Wt
4.11.0
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A read-only wrapper for a source model. More...
#include <Wt/WReadOnlyProxyModel.h>
Public Member Functions | |
WReadOnlyProxyModel () | |
Constructor. | |
virtual WModelIndex | mapFromSource (const WModelIndex &sourceIndex) const override |
Maps a source model index to the proxy model. | |
virtual WModelIndex | mapToSource (const WModelIndex &proxyIndex) const override |
Maps a proxy model index to the source model. | |
virtual int | columnCount (const WModelIndex &parent=WModelIndex()) const override |
Returns the number of columns. | |
virtual int | rowCount (const WModelIndex &parent=WModelIndex()) const override |
Returns the number of rows. | |
virtual WModelIndex | parent (const WModelIndex &index) const override |
Returns the parent for a model index. | |
virtual WModelIndex | index (int row, int column, const WModelIndex &parent=WModelIndex()) const override |
Returns the child index for the given row and column. | |
virtual bool | setData (const WModelIndex &index, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit) override |
Always returns false and has no effect. | |
virtual bool | setItemData (const WModelIndex &index, const DataMap &values) override |
Always returns false and has no effect. | |
virtual bool | setHeaderData (int section, Orientation orientation, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit) override |
Always returns false and has no effect. | |
virtual bool | insertColumns (int column, int count, const WModelIndex &parent) override |
Always returns false and has no effect. | |
virtual bool | removeColumns (int column, int count, const WModelIndex &parent) override |
Always returns false and has no effect. | |
virtual void | dropEvent (const WDropEvent &e, DropAction action, int row, int column, const WModelIndex &parent) override |
Has no effect. | |
virtual bool | setData (const WModelIndex &index, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit) override |
Sets the data at the given model index. | |
virtual bool | setData (const WModelIndex &index, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit) |
Sets data at the given model index. | |
bool | setData (int row, int column, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit, const WModelIndex &parent=WModelIndex()) |
Sets data at the given row and column. | |
virtual bool | setHeaderData (int section, Orientation orientation, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit) |
Sets header data for a column or row. | |
bool | setHeaderData (int section, const cpp17::any &value) |
Sets column header data. | |
Public Member Functions inherited from Wt::WAbstractProxyModel | |
WAbstractProxyModel () | |
Constructor. | |
virtual void | setSourceModel (const std::shared_ptr< WAbstractItemModel > &sourceModel) |
Sets the source model. | |
std::shared_ptr< WAbstractItemModel > | sourceModel () const |
Returns the source model. | |
virtual cpp17::any | data (const WModelIndex &index, ItemDataRole role=ItemDataRole::Display) const override |
Returns the data at a specific model index. | |
virtual cpp17::any | headerData (int section, Orientation orientation=Orientation::Horizontal, ItemDataRole role=ItemDataRole::Display) const override |
Returns the row or column header data. | |
virtual WFlags< ItemFlag > | flags (const WModelIndex &index) const override |
Returns the flags for an item. | |
virtual WFlags< HeaderFlag > | headerFlags (int section, Orientation orientation=Orientation::Horizontal) const override |
Returns the flags for a header. | |
virtual std::string | mimeType () const override |
Returns a mime-type for dragging a set of indexes. | |
virtual std::vector< std::string > | acceptDropMimeTypes () const override |
Returns a list of mime-types that could be accepted for a drop event. | |
virtual void * | toRawIndex (const WModelIndex &index) const override |
Converts a model index to a raw pointer that remains valid while the model's layout is changed. | |
virtual WModelIndex | fromRawIndex (void *rawIndex) const override |
Converts a raw pointer to a model index. | |
bool | setData (int row, int column, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit, const WModelIndex &parent=WModelIndex()) |
Sets data at the given row and column. | |
virtual cpp17::any | data (const WModelIndex &index, ItemDataRole role=ItemDataRole::Display) const=0 |
Returns data at a specified model index for the given role. | |
cpp17::any | data (int row, int column, ItemDataRole role=ItemDataRole::Display, const WModelIndex &parent=WModelIndex()) const |
Returns the data item at the given column and row. | |
bool | setHeaderData (int section, const cpp17::any &value) |
Sets column header data. | |
Public Member Functions inherited from Wt::WAbstractItemModel | |
WAbstractItemModel () | |
Creates a new data model. | |
virtual bool | hasChildren (const WModelIndex &index) const |
Returns if there are children at an index. | |
virtual DataMap | itemData (const WModelIndex &index) const |
Returns all data at a specific index. | |
virtual WModelIndexList | match (const WModelIndex &start, ItemDataRole role, const cpp17::any &value, int hits=-1, WFlags< MatchFlag > flags=WFlags< MatchFlag >(MatchFlag::StartsWith|MatchFlag::Wrap)) const |
