subsurface/qt-models/filterconstraintmodel.cpp
Berthold Stoeger af9d379a41 filter: add filter constraint model
Add a model that keeps track of a list of filter constraint and makes
them accessible from Qt. Sadly, this is mostly repetitive boiler-plate
code, but this is due to Qt's model/view-API, which is a perfect example
of how *not* to design a reasonable modern API.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-09-29 16:13:03 -07:00

186 lines
6.2 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#include "filterconstraintmodel.h"
#include "core/qthelper.h" // for timestamp conversions
#include <QTime>
FilterConstraintModel::~FilterConstraintModel()
{
}
// QTime <-> seconds in integer conversion functions
static QTime secondsToTime(int seconds)
{
return QTime::fromMSecsSinceStartOfDay(seconds * 1000);
}
static int timeToSeconds(const QTime &t)
{
return t.msecsSinceStartOfDay() / 1000;
}
QVariant FilterConstraintModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid() || index.row() >= (int)constraints.size())
return QVariant();
const filter_constraint &constraint = constraints[index.row()];
switch (role) {
case TYPE_ROLE:
return constraint.type;
case IS_STAR_WIDGET_ROLE:
return filter_constraint_is_star(constraint.type);
case HAS_DATE_WIDGET_ROLE:
return filter_constraint_has_date_widget(constraint.type);
case HAS_TIME_WIDGET_ROLE:
return filter_constraint_has_time_widget(constraint.type);
case NUM_DECIMALS_ROLE:
return filter_constraint_num_decimals(constraint.type);
case NEGATE_COMBO_ROLE:
return filter_constraint_negate_list_translated();
case STRING_MODE_COMBO_ROLE:
return filter_constraint_has_string_mode(constraint.type) ?
filter_constraint_string_mode_list_translated() : QStringList();
case RANGE_MODE_COMBO_ROLE:
return filter_constraint_has_range_mode(constraint.type) ?
filter_constraint_range_mode_list_translated() : QStringList();
case MULTIPLE_CHOICE_LIST_ROLE:
return filter_contraint_multiple_choice_translated(constraint.type);
case STRING_MODE_ROLE:
return static_cast<int>(constraint.string_mode);
case RANGE_MODE_ROLE:
return static_cast<int>(constraint.range_mode);
case TYPE_DISPLAY_ROLE:
return filter_constraint_type_to_string_translated(constraint.type);
case NEGATE_DISPLAY_ROLE:
return filter_constraint_negate_to_string_translated(constraint.negate);
case STRING_MODE_DISPLAY_ROLE:
return filter_constraint_string_mode_to_string_translated(constraint.string_mode);
case RANGE_MODE_DISPLAY_ROLE:
return filter_constraint_range_mode_to_string_translated(constraint.range_mode);
case TYPE_INDEX_ROLE:
return filter_constraint_type_to_index(constraint.type);
case NEGATE_INDEX_ROLE:
return static_cast<int>(constraint.negate);
case STRING_MODE_INDEX_ROLE:
return filter_constraint_string_mode_to_index(constraint.string_mode);
case RANGE_MODE_INDEX_ROLE:
return filter_constraint_range_mode_to_index(constraint.range_mode);
case UNIT_ROLE:
return filter_constraint_get_unit(constraint.type);
case STRING_ROLE:
return filter_constraint_get_string(constraint);
case INTEGER_FROM_ROLE:
return filter_constraint_get_integer_from(constraint);
case INTEGER_TO_ROLE:
return filter_constraint_get_integer_to(constraint);
case FLOAT_FROM_ROLE:
return filter_constraint_get_float_from(constraint); // Converts from integers to metric or imperial units
case FLOAT_TO_ROLE:
return filter_constraint_get_float_to(constraint); // Converts from integers to metric or imperial units
case TIMESTAMP_FROM_ROLE:
return timestampToDateTime(filter_constraint_get_timestamp_from(constraint));
case TIMESTAMP_TO_ROLE:
return timestampToDateTime(filter_constraint_get_timestamp_to(constraint));
case TIME_FROM_ROLE:
return secondsToTime(filter_constraint_get_integer_from(constraint));
case TIME_TO_ROLE:
return secondsToTime(filter_constraint_get_integer_from(constraint));
case MULTIPLE_CHOICE_ROLE:
return (qulonglong)filter_constraint_get_multiple_choice(constraint);
}
return QVariant();
}
bool FilterConstraintModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (!index.isValid() || index.row() > (int)constraints.size())
return false;
filter_constraint &constraint = constraints[index.row()];
switch (role) {
case NEGATE_INDEX_ROLE:
constraint.negate = value.value<bool>();
break;
case STRING_ROLE:
filter_constraint_set_stringlist(constraint, value.value<QString>());
break;
case STRING_MODE_INDEX_ROLE:
constraint.string_mode = filter_constraint_string_mode_from_index(value.value<int>());
break;
case RANGE_MODE_INDEX_ROLE:
constraint.range_mode = filter_constraint_range_mode_from_index(value.value<int>());
break;
case INTEGER_FROM_ROLE:
filter_constraint_set_integer_from(constraint, value.value<int>());
break;
case INTEGER_TO_ROLE:
filter_constraint_set_integer_to(constraint, value.value<int>());
break;
case FLOAT_FROM_ROLE:
filter_constraint_set_float_from(constraint, value.value<double>());
break;
case FLOAT_TO_ROLE:
filter_constraint_set_float_to(constraint, value.value<double>());
break;
case TIMESTAMP_FROM_ROLE:
filter_constraint_set_timestamp_from(constraint, dateTimeToTimestamp(value.value<QDateTime>()));
break;
case TIMESTAMP_TO_ROLE:
filter_constraint_set_timestamp_to(constraint, dateTimeToTimestamp(value.value<QDateTime>()));
break;
case TIME_FROM_ROLE:
filter_constraint_set_integer_from(constraint, timeToSeconds(value.value<QTime>()));
break;
case TIME_TO_ROLE:
filter_constraint_set_integer_to(constraint, timeToSeconds(value.value<QTime>()));
break;
case MULTIPLE_CHOICE_ROLE:
filter_constraint_set_multiple_choice(constraint, value.value<uint64_t>());
break;
default:
return false;
}
emit dataChanged(index, index, QVector<int> { role });
return true;
}
int FilterConstraintModel::rowCount(const QModelIndex&) const
{
return constraints.size();
}
void FilterConstraintModel::reload(const std::vector<filter_constraint> &constraintsIn)
{
beginResetModel();
constraints = constraintsIn;
endResetModel();
}
std::vector<filter_constraint> FilterConstraintModel::getConstraints() const
{
std::vector<filter_constraint> res;
res.reserve(constraints.size());
for (const filter_constraint &c: constraints) {
if (filter_constraint_is_valid(&c))
res.push_back(c);
}
return res;
}
void FilterConstraintModel::addConstraint(filter_constraint_type type)
{
int count = (int)constraints.size();
beginInsertRows(QModelIndex(), count, count);
constraints.emplace_back(type);
endInsertRows();
}
void FilterConstraintModel::deleteConstraint(int row)
{
if (row < 0 || row >= (int)constraints.size())
return;
beginRemoveRows(QModelIndex(), row, row);
constraints.erase(constraints.begin() + row);
endRemoveRows();
}