// Name: combobox.h
// Purpose: interface of wxComboBox
// Author: wxWidgets team
-// RCS-ID: $Id$
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/**
@class wxComboBox
- A combobox is like a combination of an edit control and a listbox. It can
- be displayed as static list with editable or read-only text field; or a
- drop-down list with text field; or a drop-down list without a text field.
+ A combobox is like a combination of an edit control and a listbox.
+
+ It can be displayed as static list with editable or read-only text field;
+ or a drop-down list with text field; or a drop-down list without a text
+ field depending on the platform and presence of wxCB_READONLY style.
A combobox permits a single selection only. Combobox items are numbered
from zero.
If you need a customized combobox, have a look at wxComboCtrl,
wxOwnerDrawnComboBox, wxComboPopup and the ready-to-use wxBitmapComboBox.
+ Please refer to wxTextEntry documentation for the description of methods
+ operating with the text entry part of the combobox and to wxItemContainer
+ for the methods operating with the list of strings. Notice that at least
+ under MSW wxComboBox doesn't behave correctly if it contains strings
+ differing in case only so portable programs should avoid adding such
+ strings to this control.
+
@beginStyleTable
@style{wxCB_SIMPLE}
Creates a combobox with a permanently displayed list. Windows only.
@style{wxCB_DROPDOWN}
- Creates a combobox with a drop-down list.
+ Creates a combobox with a drop-down list. MSW and Motif only.
@style{wxCB_READONLY}
- Same as wxCB_DROPDOWN but only the strings specified as the combobox
- choices can be selected, it is impossible to select (even from a
- program) a string which is not in the choices list.
+ A combobox with this style behaves like a wxChoice (and may look in
+ the same way as well, although this is platform-dependent), i.e. it
+ allows the user to choose from the list of options but doesn't allow
+ to enter a value not present in the list.
@style{wxCB_SORT}
Sorts the entries in the list alphabetically.
@style{wxTE_PROCESS_ENTER}
- The control will generate the event wxEVT_COMMAND_TEXT_ENTER
+ The control will generate the event @c wxEVT_TEXT_ENTER
(otherwise pressing Enter key is either processed internally by the
- control or used for navigation between dialog controls). Windows
- only.
+ control or used for navigation between dialog controls).
@endStyleTable
- @beginEventTable{wxCommandEvent}
+ @beginEventEmissionTable{wxCommandEvent}
@event{EVT_COMBOBOX(id, func)}
- Process a wxEVT_COMMAND_COMBOBOX_SELECTED event, when an item on
+ Process a @c wxEVT_COMBOBOX event, when an item on
the list is selected. Note that calling GetValue() returns the new
value of selection.
@event{EVT_TEXT(id, func)}
- Process a wxEVT_COMMAND_TEXT_UPDATED event, when the combobox text
+ Process a @c wxEVT_TEXT event, when the combobox text
changes.
@event{EVT_TEXT_ENTER(id, func)}
- Process a wxEVT_COMMAND_TEXT_ENTER event, when RETURN is pressed in
+ Process a @c wxEVT_TEXT_ENTER event, when RETURN is pressed in
the combobox (notice that the combobox must have been created with
wxTE_PROCESS_ENTER style to receive this event).
+ @event{EVT_COMBOBOX_DROPDOWN(id, func)}
+ Process a @c wxEVT_COMBOBOX_DROPDOWN event, which is generated
+ when the list box part of the combo box is shown (drops down).
+ Notice that this event is currently only supported by wxMSW and
+ wxGTK with GTK+ 2.10 or later.
+ @event{EVT_COMBOBOX_CLOSEUP(id, func)}
+ Process a @c wxEVT_COMBOBOX_CLOSEUP event, which is generated
+ when the list box of the combo box disappears (closes up). This
+ event is only generated for the same platforms as
+ @c wxEVT_COMBOBOX_DROPDOWN above. Also note that only wxMSW
+ supports adding or deleting items in this event.
