MessageList::Core::Model

MessageList::Core::Model Class Reference

#include <model.h>

Inheritance diagram for MessageList::Core::Model:

Signals

void statusMessage (const QString &message)
 

Public Member Functions

 Model (View *pParent)
 
 ~Model () override
 
int columnCount (const QModelIndex &parent=QModelIndex()) const override
 
MessageItemSetReference createPersistentSet (const QVector< MessageItem * > &items)
 
QVariant data (const QModelIndex &index, int role=Qt::DisplayRole) const override
 
void deletePersistentSet (MessageItemSetReference ref)
 
Qt::ItemFlags flags (const QModelIndex &index) const override
 
QVariant headerData (int section, Qt::Orientation orientation, int role) const override
 
QModelIndex index (int row, int column, const QModelIndex &parent=QModelIndex()) const override
 
QModelIndex index (Item *item, int column) const
 
bool isLoading () const
 
MessageItemmessageItemByStorageRow (int row) const
 
QMimeDatamimeData (const QModelIndexList &indexes) const override
 
QModelIndex parent (const QModelIndex &index) const override
 
QList< MessageItem * > persistentSetCurrentMessageItemList (MessageItemSetReference ref)
 
ItemrootItem () const
 
int rowCount (const QModelIndex &parent=QModelIndex()) const override
 
void setAggregation (const Aggregation *aggregation)
 
void setFilter (const Filter *filter)
 
void setPreSelectionMode (PreSelectionMode preSelect)
 
void setSortOrder (const SortOrder *sortOrder)
 
void setStorageModel (StorageModel *storageModel, PreSelectionMode preSelectionMode=PreSelectLastSelected)
 
void setTheme (const Theme *theme)
 
const SortOrdersortOrder () const
 
StorageModelstorageModel () const
 
- Public Member Functions inherited from QAbstractItemModel
 QAbstractItemModel (QObject *parent)
 
virtual QModelIndex buddy (const QModelIndex &index) const const
 
virtual bool canDropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) const const
 
virtual bool canFetchMore (const QModelIndex &parent) const const
 
bool checkIndex (const QModelIndex &index, QAbstractItemModel::CheckIndexOptions options) const const
 
void columnsAboutToBeInserted (const QModelIndex &parent, int first, int last)
 
void columnsAboutToBeMoved (const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationColumn)
 
void columnsAboutToBeRemoved (const QModelIndex &parent, int first, int last)
 
void columnsInserted (const QModelIndex &parent, int first, int last)
 
void columnsMoved (const QModelIndex &parent, int start, int end, const QModelIndex &destination, int column)
 
void columnsRemoved (const QModelIndex &parent, int first, int last)
 
void dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector< int > &roles)
 
virtual bool dropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
 
virtual void fetchMore (const QModelIndex &parent)
 
virtual bool hasChildren (const QModelIndex &parent) const const
 
bool hasIndex (int row, int column, const QModelIndex &parent) const const
 
void headerDataChanged (Qt::Orientation orientation, int first, int last)
 
bool insertColumn (int column, const QModelIndex &parent)
 
virtual bool insertColumns (int column, int count, const QModelIndex &parent)
 
bool insertRow (int row, const QModelIndex &parent)
 
virtual bool insertRows (int row, int count, const QModelIndex &parent)
 
virtual QMap< int, QVariantitemData (const QModelIndex &index) const const
 
void layoutAboutToBeChanged (const QList< QPersistentModelIndex > &parents, QAbstractItemModel::LayoutChangeHint hint)
 
void layoutChanged (const QList< QPersistentModelIndex > &parents, QAbstractItemModel::LayoutChangeHint hint)
 
virtual QModelIndexList match (const QModelIndex &start, int role, const QVariant &value, int hits, Qt::MatchFlags flags) const const
 
virtual QStringList mimeTypes () const const
 
void modelAboutToBeReset ()
 
void modelReset ()
 
bool moveColumn (const QModelIndex &sourceParent, int sourceColumn, const QModelIndex &destinationParent, int destinationChild)
 
virtual bool moveColumns (const QModelIndex &sourceParent, int sourceColumn, int count, const QModelIndex &destinationParent, int destinationChild)
 
bool moveRow (const QModelIndex &sourceParent, int sourceRow, const QModelIndex &destinationParent, int destinationChild)
 
virtual bool moveRows (const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild)
 
bool removeColumn (int column, const QModelIndex &parent)
 
virtual bool removeColumns (int column, int count, const QModelIndex &parent)
 
