currentFilter() const +{ + return d->m_currentFilter; +} + +QHelpFilterSettings QHelpFilterSettings::readSettings(const QHelpFilterEngine *filterEngine) +{ + QHelpFilterSettings filterSettings; + + const QStringList allFilters = filterEngine->filters(); + for (const QString &filter : allFilters) + filterSettings.setFilter(filter, filterEngine->filterData(filter)); + + filterSettings.setCurrentFilter(filterEngine->activeFilter()); + + return filterSettings; +} + +static QMap<QString, QHelpFilterData> subtract(const QMap<QString, QHelpFilterData> &minuend, + const QMap<QString, QHelpFilterData> &subtrahend) +{ + QMap<QString, QHelpFilterData> result = minuend; + + for (auto itSubtrahend = subtrahend.cbegin(); itSubtrahend != subtrahend.cend(); ++itSubtrahend) { + auto itResult = result.find(itSubtrahend.key()); + if (itResult != result.end() && itSubtrahend.value() == itResult.value()) + result.erase(itResult); + } + + return result; +} + +bool QHelpFilterSettings::applySettings(QHelpFilterEngine *filterEngine, + const QHelpFilterSettings &settings) +{ + bool changed = false; + const QHelpFilterSettings oldSettings = readSettings(filterEngine); + + const QMap<QString, QHelpFilterData> filtersToRemove = subtract( + oldSettings.filters(), + settings.filters()); + const QMap<QString, QHelpFilterData> filtersToAdd = subtract( + settings.filters(), + oldSettings.filters()); + + const QString ¤tFilter = filterEngine->activeFilter(); + + for (const QString &filter : filtersToRemove.keys()) { + filterEngine->removeFilter(filter); + if (currentFilter == filter && !filtersToAdd.contains(filter)) + filterEngine->setActiveFilter(QString()); + changed = true; + } + + for (auto it = filtersToAdd.cbegin(); it != filtersToAdd.cend(); ++it) { + filterEngine->setFilterData(it.key(), it.value()); + changed = true; + } + + if (changed) + filterEngine->setActiveFilter(settings.currentFilter()); + + return changed; +} + +QT_END_NAMESPACE |