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wxWidgets/interface/wx/dataview.h
Václav Slavík 64c70359a7 Return wxWindow* from wxDataViewCustomRenderer::CreateEditorCtrl(). 
There's no reason to limit custom editor controls to wxControl, which
would rule out e.g. composite controls or any custom widgets.
Make appropriate changes to related functions and code too.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67576 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2011-04-22 18:25:32 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: dataview.h
// Purpose: interface of wxDataView* classes
// Author: wxWidgets team
// RCS-ID: $Id$
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/**
@class wxDataViewModel
wxDataViewModel is the base class for all data model to be displayed by a
wxDataViewCtrl.
All other models derive from it and must implement its pure virtual functions
in order to define a complete data model. In detail, you need to override
wxDataViewModel::IsContainer, wxDataViewModel::GetParent, wxDataViewModel::GetChildren,
wxDataViewModel::GetColumnCount, wxDataViewModel::GetColumnType and
wxDataViewModel::GetValue in order to define the data model which acts as an
interface between your actual data and the wxDataViewCtrl.
Note that wxDataViewModel does not define the position or index of any item
in the control because different controls might display the same data differently.
wxDataViewModel does provide a wxDataViewModel::Compare method which the
wxDataViewCtrl may use to sort the data either in conjunction with a column
header or without (see wxDataViewModel::HasDefaultCompare).
wxDataViewModel (as indeed the entire wxDataViewCtrl code) is using wxVariant
to store data and its type in a generic way. wxVariant can be extended to contain
almost any data without changes to the original class. To a certain extent,
you can use (the somewhat more elegant) wxAny instead of wxVariant as there
is code to convert between the two, but it is unclear what impact this will
have on performance.
Since you will usually allow the wxDataViewCtrl to change your data
through its graphical interface, you will also have to override
wxDataViewModel::SetValue which the wxDataViewCtrl will call when a change
to some data has been committed.
If the data represented by the model is changed by something else than its
associated wxDataViewCtrl, the control has to be notified about the change.
Depending on what happened you need to call one of the following methods:
- wxDataViewModel::ValueChanged,
- wxDataViewModel::ItemAdded,
- wxDataViewModel::ItemDeleted,
- wxDataViewModel::ItemChanged,
- wxDataViewModel::Cleared.
There are plural forms for notification of addition, change or removal of
several item at once. See:
- wxDataViewModel::ItemsAdded,
- wxDataViewModel::ItemsDeleted,
- wxDataViewModel::ItemsChanged.
This class maintains a list of wxDataViewModelNotifier which link this class
to the specific implementations on the supported platforms so that e.g. calling
wxDataViewModel::ValueChanged on this model will just call
wxDataViewModelNotifier::ValueChanged for each notifier that has been added.
You can also add your own notifier in order to get informed about any changes
to the data in the list model.
Currently wxWidgets provides the following models apart from the base model:
wxDataViewIndexListModel, wxDataViewVirtualListModel, wxDataViewTreeStore,
wxDataViewListStore.
Note that wxDataViewModel is reference counted, derives from wxRefCounter
and cannot be deleted directly as it can be shared by several wxDataViewCtrls.
This implies that you need to decrease the reference count after
associating the model with a control like this:
@code
wxDataViewCtrl *musicCtrl = new wxDataViewCtrl( this, wxID_ANY );
wxDataViewModel *musicModel = new MyMusicModel;
m_musicCtrl->AssociateModel( musicModel );
musicModel->DecRef(); // avoid memory leak !!
// add columns now
@endcode
A potentially better way to avoid memory leaks is to use wxObjectDataPtr
@code
wxObjectDataPtr<MyMusicModel> musicModel;
wxDataViewCtrl *musicCtrl = new wxDataViewCtrl( this, wxID_ANY );
musicModel = new MyMusicModel;
m_musicCtrl->AssociateModel( musicModel.get() );
// add columns now
@endcode
@library{wxadv}
@category{dvc}
*/
class wxDataViewModel : public wxRefCounter
{
public:
/**
Constructor.
*/
wxDataViewModel();
/**
Adds a wxDataViewModelNotifier to the model.
*/
void AddNotifier(wxDataViewModelNotifier* notifier);
/**
Change the value of the given item and update the control to reflect
it.
This function simply calls SetValue() and, if it succeeded,
ValueChanged().
@since 2.9.1
@param variant
The new value.
@param item
The item (row) to update.
@param col
The column to update.
@return
@true if both SetValue() and ValueChanged() returned @true.
*/
bool ChangeValue(const wxVariant& variant,
const wxDataViewItem& item,
unsigned int col);
/**
Called to inform the model that all data has been cleared.
The control will reread the data from the model again.
*/
virtual bool Cleared();
/**
The compare function to be used by control. The default compare function
sorts by container and other items separately and in ascending order.
Override this for a different sorting behaviour.
@see HasDefaultCompare().
*/
virtual int Compare(const wxDataViewItem& item1,
const wxDataViewItem& item2,
unsigned int column,
bool ascending) const;
/**
Override this to indicate that the item has special font attributes.
This only affects the wxDataViewTextRendererText renderer.
The base class version always simply returns @false.
@see wxDataViewItemAttr.
@param item
The item for which the attribute is requested.
@param col
The column of the item for which the attribute is requested.
@param attr
The attribute to be filled in if the function returns @true.
@return
@true if this item has an attribute or @false otherwise.
*/
virtual bool GetAttr(const wxDataViewItem& item, unsigned int col,
wxDataViewItemAttr& attr) const;
/**
Override this to indicate that the item should be disabled.
Disabled items are displayed differently (e.g. grayed out) and cannot
be interacted with.
The base class version always returns @true, thus making all items
enabled by default.
@param item
The item whose enabled status is requested.
@param col
The column of the item whose enabled status is requested.
@return
@true if this item should be enabled, @false otherwise.
@note Currently disabling items is fully implemented only for the
native control implementation in wxOSX/Cocoa and wxGTK.
This feature is only partially supported in the generic
version (used by wxMSW) and not supported by the wxOSX/Carbon
implementation.
@since 2.9.2
*/
virtual bool IsEnabled(const wxDataViewItem &item,
unsigned int col) const;
/**
Override this so the control can query the child items of an item.
Returns the number of items.
*/
virtual unsigned int GetChildren(const wxDataViewItem& item,
wxDataViewItemArray& children) const = 0;
/**
Override this to indicate the number of columns in the model.
*/
virtual unsigned int GetColumnCount() const = 0;
/**
Override this to indicate what type of data is stored in the
column specified by @a col.
This should return a string indicating the type of data as reported by wxVariant.
*/
virtual wxString GetColumnType(unsigned int col) const = 0;
/**
Override this to indicate which wxDataViewItem representing the parent
of @a item or an invalid wxDataViewItem if the root item is
the parent item.
*/
virtual wxDataViewItem GetParent(const wxDataViewItem& item) const = 0;
/**
Override this to indicate the value of @a item.
A wxVariant is used to store the data.
*/
virtual void GetValue(wxVariant& variant, const wxDataViewItem& item,
unsigned int col) const = 0;
/**
Override this method to indicate if a container item merely acts as a
headline (or for categorisation) or if it also acts a normal item with
entries for further columns. By default returns @false.
*/
virtual bool HasContainerColumns(const wxDataViewItem& item) const;
/**
Override this to indicate that the model provides a default compare
function that the control should use if no wxDataViewColumn has been
chosen for sorting. Usually, the user clicks on a column header for
sorting, the data will be sorted alphanumerically.
If any other order (e.g. by index or order of appearance) is required,
then this should be used.
See wxDataViewIndexListModel for a model which makes use of this.
*/
virtual bool HasDefaultCompare() const;
/**
Return true if there is a value in the given column of this item.
All normal items have values in all columns but the container items
only show their label in the first column (@a col == 0) by default (but
see HasContainerColumns()). So this function always returns true for
the first column while for the other ones it returns true only if the
item is not a container or HasContainerColumns() was overridden to
return true for it.
@since 2.9.1
*/
bool HasValue(const wxDataViewItem& item, unsigned col) const;
/**
Override this to indicate of @a item is a container, i.e. if
it can have child items.
*/
virtual bool IsContainer(const wxDataViewItem& item) const = 0;
/**
Call this to inform the model that an item has been added to the data.
*/
bool ItemAdded(const wxDataViewItem& parent,
const wxDataViewItem& item);
/**
Call this to inform the model that an item has changed.
This will eventually emit a @c wxEVT_DATAVIEW_ITEM_VALUE_CHANGED
event (in which the column fields will not be set) to the user.
