// private functions
// ----------------------------------------------------------------------------
+// helper: inserts the new text in the value of the text ctrl and returns the
+// result in place
+static void MergeChangesIntoString(wxString& value,
+ XmTextVerifyCallbackStruct *textStruct);
+
// callbacks
static void wxTextWindowChangedProc(Widget w, XtPointer clientData, XtPointer ptr);
static void wxTextWindowModifyProc(Widget w, XtPointer clientData, XmTextVerifyCallbackStruct *cbs);
BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
EVT_CHAR(wxTextCtrl::OnChar)
+
+ EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
+ EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
+ EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
+ EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
+ EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
+
+ EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
+ EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
+ EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
+ EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
+ EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
+
END_EVENT_TABLE()
#endif
// Text item
wxTextCtrl::wxTextCtrl()
-#ifndef NO_TEXT_WINDOW_STREAM
- : streambuf()
-#endif
{
m_tempCallbackStruct = (void*) NULL;
m_modified = FALSE;
NULL
);
+ XtVaSetValues ((Widget) m_mainWidget,
+ XmNeditable, ((style & wxTE_READONLY) ? False : True),
+ NULL);
+
// TODO: Is this relevant? What does it do?
int noCols = 2;
if (!value.IsNull() && (value.Length() > (unsigned int) noCols))
}
if ( !!value )
+ {
+#if 0
+ // don't do this because it is just linking the text to a source
+ // string which is unsafe. MB
+ //
XmTextSetString ((Widget) m_mainWidget, (char*)value.c_str());
-
+#else
+ // do this instead... MB
+ //
+ XtVaSetValues( (Widget) m_mainWidget,
+ XmNvalue, (char *)value.c_str(),
+ NULL);
+#endif
+ }
+
// install callbacks
XtAddCallback((Widget) m_mainWidget, XmNvalueChangedCallback, (XtCallbackProc)wxTextWindowChangedProc, (XtPointer)this);
XtAddCallback((Widget) m_mainWidget, XmNlosingFocusCallback, (XtCallbackProc)wxTextWindowLoseFocusProc, (XtPointer)this);
// font
- m_windowFont = parent->GetFont();
+ m_font = parent->GetFont();
ChangeFont(FALSE);
SetCanAddEventHandler(TRUE);
wxString wxTextCtrl::GetValue() const
{
+ wxString str; // result
+
if (m_windowStyle & wxTE_PASSWORD)
- return m_value;
+ {
+ // the value is stored always in m_value because it can't be retrieved
+ // from the text control
+ str = m_value;
+ }
else
{
+ // just get the string from Motif
char *s = XmTextGetString ((Widget) m_mainWidget);
- if (s)
+ if ( s )
{
- wxString str(s);
+ str = s;
XtFree (s);
- return str;
}
- else
+ //else: return empty string
+
+ if ( m_tempCallbackStruct )
{
- return wxEmptyString;
+ // the string in the control isn't yet updated, can't use it as is
+ MergeChangesIntoString(str, (XmTextVerifyCallbackStruct *)
+ m_tempCallbackStruct);
}
}
+
+ return str;
}
void wxTextCtrl::SetValue(const wxString& value)
{
m_inSetValue = TRUE;
+#if 0
+ // don't do this because it is just linking the text to a source
+ // string which is unsafe. MB
+ //
XmTextSetString ((Widget) m_mainWidget, (char*)value.c_str());
+#else
+ // do this instead... MB
+ //
+ XtVaSetValues( (Widget) m_mainWidget,
+ XmNvalue, (char *)value.c_str(),
+ NULL);
+#endif
m_inSetValue = FALSE;
}
XmTextPaste((Widget) m_mainWidget);
}
+bool wxTextCtrl::CanCopy() const
+{
+ // Can copy if there's a selection
+ long from, to;
+ GetSelection(& from, & to);
+ return (from != to) ;
+}
+
+bool wxTextCtrl::CanCut() const
+{
+ // Can cut if there's a selection
+ long from, to;
+ GetSelection(& from, & to);
+ return (from != to) ;
+}
+
+bool wxTextCtrl::CanPaste() const
+{
+ return IsEditable() ;
+}
+
+// Undo/redo
+void wxTextCtrl::Undo()
+{
+ // Not possible in Motif
+}
+
+void wxTextCtrl::Redo()
+{
+ // Not possible in Motif
+}
+
+bool wxTextCtrl::CanUndo() const
+{
+ // No Undo in Motif
+ return FALSE;
+}
+
+bool wxTextCtrl::CanRedo() const
+{
+ // No Redo in Motif
+ return FALSE;
+}
+
+// If the return values from and to are the same, there is no
+// selection.
