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Implement support for updating FolderModel without resetting the whole model

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This will make views keep their state after an update.
This commit is contained in:
Luis Ángel San Martín
2023-08-13 11:33:33 +02:00
parent c06156a937
commit 2e9ec030ad
2 changed files with 202 additions and 51 deletions
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21
YACReaderLibrary/db/folder_model.h
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@ -44,7 +44,6 @@ class FolderModel : public QAbstractItemModel
public:
explicit FolderModel(QObject *parent = nullptr);
explicit FolderModel(QSqlQuery &sqlquery, QObject *parent = nullptr);
~FolderModel() override;
// QAbstractItemModel methods
@ -72,9 +71,10 @@ public:
void updateFolderType(const QModelIndexList &list, YACReader::FileType type);
QStringList getSubfoldersNames(const QModelIndex &mi);
FolderModel *getSubfoldersModel(const QModelIndex &mi);
FolderModel *getSubfoldersModel(const QModelIndex &mi); // it creates a model that contains just the direct subfolders
Folder getFolder(const QModelIndex &mi);
QModelIndex getIndexFromFolderId(qulonglong folderId, const QModelIndex &parent = QModelIndex());
QModelIndex getIndexFromFolder(const Folder &folder, const QModelIndex &parent = QModelIndex());
QModelIndex addFolderAtParent(const QString &folderName, const QModelIndex &parent);
@ -118,11 +118,20 @@ public slots:
void updateFolderChildrenInfo(qulonglong folderId);
private:
void fullSetup(QSqlQuery &sqlquery, FolderItem *parent);
void setupModelData(QSqlQuery &sqlquery, FolderItem *parent);
struct ModelData {
FolderItem *rootItem; // items tree
QMap<unsigned long long int, FolderItem *> items; // items lookup
};
FolderItem *rootItem; // el árbol
QMap<unsigned long long int, FolderItem *> items; // relación entre folders
void setModelData(const ModelData &modelData);
ModelData createModelData(const QString &path) const;
ModelData createModelData(QSqlQuery &sqlquery, FolderItem *parent) const;
// parent contains the current data in the model (parentModelIndex is its index), updated contains fresh info loaded from the DB,
void takeUpdatedChildrenInfo(FolderItem *parent, const QModelIndex &parentModelIndex, FolderItem *updated);
FolderItem *rootItem; // items tree
QMap<unsigned long long int, FolderItem *> items; // items lookup
QString _databasePath;