*/
bool ItemChanged(const wxDataViewItem& item);
/**
Call this to inform the model that an item has been deleted from the data.
*/
bool ItemDeleted(const wxDataViewItem& parent,
const wxDataViewItem& item);
/**
Call this to inform the model that several items have been added to the data.
*/
bool ItemsAdded(const wxDataViewItem& parent,
const wxDataViewItemArray& items);
/**
Call this to inform the model that several items have changed.
This will eventually emit @c wxEVT_DATAVIEW_ITEM_VALUE_CHANGED
events (in which the column fields will not be set) to the user.
*/
bool ItemsChanged(const wxDataViewItemArray& items);
/**
Call this to inform the model that several items have been deleted.
*/
bool ItemsDeleted(const wxDataViewItem& parent,
const wxDataViewItemArray& items);
/**
Remove the @a notifier from the list of notifiers.
*/
void RemoveNotifier(wxDataViewModelNotifier* notifier);
/**
Call this to initiate a resort after the sort function has been changed.
*/
virtual void Resort();
/**
This gets called in order to set a value in the data model.
The most common scenario is that the wxDataViewCtrl calls this method
after the user changed some data in the view.
This is the function you need to override in your derived class but if
you want to call it, ChangeValue() is usually more convenient as
otherwise you need to manually call ValueChanged() to update the
control itself.
*/
virtual bool SetValue(const wxVariant& variant,
const wxDataViewItem& item,
unsigned int col) = 0;
/**
Call this to inform this model that a value in the model has been changed.
This is also called from wxDataViewCtrl's internal editing code, e.g. when
editing a text field in the control.
This will eventually emit a @c wxEVT_DATAVIEW_ITEM_VALUE_CHANGED
event to the user.
*/
virtual bool ValueChanged(const wxDataViewItem& item,
unsigned int col);
protected:
/**
Destructor. This should not be called directly. Use DecRef() instead.
*/
virtual ~wxDataViewModel();
};
/**
@class wxDataViewListModel
Base class with abstract API for wxDataViewIndexListModel and
wxDataViewVirtualListModel.
@library{wxadv}
@category{dvc}
*/
class wxDataViewListModel : public wxDataViewModel
{
public:
/**
Destructor.
*/
virtual ~wxDataViewIndexListModel();
/**
Compare method that sorts the items by their index.
*/
int Compare(const wxDataViewItem& item1,
const wxDataViewItem& item2,
unsigned int column, bool ascending);
/**
Override this to indicate that the row has special font attributes.
This only affects the wxDataViewTextRendererText() renderer.
The base class version always simply returns @false.
@see wxDataViewItemAttr.
@param row
The row for which the attribute is requested.
@param col
The column for which the attribute is requested.
@param attr
The attribute to be filled in if the function returns @true.
@return
@true if this item has an attribute or @false otherwise.
*/
virtual bool GetAttrByRow(unsigned int row, unsigned int col,
wxDataViewItemAttr& attr) const;
/**
Override this if you want to disable specific items.
The base class version always returns @true, thus making all items
enabled by default.
@param row
The row of the item whose enabled status is requested.
@param col
The column of the item whose enabled status is requested.
@return
@true if the item at this row and column should be enabled,
@false otherwise.
@note See wxDataViewModel::IsEnabled() for the current status of
support for disabling the items under different platforms.
@since 2.9.2
*/
virtual bool IsEnabledByRow(unsigned int row,
unsigned int col) const;
/**
Returns the number of items (i.e. rows) in the list.
*/
unsigned int GetCount() const;
/**
Returns the wxDataViewItem at the given @e row.
*/
wxDataViewItem GetItem(unsigned int row) const;
/**
Returns the position of given @e item.
*/
unsigned int GetRow(const wxDataViewItem& item) const;
/**
Override this to allow getting values from the model.
*/
virtual void GetValueByRow(wxVariant& variant, unsigned int row,
unsigned int col) const = 0;
/**
Call this after if the data has to be read again from the model.
This is useful after major changes when calling the methods below
(possibly thousands of times) doesn't make sense.
*/
void Reset(unsigned int new_size);
/**
Call this after a row has been appended to the model.
*/
void RowAppended();
/**
Call this after a row has been changed.
*/
void RowChanged(unsigned int row);
/**
Call this after a row has been deleted.
*/
void RowDeleted(unsigned int row);
/**
Call this after a row has been inserted at the given position.
*/
void RowInserted(unsigned int before);
/**
Call this after a row has been prepended to the model.
*/
void RowPrepended();
/**
Call this after a value has been changed.
*/
void RowValueChanged(unsigned int row, unsigned int col);
/**
Call this after rows have been deleted.
The array will internally get copied and sorted in descending order so
that the rows with the highest position will be deleted first.
*/
void RowsDeleted(const wxArrayInt& rows);
/**
Called in order to set a value in the model.
*/
virtual bool SetValueByRow(const wxVariant& variant, unsigned int row,
unsigned int col) = 0;
};
/**
@class wxDataViewIndexListModel
wxDataViewIndexListModel is a specialized data model which lets you address
an item by its position (row) rather than its wxDataViewItem (which you can
obtain from this class).
This model also provides its own wxDataViewIndexListModel::Compare
method which sorts the model's data by the index.
This model is not a virtual model since the control stores each wxDataViewItem.
Use wxDataViewVirtualListModel if you need to display millions of items or
have other reason to use a virtual control.
@see wxDataViewListModel for the API.
@library{wxadv}
@category{dvc}
*/
class wxDataViewIndexListModel : public wxDataViewListModel
{
public:
/**
Constructor.
*/
wxDataViewIndexListModel(unsigned int initial_size = 0);
};
/**
@class wxDataViewVirtualListModel
wxDataViewVirtualListModel is a specialized data model which lets you address
an item by its position (row) rather than its wxDataViewItem and as such offers
the exact same interface as wxDataViewIndexListModel.
The important difference is that under platforms other than OS X, using this
model will result in a truly virtual control able to handle millions of items
as the control doesn't store any item (a feature not supported by OS X).
@see wxDataViewListModel for the API.
@library{wxadv}
@category{dvc}
*/
class wxDataViewVirtualListModel : public wxDataViewListModel
{
public:
/**
Constructor.
*/
wxDataViewVirtualListModel(unsigned int initial_size = 0);
};
/**
@class wxDataViewItemAttr
This class is used to indicate to a wxDataViewCtrl that a certain item
(see wxDataViewItem) has extra font attributes for its renderer.
For this, it is required to override wxDataViewModel::GetAttr.
Attributes are currently only supported by wxDataViewTextRendererText.
@library{wxadv}
@category{dvc}
*/
class wxDataViewItemAttr
{
public:
/**
Constructor.
*/
wxDataViewItemAttr();
/**
Call this to indicate that the item shall be displayed in bold text.
*/
void SetBold(bool set);
/**
Call this to indicate that the item shall be displayed with that colour.
*/
void SetColour(const wxColour& colour);
/**
Call this to indicate that the item shall be displayed in italic text.
*/
void SetItalic(bool set);
};
/**
@class wxDataViewItem
wxDataViewItem is a small opaque class that represents an item in a wxDataViewCtrl
in a persistent way, i.e. independent of the position of the item in the control
or changes to its contents.
It must hold a unique ID of type @e void* in its only field and can be converted
to and from it.
If the ID is @NULL the wxDataViewItem is invalid and wxDataViewItem::IsOk will
return @false which used in many places in the API of wxDataViewCtrl to
indicate that e.g. no item was found. An ID of @NULL is also used to indicate
the invisible root. Examples for this are wxDataViewModel::GetParent and
wxDataViewModel::GetChildren.
@library{wxadv}
@category{dvc}
*/
class wxDataViewItem
{
public:
//@{
/**
Constructor.
*/
wxDataViewItem(void* id = NULL);
wxDataViewItem(const wxDataViewItem& item);
//@}
/**
Returns the ID.
*/
void* GetID() const;
/**
Returns @true if the ID is not @NULL.
*/
bool IsOk() const;
};
/**
@class wxDataViewCtrl
wxDataViewCtrl is a control to display data either in a tree like fashion or
in a tabular form or both.
If you only need to display a simple tree structure with an API more like the
older wxTreeCtrl class, then the specialized wxDataViewTreeCtrl can be used.
Likewise, if you only want to display simple table structure you can use
the specialized wxDataViewListCtrl class. Both wxDataViewTreeCtrl and
wxDataViewListCtrl can be used without defining your own wxDataViewModel.
A wxDataViewItem is used to represent a (visible) item in the control.
