+///////////////////////////////////////////////////////////////////////////////
+// Name: src/gtk/textentry.cpp
+// Purpose: wxTextEntry implementation for wxGTK
+// Author: Vadim Zeitlin
+// Created: 2007-09-24
+// RCS-ID: $Id$
+// Copyright: (c) 2007 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence: wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+#endif //WX_PRECOMP
+
+#include "wx/textentry.h"
+
+#include "wx/gtk/private.h"
+
+// ============================================================================
+// signal handlers implementation
+// ============================================================================
+
+extern "C"
+{
+
+// "insert_text" handler for GtkEntry
+static void
+wx_gtk_insert_text_callback(GtkEditable *editable,
+ const gchar *new_text,
+ gint new_text_length,
+ gint *position,
+ wxTextEntry *text)
+{
+ // we should only be called if we have a max len limit at all
+ GtkEntry *entry = GTK_ENTRY (editable);
+
+ wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
+
+ // check that we don't overflow the max length limit
+ //
+ // FIXME: this doesn't work when we paste a string which is going to be
+ // truncated
+ if ( entry->text_length == entry->text_max_length )
+ {
+ // we don't need to run the base class version at all
+ g_signal_stop_emission_by_name (editable, "insert_text");
+
+ text->SendMaxLenEvent();
+ }
+}
+
+} // extern "C"
+
+// ============================================================================
+// wxTextEntry implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// text operations
+// ----------------------------------------------------------------------------
+
+void wxTextEntry::WriteText(const wxString& value)
+{
+ GtkEditable * const edit = GetEditable();
+
+ // remove the selection if there is one and suppress the text change event
+ // generated by this: we only want to generate one event for this change,
+ // not two
+ {
+ EventsSuppressor noevents(this);
+ gtk_editable_delete_selection(edit);
+ }
+
+ // insert new text at the cursor position
+ gint len = gtk_editable_get_position(edit);
+ gtk_editable_insert_text
+ (
+ edit,
+ wxGTK_CONV_FONT(value, GetEditableWindow()->GetFont()),
+ -1, // text: length: compute it using strlen()
+ &len // will be updated to position after the text end
+ );
+
+ // and move cursor to the end of new text
+ gtk_editable_set_position(edit, len);
+}
+
+wxString wxTextEntry::GetValue() const
+{
+ const wxGtkString value(gtk_editable_get_chars(GetEditable(), 0, -1));
+
+ return wxGTK_CONV_BACK_FONT(value, GetEditableWindow()->GetFont());
+}
+
+void wxTextEntry::Remove(long from, long to)
+{
+ gtk_editable_delete_text(GetEditable(), from, to);
+}
+
+// ----------------------------------------------------------------------------
+// clipboard operations
+// ----------------------------------------------------------------------------
+
+void wxTextEntry::Copy()
+{
+ gtk_editable_copy_clipboard(GetEditable());
+}
+
+void wxTextEntry::Cut()
+{
+ gtk_editable_cut_clipboard(GetEditable());
+}
+
+void wxTextEntry::Paste()
+{
+ gtk_editable_paste_clipboard(GetEditable());
+}
+
+// ----------------------------------------------------------------------------
+// undo/redo
+// ----------------------------------------------------------------------------
+
+void wxTextEntry::Undo()
+{
+ // TODO: not implemented
+}
+
+void wxTextEntry::Redo()
+{
+ // TODO: not implemented
+}
+
+bool wxTextEntry::CanUndo() const
+{
+ return false;
+}
+
+bool wxTextEntry::CanRedo() const
+{
+ return false;
+}
+
+// ----------------------------------------------------------------------------
+// insertion point
+// ----------------------------------------------------------------------------
+
+void wxTextEntry::SetInsertionPoint(long pos)
+{
+ gtk_editable_set_position(GetEditable(), pos);
+}
+
+long wxTextEntry::GetInsertionPoint() const
+{
+ return gtk_editable_get_position(GetEditable());
+}
+
+long wxTextEntry::GetLastPosition() const
+{
+ // this can't be implemented for arbitrary GtkEditable so only do it for
+ // GtkEntries
+ GtkEntry * const entry = GTK_ENTRY(GetEditable());
+
+ return entry ? entry->text_length : - 1;
+}
+
+// ----------------------------------------------------------------------------
+// selection
+// ----------------------------------------------------------------------------
+
+void wxTextEntry::SetSelection(long from, long to)
+{
+ gtk_editable_select_region(GetEditable(), from, to);
+}
+
+void wxTextEntry::GetSelection(long *from, long *to) const
+{
+ gint start, end;
+ if ( gtk_editable_get_selection_bounds(GetEditable(), &start, &end) )
+ {
+ // the output must always be in order, although in GTK+ it isn't
+ if ( start > end )
+ {
+ gint tmp = start;
+ start = end;
+ end = tmp;
+ }
+ }
+ else // no selection
+ {
+ // for compatibility with MSW return the empty selection at cursor
+ start =
+ end = GetInsertionPoint();
+ }
+
+ if ( from )
+ *from = start;
+
+ if ( to )
+ *to = end;
+}
+
+// ----------------------------------------------------------------------------
+// editable status
+// ----------------------------------------------------------------------------
+
+bool wxTextEntry::IsEditable() const
+{
+ return gtk_editable_get_editable(GetEditable());
+}
+
+void wxTextEntry::SetEditable(bool editable)
+{
+ gtk_editable_set_editable(GetEditable(), editable);
+}
+
+// ----------------------------------------------------------------------------
+// max text length
+// ----------------------------------------------------------------------------
+
+void wxTextEntry::SetMaxLength(unsigned long len)
+{
+ GtkEntry * const entry = GTK_ENTRY(GetEditable());
+ if ( !entry )
+ return;
+
+ gtk_entry_set_max_length(entry, len);
+
+ // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if we had
+ // tried to enter more text than allowed by max text length and the text
+ // wasn't really changed
+ //
+ // to detect this and generate TEXT_MAXLEN event instead of TEXT_CHANGED
+ // one in this case we also catch "insert_text" signal
+ //
+ // when max len is set to 0 we disconnect our handler as it means that we
+ // shouldn't check anything any more
+ if ( len )
+ {
+ g_signal_connect
+ (
+ entry,
+ "insert_text",
+ G_CALLBACK(wx_gtk_insert_text_callback),
+ this
+ );
+ }
+ else // no max length
+ {
+ g_signal_handlers_disconnect_by_func
+ (
+ entry,
+ (gpointer)wx_gtk_insert_text_callback,
+ this
+ );
+ }
+}
+
+void wxTextEntry::SendMaxLenEvent()
+{
+ // remember that the next changed signal is to be ignored to avoid
+ // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
+ //IgnoreNextTextUpdate();
+
+ wxWindow * const win = const_cast<wxWindow *>(GetEditableWindow());
+ wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
+ event.SetEventObject(win);
+ event.SetString(GetValue());
+ win->GetEventHandler()->ProcessEvent(event);
+}
+
projects / wxWidgets.git / commitdiff