+void wxTextCtrl::GetSelection(long* from, long* to) const
+{
+ XmTextPosition left, right;
+
+ XmTextGetSelectionPosition((Widget) m_mainWidget, & left, & right);
+
+ *from = (long) left;
+ *to = (long) right;
+}
+
+bool wxTextCtrl::IsEditable() const
+{
+ return (XmTextGetEditable((Widget) m_mainWidget) != 0);
+}
+
void wxTextCtrl::SetEditable(bool editable)
{
XmTextSetEditable((Widget) m_mainWidget, (Boolean) editable);
// Makes 'unmodified'
void wxTextCtrl::DiscardEdits()
{
- XmTextSetString ((Widget) m_mainWidget, "");
m_modified = FALSE;
}
return r+x;
}
-void wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
+bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
{
Position xx, yy;
XmTextPosToXY((Widget) m_mainWidget, pos, &xx, &yy);
- *x = xx; *y = yy;
+ if ( x )
+ *x = xx;
+ if ( y )
+ *y = yy;
+
+ return TRUE;
}
void wxTextCtrl::ShowPosition(long pos)
}
}
-// The streambuf code was partly taken from chapter 3 by Jerry Schwarz of
-// AT&T's "C++ Lanuage System Release 3.0 Library Manual" - Stein Somers
-
-//=========================================================================
-// Called then the buffer is full (gcc 2.6.3)
-// or when "endl" is output (Borland 4.5)
-//=========================================================================
-// Class declaration using multiple inheritance doesn't work properly for
-// Borland. See note in wb_text.h.
-#ifndef NO_TEXT_WINDOW_STREAM
-int wxTextCtrl::overflow(int c)
-{
- // Make sure there is a holding area
- if ( allocate()==EOF )
- {
- wxError("Streambuf allocation failed","Internal error");
- return EOF;
- }
-
- // Verify that there are no characters in get area
- if ( gptr() && gptr() < egptr() )
- {
- wxError("wxTextCtrl::overflow: Who's trespassing my get area?","Internal error");
- return EOF;
- }
-
- // Reset get area
- setg(0,0,0);
-
- // Make sure there is a put area
- if ( ! pptr() )
- {
- /* This doesn't seem to be fatal so comment out error message */
- // wxError("Put area not opened","Internal error");
- setp( base(), base() );
- }
-
- // Determine how many characters have been inserted but no consumed
- int plen = pptr() - pbase();
-
- // Now Jerry relies on the fact that the buffer is at least 2 chars
- // long, but the holding area "may be as small as 1" ???
- // And we need an additional \0, so let's keep this inefficient but
- // safe copy.
-
- // If c!=EOF, it is a character that must also be comsumed
- int xtra = c==EOF? 0 : 1;
-
- // Write temporary C-string to wxTextWindow
- {
- char *txt = new char[plen+xtra+1];
- memcpy(txt, pbase(), plen);
- txt[plen] = (char)c; // append c
- txt[plen+xtra] = '\0'; // append '\0' or overwrite c
- // If the put area already contained \0, output will be truncated there
- WriteText(txt);
- delete[] txt;
- }
-
- // Reset put area
- setp(pbase(), epptr());
-
-#if defined(__WATCOMC__)
- return __NOT_EOF;
-#elif defined(zapeof) // HP-UX (all cfront based?)