Unlike wxListCtrl, wxDataViewCtrl doesn't get its data from the user through
virtual functions or by setting it directly. Instead you need to write your own
wxDataViewModel and associate it with this control.
Then you need to add a number of wxDataViewColumn to this control to define
what each column shall display. Each wxDataViewColumn in turn owns 1 instance
of a wxDataViewRenderer to render its cells.
A number of standard renderers for rendering text, dates, images, toggle,
a progress bar etc. are provided. Additionally, the user can write custom
renderers deriving from wxDataViewCustomRenderer for displaying anything.
All data transfer from the control to the model and the user code is done
through wxVariant which can be extended to support more data formats as necessary.
Accordingly, all type information uses the strings returned from wxVariant::GetType.
@beginStyleTable
@style{wxDV_SINGLE}
Single selection mode. This is the default.
@style{wxDV_MULTIPLE}
Multiple selection mode.
@style{wxDV_ROW_LINES}
Use alternating colours for rows if supported by platform and theme.
Currently only supported by the native GTK and OS X implementations
but not by the generic one.
@style{wxDV_HORIZ_RULES}
Display fine rules between row if supported.
@style{wxDV_VERT_RULES}
Display fine rules between columns is supported.
@style{wxDV_VARIABLE_LINE_HEIGHT}
Allow variable line heights.
This can be inefficient when displaying large number of items.
@style{wxDV_NO_HEADER}
Do not show column headers (which are shown by default).
@endStyleTable
@beginEventEmissionTable{wxDataViewEvent}
@event{EVT_DATAVIEW_SELECTION_CHANGED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED event.
@event{EVT_DATAVIEW_ITEM_ACTIVATED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED event.
@event{EVT_DATAVIEW_ITEM_START_EDITING(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_STARTED event. This
event can be vetoed in order to prevent editing on an item by item
basis. Still experimental.
@event{EVT_DATAVIEW_ITEM_EDITING_STARTED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_STARTED event.
@event{EVT_DATAVIEW_ITEM_EDITING_DONE(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_DONE event.
@event{EVT_DATAVIEW_ITEM_COLLAPSING(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING event.
@event{EVT_DATAVIEW_ITEM_COLLAPSED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED event.
@event{EVT_DATAVIEW_ITEM_EXPANDING(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING event.
@event{EVT_DATAVIEW_ITEM_EXPANDED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED event.
@event{EVT_DATAVIEW_ITEM_VALUE_CHANGED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED event.
@event{EVT_DATAVIEW_ITEM_CONTEXT_MENU(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU event.
@event{EVT_DATAVIEW_COLUMN_HEADER_CLICK(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICKED event.
@event{EVT_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICKED event.
@event{EVT_DATAVIEW_COLUMN_SORTED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED event.
@event{EVT_DATAVIEW_COLUMN_REORDERED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_REORDERED event.
@event{EVT_DATAVIEW_ITEM_BEGIN_DRAG(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG event.
@event{EVT_DATAVIEW_ITEM_DROP_POSSIBLE(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE event.
@event{EVT_DATAVIEW_ITEM_DROP(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_DROP event.
@endEventTable
@library{wxadv}
@category{ctrl,dvc}
@appearance{dataviewctrl.png}
*/
class wxDataViewCtrl : public wxControl
{
public:
/**
Default Constructor.
*/
wxDataViewCtrl();
/**
Constructor. Calls Create().
*/
wxDataViewCtrl(wxWindow* parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = 0,
const wxValidator& validator = wxDefaultValidator,
const wxString& name = wxDataViewCtrlNameStr);
/**
Destructor.
*/
virtual ~wxDataViewCtrl();
/**
Appends a wxDataViewColumn to the control. Returns @true on success.
Note that there is a number of short cut methods which implicitly create
a wxDataViewColumn and a wxDataViewRenderer for it (see below).
*/
virtual bool AppendColumn(wxDataViewColumn* col);
/**
Prepends a wxDataViewColumn to the control. Returns @true on success.
Note that there is a number of short cut methods which implicitly create
a wxDataViewColumn and a wxDataViewRenderer for it.
*/
virtual bool PrependColumn(wxDataViewColumn* col);
/**
Inserts a wxDataViewColumn to the control. Returns @true on success.
*/
virtual bool InsertColumn(unsigned int pos, wxDataViewColumn* col);
//@{
/**
Appends a column for rendering a bitmap. Returns the wxDataViewColumn
created in the function or @NULL on failure.
*/
wxDataViewColumn* AppendBitmapColumn(const wxString& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
wxDataViewColumn* AppendBitmapColumn(const wxBitmap& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
//@}
//@{
/**
Appends a column for rendering a date. Returns the wxDataViewColumn
created in the function or @NULL on failure.
@note The @a align parameter is applied to both the column header and
the column renderer.
*/
wxDataViewColumn* AppendDateColumn(const wxString& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_ACTIVATABLE,
int width = -1,
wxAlignment align = wxALIGN_NOT,
int flags = wxDATAVIEW_COL_RESIZABLE);
wxDataViewColumn* AppendDateColumn(const wxBitmap& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_ACTIVATABLE,
int width = -1,
wxAlignment align = wxALIGN_NOT,
int flags = wxDATAVIEW_COL_RESIZABLE);
//@}
//@{
/**
Appends a column for rendering text with an icon. Returns the wxDataViewColumn
created in the function or @NULL on failure.
This method uses the wxDataViewIconTextRenderer class.
@note The @a align parameter is applied to both the column header and
the column renderer.
*/
wxDataViewColumn* AppendIconTextColumn(const wxString& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1,
wxAlignment align = wxALIGN_NOT,
int flags = wxDATAVIEW_COL_RESIZABLE);
wxDataViewColumn* AppendIconTextColumn(const wxBitmap& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1,
wxAlignment align = wxALIGN_NOT,
int flags = wxDATAVIEW_COL_RESIZABLE);
//@}
//@{
/**
Appends a column for rendering a progress indicator. Returns the
wxDataViewColumn created in the function or @NULL on failure.
@note The @a align parameter is applied to both the column header and
the column renderer.
*/
wxDataViewColumn* AppendProgressColumn(const wxString& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = 80,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
wxDataViewColumn* AppendProgressColumn(const wxBitmap& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = 80,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
//@}
//@{
/**
Appends a column for rendering text. Returns the wxDataViewColumn
created in the function or @NULL on failure.
@note The @a align parameter is applied to both the column header and
the column renderer.
*/
wxDataViewColumn* AppendTextColumn(const wxString& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1,
wxAlignment align = wxALIGN_NOT,
int flags = wxDATAVIEW_COL_RESIZABLE);
wxDataViewColumn* AppendTextColumn(const wxBitmap& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1,
wxAlignment align = wxALIGN_NOT,
int flags = wxDATAVIEW_COL_RESIZABLE);
//@}
//@{
/**
Appends a column for rendering a toggle. Returns the wxDataViewColumn
created in the function or @NULL on failure.
@note The @a align parameter is applied to both the column header and
the column renderer.
*/
wxDataViewColumn* AppendToggleColumn(const wxString& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = 30,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
wxDataViewColumn* AppendToggleColumn(const wxBitmap& label,
unsigned int model_column,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = 30,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
//@}
/**
Associates a wxDataViewModel with the control.
This increases the reference count of the model by 1.
*/
virtual bool AssociateModel(wxDataViewModel* model);
/**
Removes all columns.
*/
virtual bool ClearColumns();
/**
Collapses the item.
*/
virtual void Collapse(const wxDataViewItem& item);
/**
Create the control. Useful for two step creation.
*/
bool Create(wxWindow* parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = 0,
const wxValidator& validator = wxDefaultValidator,
const wxString& name = wxDataViewCtrlNameStr);
/**
Deletes given column.
*/
virtual bool DeleteColumn(wxDataViewColumn* column);
/**
Enable drag operations using the given @a format.
*/
virtual bool EnableDragSource( const wxDataFormat &format );
/**
Enable drop operations using the given @a format.
*/
virtual bool EnableDropTarget( const wxDataFormat &format );
/**
Call this to ensure that the given item is visible.
*/
virtual void EnsureVisible(const wxDataViewItem& item,
const wxDataViewColumn* column = NULL);
/**
Expands the item.
*/
virtual void Expand(const wxDataViewItem& item);
/**
Expands all ancestors of the @a item. This method also
ensures that the item itself as well as all ancestor
items have been read from the model by the control.
*/
virtual void ExpandAncestors( const wxDataViewItem & item );
/**
Returns pointer to the column. @a pos refers to the position in the
control which may change after reordering columns by the user.
