fc8d3f6fba
This avoids problems with SetValue() overrides not doing the intended thing (for example wxComboBox). See #16654
343 lines
11 KiB
C++
343 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/textentry.h
|
|
// Purpose: declares wxTextEntry interface defining a simple text entry
|
|
// Author: Vadim Zeitlin
|
|
// Created: 2007-09-24
|
|
// Copyright: (c) 2007 Vadim Zeitlin <vadim@wxwindows.org>
|
|
// Licence: wxWindows licence
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_TEXTENTRY_H_
|
|
#define _WX_TEXTENTRY_H_
|
|
|
|
// wxTextPos is the position in the text (currently it's hardly used anywhere
|
|
// and should probably be replaced with int anyhow)
|
|
typedef long wxTextPos;
|
|
|
|
class WXDLLIMPEXP_FWD_BASE wxArrayString;
|
|
class WXDLLIMPEXP_FWD_CORE wxTextCompleter;
|
|
class WXDLLIMPEXP_FWD_CORE wxTextEntryHintData;
|
|
class WXDLLIMPEXP_FWD_CORE wxWindow;
|
|
|
|
#include "wx/filefn.h" // for wxFILE and wxDIR only
|
|
#include "wx/gdicmn.h" // for wxPoint
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxTextEntryBase
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_CORE wxTextEntryBase
|
|
{
|
|
public:
|
|
wxTextEntryBase() { m_eventsBlock = 0; m_hintData = NULL; }
|
|
virtual ~wxTextEntryBase();
|
|
|
|
|
|
// accessing the value
|
|
// -------------------
|
|
|
|
// SetValue() generates a text change event, ChangeValue() doesn't
|
|
virtual void SetValue(const wxString& value)
|
|
{ DoSetValue(value, SetValue_SendEvent); }
|
|
virtual void ChangeValue(const wxString& value);
|
|
|
|
// writing text inserts it at the current position replacing any current
|
|
// selection, appending always inserts it at the end and doesn't remove any
|
|
// existing text (but it will reset the selection if there is any)
|
|
virtual void WriteText(const wxString& text) = 0;
|
|
virtual void AppendText(const wxString& text);
|
|
|
|
virtual wxString GetValue() const;
|
|
virtual wxString GetRange(long from, long to) const;
|
|
bool IsEmpty() const { return GetLastPosition() <= 0; }
|
|
|
|
|
|
// editing operations
|
|
// ------------------
|
|
|
|
virtual void Replace(long from, long to, const wxString& value);
|
|
virtual void Remove(long from, long to) = 0;
|
|
virtual void Clear() { Remove(0, -1); }
|
|
void RemoveSelection();
|
|
|
|
|
|
// clipboard operations
|
|
// --------------------
|
|
|
|
virtual void Copy() = 0;
|
|
virtual void Cut() = 0;
|
|
virtual void Paste() = 0;
|
|
|
|
virtual bool CanCopy() const;
|
|
virtual bool CanCut() const;
|
|
virtual bool CanPaste() const;
|
|
|
|
// undo/redo
|
|
// ---------
|
|
|
|
virtual void Undo() = 0;
|
|
virtual void Redo() = 0;
|
|
|
|
virtual bool CanUndo() const = 0;
|
|
virtual bool CanRedo() const = 0;
|
|
|
|
|
|
// insertion point
|
|
// ---------------
|
|
|
|
// note that moving insertion point removes any current selection
|
|
virtual void SetInsertionPoint(long pos) = 0;
|
|
virtual void SetInsertionPointEnd() { SetInsertionPoint(-1); }
|
|
virtual long GetInsertionPoint() const = 0;
|
|
virtual long GetLastPosition() const = 0;
|
|
|
|
|
|
// selection
|
|
// ---------
|
|
|
|
virtual void SetSelection(long from, long to) = 0;
|
|
virtual void SelectAll() { SetSelection(-1, -1); }
|
|
virtual void SelectNone()
|
|
{ const long pos = GetInsertionPoint(); SetSelection(pos, pos); }
|
|
virtual void GetSelection(long *from, long *to) const = 0;
|
|
bool HasSelection() const;
|
|
virtual wxString GetStringSelection() const;
|
|
|
|
|
|
// auto-completion
|
|
// ---------------
|
|
|
|
// these functions allow to auto-complete the text already entered into the
|
|
// control using either the given fixed list of strings, the paths from the
