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503 | /* ============================================================
*
* This file is a part of digiKam project
* https://www.digikam.org
*
* Date : 2009-07-16
* Description : metadata selector.
*
* SPDX-FileCopyrightText: 2009-2025 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* ============================================================ */
#include "metadataselector.h"
// Qt includes
#include <QHeaderView>
#include <QGridLayout>
#include <QApplication>
#include <QPushButton>
#include <QStyle>
// KDE includes
#include <klocalizedstring.h>
// Local includes
#include "ditemtooltip.h"
#include "mdkeylistviewitem.h"
#include "digikam_globals.h"
namespace Digikam
{
MetadataSelectorItem::MetadataSelectorItem(MdKeyListViewItem* const parent,
const QString& key,
const QString& title,
const QString& desc)
: QTreeWidgetItem(parent),
m_key (key),
m_parent (parent)
{
setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable);
setCheckState(0, Qt::Unchecked);
setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator);
setText(0, title);
setToolTip(0, key);
QString descVal = desc.simplified();
if (descVal.length() > 512)
{
descVal.truncate(512);
descVal.append(QLatin1String("..."));
}
setText(1, descVal);
DToolTipStyleSheet cnt;
setToolTip(1, QLatin1String
("<qt><p>") + cnt.breakString(descVal) + QLatin1String("</p></qt>"));
}
QString MetadataSelectorItem::key() const
{
return m_key;
}
QString MetadataSelectorItem::mdKeyTitle() const
{
return (m_parent ? m_parent->text(0) : QString());
}
// ------------------------------------------------------------------------------------
MetadataSelector::MetadataSelector(MetadataSelectorView* const parent)
: QTreeWidget(parent),
m_parent (parent)
{
setSelectionMode(QAbstractItemView::SingleSelection);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
setAllColumnsShowFocus(true);
setUniformRowHeights(true);
setColumnCount(2);
QStringList labels;
labels.append(i18nc("@title: metadata properties", "Name"));
labels.append(i18nc("@title: metadata properties", "Description"));
setHeaderLabels(labels);
header()->setSectionResizeMode(0, QHeaderView::ResizeToContents);
header()->setSectionResizeMode(1, QHeaderView::Stretch);
setSortingEnabled(true);
sortByColumn(0, Qt::AscendingOrder);
}
void MetadataSelector::setTagsMap(const DMetadata::TagsMap& map)
{
clear();
uint subItems = 0;
QString ifDItemName, currentIfDName;
MdKeyListViewItem* parentifDItem = nullptr;
QList<QTreeWidgetItem*> toplevelItems;
for (DMetadata::TagsMap::const_iterator it = map.constBegin();
it != map.constEnd(); ++it)
{
// Check if we have changed group.
if (m_parent->backend() == MetadataSelectorView::Exiv2Backend)
{
currentIfDName = it.key().section(QLatin1Char('.'), 1, 1);
}
else
{
currentIfDName = it.key().section(QLatin1Char('.'), 0, 0);
}
if (currentIfDName != ifDItemName)
{
ifDItemName = currentIfDName;
// Remove the group header if it has no items.
if ((subItems == 0) && parentifDItem)
{
delete parentifDItem;
}
parentifDItem = new MdKeyListViewItem(nullptr, currentIfDName);
toplevelItems << parentifDItem;
subItems = 0;
}
// Ignore all unknown Exif tags.
if (!it.key().section(QLatin1Char('.'), 2, 2).startsWith(QLatin1String("0x")))
{
new MetadataSelectorItem(parentifDItem, it.key(),
it.value().at(0), // Name
it.value().at(2)); // Description
++subItems;
}
}
addTopLevelItems(toplevelItems);
// We need to call setFirstColumnSpanned() in here again because the
// widgets were added parentless and therefore no layout information was
// present at construction time. Now that all items have a parent, we need
// to trigger the method again.