*/
virtual wxDataViewColumn* GetColumn(unsigned int pos) const;
/**
Returns the number of columns.
*/
virtual unsigned int GetColumnCount() const;
/**
Returns the position of the column or -1 if not found in the control.
*/
virtual int GetColumnPosition(const wxDataViewColumn* column) const;
/**
Returns column containing the expanders.
*/
wxDataViewColumn* GetExpanderColumn() const;
/**
Returns the currently focused item.
This is the item that the keyboard commands apply to. It may be invalid
if there is no focus currently.
This method is mostly useful for the controls with @c wxDV_MULTIPLE
style as in the case of single selection it returns the same thing as
GetSelection().
Notice that under all platforms except Mac OS X the currently focused
item may be selected or not but under OS X the current item is always
selected.
@see SetCurrentItem()
@since 2.9.2
*/
wxDataViewItem GetCurrentItem() const;
/**
Returns indentation.
*/
int GetIndent() const;
/**
Returns item rect.
*/
virtual wxRect GetItemRect(const wxDataViewItem& item,
const wxDataViewColumn* col = NULL) const;
/**
Returns pointer to the data model associated with the control (if any).
*/
wxDataViewModel* GetModel();
/**
Returns first selected item or an invalid item if none is selected.
*/
virtual wxDataViewItem GetSelection() const;
/**
Fills @a sel with currently selected items and returns their number.
*/
virtual int GetSelections(wxDataViewItemArray& sel) const;
/**
Returns the wxDataViewColumn currently responsible for sorting
or @NULL if none has been selected.
*/
virtual wxDataViewColumn* GetSortingColumn() const;
/**
Hittest.
*/
virtual void HitTest(const wxPoint& point, wxDataViewItem& item,
wxDataViewColumn*& col) const;
/**
Return @true if the item is expanded.
*/
virtual bool IsExpanded(const wxDataViewItem& item) const;
/**
Return @true if the item is selected.
*/
virtual bool IsSelected(const wxDataViewItem& item) const;
/**
Select the given item.
In single selection mode this changes the (unique) currently selected
item. In multi selection mode, the @a item is selected and the
previously selected items remain selected.
*/
virtual void Select(const wxDataViewItem& item);
/**
Select all items.
*/
virtual void SelectAll();
/**
Set which column shall contain the tree-like expanders.
*/
void SetExpanderColumn(wxDataViewColumn* col);
/**
Changes the currently focused item.
The @a item parameter must be valid, there is no way to remove the
current item from the control.
In single selection mode, calling this method is the same as calling
Select() and is thus not very useful. In multiple selection mode this
method only moves the current item however without changing the
selection except under OS X where the current item is always selected,
so calling SetCurrentItem() selects @a item if it hadn't been selected
before.
@see GetCurrentItem()
@since 2.9.2
*/
void SetCurrentItem(const wxDataViewItem& item);
/**
Sets the indentation.
*/
void SetIndent(int indent);
/**
Sets the selection to the array of wxDataViewItems.
*/
virtual void SetSelections(const wxDataViewItemArray& sel);
/**
Unselect the given item.
*/
virtual void Unselect(const wxDataViewItem& item);
/**
Unselect all item.
This method only has effect if multiple selections are allowed.
*/
virtual void UnselectAll();
};
/**
@class wxDataViewModelNotifier
A wxDataViewModelNotifier instance is owned by a wxDataViewModel and mirrors
its notification interface.
See the documentation of that class for further information.
@library{wxadv}
@category{dvc}
*/
class wxDataViewModelNotifier
{
public:
/**
Constructor.
*/
wxDataViewModelNotifier();
/**
Destructor.
*/
virtual ~wxDataViewModelNotifier();
/**
Called by owning model.
*/
virtual bool Cleared() = 0;
/**
Get owning wxDataViewModel.
*/
wxDataViewModel* GetOwner() const;
/**
Called by owning model.
*/
virtual bool ItemAdded(const wxDataViewItem& parent,
const wxDataViewItem& item) = 0;
/**
Called by owning model.
*/
virtual bool ItemChanged(const wxDataViewItem& item) = 0;
/**
Called by owning model.
*/
virtual bool ItemDeleted(const wxDataViewItem& parent,
const wxDataViewItem& item) = 0;
/**
Called by owning model.
*/
virtual bool ItemsAdded(const wxDataViewItem& parent,
const wxDataViewItemArray& items);
/**
Called by owning model.
*/
virtual bool ItemsChanged(const wxDataViewItemArray& items);
/**
Called by owning model.
*/
virtual bool ItemsDeleted(const wxDataViewItem& parent,
const wxDataViewItemArray& items);
/**
Called by owning model.
*/
virtual void Resort() = 0;
/**
Set owner of this notifier. Used internally.
*/
void SetOwner(wxDataViewModel* owner);
/**
Called by owning model.
*/
virtual bool ValueChanged(const wxDataViewItem& item, unsigned int col) = 0;
};
/**
The mode of a data-view cell; see wxDataViewRenderer for more info.
*/
enum wxDataViewCellMode
{
wxDATAVIEW_CELL_INERT,
/**
Indicates that the user can double click the cell and something will
happen (e.g. a window for editing a date will pop up).
*/
wxDATAVIEW_CELL_ACTIVATABLE,
/**
Indicates that the user can edit the data in-place, i.e. an control
will show up after a slow click on the cell. This behaviour is best
known from changing the filename in most file managers etc.
*/
wxDATAVIEW_CELL_EDITABLE
};
/**
The values of this enum controls how a wxDataViewRenderer should display
its contents in a cell.
*/
enum wxDataViewCellRenderState
{
wxDATAVIEW_CELL_SELECTED = 1,
wxDATAVIEW_CELL_PRELIT = 2,
wxDATAVIEW_CELL_INSENSITIVE = 4,
wxDATAVIEW_CELL_FOCUSED = 8
};
/**
@class wxDataViewRenderer
This class is used by wxDataViewCtrl to render the individual cells.
One instance of a renderer class is owned by a wxDataViewColumn.
There is a number of ready-to-use renderers provided:
- wxDataViewTextRenderer,
- wxDataViewIconTextRenderer,
- wxDataViewToggleRenderer,
- wxDataViewProgressRenderer,
- wxDataViewBitmapRenderer,
- wxDataViewDateRenderer,
- wxDataViewSpinRenderer.
- wxDataViewChoiceRenderer.
Additionally, the user can write own renderers by deriving from
wxDataViewCustomRenderer.
The ::wxDataViewCellMode and ::wxDataViewCellRenderState flags accepted
by the constructors respectively controls what actions the cell data allows
and how the renderer should display its contents in a cell.
@library{wxadv}
@category{dvc}
*/
class wxDataViewRenderer : public wxObject
{
public:
/**
Constructor.
*/
wxDataViewRenderer(const wxString& varianttype,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int align = wxDVR_DEFAULT_ALIGNMENT );
/**
Enable or disable replacing parts of the item text with ellipsis to
make it fit the column width.
This method only makes sense for the renderers working with text, such
as wxDataViewTextRenderer or wxDataViewIconTextRenderer.
By default wxELLIPSIZE_MIDDLE is used.
@param mode
Ellipsization mode, use wxELLIPSIZE_NONE to disable.
@since 2.9.1
*/
void EnableEllipsize(wxEllipsizeMode mode = wxELLIPSIZE_MIDDLE);
/**
Disable replacing parts of the item text with ellipsis.
If ellipsizing is disabled, the string will be truncated if it doesn't
fit.
This is the same as @code EnableEllipsize(wxELLIPSIZE_NONE) @endcode.
@since 2.9.1
*/
void DisableEllipsize();
/**
Returns the alignment. See SetAlignment()
*/
virtual int GetAlignment() const;
/**
Returns the ellipsize mode used by the renderer.
If the return value is wxELLIPSIZE_NONE, the text is simply truncated
if it doesn't fit.
@see EnableEllipsize()
*/
wxEllipsizeMode GetEllipsizeMode() const;
/**
Returns the cell mode.
*/
virtual wxDataViewCellMode GetMode() const;
/**
Returns pointer to the owning wxDataViewColumn.
*/
wxDataViewColumn* GetOwner() const;
/**
This methods retrieves the value from the renderer in order to
transfer the value back to the data model.
Returns @false on failure.
*/
virtual bool GetValue(wxVariant& value) const = 0;
/**
Returns a string with the type of the wxVariant supported by this renderer.
*/
wxString GetVariantType() const;
/**
Sets the alignment of the renderer's content.
