src/popup.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * popup.cpp
   4  *
   5  * Copyright 2009 Novell, Inc. (http://www.novell.com)
   6  *
   7  * See the LICENSE file included with the distribution for details.
   8  *
   9  */
  10
  11 #include "popup.h"
  12 #include "runtime.h"
  13
  14 Popup::Popup ()
  15 {
  16         SetObjectType (Type::POPUP);
  17         shutting_down = false;
  18         visible = false;
  19         GetDeployment ()->AddHandler (Deployment::ShuttingDownEvent, ShuttingDownCallback, this);
  20 }
  21
  22 void
  23 Popup::Dispose ()
  24 {
  25         if (!shutting_down && GetIsOpen ())
  26                 Hide (GetChild ());
  27         GetDeployment ()->RemoveHandler (Deployment::ShuttingDownEvent, ShuttingDownCallback, this);
  28         FrameworkElement::Dispose ();
  29 }
  30
  31 void
  32 Popup::HitTest (cairo_t *cr, Point p, List *uielement_list)
  33 {
  34         if (visible)
  35                 FrameworkElement::HitTest (cr, p, uielement_list);
  36 }
  37
  38 void
  39 Popup::OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error)
  40 {
  41         if (args->GetProperty ()->GetOwnerType() != Type::POPUP) {
  42                 FrameworkElement::OnPropertyChanged (args, error);
  43                 return;
  44         }
  45
  46         if (args->GetId () == Popup::IsOpenProperty) {
  47                 // we intentionally don't track whether we've added a tick
  48                 // call (to make sure we only add it once) for this event
  49                 // because multiple IsOpen changes cause multiple async events
  50                 // in SL.
  51                 if (args->GetNewValue () && args->GetNewValue ()->AsBool ()) {
  52                         Show (GetChild ());
  53
  54                         EmitAsync (Popup::OpenedEvent);
  55                 }
  56                 else {
  57                         Hide (GetChild ());
  58
  59                         EmitAsync (Popup::ClosedEvent);
  60                 }
  61         } else if (args->GetId () == Popup::ChildProperty) {
  62                 if (args->GetOldValue () && !args->GetOldValue ()->GetIsNull ()) {
  63                         FrameworkElement *el = args->GetOldValue ()->AsFrameworkElement ();
  64                         if (GetIsOpen ())
  65                                 Hide (el);
  66
  67                         el->SetLogicalParent (NULL, error);
  68                         if (error->number)
  69                                 return;
  70                 }
  71                 if (args->GetNewValue () && !args->GetNewValue ()->GetIsNull ()) {
  72                         FrameworkElement *el = args->GetNewValue ()->AsFrameworkElement ();
  73                         args->GetNewValue ()->AsFrameworkElement ()->SetLogicalParent (this, error);
  74                         if (error->number)
  75                                 return;
  76
  77                         if (GetIsOpen ())
  78                                 Show (el);
  79                 }
  80         } else if (args->GetId () == Popup::HorizontalOffsetProperty
  81                    || args->GetId () == Popup::VerticalOffsetProperty) {
  82                 UIElement * child = GetChild ();
  83                 if (child)
  84                         child->UpdateTransform ();
  85         }
  86         NotifyListenersOfPropertyChange (args, error);
  87 }
  88
  89 void
  90 Popup::ShuttingDownHandler (Deployment *sender, EventArgs *args)
  91 {
  92         shutting_down = true;
  93 }
  94
  95 void
  96 Popup::Hide (UIElement *child)
  97 {
  98         if (!visible || !child)
  99                 return;
 100
 101         visible = false;
 102         Deployment::GetCurrent ()->GetSurface ()->DetachLayer (child);
 103 }
 104
 105 void
 106 Popup::SetSurface (Surface *s)
 107 {
 108         FrameworkElement::SetSurface (s);
 109 }
 110
 111 void
 112 Popup::Show (UIElement *child)
 113 {
 114         if (visible || !child)
 115                 return;
 116
 117         visible = true;
 118         Deployment::GetCurrent ()->GetSurface ()->AttachLayer (child);
 119 }