for (QList<QTreeWidgetItem*>::const_iterator it = toplevelItems.constBegin() ;
it != toplevelItems.constEnd() ; ++it)
{
if (*it)
{
(*it)->setFirstColumnSpanned(true);
}
}
expandAll();
}
void MetadataSelector::setcheckedTagsList(const QStringList& list)
{
QTreeWidgetItemIterator it(this);
while (*it)
{
MetadataSelectorItem* const item = dynamic_cast<MetadataSelectorItem*>(*it);
if (item && list.contains(item->key()))
{
item->setCheckState(0, Qt::Checked);
}
++it;
}
}
QStringList MetadataSelector::checkedTagsList()
{
QStringList list;
QTreeWidgetItemIterator it(this, QTreeWidgetItemIterator::Checked);
while (*it)
{
MetadataSelectorItem* const item = dynamic_cast<MetadataSelectorItem*>(*it);<--- Variable 'item' can be declared as pointer to const
if (item)
{
list.append(item->key());
}
++it;
}
return list;
}
void MetadataSelector::clearSelection()
{
collapseAll();
QTreeWidgetItemIterator it(this, QTreeWidgetItemIterator::Checked);
while (*it)
{
MetadataSelectorItem* const item = dynamic_cast<MetadataSelectorItem*>(*it);
if (item)
{
item->setCheckState(0, Qt::Unchecked);
}
++it;
}
expandAll();
}
void MetadataSelector::selectAll()
{
collapseAll();
QTreeWidgetItemIterator it(this, QTreeWidgetItemIterator::NotChecked);
while (*it)
{
MetadataSelectorItem* const item = dynamic_cast<MetadataSelectorItem*>(*it);
if (item)
{
item->setCheckState(0, Qt::Checked);
}
++it;
}
expandAll();
}
// ------------------------------------------------------------------------------------
class Q_DECL_HIDDEN MetadataSelectorView::Private
{
public:
Private() = default;
QStringList defaultFilter;
QPushButton* selectAllBtn = nullptr;
QPushButton* clearSelectionBtn = nullptr;
QPushButton* defaultSelectionBtn = nullptr;
MetadataSelector* selector = nullptr;
SearchTextBar* searchBar = nullptr;
Backend backend = Exiv2Backend;
};
MetadataSelectorView::MetadataSelectorView(QWidget* const parent, Backend be)
: QWidget(parent),
d (new Private)
{
d->backend = be;
const int spacing = layoutSpacing();
QGridLayout* const grid = new QGridLayout(this);
d->selector = new MetadataSelector(this);
d->searchBar = new SearchTextBar(this, QLatin1String("MetadataSelectorView"));
d->selectAllBtn = new QPushButton(i18nc("@action: metadata selector", "Select All"),this);
d->clearSelectionBtn = new QPushButton(i18nc("@action: metadata selector", "Clear"),this);
d->defaultSelectionBtn = new QPushButton(i18nc("@action: metadata selector", "Default"),this);
grid->addWidget(d->selector, 0, 0, 1, 5);
grid->addWidget(d->searchBar, 1, 0, 1, 1);
grid->addWidget(d->selectAllBtn, 1, 2, 1, 1);
grid->addWidget(d->clearSelectionBtn, 1, 3, 1, 1);
grid->addWidget(d->defaultSelectionBtn, 1, 4, 1, 1);
grid->setColumnStretch(0, 10);
grid->setRowStretch(0, 10);
grid->setContentsMargins(spacing, spacing, spacing, spacing);
grid->setSpacing(spacing);
setControlElements(SearchBar | SelectAllBtn | DefaultBtn | ClearBtn);
connect(d->searchBar, SIGNAL(signalSearchTextSettings(SearchTextSettings)),
this, SLOT(slotSearchTextChanged(SearchTextSettings)));
connect(d->selectAllBtn, SIGNAL(clicked()),
this, SLOT(slotSelectAll()));
connect(d->defaultSelectionBtn, SIGNAL(clicked()),
this, SLOT(slotDeflautSelection()));
connect(d->clearSelectionBtn, SIGNAL(clicked()),
this, SLOT(slotClearSelection()));
}
MetadataSelectorView::~MetadataSelectorView()
{
delete d;
}
void MetadataSelectorView::setTagsMap(const DMetadata::TagsMap& map)
{
d->selector->setTagsMap(map);
}
void MetadataSelectorView::setcheckedTagsList(const QStringList& list)
{
d->selector->setcheckedTagsList(list);
}
void MetadataSelectorView::setDefaultFilter(const QStringList& list)
{
d->defaultFilter = list;
}
QStringList MetadataSelectorView::defaultFilter() const
{
return d->defaultFilter;
}
int MetadataSelectorView::itemsCount() const
{
return d->selector->model()->rowCount();
}
MetadataSelectorView::Backend MetadataSelectorView::backend() const
{
return d->backend;
}
QStringList MetadataSelectorView::checkedTagsList() const
{
d->searchBar->clear();
return d->selector->checkedTagsList();
}
void MetadataSelectorView::slotSearchTextChanged(const SearchTextSettings& settings)
{
QString search = settings.text;
bool atleastOneMatch = false;
// Restore all MdKey items.