The default value of @c wxDVR_DEFAULT_ALIGMENT indicates that the content
should have the same alignment as the column header.
The method is not implemented under OS X and the renderer always aligns
its contents as the column header on that platform. The other platforms
support both vertical and horizontal alignment.
*/
virtual void SetAlignment( int align );
/**
Sets the owning wxDataViewColumn.
This is usually called from within wxDataViewColumn.
*/
void SetOwner(wxDataViewColumn* owner);
/**
Set the value of the renderer (and thus its cell) to @a value.
The internal code will then render this cell with this data.
*/
virtual bool SetValue(const wxVariant& value) = 0;
/**
Before data is committed to the data model, it is passed to this
method where it can be checked for validity. This can also be
used for checking a valid range or limiting the user input in
a certain aspect (e.g. max number of characters or only alphanumeric
input, ASCII only etc.). Return @false if the value is not valid.
Please note that due to implementation limitations, this validation
is done after the editing control already is destroyed and the
editing process finished.
*/
virtual bool Validate(wxVariant& value);
};
/**
@class wxDataViewTextRenderer
wxDataViewTextRenderer is used for rendering text.
It supports in-place editing if desired.
@library{wxadv}
@category{dvc}
*/
class wxDataViewTextRenderer : public wxDataViewRenderer
{
public:
/**
The ctor.
*/
wxDataViewTextRenderer(const wxString& varianttype = "string",
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int align = wxDVR_DEFAULT_ALIGNMENT );
};
/**
@class wxDataViewIconTextRenderer
The wxDataViewIconTextRenderer class is used to display text with
a small icon next to it as it is typically done in a file manager.
This classes uses the wxDataViewIconText helper class to store its data.
wxDataViewIconText can be converted to and from a wxVariant using the left
shift operator.
@library{wxadv}
@category{dvc}
*/
class wxDataViewIconTextRenderer : public wxDataViewRenderer
{
public:
/**
The ctor.
*/
wxDataViewIconTextRenderer(const wxString& varianttype = "wxDataViewIconText",
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int align = wxDVR_DEFAULT_ALIGNMENT );
};
/**
@class wxDataViewProgressRenderer
This class is used by wxDataViewCtrl to render progress bars.
@library{wxadv}
@category{dvc}
*/
class wxDataViewProgressRenderer : public wxDataViewRenderer
{
public:
/**
The ctor.
*/
wxDataViewProgressRenderer(const wxString& label = wxEmptyString,
const wxString& varianttype = "long",
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int align = wxDVR_DEFAULT_ALIGNMENT );
};
/**
@class wxDataViewSpinRenderer
This is a specialized renderer for rendering integer values.
It supports modifying the values in-place by using a wxSpinCtrl.
The renderer only support variants of type @e long.
@library{wxadv}
@category{dvc}
*/
class wxDataViewSpinRenderer : public wxDataViewCustomRenderer
{
public:
/**
Constructor.
@a min and @a max indicate the minimum and maximum values for the wxSpinCtrl.
*/
wxDataViewSpinRenderer(int min, int max,
wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
int align = wxDVR_DEFAULT_ALIGNMENT);
};
/**
@class wxDataViewToggleRenderer
This class is used by wxDataViewCtrl to render toggle controls.
@library{wxadv}
@category{dvc}
*/
class wxDataViewToggleRenderer : public wxDataViewRenderer
{
public:
/**
The ctor.
*/
wxDataViewToggleRenderer(const wxString& varianttype = "bool",
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int align = wxDVR_DEFAULT_ALIGNMENT);
};
/**
@class wxDataViewChoiceRenderer
This class is used by wxDataViewCtrl to render choice controls.
It stores a string so that SetValue() and GetValue() operate
on a variant holding a string.
@library{wxadv}
@category{dvc}
*/
class wxDataViewChoiceRenderer: public wxDataViewRenderer
{
public:
/**
The ctor.
*/
wxDataViewChoiceRenderer( const wxArrayString &choices,
wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
int alignment = wxDVR_DEFAULT_ALIGNMENT );
/**
Returns the choice referred to by index.
*/
wxString GetChoice(size_t index) const;
/**
Returns all choices.
*/
const wxArrayString& GetChoices() const;
};
/**
@class wxDataViewDateRenderer
This class is used by wxDataViewCtrl to render calendar controls.
@library{wxadv}
@category{dvc}
*/
class wxDataViewDateRenderer : public wxDataViewRenderer
{
public:
/**
The ctor.
*/
wxDataViewDateRenderer(const wxString& varianttype = "datetime",
wxDataViewCellMode mode = wxDATAVIEW_CELL_ACTIVATABLE,
int align = wxDVR_DEFAULT_ALIGNMENT);
};
/**
@class wxDataViewCustomRenderer
You need to derive a new class from wxDataViewCustomRenderer in
order to write a new renderer.
You need to override at least wxDataViewRenderer::SetValue, wxDataViewRenderer::GetValue,
wxDataViewCustomRenderer::GetSize and wxDataViewCustomRenderer::Render.
If you want your renderer to support in-place editing then you also need to override
wxDataViewCustomRenderer::HasEditorCtrl, wxDataViewCustomRenderer::CreateEditorCtrl
and wxDataViewCustomRenderer::GetValueFromEditorCtrl.
Note that a special event handler will be pushed onto that editor control
which handles @e \<ENTER\> and focus out events in order to end the editing.
@library{wxadv}
@category{dvc}
*/
class wxDataViewCustomRenderer : public wxDataViewRenderer
{
public:
/**
Constructor.
*/
wxDataViewCustomRenderer(const wxString& varianttype = "string",
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int align = -1, bool no_init = false);
/**
Destructor.
*/
virtual ~wxDataViewCustomRenderer();
/**
Override this to react to double clicks or ENTER.
This method will only be called in wxDATAVIEW_CELL_ACTIVATABLE mode.
*/
virtual bool Activate( const wxRect& cell,
wxDataViewModel* model,
const wxDataViewItem & item,
unsigned int col );
/**
Override this to create the actual editor control once editing
is about to start.
@a parent is the parent of the editor control, @a labelRect indicates the
position and size of the editor control and @a value is its initial value:
@code
{
long l = value;
return new wxSpinCtrl( parent, wxID_ANY, wxEmptyString,
labelRect.GetTopLeft(), labelRect.GetSize(), 0, 0, 100, l );
}
@endcode
*/
virtual wxWindow* CreateEditorCtrl(wxWindow* parent,
wxRect labelRect,
const wxVariant& value);
/**
Return the attribute to be used for rendering.
This function may be called from Render() implementation to use the
attributes defined for the item if the renderer supports them.
Notice that when Render() is called, the wxDC object passed to it is
already set up to use the correct attributes (e.g. its font is set to
bold or italic version if wxDataViewItemAttr::GetBold() or GetItalic()
returns true) so it may not be necessary to call it explicitly if you
only want to render text using the items attributes.
@since 2.9.1
*/
const wxDataViewItemAttr& GetAttr() const;
/**
Return size required to show content.
*/
virtual wxSize GetSize() const = 0;
/**
Override this so that the renderer can get the value from the editor
control (pointed to by @a editor):
@code
{
wxSpinCtrl *sc = (wxSpinCtrl*) editor;
long l = sc->GetValue();
value = l;
return true;
}
@endcode
*/
virtual bool GetValueFromEditorCtrl(wxWindow* editor,
wxVariant& value);
/**
Override this and make it return @true in order to
indicate that this renderer supports in-place editing.
*/
virtual bool HasEditorCtrl() const;
/**
Override this to react to a left click.
This method will only be called in @c wxDATAVIEW_CELL_ACTIVATABLE mode.
*/
virtual bool LeftClick( const wxPoint& cursor,
const wxRect& cell,
wxDataViewModel * model,
const wxDataViewItem & item,
unsigned int col );
/**
Override this to render the cell.
Before this is called, wxDataViewRenderer::SetValue was called
so that this instance knows what to render.
*/
virtual bool Render(wxRect cell, wxDC* dc, int state) = 0;
/**
This method should be called from within Render() whenever you need to
render simple text.
This will ensure that the correct colour, font and vertical alignment will
be chosen so the text will look the same as text drawn by native renderers.
*/
void RenderText(const wxString& text, int xoffset, wxRect cell,
wxDC* dc, int state);
/**
Override this to start a drag operation. Not yet supported.
*/
virtual bool StartDrag(const wxPoint& cursor,
const wxRect& cell,
wxDataViewModel* model,
const wxDataViewItem & item,
unsigned int col);
};
/**
@class wxDataViewBitmapRenderer
This class is used by wxDataViewCtrl to render bitmap controls.
