document IsEmpty()

[wxWidgets.git] / src / gtk / textctrl.cpp

diff --git a/src/gtk/textctrl.cpp b/src/gtk/textctrl.cpp
index 703ceccd9c7b18bb529d1ba1ec6712a73dc436c7..0638f5c1fa9885d1451cfc716e2d6a0235d06ff0 100644 (file)
--- a/src/gtk/textctrl.cpp
+++ b/src/gtk/textctrl.cpp
@@ -69,10 +69,9 @@ static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
 
     if (attr.HasFont())
     {
-        char *font_string;
         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
-        font_string = pango_font_description_to_string(font_description);
-        g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
+        wxGtkString font_string(pango_font_description_to_string(font_description));
+        g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
                                          buf );
         if (!tag)
@@ -80,7 +79,6 @@ static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
                                               "font-desc", font_description,
                                               NULL );
         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
-        g_free (font_string);
 
         if (attr.GetFont().GetUnderlined())
         {
@@ -450,9 +448,7 @@ gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
     if ( win->MarkDirtyOnChange() )
         win->MarkDirty();
 
-    wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
-    event.SetEventObject( win );
-    win->GetEventHandler()->ProcessEvent( event );
+    win->SendTextUpdatedEvent();
 }
 }
 
@@ -546,9 +542,10 @@ END_EVENT_TABLE()
 void wxTextCtrl::Init()
 {
     m_dontMarkDirty =
-    m_ignoreNextUpdate =
     m_modified = false;
 
+    m_countUpdatesToIgnore = 0;
+
     SetUpdateFont(false);
 
     m_text = NULL;
@@ -787,13 +784,11 @@ wxString wxTextCtrl::GetValue() const
         gtk_text_buffer_get_start_iter( m_buffer, &start );
         GtkTextIter end;
         gtk_text_buffer_get_end_iter( m_buffer, &end );
-        gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
+        wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 
         const wxWxCharBuffer buf = wxGTK_CONV_BACK(text);
         if ( buf )
             tmp = buf;
-
-        g_free( text );
     }
     else
     {
@@ -824,7 +819,15 @@ wxFontEncoding wxTextCtrl::GetTextEncoding() const
     return enc;
 }
 
-void wxTextCtrl::SetValue( const wxString &value )
+bool wxTextCtrl::IsEmpty() const
+{
+    if ( IsMultiLine() )
+        return gtk_text_buffer_get_char_count(m_buffer) != 0;
+
+    return wxTextCtrlBase::IsEmpty();
+}
+
+void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 {
     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 
@@ -835,31 +838,31 @@ void wxTextCtrl::SetValue( const wxString &value )
     m_modified = false;
     DontMarkDirtyOnNextChange();
 
-    if ( IsMultiLine() )
+    const wxCharBuffer buffer(wxGTK_CONV_ENC(value, GetTextEncoding()));
+    if ( !buffer )
     {
-        const wxCharBuffer buffer(wxGTK_CONV_ENC(value, GetTextEncoding()));
-        if ( !buffer )
-        {
-            // see comment in WriteText() as to why we must warn the user about
-            // this
-            wxLogWarning(_("Failed to set text in the text control."));
-            return;
-        }
+        // see comment in WriteText() as to why we must warn the user about
+        // this
+        wxLogWarning(_("Failed to set text in the text control."));
+        return;
+    }
 
-        if (gtk_text_buffer_get_char_count(m_buffer) != 0)
-            IgnoreNextTextUpdate();
+    // if the control is not empty, two "changed" signals are emitted,
+    // otherwise only one and we need to ignore either both or one of them
+    int ignore = flags & SetValue_SendEvent ? 0 : 1;
+    if ( !IsEmpty() )
+        ignore++;
 
+    if ( ignore )
+        IgnoreNextTextUpdate(ignore);
+
+    if ( IsMultiLine() )
+    {
         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
     }
     else // single line
     {
-        // gtk_entry_set_text() emits two "changed" signals if the control is
-        // not empty because internally it calls gtk_editable_delete_text() and
-        // gtk_editable_insert_text() but we want to have only one event
-        if ( !GetValue().empty() )
-            IgnoreNextTextUpdate();
-
-        gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV(value) );
+        gtk_entry_set_text( GTK_ENTRY(m_text), buffer );
     }
 
     // GRG, Jun/2000: Changed this after a lot of discussion in
@@ -942,22 +945,22 @@ void wxTextCtrl::AppendText( const wxString &text )
 
 wxString wxTextCtrl::GetLineText( long lineNo ) const
 {
+    wxString result;
     if ( IsMultiLine() )
     {
         GtkTextIter line;
         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
         GtkTextIter end = line;
         gtk_text_iter_forward_to_line_end(&end);
-        gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
-        wxString result(wxGTK_CONV_BACK(text));
-        g_free(text);
-        return result;
+        wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
+        result = wxGTK_CONV_BACK(text);
     }
     else
     {
-        if (lineNo == 0) return GetValue();
-        return wxEmptyString;
+        if (lineNo == 0)
+            result = GetValue();
     }
+    return result;
 }
 
 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
@@ -1182,9 +1185,9 @@ void wxTextCtrl::DiscardEdits()
 
 bool wxTextCtrl::IgnoreTextUpdate()
 {
-    if ( m_ignoreNextUpdate )
+    if ( m_countUpdatesToIgnore > 0 )
     {
-        m_ignoreNextUpdate = false;
+        m_countUpdatesToIgnore--;
 
         return true;
     }