File indexing completed on 2024-04-21 04:39:57

 /*
     SPDX-FileCopyrightText: 2012-2014 Vishesh Handa <vhanda@kde.org>
 
     Code largely copied/adapted from KFileMetadataProvider
     SPDX-FileCopyrightText: 2010 Peter Penz <peter.penz@gmx.at>
 
     SPDX-License-Identifier: LGPL-2.1-or-later
 */
 
 #include "widgetfactory.h"
 #include "KRatingWidget"
 #include "filemetadatautil_p.h"
 #include "kcommentwidget_p.h"
 #include "tagwidget.h"
 
 #include <KFileMetaData/PropertyInfo>
 #include <KFileMetaData/UserMetaData>
 
 #include <QCollator>
 #include <QLabel>
 #include <QLocale>
 #include <QTime>
 #include <QUrl>
 
 #include <KApplicationTrader>
 #include <KFormat>
 #include <KLocalizedString>
 #include <KStringHandler>
 
 using namespace Baloo;
 
 WidgetFactory::WidgetFactory(QObject *parent)
     : QObject(parent)
     , m_dateFormat(QLocale::LongFormat)
 {
 }
 
 WidgetFactory::~WidgetFactory() = default;
 
 //
 // Widget Creation
 //
 static QString formatDateTime(const QVariant &value, QLocale::FormatType dateFormat)
 {
     const QString valueString = value.toString();
     QDateTime dt = QDateTime::fromString(valueString, Qt::ISODate);
 
     if (dt.isValid()) {
         KFormat form;
         QTime time = dt.time();
         // Check if Date/DateTime
         if (!time.hour() && !time.minute() && !time.second()) {
             return form.formatRelativeDate(dt.date(), dateFormat);
         } else {
             return form.formatRelativeDateTime(dt, dateFormat);
         }
     }
 
     return valueString;
 }
 
 static QString toString(const QVariant &value, QLocale::FormatType dateFormat)
 {
     switch (value.type()) {
     case QVariant::Int:
         return QLocale().toString(value.toInt());
     case QVariant::Double:
         return QLocale().toString(value.toDouble());
     case QVariant::StringList:
         return value.toStringList().join(i18nc("String list separator", ", "));
     case QVariant::Date:
     case QVariant::DateTime: {
         return formatDateTime(value, dateFormat);
     }
     case QVariant::List: {
         QStringList list;
         const auto valueList = value.toList();
         for (const QVariant &var : valueList) {
             list << toString(var, dateFormat);
         }
         return list.join(i18nc("String list separator", ", "));
     }
 
     default:
         return value.toString();
     }
 }
 
 QWidget *WidgetFactory::createWidget(const QString &prop, const QVariant &value, QWidget *parent)
 {
     QWidget *widget = nullptr;
     const int maxUrlLength = 80;
 
     if (prop == QLatin1String("rating")) {
         widget = createRatingWidget(value.toInt(), parent);
     } else if (prop == QLatin1String("userComment")) {
         widget = createCommentWidget(value.toString(), parent);
     } else if (prop == QLatin1String("tags")) {
         widget = createTagWidget(Baloo::Private::sortTags(value.toStringList()), parent);
     } else if (prop == QLatin1String("gpsLocation")) {
         const auto pair = value.value<QPair<float, float>>();
         const auto latitude = pair.first;
         const auto longitude = pair.second;
 
         const QString latitudeStr = latitude < 0 ? i18nc("Latitude (South)", "%1°S", -latitude) : i18nc("Latitude (North)", "%1°N", latitude);
         const QString longitudeStr = longitude < 0 ? i18nc("Longitude (West)", "%1°W", -longitude) : i18nc("Longitude (East)", "%1°E", longitude);
         const QString gpsLocationStr = latitudeStr + QLatin1Char(' ') + longitudeStr;
 
         if (const auto geoService = KApplicationTrader::preferredService(QStringLiteral("x-scheme-handler/geo"))) {
             const QString geoUri = QStringLiteral("geo:%1,%2").arg(latitude).arg(longitude);
             QLabel *valueWidget = createLinkWidget(parent);
 
             valueWidget->setText(QStringLiteral("<a href='%1'>%2</a>").arg(geoUri, gpsLocationStr));
             valueWidget->setToolTip(i18nc("@info:tooltip Show location in map viewer", "Show location in %1", geoService->name()));
             widget = valueWidget;
         } else {
             QLabel *valueWidget = createValueWidget(parent);
             valueWidget->setText(gpsLocationStr);
             widget = valueWidget;
         }
 