@library{wxadv}
@category{dvc}
*/
class wxDataViewBitmapRenderer : public wxDataViewRenderer
{
public:
/**
The ctor.
*/
wxDataViewBitmapRenderer(const wxString& varianttype = "wxBitmap",
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int align = wxDVR_DEFAULT_ALIGNMENT);
};
/**
The flags used by wxDataViewColumn.
Can be combined together.
*/
enum wxDataViewColumnFlags
{
wxDATAVIEW_COL_RESIZABLE = 1,
wxDATAVIEW_COL_SORTABLE = 2,
wxDATAVIEW_COL_REORDERABLE = 4,
wxDATAVIEW_COL_HIDDEN = 8
};
/**
@class wxDataViewColumn
This class represents a column in a wxDataViewCtrl.
One wxDataViewColumn is bound to one column in the data model to which the
wxDataViewCtrl has been associated.
An instance of wxDataViewRenderer is used by this class to render its data.
@library{wxadv}
@category{dvc}
*/
class wxDataViewColumn : public wxSettableHeaderColumn
{
public:
/**
Constructs a text column.
@param title
The title of the column.
@param renderer
The class which will render the contents of this column.
@param model_column
The index of the model's column which is associated with this object.
@param width
The width of the column.
The @c wxDVC_DEFAULT_WIDTH value is the fixed default value.
@param align
The alignment of the column title.
@param flags
One or more flags of the ::wxDataViewColumnFlags enumeration.
*/
wxDataViewColumn(const wxString& title,
wxDataViewRenderer* renderer,
unsigned int model_column,
int width = wxDVC_DEFAULT_WIDTH,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
/**
Constructs a bitmap column.
@param bitmap
The bitmap of the column.
@param renderer
The class which will render the contents of this column.
@param model_column
The index of the model's column which is associated with this object.
@param width
The width of the column.
The @c wxDVC_DEFAULT_WIDTH value is the fixed default value.
@param align
The alignment of the column title.
@param flags
One or more flags of the ::wxDataViewColumnFlags enumeration.
*/
wxDataViewColumn(const wxBitmap& bitmap,
wxDataViewRenderer* renderer,
unsigned int model_column,
int width = wxDVC_DEFAULT_WIDTH,
wxAlignment align = wxALIGN_CENTER,
int flags = wxDATAVIEW_COL_RESIZABLE);
/**
Returns the index of the column of the model, which this
wxDataViewColumn is displaying.
*/
unsigned int GetModelColumn() const;
/**
Returns the owning wxDataViewCtrl.
*/
wxDataViewCtrl* GetOwner() const;
/**
Returns the renderer of this wxDataViewColumn.
@see wxDataViewRenderer.
*/
wxDataViewRenderer* GetRenderer() const;
};
/**
@class wxDataViewListCtrl
This class is a wxDataViewCtrl which internally uses a wxDataViewListStore
and forwards most of its API to that class.
The purpose of this class is to offer a simple way to display and
edit a small table of data without having to write your own wxDataViewModel.
@code
wxDataViewListCtrl *listctrl = new wxDataViewListCtrl( parent, wxID_ANY );
listctrl->AppendToggleColumn( "Toggle" );
listctrl->AppendTextColumn( "Text" );
wxVector<wxVariant> data;
data.push_back( wxVariant(true) );
data.push_back( wxVariant("row 1") );
listctrl->AppendItem( data );
data.clear();
data.push_back( wxVariant(false) );
data.push_back( wxVariant("row 3") );
listctrl->AppendItem( data );
@endcode
@beginStyleTable
See wxDataViewCtrl for the list of supported styles.
@endStyleTable
@beginEventEmissionTable
See wxDataViewCtrl for the list of events emitted by this class.
@endEventTable
@library{wxadv}
@category{ctrl,dvc}
*/
class wxDataViewListCtrl: public wxDataViewCtrl
{
public:
/**
Default ctor.
*/
wxDataViewListCtrl();
/**
Constructor. Calls Create().
*/
wxDataViewListCtrl( wxWindow *parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = wxDV_ROW_LINES,
const wxValidator& validator = wxDefaultValidator );
/**
Destructor. Deletes the image list if any.
*/
~wxDataViewListCtrl();
/**
Creates the control and a wxDataViewListStore as its internal model.
*/
bool Create( wxWindow *parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = wxDV_ROW_LINES,
const wxValidator& validator = wxDefaultValidator );
//@{
/**
Returns the store.
*/
wxDataViewListStore *GetStore();
const wxDataViewListStore *GetStore() const;
//@}
/**
Returns the position of given @e item or wxNOT_FOUND if it's
not a valid item.
@since 2.9.2
*/
int ItemToRow(const wxDataViewItem &item) const;
/**
Returns the wxDataViewItem at the given @e row.
@since 2.9.2
*/
wxDataViewItem RowToItem(int row) const;
//@{
/**
@name Selection handling functions
*/
/**
Returns index of the selected row or wxNOT_FOUND.
@see wxDataViewCtrl::GetSelection()
@since 2.9.2
*/
int GetSelectedRow() const;
/**
Selects given row.
@see wxDataViewCtrl::Select()
@since 2.9.2
*/
void SelectRow(unsigned row);
/**
Unselects given row.
@see wxDataViewCtrl::Unselect()
@since 2.9.2
*/
void UnselectRow(unsigned row);
/**
Returns true if @a row is selected.
@see wxDataViewCtrl::IsSelected()
@since 2.9.2
*/
bool IsRowSelected(unsigned row) const;
//@}
/**
@name Column management functions
*/
//@{
/**
Appends a column to the control and additionally appends a
column to the store with the type string.
*/
virtual void AppendColumn( wxDataViewColumn *column );
/**
Appends a column to the control and additionally appends a
column to the list store with the type @a varianttype.
*/
void AppendColumn( wxDataViewColumn *column, const wxString &varianttype );
/**
Appends a text column to the control and the store.
See wxDataViewColumn::wxDataViewColumn for more info about
the parameters.
*/
wxDataViewColumn *AppendTextColumn( const wxString &label,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1, wxAlignment align = wxALIGN_LEFT,
int flags = wxDATAVIEW_COL_RESIZABLE );
/**
Appends a toggle column to the control and the store.
See wxDataViewColumn::wxDataViewColumn for more info about
the parameters.
*/
wxDataViewColumn *AppendToggleColumn( const wxString &label,
wxDataViewCellMode mode = wxDATAVIEW_CELL_ACTIVATABLE,
int width = -1, wxAlignment align = wxALIGN_LEFT,
int flags = wxDATAVIEW_COL_RESIZABLE );
/**
Appends a progress column to the control and the store.
See wxDataViewColumn::wxDataViewColumn for more info about
the parameters.
*/
wxDataViewColumn *AppendProgressColumn( const wxString &label,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1, wxAlignment align = wxALIGN_LEFT,
int flags = wxDATAVIEW_COL_RESIZABLE );
/**
Appends an icon-and-text column to the control and the store.
See wxDataViewColumn::wxDataViewColumn for more info about
the parameters.
*/
wxDataViewColumn *AppendIconTextColumn( const wxString &label,
wxDataViewCellMode mode = wxDATAVIEW_CELL_INERT,
int width = -1, wxAlignment align = wxALIGN_LEFT,
int flags = wxDATAVIEW_COL_RESIZABLE );
/**
Inserts a column to the control and additionally inserts a
column to the store with the type string.
*/
virtual void InsertColumn( unsigned int pos, wxDataViewColumn *column );
/**
Inserts a column to the control and additionally inserts a
column to the list store with the type @a varianttype.
*/
void InsertColumn( unsigned int pos, wxDataViewColumn *column,
const wxString &varianttype );
/**
Prepends a column to the control and additionally prepends a
column to the store with the type string.
*/
virtual void PrependColumn( wxDataViewColumn *column );
/**
Prepends a column to the control and additionally prepends a
column to the list store with the type @a varianttype.
*/
void PrependColumn( wxDataViewColumn *column, const wxString &varianttype );
//@}
/**
@name Item management functions
*/
//@{
/**
Appends an item (=row) to the control and store.
*/
void AppendItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
/**
Prepends an item (=row) to the control and store.
*/
void PrependItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
/**
Inserts an item (=row) to the control and store.
*/
void InsertItem( unsigned int row, const wxVector<wxVariant> &values, wxClientData *data = NULL );
/**
Delete the row at position @a row.
