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mobile/divelist: derive MobileListModel from a base model

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In analogy to the DiveTripModel split, derive MobileListModel from a base
model that exports the roles, etc. This will allow us to create a second model,
which nevertheless possesses the same roles and all that without too much code
duplication.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-12-11 10:55:45 +01:00 • committed by Dirk Hohndel
parent 7e1ac2167b
commit 71b378aa82
2 changed files with 62 additions and 40 deletions
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71
qt-models/mobilelistmodel.cpp
View file

@ -2,23 +2,11 @@
#include "mobilelistmodel.h"
#include "core/divelist.h" // for shown_dives
MobileListModel::MobileListModel(DiveTripModelBase *sourceIn) :
source(sourceIn),
expandedRow(-1)
MobileListModelBase::MobileListModelBase(DiveTripModelBase *sourceIn) : source(sourceIn)
{
connect(source, &DiveTripModelBase::modelAboutToBeReset, this, &MobileListModel::beginResetModel);
connect(source, &DiveTripModelBase::modelReset, this, &MobileListModel::endResetModel);
connect(source, &DiveTripModelBase::rowsAboutToBeRemoved, this, &MobileListModel::prepareRemove);
connect(source, &DiveTripModelBase::rowsRemoved, this, &MobileListModel::doneRemove);
connect(source, &DiveTripModelBase::rowsAboutToBeInserted, this, &MobileListModel::prepareInsert);
connect(source, &DiveTripModelBase::rowsInserted, this, &MobileListModel::doneInsert);
connect(source, &DiveTripModelBase::rowsAboutToBeMoved, this, &MobileListModel::prepareMove);
connect(source, &DiveTripModelBase::rowsMoved, this, &MobileListModel::doneMove);
connect(source, &DiveTripModelBase::dataChanged, this, &MobileListModel::changed);
connect(&diveListNotifier, &DiveListNotifier::numShownChanged, this, &MobileListModel::shownChanged);
}
QHash<int, QByteArray> MobileListModel::roleNames() const
QHash<int, QByteArray> MobileListModelBase::roleNames() const
{
QHash<int, QByteArray> roles;
roles[DiveTripModelBase::IS_TRIP_ROLE] = "isTrip";
@ -66,6 +54,40 @@ int MobileListModel::shown() const
return shown_dives;
}
int MobileListModelBase::columnCount(const QModelIndex &parent) const
{
return source->columnCount(parent);
}
QModelIndex MobileListModelBase::index(int row, int column, const QModelIndex &parent) const
{
if (!hasIndex(row, column, parent))
return QModelIndex();
return createIndex(row, column);
}
QModelIndex MobileListModelBase::parent(const QModelIndex &index) const
{
// These are flat models - there is no parent
return QModelIndex();
}
MobileListModel::MobileListModel(DiveTripModelBase *source) : MobileListModelBase(source),
expandedRow(-1)
{
connect(source, &DiveTripModelBase::modelAboutToBeReset, this, &MobileListModel::beginResetModel);
connect(source, &DiveTripModelBase::modelReset, this, &MobileListModel::endResetModel);
connect(source, &DiveTripModelBase::rowsAboutToBeRemoved, this, &MobileListModel::prepareRemove);
connect(source, &DiveTripModelBase::rowsRemoved, this, &MobileListModel::doneRemove);
connect(source, &DiveTripModelBase::rowsAboutToBeInserted, this, &MobileListModel::prepareInsert);
connect(source, &DiveTripModelBase::rowsInserted, this, &MobileListModel::doneInsert);
connect(source, &DiveTripModelBase::rowsAboutToBeMoved, this, &MobileListModel::prepareMove);
connect(source, &DiveTripModelBase::rowsMoved, this, &MobileListModel::doneMove);
connect(source, &DiveTripModelBase::dataChanged, this, &MobileListModel::changed);
connect(&diveListNotifier, &DiveListNotifier::numShownChanged, this, &MobileListModel::shownChanged);
}
// We want to show the newest dives first. Therefore, we have to invert
// the indexes with respect to the source model. To avoid mental gymnastics
// in the rest of the code, we do this right before sending to the
@ -201,20 +223,6 @@ QModelIndex MobileListModel::mapToSource(const QModelIndex &idx) const
return sourceIndex(row - expandedRow - 1, col, expandedRow);
}
QModelIndex MobileListModel::index(int row, int column, const QModelIndex &parent) const
{
if (!hasIndex(row, column, parent))
return QModelIndex();
return createIndex(row, column);
}
QModelIndex MobileListModel::parent(const QModelIndex &index) const
{
// This is a flat model - there is no parent
return QModelIndex();
}
int MobileListModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid())
@ -222,11 +230,6 @@ int MobileListModel::rowCount(const QModelIndex &parent) const
return source->rowCount() + numSubItems();
}
int MobileListModel::columnCount(const QModelIndex &parent) const
{
return source->columnCount(parent);
}
QVariant MobileListModel::data(const QModelIndex &index, int role) const
{
if (role == IsTopLevelRole)
@ -270,7 +273,6 @@ void MobileListModel::prepareRemove(const QModelIndex &parent, int first, int la
beginRemoveRows(QModelIndex(), range.first, range.last);
}
void MobileListModel::updateRowAfterRemove(const IndexRange &range, int &row)
{
if (row < 0)
@ -534,6 +536,7 @@ MobileModels *MobileModels::instance()
MobileModels::MobileModels() :
lm(&source)
{
reset();
}
MobileListModel *MobileModels::listModel()

31
qt-models/mobilelistmodel.h
View file

@ -1,10 +1,21 @@
// SPDX-License-Identifier: GPL-2.0
// This header files declares two linear models used by the mobile UI.
//
// MobileListModel presents a list of trips and optionally the dives of
// one expanded trip. It is used for quick navigation through trips.
//
// MobileDiveListModel gives a linearized view of all dives, sorted by
// trip. Even if there is temporal overlap of trips, all dives of
// a trip are listed in a contiguous block. This model is used for
// swiping through dives.
#ifndef MOBILELISTMODEL_H
#define MOBILELISTMODEL_H
#include "divetripmodel.h"
class MobileListModel : public QAbstractItemModel {
// This is the base class of the mobile-list model. All it does
// is exporting the various dive fields as roles.
class MobileListModelBase : public QAbstractItemModel {
Q_OBJECT
public:
enum Roles {
@ -44,6 +55,19 @@ public:
FirstGasRole,
SelectedRole,
};
QHash<int, QByteArray> roleNames() const override;
protected:
DiveTripModelBase *source;
MobileListModelBase(DiveTripModelBase *source);
private:
int columnCount(const QModelIndex &parent) const override;
QModelIndex index(int row, int column, const QModelIndex &parent) const override;
QModelIndex parent(const QModelIndex &index) const override;
};
class MobileListModel : public MobileListModelBase {
Q_OBJECT
public:
MobileListModel(DiveTripModelBase *source);
void expand(int row);
void unexpand();
@ -71,14 +95,9 @@ private:
static void updateRowAfterRemove(const IndexRange &range, int &row);
static void updateRowAfterMove(const IndexRange &range, const IndexRange &dest, int &row);
QVariant data(const QModelIndex &index, int role) const override;
QModelIndex index(int row, int column, const QModelIndex &parent) const override;
QModelIndex parent(const QModelIndex &index) const override;
int rowCount(const QModelIndex &parent) const override;
int columnCount(const QModelIndex &parent) const override;
QHash<int, QByteArray> roleNames() const override;
int shown() const;
DiveTripModelBase *source;
int expandedRow;
private slots:
void prepareRemove(const QModelIndex &parent, int first, int last);