Returns an index list for data items that match. | |
cpp17::any | data (int row, int column, ItemDataRole role=ItemDataRole::Display, const WModelIndex &parent=WModelIndex()) const |
Returns the data item at the given column and row. | |
virtual bool | hasIndex (int row, int column, const WModelIndex &parent=WModelIndex()) const |
Returns if an index at the given position is valid (i.e. falls within the column-row bounds). | |
virtual bool | insertRows (int row, int count, const WModelIndex &parent=WModelIndex()) |
Inserts one or more rows. | |
virtual bool | removeRows (int row, int count, const WModelIndex &parent=WModelIndex()) |
Removes rows. | |
bool | setHeaderData (int section, const cpp17::any &value) |
Sets column header data. | |
virtual void | sort (int column, SortOrder order=SortOrder::Ascending) |
Sorts the model according to a particular column. | |
virtual void | expandColumn (int column) |
Expands a column. | |
virtual void | collapseColumn (int column) |
Collapses a column. | |
virtual void | dropEvent (const WDropEvent &e, DropAction action, const WModelIndex &index, Wt::Side side) |
Handles a drop event. | |
bool | insertColumn (int column, const WModelIndex &parent=WModelIndex()) |
Inserts one column. | |
bool | insertRow (int row, const WModelIndex &parent=WModelIndex()) |
Inserts one row. | |
bool | removeColumn (int column, const WModelIndex &parent=WModelIndex()) |
Removes one column. | |
bool | removeRow (int row, const WModelIndex &parent=WModelIndex()) |
Removes one row. | |
bool | setData (int row, int column, const cpp17::any &value, ItemDataRole role=ItemDataRole::Edit, const WModelIndex &parent=WModelIndex()) |
Sets data at the given row and column. | |
virtual Signal< WModelIndex, int, int > & | columnsAboutToBeInserted () |
Signal emitted before a number of columns will be inserted. | |
virtual Signal< WModelIndex, int, int > & | columnsAboutToBeRemoved () |
Signal emitted before a number of columns will be removed. | |
virtual Signal< WModelIndex, int, int > & | columnsInserted () |
Signal emitted after a number of columns were inserted. | |
virtual Signal< WModelIndex, int, int > & | columnsRemoved () |
Signal emitted after a number of columns were removed. | |
virtual Signal< WModelIndex, int, int > & | rowsAboutToBeInserted () |
Signal emitted before a number of rows will be inserted. | |
virtual Signal< WModelIndex, int, int > & | rowsAboutToBeRemoved () |
Signal emitted before a number of rows will be removed. | |
virtual Signal< WModelIndex, int, int > & | rowsInserted () |
Signal emitted after a number of rows were inserted. | |
virtual Signal< WModelIndex, int, int > & | rowsRemoved () |
Signal emitted after a number of rows were removed. | |
virtual Signal< WModelIndex, WModelIndex > & | dataChanged () |
Signal emitted when some data was changed. | |
virtual Signal< Orientation, int, int > & | headerDataChanged () |
Signal emitted when some header data was changed. | |
virtual Signal & | layoutAboutToBeChanged () |
Signal emitted when the layout is about to be changed. | |
virtual Signal & | layoutChanged () |
Signal emitted when the layout is changed. | |
virtual Signal & | modelReset () |
Signal emitted when the model was reset. | |
Public Member Functions inherited from Wt::WObject | |
void | addChild (std::unique_ptr< WObject > child) |
Add a child WObject whose lifetime is determined by this WObject. | |
template<typename Child > | |
Child * | addChild (std::unique_ptr< Child > child) |
Add a child WObject, returning a raw pointer. | |
std::unique_ptr< WObject > | removeChild (WObject *child) |
Remove a child WObject, so its lifetime is no longer determined by this WObject. | |
template<typename Child > | |
std::unique_ptr< Child > | removeChild (Child *child) |
Remove a child WObject, so its lifetime is no longer determined by this WObject. | |
virtual const std::string | id () const |
Returns the (unique) identifier for this object. | |
virtual void | setObjectName (const std::string &name) |
Sets an object name. | |
virtual std::string | objectName () const |
Returns the object name. | |
void | resetLearnedSlots () |
Resets learned stateless slot implementations. | |
template<class T > | |
void | resetLearnedSlot (void(T::*method)()) |
Resets a learned stateless slot implementation. | |
template<class T > | |
WStatelessSlot * | implementStateless (void(T::*method)()) |
Declares a slot to be stateless and learn client-side behaviour on first invocation. | |
template<class T > | |
WStatelessSlot * | implementStateless (void(T::*method)(), void(T::*undoMethod)()) |
Declares a slot to be stateless and learn client-side behaviour in advance. | |
void | isNotStateless () |
Marks the current function as not stateless. | |
template<class T > | |
WStatelessSlot * | implementJavaScript (void(T::*method)(), const std::string &jsCode) |
Provides a JavaScript implementation for a method. | |
Public Member Functions inherited from Wt::Core::observable | |
observable () noexcept | |
Default constructor. | |
virtual | ~observable () |
Destructor. | |
template<typename... Args, typename C > | |
auto | bindSafe (void(C::*method)(Args...)) noexcept |