bool removeRow (int row, const QModelIndex &parent)
 
virtual bool removeRows (int row, int count, const QModelIndex &parent)
 
virtual void revert ()
 
virtual QHash< int, QByteArrayroleNames () const const
 
void rowsAboutToBeInserted (const QModelIndex &parent, int start, int end)
 
void rowsAboutToBeMoved (const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow)
 
void rowsAboutToBeRemoved (const QModelIndex &parent, int first, int last)
 
void rowsInserted (const QModelIndex &parent, int first, int last)
 
void rowsMoved (const QModelIndex &parent, int start, int end, const QModelIndex &destination, int row)
 
void rowsRemoved (const QModelIndex &parent, int first, int last)
 
virtual bool setData (const QModelIndex &index, const QVariant &value, int role)
 
virtual bool setHeaderData (int section, Qt::Orientation orientation, const QVariant &value, int role)
 
virtual bool setItemData (const QModelIndex &index, const QMap< int, QVariant > &roles)
 
void setSupportedDragActions (Qt::DropActions actions)
 
virtual QModelIndex sibling (int row, int column, const QModelIndex &index) const const
 
virtual void sort (int column, Qt::SortOrder order)
 
virtual QSize span (const QModelIndex &index) const const
 
virtual bool submit ()
 
virtual Qt::DropActions supportedDragActions () const const
 
virtual Qt::DropActions supportedDropActions () const const
 
- Public Member Functions inherited from QObject
 QObject (QObject *parent)
 
bool blockSignals (bool block)
 
const QObjectListchildren () const const
 
QMetaObject::Connection connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
 
void deleteLater ()
 
void destroyed (QObject *obj)
 
bool disconnect (const char *signal, const QObject *receiver, const char *method) const const
 
bool disconnect (const QObject *receiver, const char *method) const const
 
void dumpObjectInfo ()
 
void dumpObjectInfo () const const
 
void dumpObjectTree ()
 
void dumpObjectTree () const const
 
QList< QByteArraydynamicPropertyNames () const const
 
virtual bool event (QEvent *e)
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 
findChild (const QString &name, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QString &name, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const
 
QList< T > findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
 
bool inherits (const char *className) const const
 
void installEventFilter (QObject *filterObj)
 
bool isWidgetType () const const
 
bool isWindowType () const const
 
void killTimer (int id)
 
virtual const QMetaObjectmetaObject () const const
 
void moveToThread (QThread *targetThread)
 
QString objectName () const const
 
void objectNameChanged (const QString &objectName)
 
QObjectparent () const const
 
QVariant property (const char *name) const const
 
 Q_CLASSINFO (Name, Value)
 
 Q_DISABLE_COPY (Class)
 
 Q_DISABLE_COPY_MOVE (Class)
 
 Q_DISABLE_MOVE (Class)
 
 Q_EMIT Q_EMIT
 
 Q_ENUM (...)
 
 Q_ENUM_NS (...)
 
 Q_ENUMS (...)
 
 Q_FLAG (...)
 
 Q_FLAG_NS (...)
 
 Q_FLAGS (...)
 
 Q_GADGET Q_GADGET
 
 Q_INTERFACES (...)
 
 Q_INVOKABLE Q_INVOKABLE
 
 Q_NAMESPACE Q_NAMESPACE
 
 Q_NAMESPACE_EXPORT (EXPORT_MACRO)
 
 Q_OBJECT Q_OBJECT
 
 Q_PROPERTY (...)
 
 Q_REVISION Q_REVISION
 
 Q_SET_OBJECT_NAME (Object)
 
 Q_SIGNAL Q_SIGNAL
 
 Q_SIGNALS Q_SIGNALS
 
 Q_SLOT Q_SLOT
 
 Q_SLOTS Q_SLOTS
 
qFindChild (const QObject *obj, const QString &name)
 
QList< T > qFindChildren (const QObject *obj, const QRegExp &regExp)
 
QList< T > qFindChildren (const QObject *obj, const QString &name)
 
qobject_cast (QObject *object)
 
qobject_cast (const QObject *object)
 
 QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
 
void removeEventFilter (QObject *obj)
 
void setObjectName (const QString &name)
 
void setParent (QObject *parent)
 
bool setProperty (const char *name, const QVariant &value)
 
bool signalsBlocked () const const
 
int startTimer (int interval, Qt::TimerType timerType)
 
int startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)
 
