subsurface/desktop-widgets/tab-widgets/TabDiveSite.cpp
Berthold Stoeger b76f207158 Filter: split out filter from model
Split out the actual filtering from the MultiFilterSortModel.
Create a DiveFilter class that does the actual filtering.
Currently, mobile and desktop have their own version of this
class, though ultimately we may want to merge them.

The idea here is that the trip-model and undo-commands have
direct access to the filter-function and thus can take care
of keeping track of the number of shown dives, etc.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-11-19 21:13:40 -08:00

114 lines
4 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#include "TabDiveSite.h"
#include "core/subsurface-qt/DiveListNotifier.h"
#include "core/divesite.h"
#include "core/divefilter.h"
#include "qt-models/divelocationmodel.h"
#include "commands/command.h"
#include <qt-models/divecomputerextradatamodel.h>
TabDiveSite::TabDiveSite(QWidget *parent) : TabBase(parent)
{
ui.setupUi(this);
ui.diveSites->setTitle(tr("Dive sites"));
ui.diveSites->setModel(&model);
// Default: sort by name
ui.diveSites->view()->sortByColumn(LocationInformationModel::NAME, Qt::AscendingOrder);
ui.diveSites->view()->setSortingEnabled(true);
ui.diveSites->view()->horizontalHeader()->setSectionResizeMode(LocationInformationModel::NAME, QHeaderView::Stretch);
ui.diveSites->view()->horizontalHeader()->setSectionResizeMode(LocationInformationModel::DESCRIPTION, QHeaderView::Stretch);
ui.diveSites->view()->setSelectionBehavior(QAbstractItemView::SelectRows);
// Show only the first few columns
for (int i = LocationInformationModel::LOCATION; i < LocationInformationModel::COLUMNS; ++i)
ui.diveSites->view()->setColumnHidden(i, true);
connect(ui.diveSites, &TableView::addButtonClicked, this, &TabDiveSite::add);
connect(ui.diveSites->view()->selectionModel(), &QItemSelectionModel::selectionChanged, this, &TabDiveSite::selectionChanged);
// Subtle: We depend on this slot being executed after the slot in the model.
// This is realized because the model was constructed as a member object and connects in the constructor.
connect(&diveListNotifier, &DiveListNotifier::diveSiteChanged, this, &TabDiveSite::diveSiteChanged);
}
void TabDiveSite::updateData()
{
}
void TabDiveSite::clear()
{
}
void TabDiveSite::add()
{
// This is mighty dirty: We hook into the "dive site added" signal and
// select the name field of the added dive site when the command sends
// the signal. This works only because we know that the model added the
// connection first. Very subtle!
// After the command has finished, the signal is disconnected so that dive
// site names are not selected on regular redo / undo.
connect(&diveListNotifier, &DiveListNotifier::diveSiteAdded, this, &TabDiveSite::diveSiteAdded);
Command::addDiveSite(tr("New dive site"));
disconnect(&diveListNotifier, &DiveListNotifier::diveSiteAdded, this, &TabDiveSite::diveSiteAdded);
}
void TabDiveSite::diveSiteAdded(struct dive_site *, int idx)
{
if (idx < 0)
return;
QModelIndex globalIdx = LocationInformationModel::instance()->index(idx, LocationInformationModel::NAME);
QModelIndex localIdx = model.mapFromSource(globalIdx);
ui.diveSites->view()->setCurrentIndex(localIdx);
ui.diveSites->view()->edit(localIdx);
}
void TabDiveSite::diveSiteChanged(struct dive_site *ds, int field)
{
int idx = get_divesite_idx(ds, &dive_site_table);
if (idx < 0)
return;
QModelIndex globalIdx = LocationInformationModel::instance()->index(idx, field);
QModelIndex localIdx = model.mapFromSource(globalIdx);
ui.diveSites->view()->scrollTo(localIdx);
}
void TabDiveSite::on_purgeUnused_clicked()
{
Command::purgeUnusedDiveSites();
}
void TabDiveSite::on_filterText_textChanged(const QString &text)
{
model.setFilter(text);
}
QVector<dive_site *> TabDiveSite::selectedDiveSites()
{
const QModelIndexList indexes = ui.diveSites->view()->selectionModel()->selectedRows();
QVector<dive_site *> sites;
sites.reserve(indexes.size());
for (const QModelIndex &idx: indexes) {
struct dive_site *ds = model.getDiveSite(idx);
sites.append(ds);
}
return sites;
}
void TabDiveSite::selectionChanged(const QItemSelection &, const QItemSelection &)
{
DiveFilter::instance()->setFilterDiveSite(selectedDiveSites());
}
void TabDiveSite::showEvent(QShowEvent *)
{
// If the user switches to the dive site tab and there was already a selection,
// filter on that selection.
DiveFilter::instance()->startFilterDiveSites(selectedDiveSites());
}
void TabDiveSite::hideEvent(QHideEvent *)
{
// If the user switches to a different tab, stop the dive site filtering
DiveFilter::instance()->stopFilterDiveSites();
}