|
|
// file system or an arbitrary user-defined completer
|
|
//
|
|
// they all return true if completion was enabled or false on error (most
|
|
// commonly meaning that this functionality is not available under the
|
|
// current platform)
|
|
|
|
bool AutoComplete(const wxArrayString& choices)
|
|
{ return DoAutoCompleteStrings(choices); }
|
|
|
|
bool AutoCompleteFileNames()
|
|
{ return DoAutoCompleteFileNames(wxFILE); }
|
|
|
|
bool AutoCompleteDirectories()
|
|
{ return DoAutoCompleteFileNames(wxDIR); }
|
|
|
|
// notice that we take ownership of the pointer and will delete it
|
|
//
|
|
// if the pointer is NULL auto-completion is disabled
|
|
bool AutoComplete(wxTextCompleter *completer)
|
|
{ return DoAutoCompleteCustom(completer); }
|
|
|
|
|
|
// status
|
|
// ------
|
|
|
|
virtual bool IsEditable() const = 0;
|
|
virtual void SetEditable(bool editable) = 0;
|
|
|
|
|
|
// input restrictions
|
|
// ------------------
|
|
|
|
// set the max number of characters which may be entered in a single line
|
|
// text control
|
|
virtual void SetMaxLength(unsigned long WXUNUSED(len)) { }
|
|
|
|
// convert any lower-case characters to upper-case on the fly in this entry
|
|
virtual void ForceUpper();
|
|
|
|
|
|
// hints
|
|
// -----
|
|
|
|
// hint is the (usually greyed out) text shown in the control as long as
|
|
// it's empty and doesn't have focus, it is typically used in controls used
|
|
// for searching to let the user know what is supposed to be entered there
|
|
|
|
virtual bool SetHint(const wxString& hint);
|
|
virtual wxString GetHint() const;
|
|
|
|
|
|
// margins
|
|
// -------
|
|
|
|
// margins are the empty space between borders of control and the text
|
|
// itself. When setting margin, use value -1 to indicate that specific
|
|
// margin should not be changed.
|
|
|
|
bool SetMargins(const wxPoint& pt)
|
|
{ return DoSetMargins(pt); }
|
|
bool SetMargins(wxCoord left, wxCoord top = -1)
|
|
{ return DoSetMargins(wxPoint(left, top)); }
|
|
wxPoint GetMargins() const
|
|
{ return DoGetMargins(); }
|
|
|
|
|
|
// implementation only
|
|
// -------------------
|
|
|
|
// generate the wxEVT_TEXT event for GetEditableWindow(),
|
|
// like SetValue() does and return true if the event was processed
|
|
//
|
|
// NB: this is public for wxRichTextCtrl use only right now, do not call it
|
|
static bool SendTextUpdatedEvent(wxWindow *win);
|
|
|
|
// generate the wxEVT_TEXT event for this window
|
|
bool SendTextUpdatedEvent()
|
|
{
|
|
return SendTextUpdatedEvent(GetEditableWindow());
|
|
}
|
|
|
|
|
|
// generate the wxEVT_TEXT event for this window if the
|
|
// events are not currently disabled
|
|
void SendTextUpdatedEventIfAllowed()
|
|
{
|
|
if ( EventsAllowed() )
|
|
SendTextUpdatedEvent();
|
|
}
|
|
|
|
// this function is provided solely for the purpose of forwarding text
|
|
// change notifications state from one control to another, e.g. it can be
|
|
// used by a wxComboBox which derives from wxTextEntry if it delegates all
|
|
// of its methods to another wxTextCtrl
|
|
void ForwardEnableTextChangedEvents(bool enable)
|
|
{
|
|
// it's important to call the functions which update m_eventsBlock here
|
|
// and not just our own EnableTextChangedEvents() because our state
|
|
// (i.e. the result of EventsAllowed()) must change as well
|
|
if ( enable )
|
|
ResumeTextChangedEvents();
|
|
else
|
|
SuppressTextChangedEvents();
|
|
}
|
|
|
|
// change the entry value to be in upper case only, if needed (i.e. if it's
|
|
// not already the case)
|
|
void ConvertToUpperCase();
|
|
|
|
protected:
|
|
// flags for DoSetValue(): common part of SetValue() and ChangeValue() and