- return zapeof(c);
-#else
- return c!=EOF ? c : 0; // this should make everybody happy
-#endif
-}
-
-//=========================================================================
-// called then "endl" is output (gcc) or then explicit sync is done (Borland)
-//=========================================================================
-int wxTextCtrl::sync()
-{
- // Verify that there are no characters in get area
- if ( gptr() && gptr() < egptr() )
- {
- wxError("Who's trespassing my get area?","Internal error");
- return EOF;
- }
-
- if ( pptr() && pptr() > pbase() ) return overflow(EOF);
-
- return 0;
- /* OLD CODE
- int len = pptr() - pbase();
- char *txt = new char[len+1];
- strncpy(txt, pbase(), len);
- txt[len] = '\0';
- (*this) << txt;
- setp(pbase(), epptr());
- delete[] txt;
- return 0;
- */
-}
-
-//=========================================================================
-// Should not be called by a "ostream". Used by a "istream"
-//=========================================================================
-int wxTextCtrl::underflow()
-{
- return EOF;
-}
-#endif
-
-wxTextCtrl& wxTextCtrl::operator<<(const wxString& s)
-{
- AppendText(s);
- return *this;
-}
-
-wxTextCtrl& wxTextCtrl::operator<<(float f)
-{
- wxString str;
- str.Printf("%.2f", f);
- AppendText(str);
- return *this;
-}
-
-wxTextCtrl& wxTextCtrl::operator<<(double d)
-{
- wxString str;
- str.Printf("%.2f", d);
- AppendText(str);
- return *this;
-}
-
-wxTextCtrl& wxTextCtrl::operator<<(int i)
-{
- wxString str;
- str.Printf("%d", i);
- AppendText(str);
- return *this;
-}
-
-wxTextCtrl& wxTextCtrl::operator<<(long i)
-{
- wxString str;
- str.Printf("%ld", i);
- AppendText(str);
- return *this;
-}
-
-wxTextCtrl& wxTextCtrl::operator<<(const char c)
-{
- char buf[2];
-
- buf[0] = c;
- buf[1] = 0;
- AppendText(buf);
- return *this;
-}
-
void wxTextCtrl::OnChar(wxKeyEvent& event)
{
// Indicates that we should generate a normal command, because
}
}
-static void wxTextWindowChangedProc (Widget w, XtPointer clientData, XtPointer ptr)
+void wxTextCtrl::DoSendEvents(void *wxcbs, long keycode)
+{
+ // we're in process of updating the text control
+ m_tempCallbackStruct = wxcbs;
+
+ XmTextVerifyCallbackStruct *cbs = (XmTextVerifyCallbackStruct *)wxcbs;
+
+ wxKeyEvent event (wxEVT_CHAR);
+ event.SetId(GetId());
+ event.m_keyCode = keycode;
+ event.SetEventObject(this);
+
+ // Only if wxTextCtrl::OnChar is called will this be set to True (and
+ // the character passed through)
+ cbs->doit = False;
+
+ GetEventHandler()->ProcessEvent(event);
+
+ if ( !InSetValue() && m_processedDefault )
+ {
+ // Can generate a command
+ wxCommandEvent commandEvent(wxEVT_COMMAND_TEXT_UPDATED, GetId());
+ commandEvent.SetEventObject(this);
+ ProcessCommand(commandEvent);
+ }
+
+ // do it after the (user) event handlers processed the events because
+ // otherwise GetValue() would return incorrect (not yet updated value)
+ m_tempCallbackStruct = NULL;
+}
+
+// ----------------------------------------------------------------------------
+// helpers and Motif callbacks
+// ----------------------------------------------------------------------------
+
+static void MergeChangesIntoString(wxString& value,
+ XmTextVerifyCallbackStruct *cbs)
+{
+ /* _sm_
+ * At least on my system (SunOS 4.1.3 + Motif 1.2), you need to think of
+ * every event as a replace event. cbs->text->ptr gives the replacement
+ * text, cbs->startPos gives the index of the first char affected by the
+ * replace, and cbs->endPos gives the index one more than the last char
+ * affected by the replace (startPos == endPos implies an empty range).