QThreadthread () const const
 

Additional Inherited Members

- Public Types inherited from QAbstractItemModel
enum  CheckIndexOption
 
enum  LayoutChangeHint
 
- Properties inherited from QObject
 objectName
 
- Static Public Member Functions inherited from QObject
QMetaObject::Connection connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
 
QMetaObject::Connection connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
 
QMetaObject::Connection connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
 
bool disconnect (const QMetaObject::Connection &connection)
 
bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
 
bool disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
 
bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
 
QString tr (const char *sourceText, const char *disambiguation, int n)
 
QString trUtf8 (const char *sourceText, const char *disambiguation, int n)
 
- Public Attributes inherited from QAbstractItemModel
typedef CheckIndexOptions
 
 DoNotUseParent
 
 HorizontalSortHint
 
 IndexIsValid
 
 NoLayoutChangeHint
 
 NoOption
 
 ParentIsInvalid
 
 VerticalSortHint
 
- Public Attributes inherited from QObject
typedef QObjectList
 
- Protected Member Functions inherited from QAbstractItemModel
void beginInsertColumns (const QModelIndex &parent, int first, int last)
 
void beginInsertRows (const QModelIndex &parent, int first, int last)
 
bool beginMoveColumns (const QModelIndex &sourceParent, int sourceFirst, int sourceLast, const QModelIndex &destinationParent, int destinationChild)
 
bool beginMoveRows (const QModelIndex &sourceParent, int sourceFirst, int sourceLast, const QModelIndex &destinationParent, int destinationChild)
 
void beginRemoveColumns (const QModelIndex &parent, int first, int last)
 
void beginRemoveRows (const QModelIndex &parent, int first, int last)
 
void beginResetModel ()
 
void changePersistentIndex (const QModelIndex &from, const QModelIndex &to)
 
void changePersistentIndexList (const QModelIndexList &from, const QModelIndexList &to)
 
QModelIndex createIndex (int row, int column, void *ptr) const const
 
QModelIndex createIndex (int row, int column, quintptr id) const const
 
void endInsertColumns ()
 
void endInsertRows ()
 
void endMoveColumns ()
 
void endMoveRows ()
 
void endRemoveColumns ()
 
void endRemoveRows ()
 
void endResetModel ()
 
QModelIndexList persistentIndexList () const const
 
void reset ()
 
void resetInternalData ()
 
void setRoleNames (const QHash< int, QByteArray > &roleNames)
 
- Protected Member Functions inherited from QObject
virtual void childEvent (QChildEvent *event)
 
virtual void connectNotify (const QMetaMethod &signal)
 
virtual void customEvent (QEvent *event)
 
virtual void disconnectNotify (const QMetaMethod &signal)
 
bool isSignalConnected (const QMetaMethod &signal) const const
 
int receivers (const char *signal) const const
 
QObjectsender () const const
 
int senderSignalIndex () const const
 
virtual void timerEvent (QTimerEvent *event)
 

Detailed Description

This class manages the huge tree of displayable objects: GroupHeaderItems and MessageItems.

The tree is exposed via a 'hacked' QAbstractItemModel interface to a QTreeView subclass (which is MessageList::View).

The keypoint in this class is that it has to be non-blocking in manipulating the tree: fill, cleanup and update operations are performed in timed chunks. Perfect non-blocking behaviour is not possible since there are some small operations that basically can't be split in chunks. However, these exceptions apply to a minority of tasks and in the average case the user will not notice.

The data for building the tree is obtained from a subclass of StorageModel. The StorageModel must offer a consistent rappresentation of a "flat" folder containing messages.

Definition at line 52 of file model.h.

Constructor & Destructor Documentation

Model::Model ( View pParent)
explicit

Creates the mighty Model attached to the specified View.

Definition at line 300 of file model.cpp.

Model::~Model ( )
override

Destroys the mighty model along with the tree of items it manages.

Definition at line 349 of file model.cpp.

Member Function Documentation

MessageItemSetReference Model::createPersistentSet ( const QVector< MessageItem * > &  items)

Creates a persistent set for the specified MessageItems and returns its reference.

Later you can use this reference to retrieve the list of MessageItems that are still valid. See persistentSetActualMessageList() for that.

Persistent sets consume resources (both memory and CPU time while manipulating the view) so be sure to call deletePersistentSet() when you no longer need it.

Definition at line 4585 of file model.cpp.

QVariant Model::data ( const QModelIndex index,
int  role = Qt::DisplayRole 
) const
overridevirtual

this is called only when Akonadi is using the selectionmodel for item actions. since akonadi uses the ETM ItemRoles, and the messagelist uses its own internal roles, here we respond to the ETM ones.

taken from entitytreemodel.h

Implements QAbstractItemModel.