|
|
// also used to implement WriteText() in wxMSW
|
|
enum
|
|
{
|
|
SetValue_NoEvent = 0,
|
|
SetValue_SendEvent = 1,
|
|
SetValue_SelectionOnly = 2
|
|
};
|
|
|
|
virtual void DoSetValue(const wxString& value, int flags);
|
|
virtual wxString DoGetValue() const = 0;
|
|
|
|
// override this to return the associated window, it will be used for event
|
|
// generation and also by generic hints implementation
|
|
virtual wxWindow *GetEditableWindow() = 0;
|
|
|
|
// margins functions
|
|
virtual bool DoSetMargins(const wxPoint& pt);
|
|
virtual wxPoint DoGetMargins() const;
|
|
|
|
// the derived classes should override these virtual methods to implement
|
|
// auto-completion, they do the same thing as their public counterparts but
|
|
// have different names to allow overriding just one of them without hiding
|
|
// the other one(s)
|
|
virtual bool DoAutoCompleteStrings(const wxArrayString& WXUNUSED(choices))
|
|
{ return false; }
|
|
virtual bool DoAutoCompleteFileNames(int WXUNUSED(flags)) // wxFILE | wxDIR
|
|
{ return false; }
|
|
virtual bool DoAutoCompleteCustom(wxTextCompleter *completer);
|
|
|
|
|
|
// class which should be used to temporarily disable text change events
|
|
//
|
|
// if suppress argument in ctor is false, nothing is done
|
|
class EventsSuppressor
|
|
{
|
|
public:
|
|
EventsSuppressor(wxTextEntryBase *text, bool suppress = true)
|
|
: m_text(text),
|
|
m_suppress(suppress)
|
|
{
|
|
if ( m_suppress )
|
|
m_text->SuppressTextChangedEvents();
|
|
}
|
|
|
|
~EventsSuppressor()
|
|
{
|
|
if ( m_suppress )
|
|
m_text->ResumeTextChangedEvents();
|
|
}
|
|
|
|
private:
|
|
wxTextEntryBase *m_text;
|
|
bool m_suppress;
|
|
};
|
|
|
|
friend class EventsSuppressor;
|
|
|
|
private:
|
|
// suppress or resume the text changed events generation: don't use these
|
|
// functions directly, use EventsSuppressor class above instead
|
|
void SuppressTextChangedEvents()
|
|
{
|
|
if ( !m_eventsBlock++ )
|
|
EnableTextChangedEvents(false);
|
|
}
|
|
|
|
void ResumeTextChangedEvents()
|
|
{
|
|
if ( !--m_eventsBlock )
|
|
EnableTextChangedEvents(true);
|
|
}
|
|
|
|
|
|
// this must be overridden in the derived classes if our implementation of
|
|
// SetValue() or Replace() is used to disable (and enable back) generation
|
|
// of the text changed events
|
|
//
|
|
// initially the generation of the events is enabled
|
|
virtual void EnableTextChangedEvents(bool WXUNUSED(enable)) { }
|
|
|
|
// return true if the events are currently not suppressed
|
|
bool EventsAllowed() const { return m_eventsBlock == 0; }
|
|
|
|
|
|
// if this counter is non-null, events are blocked
|
|
unsigned m_eventsBlock;
|
|
|
|
// hint-related stuff, only allocated if/when SetHint() is used
|
|
wxTextEntryHintData *m_hintData;
|
|
|
|
// It needs to call our Do{Get,Set}Value() to work with the real control
|
|
// contents.
|
|
friend class wxTextEntryHintData;
|
|
};
|
|
|
|
#ifdef __WXUNIVERSAL__
|
|
// TODO: we need to use wxTextEntryDelegate here, but for now just prevent
|
|
// the GTK/MSW classes from being used in wxUniv build
|
|
class WXDLLIMPEXP_CORE wxTextEntry : public wxTextEntryBase
|
|
{
|
|
};
|
|
#elif defined(__WXGTK20__)
|
|
#include "wx/gtk/textentry.h"
|
|
#elif defined(__WXMAC__)
|
|
#include "wx/osx/textentry.h"
|
|
#elif defined(__WXMSW__)
|
|
#include "wx/msw/textentry.h"
|
|
#elif defined(__WXMOTIF__)
|
|
#include "wx/motif/textentry.h"
|
|
#elif defined(__WXQT__)
|
|
#include "wx/qt/textentry.h"
|
|
#else
|
|
// no platform-specific implementation of wxTextEntry yet
|
|
class WXDLLIMPEXP_CORE wxTextEntry : public wxTextEntryBase
|
|
{
|
|
};
|
|
#endif
|
|
|
|
#endif // _WX_TEXTENTRY_H_
|
|
|