@endEventTable
@library{wxcore}
@category{ctrl}
- @appearance{combobox.png}
+ @appearance{combobox}
@see wxListBox, wxTextCtrl, wxChoice, wxCommandEvent
*/
-class wxComboBox : public wxControl, public wxItemContainer
+class wxComboBox : public wxControl,
+ public wxItemContainer,
+ public wxTextEntry
{
public:
/**
*/
wxComboBox();
- //@{
/**
Constructor, creating and showing a combobox.
Window identifier. The value wxID_ANY indicates a default value.
@param value
Initial selection string. An empty string indicates no selection.
+ Notice that for the controls with @c wxCB_READONLY style this
+ string must be one of the valid choices if it is not empty.
@param pos
Window position.
+ If ::wxDefaultPosition is specified then a default position is chosen.
@param size
- Window size. If wxDefaultSize is specified then the window is sized
- appropriately.
+ Window size.
+ If ::wxDefaultSize is specified then the window is sized appropriately.
@param n
Number of strings with which to initialise the control.
@param choices
@param name
Window name.
- @beginWxPythonOnly
- The wxComboBox constructor in wxPython reduces the @a n and @a choices
- arguments are to a single argument, which is a list of strings.
- @endWxPythonOnly
+ @beginWxPerlOnly
+ Not supported by wxPerl.
+ @endWxPerlOnly
@see Create(), wxValidator
*/
const wxString choices[] = NULL,
long style = 0,
const wxValidator& validator = wxDefaultValidator,
- const wxString& name = "comboBox");
+ const wxString& name = wxComboBoxNameStr);
/**
Constructor, creating and showing a combobox.
@param name
Window name.
- @beginWxPythonOnly
- The wxComboBox constructor in wxPython reduces the @a n and @a choices
- arguments are to a single argument, which is a list of strings.
- @endWxPythonOnly
+ @beginWxPerlOnly
+ Use an array reference for the @a choices parameter.
+ @endWxPerlOnly
@see Create(), wxValidator
*/
const wxArrayString& choices,
long style = 0,
const wxValidator& validator = wxDefaultValidator,
- const wxString& name = "comboBox");
- //@}
+ const wxString& name = wxComboBoxNameStr);
/**
Destructor, destroying the combobox.
//@}
/**
- Returns @true if the combobox is editable and there is a text selection
- to copy to the clipboard. Only available on Windows.
- */
- virtual bool CanCopy() const;
-
- /**
- Returns @true if the combobox is editable and there is a text selection
- to copy to the clipboard. Only available on Windows.
- */
- virtual bool CanCut() const;
-
- /**
- Returns @true if the combobox is editable and there is text on the
- clipboard that can be pasted into the text field. Only available on
- Windows.
- */
- virtual bool CanPaste() const;
-
- /**
- Returns @true if the combobox is editable and the last undo can be
- redone. Only available on Windows.
- */
- virtual bool CanRedo() const;
-
- /**
- Returns @true if the combobox is editable and the last edit can be
- undone. Only available on Windows.
- */
- virtual bool CanUndo() const;
+ Returns the item being selected right now.
- /**
- Copies the selected text to the clipboard.
- */
- virtual void Copy();
-
- /**
- Copies the selected text to the clipboard and removes the selection.
- */
- virtual void Cut();
-
- /**
This function does the same things as wxChoice::GetCurrentSelection()
and returns the item currently selected in the dropdown list if it's
open or the same thing as wxControlWithItems::GetSelection() otherwise.
virtual int GetCurrentSelection() const;
/**
- Returns the insertion point for the combobox's text field.
+ Same as wxTextEntry::GetInsertionPoint().
@note Under wxMSW, this function always returns 0 if the combobox
doesn't have the focus.
virtual long GetInsertionPoint() const;
/**
- Returns the last position in the combobox text field.
- */
- virtual long GetLastPosition() const;
+ IsEmpty() is not available in this class.
- /**
- This is the same as wxTextCtrl::GetSelection() for the text control
- which is part of the combobox. Notice that this is a different method
- from wxControlWithItems::GetSelection().
+ This method is documented here only to notice that it can't be used
+ with this class because of the ambiguity between the methods with the
+ same name inherited from wxItemContainer and wxTextEntry base classes.
- Currently this method is only implemented in wxMSW and wxGTK.