Definition at line 487 of file model.cpp.

void Model::deletePersistentSet ( MessageItemSetReference  ref)

Deletes the persistent set pointed by the specified reference.

If the set does not exist anymore, nothing happens.

Definition at line 4607 of file model.cpp.

bool Model::isLoading ( ) const

Returns true if the view is currently loading, that is it's in the first (possibly lengthy) job batch after attaching to a StorageModel.

Definition at line 4567 of file model.cpp.

MessageItem * Model::messageItemByStorageRow ( int  row) const

Returns the message item that is at the current storage row index or zero if no such storage item is found.

Please note that this may return 0 also if the specified storage row hasn't been actually read yet. This may happen if isLoading() returns true. In this case the only thing you can do is to retry in a while.

Definition at line 4572 of file model.cpp.

QMimeData * MessageList::Core::Model::mimeData ( const QModelIndexList &  indexes) const
overridevirtual

Called when user initiates a drag from the messagelist.

Reimplemented from QAbstractItemModel.

Definition at line 4548 of file model.cpp.

QList< MessageItem * > Model::persistentSetCurrentMessageItemList ( MessageItemSetReference  ref)

Returns the list of MessageItems that are still existing in the set pointed by the specified reference.

This list will contain at most the messages that you have passed to createPersistentSet() but may contain less (even 0) if these MessageItem object were removed from the view for some reason.

Definition at line 4599 of file model.cpp.

Item * Model::rootItem ( ) const

Returns the hidden root item that all the messages are (or will be) attached to.

The returned value is never 0.

Definition at line 4562 of file model.cpp.

void Model::setAggregation ( const Aggregation aggregation)

Sets the Aggregation mode.

Does not reload the model in any way: you need to call setStorageModel( storageModel() ) for this to happen. The pointer ownership remains of the caller which must ensure its validity until the next call to setAggretation() or until this Model dies. The caller, in fact, is Widget which takes care of meeting the above conditions. The aggregation pointer must not be null.

Definition at line 369 of file model.cpp.

void Model::setFilter ( const Filter filter)

Sets the Filter to be applied on messages.

filter may be null (no filter is applied). The pointer ownership remains of the caller which must ensure its validity until the next call to setFilter() or until this Model dies. The caller, in fact, is Widget which takes care of meeting the above conditions. The Filter pointer may be null.

Definition at line 391 of file model.cpp.

void Model::setPreSelectionMode ( PreSelectionMode  preSelect)

Sets the pre-selection mode.

Called with PreSelectNone to abort any pending message pre-selection. This may be done if the user starts navigating the view and selecting items before we actually could apply the pre-selection.

Definition at line 1011 of file model.cpp.

void Model::setSortOrder ( const SortOrder sortOrder)

Sets the sort order.

As with setTheme() and setAggregation(), this does not reload the model in any way.

Definition at line 381 of file model.cpp.

void Model::setStorageModel ( StorageModel storageModel,
PreSelectionMode  preSelectionMode = PreSelectLastSelected 
)

Sets the storage model from that the messages to be displayed should be fetched.

The model is then reset and a new fill operation is started. The fill operation may or may not complete before setStorageModel() returns. This depends on the fill strategy and the size of the folder. You can check if the fill operation has completed by looking at the return value of isLoading().

Pre-selection is the action of automatically selecting a message just after the folder has finished loading. We may want to select the message that was selected the last time this folder has been open, or we may want to select the first unread message. We also may want to do no pre-selection at all (for example, when the user starts navigating the view before the pre-selection could actually be made and pre-selecting would confuse him). The pre-selection is applied once loading is complete.

Definition at line 743 of file model.cpp.

void Model::setTheme ( const Theme theme)

Sets the Theme.

Does not reload the model in any way: you need to call setStorageModel( storageModel() ) for this to happen. The pointer ownership remains of the caller which must ensure its validity until the next call to setTheme() or until this Model dies. The caller, in fact, is Widget which takes care of meeting the above conditions. The theme pointer must not be null.

Definition at line 376 of file model.cpp.

const SortOrder * Model::sortOrder ( ) const

Returns the sort order.

Definition at line 386 of file model.cpp.

void MessageList::Core::Model::statusMessage ( const QString message)
signal

Notify the outside when updating the status bar with a message could be useful.

StorageModel * Model::storageModel ( ) const

Returns the StorageModel currently set.

Definition at line 693 of file model.cpp.


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