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/*
SPDX-FileCopyrightText: 2019 Kai Uwe Broulik <kde@privat.broulik.de>
SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
#include "notificationgroupcollapsingproxymodel_p.h"
#include "notifications.h"
#include "debug.h"
using namespace NotificationManager;
NotificationGroupCollapsingProxyModel::NotificationGroupCollapsingProxyModel(QObject *parent)
: QSortFilterProxyModel(parent)
{
}
NotificationGroupCollapsingProxyModel::~NotificationGroupCollapsingProxyModel() = default;
void NotificationGroupCollapsingProxyModel::setSourceModel(QAbstractItemModel *source)
{
if (source == QAbstractProxyModel::sourceModel()) {
return;
}
if (QAbstractProxyModel::sourceModel()) {
disconnect(QAbstractProxyModel::sourceModel(), nullptr, this, nullptr);
}
QSortFilterProxyModel::setSourceModel(source);
if (source) {
connect(source, &QAbstractItemModel::rowsInserted, this, &NotificationGroupCollapsingProxyModel::invalidateFilter);
connect(source, &QAbstractItemModel::rowsRemoved, this, &NotificationGroupCollapsingProxyModel::invalidateFilter);
// When a group is removed, there is no item that's being removed, instead the item morphs back into a single notification
connect(source,
&QAbstractItemModel::dataChanged,
this,
[this, source](const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles) {
if (roles.isEmpty() || roles.contains(Notifications::IsGroupRole)) {
for (int i = topLeft.row(); i <= bottomRight.row(); ++i) {
const QModelIndex sourceIdx = source->index(i, 0);
if (!sourceIdx.data(Notifications::IsGroupRole).toBool()) {
if (m_expandedGroups.contains(sourceIdx)) {
setGroupExpanded(topLeft, false);
}
}
}
}
});
}
}
QVariant NotificationGroupCollapsingProxyModel::data(const QModelIndex &index, int role) const
{
switch (role) {
case Notifications::IsGroupExpandedRole: {
if (m_limit > 0) {
// so each item in a group knows whether the group is expanded
const QModelIndex sourceIdx = mapToSource(index);
return m_expandedGroups.contains(sourceIdx.parent().isValid() ? sourceIdx.parent() : sourceIdx);
}
return true;
}
case Notifications::ExpandedGroupChildrenCountRole:
return rowCount(index.parent().isValid() ? index.parent() : index);
}
return QSortFilterProxyModel::data(index, role);
}
bool NotificationGroupCollapsingProxyModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (role == Notifications::IsGroupExpandedRole && m_limit > 0) {
QModelIndex groupIdx = index;
// so an item inside a group can expand/collapse the group
if (groupIdx.parent().isValid()) {
groupIdx = groupIdx.parent();
}
const bool expanded = value.toBool();
if (!groupIdx.data(Notifications::IsGroupRole).toBool()) {
qCWarning(NOTIFICATIONMANAGER) << "Cannot" << (expanded ? "expand" : "collapse") << "an item isn't a group or inside of one";
return false;
}
return setGroupExpanded(groupIdx, expanded);
}
return QSortFilterProxyModel::setData(index, value, role);
}
int NotificationGroupCollapsingProxyModel::limit() const
{
return m_limit;
}
void NotificationGroupCollapsingProxyModel::setLimit(int limit)
{
if (m_limit != limit) {
m_limit = limit;
invalidateFilter();
invalidateGroupRoles();
Q_EMIT limitChanged();
}
}
QDateTime NotificationGroupCollapsingProxyModel::lastRead() const
{
return m_lastRead;
}
void NotificationGroupCollapsingProxyModel::setLastRead(const QDateTime &lastRead)
{
if (m_lastRead != lastRead) {
m_lastRead = lastRead;
invalidateFilter();
invalidateGroupRoles();
Q_EMIT lastReadChanged();
}
}
bool NotificationGroupCollapsingProxyModel::expandUnread() const
{
return m_expandUnread;
}
void NotificationGroupCollapsingProxyModel::setExpandUnread(bool expand)
{
if (m_expandUnread != expand) {
m_expandUnread = expand;
invalidateFilter();
invalidateGroupRoles();
Q_EMIT expandUnreadChanged();
}
}
void NotificationGroupCollapsingProxyModel::collapseAll()
{
m_expandedGroups.clear();
invalidateFilter();
invalidateGroupRoles();
}
bool NotificationGroupCollapsingProxyModel::setGroupExpanded(const QModelIndex &idx, bool expanded)
{
if (idx.data(Notifications::IsGroupExpandedRole).toBool() == expanded) {
return false;
}
QPersistentModelIndex persistentIdx(mapToSource(idx));
if (expanded) {
m_expandedGroups.append(persistentIdx);
} else {
m_expandedGroups.removeOne(persistentIdx);
}
invalidateFilter();
const QVector<int> dirtyRoles = {Notifications::ExpandedGroupChildrenCountRole, Notifications::IsGroupExpandedRole};
Q_EMIT dataChanged(idx, idx, dirtyRoles);
Q_EMIT dataChanged(index(0, 0, idx), index(rowCount(idx) - 1, 0, idx), dirtyRoles);
return true;
}
void NotificationGroupCollapsingProxyModel::invalidateGroupRoles()
{
const QVector<int> dirtyRoles = {Notifications::ExpandedGroupChildrenCountRole, Notifications::IsGroupExpandedRole};
Q_EMIT dataChanged(index(0, 0), index(rowCount() - 1, 0), dirtyRoles);
for (int row = 0; row < rowCount(); ++row) {
const QModelIndex groupIdx = index(row, 0);
Q_EMIT dataChanged(index(0, 0, groupIdx), index(rowCount(groupIdx) - 1, 0, groupIdx), dirtyRoles);
}
}
bool NotificationGroupCollapsingProxyModel::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
{
if (m_limit > 0 && source_parent.isValid()) {
if (!m_expandedGroups.isEmpty() && m_expandedGroups.contains(source_parent)) {
return true;
}
if (m_expandUnread && m_lastRead.isValid()) {
const QModelIndex sourceIdx = sourceModel()->index(source_row, 0, source_parent);
if (!sourceIdx.data(Notifications::ReadRole).toBool()) {
QDateTime time = sourceIdx.data(Notifications::UpdatedRole).toDateTime();
if (!time.isValid()) {
time = sourceIdx.data(Notifications::CreatedRole).toDateTime();
}
if (time.isValid() && m_lastRead < time) {
return true;
}
}
}
// should we raise the limit when there's just one group?
// FIXME why is this reversed?
// grouping proxy model seems to reverse the order?
return source_row >= sourceModel()->rowCount(source_parent) - m_limit;
}
return true;
}
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