- */
- virtual void GetSelection(long* from, long* to) const;
+ Because of this, any attempt to call it results in a compilation error
+ and you should use either IsListEmpty() or IsTextEmpty() depending on
+ what exactly do you want to test.
+ */
+ bool IsEmpty() const;
/**
- Returns the current value in the combobox text field.
- */
- virtual wxString GetValue() const;
+ Returns true if the list of combobox choices is empty.
+
+ Use this method instead of (not available in this class) IsEmpty() to
+ test if the list of items is empty.
+
+ @since 2.9.3
+ */
+ bool IsListEmpty() const;
/**
- Pastes text from the clipboard to the text field.
- */
- virtual void Paste();
+ Returns true if the text of the combobox is empty.
+
+ Use this method instead of (not available in this class) IsEmpty() to
+ test if the text currently entered into the combobox is empty.
+
+ @since 2.9.3
+ */
+ bool IsTextEmpty() const;
/**
- Redoes the last undo in the text field. Windows only.
+ Same as wxTextEntry::SetSelection().
*/
- virtual void Redo();
+ virtual void SetSelection(long from, long to);
/**
- Removes the text between the two positions in the combobox text field.
+ Sets the text for the combobox text field.
- @param from
- The first position.
- @param to
- The last position.
- */
- virtual void Remove(long from, long to);
+ Notice that this method will generate a @c wxEVT_TEXT
+ event, use wxTextEntry::ChangeValue() if this is undesirable.
- /**
- Replaces the text between two positions with the given text, in the
- combobox text field.
+ @note For a combobox with @c wxCB_READONLY style the string must be in
+ the combobox choices list, otherwise the call to SetValue() is
+ ignored. This is case insensitive.
- @param from
- The first position.
- @param to
- The second position.
@param text
- The text to insert.
+ The text to set.
*/
- virtual void Replace(long from, long to, const wxString& text);
+ virtual void SetValue(const wxString& text);
/**
- Sets the insertion point in the combobox text field.
+ Shows the list box portion of the combo box.
- @param pos
- The new insertion point.
- */
- virtual void SetInsertionPoint(long pos);
+ Currently this method is implemented in wxMSW, wxGTK and wxOSX/Cocoa.
- /**
- Sets the insertion point at the end of the combobox text field.
+ Notice that calling this function will generate a
+ @c wxEVT_COMBOBOX_DROPDOWN event except under wxOSX where
+ generation of this event is not supported at all.
+
+ @since 2.9.1
*/
- virtual void SetInsertionPointEnd();
+ virtual void Popup();
/**
- Selects the text between the two positions, in the combobox text field.
+ Hides the list box portion of the combo box.
- @param from
- The first position.
- @param to
- The second position.
+ Currently this method is implemented in wxMSW, wxGTK and wxOSX/Cocoa.
- @beginWxPythonOnly
- This method is called SetMark() in wxPython, "SetSelection" is kept for
- wxControlWithItems::SetSelection().
- @endWxPythonOnly
+ Notice that calling this function will generate a
+ @c wxEVT_COMBOBOX_CLOSEUP event except under wxOSX where
+ generation of this event is not supported at all.
+
+ @since 2.9.1
*/
- virtual void SetSelection(long from, long to);
+ virtual void Dismiss();
- /**
- Sets the text for the combobox text field.
+ virtual int GetSelection() const;
+ virtual void GetSelection(long *from, long *to) const;
+ virtual void SetSelection(int n);
+ virtual int FindString(const wxString& s, bool bCase = false) const;
+ virtual wxString GetString(unsigned int n) const;
+ virtual wxString GetStringSelection() const;
- @note For a combobox with @c wxCB_READONLY style the string must be in
- the combobox choices list, otherwise the call to SetValue() is
- ignored.
+ /**
+ Changes the text of the specified combobox item.
- @param text
- The text to set.
- */
- virtual void SetValue(const wxString& text);
+ Notice that if the item is the currently selected one, i.e. if its text
+ is displayed in the text part of the combobox, then the text is also
+ replaced with the new @a text.
+ */
+ virtual void SetString(unsigned int n, const wxString& text);
- /**
- Undoes the last edit in the text field. Windows only.
- */
- virtual void Undo();
+ virtual unsigned int GetCount() const;
};
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