Protects a method call against object destruction. | |
template<typename... Args, typename C > | |
auto | bindSafe (void(C::*method)(Args...) const) const noexcept |
Protects a const method call against object destruction. | |
template<typename Function > | |
auto | bindSafe (const Function &function) noexcept |
Protects a function against object destruction. | |
Additional Inherited Members | |
Public Types inherited from Wt::WAbstractItemModel | |
typedef std::map< ItemDataRole, cpp17::any > | DataMap |
Data map. | |
Public Types inherited from Wt::WObject | |
typedef void(WObject::* | Method) () |
Typedef for a WObject method without arguments. | |
Protected Types inherited from Wt::WAbstractProxyModel | |
typedef std::map< WModelIndex, BaseItem * > | ItemMap |
A map for items. | |
Protected Member Functions inherited from Wt::WAbstractProxyModel | |
WModelIndex | createSourceIndex (int row, int column, void *ptr) const |
Create a source model index. | |
void | startShiftModelIndexes (const WModelIndex &sourceParent, int start, int count, ItemMap &items) |
Utility methods to shift items in an item map. | |
Protected Member Functions inherited from Wt::WAbstractItemModel | |
void | reset () |
Resets the model and invalidate any data. | |
WModelIndex | createIndex (int row, int column, void *ptr) const |
Creates a model index for the given row and column. | |
WModelIndex | createIndex (int row, int column, ::uint64_t id) const |
Creates a model index for the given row and column. | |
void | beginInsertColumns (const WModelIndex &parent, int first, int last) |
Method to be called before inserting columns. | |
void | beginInsertRows (const WModelIndex &parent, int first, int last) |
Method to be called before inserting rows. | |
void | beginRemoveColumns (const WModelIndex &parent, int first, int last) |
Method to be called before removing columns. | |
void | beginRemoveRows (const WModelIndex &parent, int first, int last) |
Method to be called before removing rows. | |
void | endInsertColumns () |
Method to be called after inserting columns. | |
void | endInsertRows () |
Method to be called after inserting rows. | |
void | endRemoveColumns () |
Method to be called after removing columns. | |
void | endRemoveRows () |
Method to be called after removing rows. | |
virtual void | copyData (const WModelIndex &sIndex, const WModelIndex &dIndex) |
Copy data to an index in this model. | |
Protected Member Functions inherited from Wt::WObject | |
virtual WStatelessSlot * | getStateless (Method method) |
On-demand stateless slot implementation. | |
A read-only wrapper for a source model.
This is a simple proxy model which provides a read-only view on a source model. This is convenient for situations where you want to share a common read-only source model between different sessions.
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overridevirtual |
Returns the number of columns.
This returns the column count of the source model.
Implements Wt::WAbstractItemModel.
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overridevirtual |
Returns the child index for the given row and column.
Returns the index in the source model.
Implements Wt::WAbstractItemModel.
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overridevirtual |
Maps a source model index to the proxy model.
Returns the sourceIndex unmodified.
Implements Wt::WAbstractProxyModel.
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overridevirtual |
Maps a proxy model index to the source model.
Returns the proxyIndex unmodified.
Implements Wt::WAbstractProxyModel.
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overridevirtual |
Returns the parent for a model index.
Returns the parent of the given index in the source model.
Implements Wt::WAbstractItemModel.
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overridevirtual |
Returns the number of rows.
This returns the row count of the source model.
Implements Wt::WAbstractItemModel.
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virtual |
Sets data at the given model index.
Returns true
if the operation was successful.
The default implementation returns false
.
The model implementation must emit the dataChanged() signal after data was changed.
Reimplemented from Wt::WAbstractProxyModel.
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overridevirtual |
Sets the data at the given model index.
The default proxy implementation calls sourceModel()->setData(mapToSource(index), value, role)
Reimplemented from Wt::WAbstractProxyModel.
bool Wt::WAbstractItemModel::setData | ( | int | row, |
int | column, | ||
const cpp17::any & | value, | ||
ItemDataRole | role = ItemDataRole::Edit , |
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const WModelIndex & | parent = WModelIndex() |
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) |
Sets data at the given row and column.
This is a convience method, and is equivalent to:
Returns true
if the operation was successful.
Sets column header data.
Returns true
if the operation was successful.
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virtual |
Sets header data for a column or row.
Returns true
if the operation was successful.
Reimplemented from Wt::WAbstractProxyModel.