+ * Hence, a deletion is represented by replacing all input text with a
+ * blank string ("", *not* NULL!). A simple insertion that does not
+ * overwrite any text has startPos == endPos.
+ */
+
+ if ( !value )
+ {
+ // easy case: the ol value was empty
+ value = cbs->text->ptr;
+ }
+ else
+ {
+ // merge the changes into the value
+ const char * const passwd = value;
+ int len = value.length();
+
+ len += strlen(cbs->text->ptr) + 1; // + new text (if any) + NUL
+ len -= cbs->endPos - cbs->startPos; // - text from affected region.
+
+ char * newS = new char [len];
+ char * dest = newS,
+ * insert = cbs->text->ptr;
+
+ // Copy (old) text from passwd, up to the start posn of the change.
+ int i;
+ const char * p = passwd;
+ for (i = 0; i < cbs->startPos; ++i)
+ *dest++ = *p++;
+
+ // Copy the text to be inserted).
+ while (*insert)
+ *dest++ = *insert++;
+
+ // Finally, copy into newS any remaining text from passwd[endPos] on.
+ for (p = passwd + cbs->endPos; *p; )
+ *dest++ = *p++;
+ *dest = 0;
+
+ value = newS;
+
+ delete[] newS;
+ }
+}
+
+static void
+wxTextWindowChangedProc (Widget w, XtPointer clientData, XtPointer ptr)
{
if (!wxGetWindowFromTable(w))
// Widget has been deleted!
wxTextCtrl *tw = (wxTextCtrl *) clientData;
tw->m_processedDefault = FALSE;
- // First, do some stuff if it's a password control.
- // (What does this do exactly?)
+ // First, do some stuff if it's a password control: in this case, we need
+ // to store the string inside the class because GetValue() can't retrieve
+ // it from the text ctrl. We do *not* do it in other circumstances because
+ // it would double the amount of memory needed.
- if (tw->GetWindowStyleFlag() & wxTE_PASSWORD)
+ if ( tw->GetWindowStyleFlag() & wxTE_PASSWORD )
{
- /* _sm_
- * At least on my system (SunOS 4.1.3 + Motif 1.2), you need to think of
- * every event as a replace event. cbs->text->ptr gives the replacement
- * text, cbs->startPos gives the index of the first char affected by the
- * replace, and cbs->endPos gives the index one more than the last char
- * affected by the replace (startPos == endPos implies an empty range).
- * Hence, a deletion is represented by replacing all input text with a
- * blank string ("", *not* NULL!). A simple insertion that does not
- * overwrite any text has startPos == endPos.
- */
-
- if (tw->m_value.IsNull())
- {
- tw->m_value = cbs->text->ptr;
- }
- else
- {
- char * passwd = (char*) (const char*) tw->m_value; // Set up a more convenient alias.
-
- int len = passwd ? strlen(passwd) : 0; // Enough room for old text
- len += strlen(cbs->text->ptr) + 1; // + new text (if any) + NUL
- len -= cbs->endPos - cbs->startPos; // - text from affected region.
+ MergeChangesIntoString(tw->m_value, cbs);
- char * newS = new char [len];
- char * p = passwd, * dest = newS, * insert = cbs->text->ptr;
-
- // Copy (old) text from passwd, up to the start posn of the change.
- int i;
- for (i = 0; i < cbs->startPos; ++i)
- *dest++ = *p++;
-
- // Copy the text to be inserted).
- while (*insert)
- *dest++ = *insert++;
-
- // Finally, copy into newS any remaining text from passwd[endPos] on.