     } else if (prop == QLatin1String("originUrl")) {
         QLabel *valueWidget = createLinkWidget(parent);
         QString valueString = value.toUrl().toString();
         // Shrink link label
         auto labelString = KStringHandler::csqueeze(valueString, maxUrlLength);
         valueString = QStringLiteral("<a href=\"%1\">%2</a>").arg(valueString, labelString);
         valueWidget->setText(valueString);
         widget = valueWidget;
 
     } else {
         QString valueString;
         QLabel *valueWidget = createValueWidget(parent);
 
         auto pi = KFileMetaData::PropertyInfo::fromName(prop);
         if (pi.property() != KFileMetaData::Property::Empty) {
             if (pi.valueType() == QVariant::DateTime || pi.valueType() == QVariant::Date) {
                 valueString = formatDateTime(value, m_dateFormat);
             } else {
                 valueString = pi.formatAsDisplayString(value);
             }
         } else {
             valueString = toString(value, m_dateFormat);
         }
 
         valueWidget->setText(valueString);
         widget = valueWidget;
     }
 
     widget->setForegroundRole(parent->foregroundRole());
     widget->setFont(parent->font());
     widget->setObjectName(prop);
     return widget;
 }
 
 QWidget *WidgetFactory::createTagWidget(const QStringList &tags, QWidget *parent)
 {
     auto tagWidget = new TagWidget(parent);
     tagWidget->setReadyOnly(m_readOnly);
     tagWidget->setSelectedTags(tags);
 
     connect(tagWidget, &TagWidget::selectionChanged, this, &WidgetFactory::slotTagsChanged);
     connect(tagWidget, &TagWidget::tagClicked, this, [this](const QString &tag) {
         QUrl url;
         url.setScheme(QStringLiteral("tags"));
         url.setPath(tag);
         Q_EMIT urlActivated(url);
     });
 
     m_tagWidget = tagWidget;
     m_prevTags = tags;
 
     return tagWidget;
 }
 
 QWidget *WidgetFactory::createCommentWidget(const QString &comment, QWidget *parent)
 {
     auto commentWidget = new KCommentWidget(parent);
     commentWidget->setText(comment);
     commentWidget->setReadOnly(m_readOnly);
 
     connect(commentWidget, &KCommentWidget::commentChanged, this, &WidgetFactory::slotCommentChanged);
 
     m_commentWidget = commentWidget;
 
     return commentWidget;
 }
 
 QWidget *WidgetFactory::createRatingWidget(int rating, QWidget *parent)
 {
     auto ratingWidget = new KRatingWidget(parent);
     const Qt::Alignment align = (ratingWidget->layoutDirection() == Qt::LeftToRight) ? Qt::AlignLeft : Qt::AlignRight;
     ratingWidget->setAlignment(align);
     ratingWidget->setRating(rating);
     const QFontMetrics metrics(parent->font());
     ratingWidget->setPixmapSize(metrics.height());
 
     connect(ratingWidget, static_cast<void (KRatingWidget::*)(int)>(&KRatingWidget::ratingChanged), this, &WidgetFactory::slotRatingChanged);
 
     m_ratingWidget = ratingWidget;
 
     return ratingWidget;
 }
 
 // The default size hint of QLabel tries to return a square size.
 // This does not work well in combination with layouts that use
 // heightForWidth(): In this case it is possible that the content
 // of a label might get clipped. By specifying a size hint
 // with a maximum width that is necessary to contain the whole text,
 // using heightForWidth() assures having a non-clipped text.
 class ValueWidget : public QLabel
 {
 public:
     explicit ValueWidget(QWidget *parent = nullptr);
     QSize sizeHint() const override;
 };
 