*/
void DeleteItem( unsigned row );
/**
Delete all items (= all rows).
*/
void DeleteAllItems();
/**
Sets the value in the store and update the control.
*/
void SetValue( const wxVariant &value, unsigned int row, unsigned int col );
/**
Returns the value from the store.
*/
void GetValue( wxVariant &value, unsigned int row, unsigned int col );
/**
Sets the value in the store and update the control.
This method assumes that the string is stored in respective
column.
*/
void SetTextValue( const wxString &value, unsigned int row, unsigned int col );
/**
Returns the value from the store.
This method assumes that the string is stored in respective
column.
*/
wxString GetTextValue( unsigned int row, unsigned int col ) const;
/**
Sets the value in the store and update the control.
This method assumes that the boolean value is stored in
respective column.
*/
void SetToggleValue( bool value, unsigned int row, unsigned int col );
/**
Returns the value from the store.
This method assumes that the boolean value is stored in
respective column.
*/
bool GetToggleValue( unsigned int row, unsigned int col ) const;
//@}
};
/**
@class wxDataViewTreeCtrl
This class is a wxDataViewCtrl which internally uses a wxDataViewTreeStore
and forwards most of its API to that class.
Additionally, it uses a wxImageList to store a list of icons.
The main purpose of this class is to provide a simple upgrade path for code
using wxTreeCtrl.
@beginStyleTable
See wxDataViewCtrl for the list of supported styles.
@endStyleTable
@beginEventEmissionTable
See wxDataViewCtrl for the list of events emitted by this class.
@endEventTable
@library{wxadv}
@category{ctrl,dvc}
@appearance{dataviewtreectrl.png}
*/
class wxDataViewTreeCtrl : public wxDataViewCtrl
{
public:
/**
Default ctor.
*/
wxDataViewTreeCtrl();
/**
Constructor.
Calls Create().
*/
wxDataViewTreeCtrl(wxWindow* parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxDV_NO_HEADER | wxDV_ROW_LINES,
const wxValidator& validator = wxDefaultValidator);
/**
Destructor. Deletes the image list if any.
*/
virtual ~wxDataViewTreeCtrl();
/**
Appends a container to the given @a parent.
*/
wxDataViewItem AppendContainer(const wxDataViewItem& parent,
const wxString& text,
int icon = -1,
int expanded = -1,
wxClientData* data = NULL);
/**
Appends an item to the given @a parent.
*/
wxDataViewItem AppendItem(const wxDataViewItem& parent,
const wxString& text,
int icon = -1,
wxClientData* data = NULL);
/**
Creates the control and a wxDataViewTreeStore as its internal model.
The default tree column created by this method is an editable column
using wxDataViewIconTextRenderer as its renderer.
*/
bool Create(wxWindow* parent, wxWindowID id,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxDV_NO_HEADER | wxDV_ROW_LINES,
const wxValidator& validator = wxDefaultValidator);
/**
Calls the identical method from wxDataViewTreeStore.
*/
void DeleteAllItems();
/**
Calls the identical method from wxDataViewTreeStore.
*/
void DeleteChildren(const wxDataViewItem& item);
/**
Calls the identical method from wxDataViewTreeStore.
*/
void DeleteItem(const wxDataViewItem& item);
/**
Calls the identical method from wxDataViewTreeStore.
*/
int GetChildCount(const wxDataViewItem& parent) const;
/**
Returns the image list.
*/
wxImageList* GetImageList();
/**
Calls the identical method from wxDataViewTreeStore.
*/
wxClientData* GetItemData(const wxDataViewItem& item) const;
/**
Calls the identical method from wxDataViewTreeStore.
*/
const wxIcon& GetItemExpandedIcon(const wxDataViewItem& item) const;
/**
Calls the identical method from wxDataViewTreeStore.
*/
const wxIcon& GetItemIcon(const wxDataViewItem& item) const;
/**
Calls the identical method from wxDataViewTreeStore.
*/
wxString GetItemText(const wxDataViewItem& item) const;
/**
Calls the identical method from wxDataViewTreeStore.
*/
wxDataViewItem GetNthChild(const wxDataViewItem& parent,
unsigned int pos) const;
//@{
/**
Returns the store.
*/
wxDataViewTreeStore* GetStore();
const wxDataViewTreeStore* GetStore() const;
//@}
/**
Calls the same method from wxDataViewTreeStore but uses
an index position in the image list instead of a wxIcon.
*/
wxDataViewItem InsertContainer(const wxDataViewItem& parent,
const wxDataViewItem& previous,
const wxString& text,
int icon = -1,
int expanded = -1,
wxClientData* data = NULL);
/**
Calls the same method from wxDataViewTreeStore but uses
an index position in the image list instead of a wxIcon.
*/
wxDataViewItem InsertItem(const wxDataViewItem& parent,
const wxDataViewItem& previous,
const wxString& text,
int icon = -1,
wxClientData* data = NULL);
/**
Returns true if item is a container.
*/
bool IsContainer( const wxDataViewItem& item );
/**
Calls the same method from wxDataViewTreeStore but uses
an index position in the image list instead of a wxIcon.
*/
wxDataViewItem PrependContainer(const wxDataViewItem& parent,
const wxString& text,
int icon = -1,
int expanded = -1,
wxClientData* data = NULL);
/**
Calls the same method from wxDataViewTreeStore but uses
an index position in the image list instead of a wxIcon.
*/
wxDataViewItem PrependItem(const wxDataViewItem& parent,
const wxString& text,
int icon = -1,
wxClientData* data = NULL);
/**
Sets the image list.
*/
void SetImageList(wxImageList* imagelist);
/**
Calls the identical method from wxDataViewTreeStore.
*/
void SetItemData(const wxDataViewItem& item, wxClientData* data);
/**
Calls the identical method from wxDataViewTreeStore.
*/
void SetItemExpandedIcon(const wxDataViewItem& item,
const wxIcon& icon);
/**
Calls the identical method from wxDataViewTreeStore.
*/
void SetItemIcon(const wxDataViewItem& item, const wxIcon& icon);
/**
Calls the identical method from wxDataViewTreeStore.
*/
void SetItemText(const wxDataViewItem& item,
const wxString& text);
};
/**
@class wxDataViewListStore
wxDataViewListStore is a specialised wxDataViewModel for storing
a simple table of data. Since it derives from wxDataViewIndexListModel
its data is be accessed by row (i.e. by index) instead of only
by wxDataViewItem.
This class actually stores the values (therefore its name)
and implements all virtual methods from the base classes so it can be
used directly without having to derive any class from it, but it is
mostly used from within wxDataViewListCtrl.
@library{wxadv}
@category{dvc}
*/
class wxDataViewListStore: public wxDataViewIndexListModel
{
public:
/**
Constructor
*/
wxDataViewListStore();
/**
Destructor
*/
~wxDataViewListStore();
/**
Prepends a data column.
@a variantype indicates the type of values store in the column.
This does not automatically fill in any (default) values in
rows which exist in the store already.
*/
void PrependColumn( const wxString &varianttype );
/**
Inserts a data column before @a pos.
@a variantype indicates the type of values store in the column.
This does not automatically fill in any (default) values in
rows which exist in the store already.
*/
void InsertColumn( unsigned int pos, const wxString &varianttype );
/**
Appends a data column.
@a variantype indicates the type of values store in the column.
This does not automatically fill in any (default) values in
rows which exist in the store already.
*/
void AppendColumn( const wxString &varianttype );
/**
Appends an item (=row) and fills it with @a values.
The values must match the values specifies in the column
in number and type. No (default) values are filled in
automatically.
*/
void AppendItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
/**
Prepends an item (=row) and fills it with @a values.
The values must match the values specifies in the column
in number and type. No (default) values are filled in
automatically.
*/
void PrependItem( const wxVector<wxVariant> &values, wxClientData *data = NULL );
/**
Inserts an item (=row) and fills it with @a values.
The values must match the values specifies in the column
in number and type. No (default) values are filled in
automatically.
*/
void InsertItem( unsigned int row, const wxVector<wxVariant> &values, wxClientData *data = NULL );
/**
Delete the item (=row) at position @a pos.
*/
void DeleteItem( unsigned pos );
/**
Delete all item (=all rows) in the store.
