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Applied patch from Ales Katona for bug #9885 which fixes gtk2 Combobox OnSelect

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git-svn-id: trunk@12395 -
This commit is contained in:
andrew 2007-10-09 16:35:38 +00:00
parent 6e14738195
commit e628172571
2 changed files with 53 additions and 6 deletions
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1
lcl/interfaces/gtk/gtkproc.pp
View File

@ -62,6 +62,7 @@ uses
const
GtkListItemGtkListTag = 'GtkList';
GtkListItemLCLListTag = 'LCLList';
GtkComboLCLItemIndexTag = 'LCLItemIndex';
{$if Declared(TOldStyleCustomImageList)}

54
lcl/interfaces/gtk2/gtk2wsstdctrls.pp
View File

@ -795,6 +795,7 @@ var
Text: String;
Box: PGtkWidget;
ItemList: TGtkListStoreStringList;
LCLIndex: PLongint;
begin
Box:=PGtkWidget(ACustomComboBox.Handle);
ComboWidget := AWidgetInfo^.CoreWidget;
@ -805,6 +806,13 @@ begin
// keep items
ItemList := ACustomComboBox.Items as TGtkListStoreStringList;
LCLIndex := gtk_object_get_data(GTK_OBJECT(ComboWidget), GtkComboLCLItemIndexTag);
if not Assigned(LCLIndex) then begin
//debugln('Gtk2WSCustomComboBox ReCreateCombo: LCLIndex unassigned!');
LCLIndex := New(PLongint);
LCLIndex^ := -1;
end;
// this should work but may not in all circumstances
Index := -1;
if AWithEntry = False then begin // the current widget HAS an entry
@ -813,7 +821,8 @@ begin
end;
if Index = -1 then Index := GetItemIndex(ACustomComboBox);
gtk_object_set_data(PGtkObject(ComboWidget),GtkListItemLCLListTag,nil);
gtk_object_set_data(PGtkObject(ComboWidget), GtkListItemLCLListTag,nil);
gtk_object_set_data(PGtkObject(ComboWidget), GtkComboLCLItemIndexTag, LCLIndex);
gtk_widget_destroy(ComboWidget);
// create the new widget with the old model
@ -892,16 +901,33 @@ begin
end;
procedure GtkChangedCB(AWidget: PGtkWidget; WidgetInfo: PWidgetInfo); cdecl;
var
LCLIndex: PLongint;
Index, GtkIndex: Integer;
begin
if WidgetInfo^.UserData <> nil then Exit;
LCLSendChangedMsg(TControl(WidgetInfo^.LCLObject));
Index := -1;
LCLIndex := gtk_object_get_data(GTK_OBJECT(WidgetInfo^.CoreWidget), GtkComboLCLItemIndexTag);
if Assigned(LCLIndex) then
Index := LCLIndex^
else
debugln('Gtk2WSCustomComboBox GtkChangedCB: LCLIndex unassigned!');
GtkIndex := gtk_combo_box_get_active(GTK_COMBO_BOX(WidgetInfo^.CoreWidget));
if Index <> GtkIndex then begin
LCLSendSelectionChangedMsg(TControl(WidgetInfo^.LCLObject));
if Assigned(LCLIndex) then
LCLIndex^ := GtkIndex;
end;
end;
procedure GtkSelectedCB(AWidget: PGtkWidget; WidgetInfo: PWidgetInfo); cdecl;
{procedure GtkSelectedCB(AWidget: PGtkWidget; WidgetInfo: PWidgetInfo); cdecl;
begin
if WidgetInfo^.UserData <> nil then Exit;
LCLSendSelectionChangedMsg(TControl(WidgetInfo^.LCLObject));
end;
end;}
class procedure TGtk2WSCustomComboBox.SetCallbacks(
const AWinControl: TWinControl; const AWidget: PGtkWidget;
@ -985,9 +1011,9 @@ begin
AMenu := GTK_OBJECT(APrivate^.popup_window);
if Assigned(AMenu) then begin
// g_signal_connect(AMenu, 'selection-done', TGCallback(@GtkSelectedCB), AWidgetInfo);
g_signal_connect(AMenu, 'show', G_CALLBACK(@GtkPopupShowCB), AWidgetInfo);
g_signal_connect_after(AMenu, 'hide', G_CALLBACK(@GtkPopupHideCB), AWidgetInfo);
g_signal_connect(AMenu, 'selection-done', G_CALLBACK(@GtkSelectedCB), AWidgetInfo);
end;
//g_signal_connect(ComboWidget, 'popup-shown', TGCallback(@GtkPopupShowCB), AWidgetInfo);
@ -1131,6 +1157,7 @@ class procedure TGtk2WSCustomComboBox.SetItemIndex(
var
P: PGtkWidget;
WidgetInfo: PWidgetInfo;
LCLIndex: PLongint;
begin
WidgetInfo := GetWidgetInfo(Pointer(ACustomComboBox.Handle));
p := WidgetInfo^.CoreWidget;
@ -1139,6 +1166,13 @@ begin
// so we use WidgetInfo^.Userdata as a flag to not signal the OnChange Event
WidgetInfo^.UserData := Pointer(1);
gtk_combo_box_set_active(PGtkComboBox(p), NewIndex);
LCLIndex := gtk_object_get_data(GTK_OBJECT(p), GtkComboLCLItemIndexTag);
if not Assigned(LCLIndex) then
LCLIndex := New(PLongint);
LCLIndex^ := NewIndex;
gtk_object_set_data(GTK_OBJECT(p), GtkComboLCLItemIndexTag, LCLIndex); // set LCLIndex for OnChange -> OnSelect
WidgetInfo^.UserData := Pointer(nil);
end;
@ -1283,6 +1317,7 @@ var
WidgetInfo: PWidgetInfo;
ACustomComboBox: TCustomComboBox;
ItemList: TGtkListStoreStringList;
LCLIndex: PLongint;
begin
ACustomComboBox:=TCustomComboBox(AWinControl);
@ -1319,6 +1354,10 @@ begin
WidgetInfo^.CoreWidget := ComboWidget;
WidgetInfo^.ClientWidget := Box;
LCLIndex := New(PLongint);
LCLIndex^ := -1;
gtk_object_set_data(GTK_OBJECT(ComboWidget), GtkComboLCLItemIndexTag, LCLIndex);
//gtk_widget_add_events(Box, GDK_ALL_EVENTS_MASK);
SetCallbacks(AWinControl, Box, WidgetInfo);
@ -1339,10 +1378,17 @@ class procedure TGtk2WSCustomComboBox.DestroyHandle(
var
Handle: HWND;
ComboWidget: PGtkWidget;
LCLIndex: PLongint;
begin
Handle := AWinControl.Handle;
ComboWidget := GetWidgetInfo(Pointer(Handle), True)^.CoreWidget;
gtk_object_set_data(PGtkObject(ComboWidget),GtkListItemLCLListTag,nil);
LCLIndex := gtk_object_get_data(PGtkObject(ComboWidget), GtkComboLCLItemIndexTag);
if Assigned(LCLIndex) then begin
gtk_object_set_data(PGtkObject(ComboWidget), GtkComboLCLItemIndexTag, nil);
Dispose(LCLIndex);
end else
debugln('Gtk2WSCustomComboBox DestroyHandle: LCLIndex unassigned!');
//DebugLn(['TGtk2WSCustomComboBox.DestroyHandle ',dbgsName(AWinControl),' ClassParent=',ClassParent.ClassName]);