QTreeWidgetItemIterator it2(d->selector);
while (*it2)
{
MdKeyListViewItem* const item = dynamic_cast<MdKeyListViewItem*>(*it2);
if (item)
{
item->setHidden(false);
}
++it2;
}
QTreeWidgetItemIterator it(d->selector);
while (*it)
{
MetadataSelectorItem* const item = dynamic_cast<MetadataSelectorItem*>(*it);
if (item)
{
bool match = item->text(0).contains(search, settings.caseSensitive) ||
item->mdKeyTitle().contains(search, settings.caseSensitive);
if (match)
{
atleastOneMatch = true;
item->setHidden(false);
}
else
{
item->setHidden(true);
}
}
++it;
}
// If we found MdKey items alone, we hide it...
cleanUpMdKeyItem();
d->searchBar->slotSearchResult(atleastOneMatch);
}
void MetadataSelectorView::cleanUpMdKeyItem()
{
QTreeWidgetItemIterator it(d->selector);
while (*it)
{
MdKeyListViewItem* const item = dynamic_cast<MdKeyListViewItem*>(*it);
if (item)
{
int children = item->childCount();
int visibles = 0;
for (int i = 0 ; i < children ; ++i)
{
QTreeWidgetItem* const citem = (*it)->child(i);
if (!citem->isHidden())
{
++visibles;
}
}
if (!children || !visibles)
{
item->setHidden(true);
}
}
++it;
}
}
void MetadataSelectorView::slotDeflautSelection()
{
slotClearSelection();
QApplication::setOverrideCursor(Qt::WaitCursor);
d->selector->collapseAll();
QTreeWidgetItemIterator it(d->selector);
while (*it)
{
MetadataSelectorItem* const item = dynamic_cast<MetadataSelectorItem*>(*it);
if (item)
{
if (d->defaultFilter.contains(item->text(0)))
{
item->setCheckState(0, Qt::Checked);
}
}
++it;
}
d->selector->expandAll();
QApplication::restoreOverrideCursor();
}
void MetadataSelectorView::slotSelectAll()
{
QApplication::setOverrideCursor(Qt::WaitCursor);
d->selector->selectAll();
QApplication::restoreOverrideCursor();
}
void MetadataSelectorView::slotClearSelection()
{
QApplication::setOverrideCursor(Qt::WaitCursor);
d->selector->clearSelection();
QApplication::restoreOverrideCursor();
}
void MetadataSelectorView::setControlElements(ControlElements controllerMask)
{
d->searchBar->setVisible(controllerMask & SearchBar);
d->selectAllBtn->setVisible(controllerMask & SelectAllBtn);
d->clearSelectionBtn->setVisible(controllerMask & ClearBtn);
d->defaultSelectionBtn->setVisible(controllerMask & DefaultBtn);
}
void MetadataSelectorView::clearSelection()
{
slotClearSelection();
}
void MetadataSelectorView::selectAll()
{
slotSelectAll();
}
void MetadataSelectorView::selectDefault()
{
slotDeflautSelection();
}
} // namespace Digikam
#include "moc_metadataselector.cpp"
|