*/
void DeleteAllItems();
/**
Overridden from wxDataViewModel
*/
virtual unsigned int GetColumnCount() const;
/**
Overridden from wxDataViewModel
*/
virtual wxString GetColumnType( unsigned int col ) const;
/**
Overridden from wxDataViewIndexListModel
*/
virtual void GetValueByRow( wxVariant &value,
unsigned int row, unsigned int col ) const;
/**
Overridden from wxDataViewIndexListModel
*/
virtual bool SetValueByRow( const wxVariant &value,
unsigned int row, unsigned int col );
};
/**
@class wxDataViewTreeStore
wxDataViewTreeStore is a specialised wxDataViewModel for storing simple
trees very much like wxTreeCtrl does and it offers a similar API.
This class actually stores the entire tree and the values (therefore its name)
and implements all virtual methods from the base class so it can be used directly
without having to derive any class from it, but it is mostly used from within
wxDataViewTreeCtrl.
@library{wxadv}
@category{dvc}
*/
class wxDataViewTreeStore : public wxDataViewModel
{
public:
/**
Constructor. Creates the invisible root node internally.
*/
wxDataViewTreeStore();
/**
Destructor.
*/
virtual ~wxDataViewTreeStore();
/**
Append a container.
*/
wxDataViewItem AppendContainer(const wxDataViewItem& parent,
const wxString& text,
const wxIcon& icon = wxNullIcon,
const wxIcon& expanded = wxNullIcon,
wxClientData* data = NULL);
/**
Append an item.
*/
wxDataViewItem AppendItem(const wxDataViewItem& parent,
const wxString& text,
const wxIcon& icon = wxNullIcon,
wxClientData* data = NULL);
/**
Delete all item in the model.
*/
void DeleteAllItems();
/**
Delete all children of the item, but not the item itself.
*/
void DeleteChildren(const wxDataViewItem& item);
/**
Delete this item.
*/
void DeleteItem(const wxDataViewItem& item);
/**
Return the number of children of item.
*/
int GetChildCount(const wxDataViewItem& parent) const;
/**
Returns the client data associated with the item.
*/
wxClientData* GetItemData(const wxDataViewItem& item) const;
/**
Returns the icon to display in expanded containers.
*/
const wxIcon& GetItemExpandedIcon(const wxDataViewItem& item) const;
/**
Returns the icon of the item.
*/
const wxIcon& GetItemIcon(const wxDataViewItem& item) const;
/**
Returns the text of the item.
*/
wxString GetItemText(const wxDataViewItem& item) const;
/**
Returns the nth child item of item.
*/
wxDataViewItem GetNthChild(const wxDataViewItem& parent,
unsigned int pos) const;
/**
Inserts a container after @a previous.
*/
wxDataViewItem InsertContainer(const wxDataViewItem& parent,
const wxDataViewItem& previous,
const wxString& text,
const wxIcon& icon = wxNullIcon,
const wxIcon& expanded = wxNullIcon,
wxClientData* data = NULL);
/**
Inserts an item after @a previous.
*/
wxDataViewItem InsertItem(const wxDataViewItem& parent,
const wxDataViewItem& previous,
const wxString& text,
const wxIcon& icon = wxNullIcon,
wxClientData* data = NULL);
/**
Inserts a container before the first child item or @a parent.
*/
wxDataViewItem PrependContainer(const wxDataViewItem& parent,
const wxString& text,
const wxIcon& icon = wxNullIcon,
const wxIcon& expanded = wxNullIcon,
wxClientData* data = NULL);
/**
Inserts an item before the first child item or @a parent.
*/
wxDataViewItem PrependItem(const wxDataViewItem& parent,
const wxString& text,
const wxIcon& icon = wxNullIcon,
wxClientData* data = NULL);
/**
Sets the client data associated with the item.
*/
void SetItemData(const wxDataViewItem& item, wxClientData* data);
/**
Sets the expanded icon for the item.
*/
void SetItemExpandedIcon(const wxDataViewItem& item,
const wxIcon& icon);
/**
Sets the icon for the item.
*/
void SetItemIcon(const wxDataViewItem& item, const wxIcon& icon);
};
/**
@class wxDataViewIconText
wxDataViewIconText is used by wxDataViewIconTextRenderer for data transfer.
This class can be converted to and from a wxVariant.
@library{wxadv}
@category{dvc}
*/
class wxDataViewIconText : public wxObject
{
public:
//@{
/**
Constructor.
*/
wxDataViewIconText(const wxString& text = wxEmptyString,
const wxIcon& icon = wxNullIcon);
wxDataViewIconText(const wxDataViewIconText& other);
//@}
/**
Gets the icon.
*/
const wxIcon& GetIcon() const;
/**
Gets the text.
*/
wxString GetText() const;
/**
Set the icon.
*/
void SetIcon(const wxIcon& icon);
/**
Set the text.
*/
void SetText(const wxString& text);
};
/**
@class wxDataViewEvent
This is the event class for the wxDataViewCtrl notifications.
@beginEventTable{wxDataViewEvent}
@event{EVT_DATAVIEW_SELECTION_CHANGED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED event.
@event{EVT_DATAVIEW_ITEM_ACTIVATED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED event.
@event{EVT_DATAVIEW_ITEM_EDITING_STARTED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_STARTED event.
@event{EVT_DATAVIEW_ITEM_EDITING_DONE(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EDITING_DONE event.
@event{EVT_DATAVIEW_ITEM_COLLAPSING(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING event.
@event{EVT_DATAVIEW_ITEM_COLLAPSED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED event.
@event{EVT_DATAVIEW_ITEM_EXPANDING(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING event.
@event{EVT_DATAVIEW_ITEM_EXPANDED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED event.
@event{EVT_DATAVIEW_ITEM_VALUE_CHANGED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED event.
@event{EVT_DATAVIEW_ITEM_CONTEXT_MENU(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU event.
@event{EVT_DATAVIEW_COLUMN_HEADER_CLICK(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICKED event.
@event{EVT_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICKED event.
@event{EVT_DATAVIEW_COLUMN_SORTED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED event.
@event{EVT_DATAVIEW_COLUMN_REORDERED(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_COLUMN_REORDERED event.
@event{EVT_DATAVIEW_ITEM_BEGIN_DRAG(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG event.
@event{EVT_DATAVIEW_ITEM_DROP_POSSIBLE(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE event.
@event{EVT_DATAVIEW_ITEM_DROP(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_ITEM_DROP event.
@event{EVT_DATAVIEW_CACHE_HINT(id, func)}
Process a @c wxEVT_COMMAND_DATAVIEW_CACHE_HINT event.
@endEventTable
@library{wxadv}
@category{events,dvc}
*/
class wxDataViewEvent : public wxNotifyEvent
{
public:
/**
Constructor. Typically used by wxWidgets internals only.
*/
wxDataViewEvent(wxEventType commandType = wxEVT_NULL,
int winid = 0);
/**
Returns the position of the column in the control or -1
if no column field was set by the event emitter.
*/
int GetColumn() const;
/**
Returns a pointer to the wxDataViewColumn from which
the event was emitted or @NULL.
*/
wxDataViewColumn* GetDataViewColumn() const;
/**
Returns the wxDataViewModel associated with the event.
*/
wxDataViewModel* GetModel() const;
/**
Returns the position of a context menu event in screen coordinates.
*/
wxPoint GetPosition() const;
/**
Returns a reference to a value.
*/
const wxVariant& GetValue() const;
/**
Sets the column index associated with this event.
*/
void SetColumn(int col);
/**
For @c wxEVT_DATAVIEW_COLUMN_HEADER_CLICKED only.
*/
void SetDataViewColumn(wxDataViewColumn* col);
/**
Sets the dataview model associated with this event.
*/
void SetModel(wxDataViewModel* model);
/**
Sets the value associated with this event.
*/
void SetValue(const wxVariant& value);
/**
Set wxDataObject for data transfer within a drag operation.
*/
void SetDataObject( wxDataObject *obj );
/**
Used internally. Gets associated wxDataObject for data transfer
within a drag operation.
*/
wxDataObject *GetDataObject() const;
/**
Used internally. Sets the wxDataFormat during a drop operation.
*/
void SetDataFormat( const wxDataFormat &format );
/**
Gets the wxDataFormat during a drop operation.
*/
wxDataFormat GetDataFormat() const;
/**
Used internally. Sets the data size for a drop data transfer.
*/
void SetDataSize( size_t size );
/**
Gets the data size for a drop data transfer.
*/
size_t GetDataSize() const;
/**
Used internally. Sets the data buffer for a drop data transfer.
*/
void SetDataBuffer( void* buf );
/**
Gets the data buffer for a drop data transfer.
*/
void *GetDataBuffer() const;
/**
Return the first row that will be displayed.
*/
int GetCacheFrom() const;
/**
Return the last row that will be displayed.
*/
int GetCacheTo() const;
};
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