 ValueWidget::ValueWidget(QWidget *parent)
     : QLabel(parent)
 {
 }
 
 QSize ValueWidget::sizeHint() const
 {
     QFontMetrics metrics(font());
     // TODO: QLabel internally provides already a method sizeForWidth(),
     // that would be sufficient. However this method is not accessible.
     return metrics.size(Qt::TextSingleLine, text());
 }
 
 QLabel *WidgetFactory::createValueWidget(QWidget *parent)
 {
     auto valueWidget = new ValueWidget(parent);
     valueWidget->setWordWrap(true);
     valueWidget->setAlignment(Qt::AlignTop | Qt::AlignLeft);
 
     valueWidget->setTextInteractionFlags(Qt::TextSelectableByMouse);
     valueWidget->setTextFormat(Qt::PlainText);
 
     return valueWidget;
 }
 
 QLabel *WidgetFactory::createLinkWidget(QWidget *parent)
 {
     auto valueWidget = new ValueWidget(parent);
     valueWidget->setWordWrap(true);
     valueWidget->setAlignment(Qt::AlignTop | Qt::AlignLeft);
 
     valueWidget->setTextInteractionFlags(Qt::TextBrowserInteraction);
     valueWidget->setTextFormat(Qt::RichText);
     connect(valueWidget, &ValueWidget::linkActivated, this, [this](const QString &url) {
         Q_EMIT this->urlActivated(QUrl::fromUserInput(url));
     });
 
     return valueWidget;
 }
 
 //
 // Data Synchronization
 //
 
 void WidgetFactory::slotCommentChanged(const QString &comment)
 {
     for (const KFileItem &item : std::as_const(m_items)) {
         QUrl url = item.targetUrl();
         if (!url.isLocalFile()) {
             continue;
         }
         KFileMetaData::UserMetaData md(url.toLocalFile());
         md.setUserComment(comment);
     }
 }
 
 void WidgetFactory::slotRatingChanged(int rating)
 {
     for (const KFileItem &item : std::as_const(m_items)) {
         QUrl url = item.targetUrl();
         if (!url.isLocalFile()) {
             continue;
         }
         KFileMetaData::UserMetaData md(url.toLocalFile());
         md.setRating(rating);
     }
 }
 
 void WidgetFactory::slotTagsChanged(const QStringList &tags)
 {
     if (m_tagWidget) {
         for (const KFileItem &item : std::as_const(m_items)) {
             QUrl url = item.targetUrl();
             if (!url.isLocalFile()) {
                 continue;
             }
             KFileMetaData::UserMetaData md(url.toLocalFile());
 
             // When multiple tags are selected one doesn't want to loose the old tags
             // of any of the resources. Unless specifically removed.
             QStringList newTags = md.tags() + tags;
             newTags.removeDuplicates();
 
             for (const QString &tag : std::as_const(m_prevTags)) {
                 if (!tags.contains(tag)) {
                     newTags.removeAll(tag);
                 }
             }
             md.setTags(newTags);
         }
 
         m_prevTags = tags;
     }
 }
 
 //
 // Accessor Methods
 //
 void WidgetFactory::setReadOnly(bool value)
 {
     m_readOnly = value;
 }
 
 void WidgetFactory::setItems(const KFileItemList &items)
 {
     m_items = items;
 }
 
 Baloo::DateFormats WidgetFactory::dateFormat() const
 {
     return static_cast<Baloo::DateFormats>(m_dateFormat);
 }
 
 void Baloo::WidgetFactory::setDateFormat(const Baloo::DateFormats format)
 {
     m_dateFormat = static_cast<QLocale::FormatType>(format);
 }
 
 #include "moc_widgetfactory.cpp"