- for (p = passwd + cbs->endPos; *p; )
- *dest++ = *p++;
- *dest = 0;
-
- tw->m_value = newS;
-
- delete[] newS;
- }
-
- if (cbs->text->length>0)
+ if ( cbs->text->length > 0 )
{
int i;
for (i = 0; i < cbs->text->length; ++i)
cbs->text->ptr[i] = '*';
- cbs->text->ptr[i] = 0;
+ cbs->text->ptr[i] = '\0';
}
}
- // If we're already within an OnChar, return: probably
- // a programmatic insertion.
+ // If we're already within an OnChar, return: probably a programmatic
+ // insertion.
if (tw->m_tempCallbackStruct)
return;
// Check for a backspace
if (cbs->startPos == (cbs->currInsert - 1))
{
- tw->m_tempCallbackStruct = (void*) cbs;
-
- wxKeyEvent event (wxEVT_CHAR);
- event.SetId(tw->GetId());
- event.m_keyCode = WXK_DELETE;
- event.SetEventObject(tw);
-
- // Only if wxTextCtrl::OnChar is called
- // will this be set to True (and the character
- // passed through)
- cbs->doit = False;
-
- tw->GetEventHandler()->ProcessEvent(event);
-
- tw->m_tempCallbackStruct = NULL;
-
- if (tw->InSetValue())
- return;
-
- if (tw->m_processedDefault)
- {
- // Can generate a command
- wxCommandEvent commandEvent(wxEVT_COMMAND_TEXT_UPDATED, tw->GetId());
- commandEvent.SetEventObject(tw);
- tw->ProcessCommand(commandEvent);
- }
+ tw->DoSendEvents((void *)cbs, WXK_DELETE);
return;
}
- // Pasting operation: let it through without
- // calling OnChar
+ // Pasting operation: let it through without calling OnChar
if (cbs->text->length > 1)
return;
if (cbs->text->ptr == NULL)
return;
- tw->m_tempCallbackStruct = (void*) cbs;
-
- wxKeyEvent event (wxEVT_CHAR);
- event.SetId(tw->GetId());
- event.SetEventObject(tw);
- event.m_keyCode = (cbs->text->ptr[0] == 10 ? 13 : cbs->text->ptr[0]);
-
- // Only if wxTextCtrl::OnChar is called
- // will this be set to True (and the character
- // passed through)
- cbs->doit = False;
-
- tw->GetEventHandler()->ProcessEvent(event);
-
- tw->m_tempCallbackStruct = NULL;
-
- if (tw->InSetValue())
- return;
-
- if (tw->m_processedDefault)
- {
- // Can generate a command
- wxCommandEvent commandEvent(wxEVT_COMMAND_TEXT_UPDATED, tw->GetId());
- commandEvent.SetEventObject(tw);
- tw->ProcessCommand(commandEvent);
- }
+ // normal key press
+ char ch = cbs->text->ptr[0];
+ tw->DoSendEvents((void *)cbs, ch == '\n' ? '\r' : ch);
}
-// ----------------------------------------------------------------------------
-// callbacks
-// ----------------------------------------------------------------------------
-
static void
wxTextWindowGainFocusProc (Widget w, XtPointer clientData, XmAnyCallbackStruct *cbs)
{
event.SetEventObject(tw);
tw->ProcessCommand(event);
}
+
+void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
+{
+ Cut();
+}
+
+void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
+{
+ Copy();
+}
+
+void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
+{
+ Paste();
+}
+
+void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
+{
+ Undo();
+}
+
+void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
+{
+ Redo();
+}
+
+void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
+{
+ event.Enable( CanCut() );
+}
+
+void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
+{
+ event.Enable( CanCopy() );
+}
+
+void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
+{
+ event.Enable( CanPaste() );
+}
+
+void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
+{
+ event.Enable( CanUndo() );
+}
+
+void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
+{
+ event.Enable( CanRedo() );
+}
projects / wxWidgets.git / blobdiff