src/contentcontrol.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * contentcontrol.cpp:
   4  *
   5  * Contact:
   6  *   Moonlight List (moonlight-list@lists.ximian.com)
   7  *
   8  * Copyright 2007-2009 Novell, Inc. (http://www.novell.com)
   9  *
  10  * See the LICENSE file included with the distribution for details.
  11  *
  12  */
  13
  14 #include <config.h>
  15
  16 #include "application.h"
  17 #include "contentcontrol.h"
  18
  19
  20 ContentControl::ContentControl ()
  21 {
  22         ManagedTypeInfo *type_info = new ManagedTypeInfo ("System.Windows", "System.Windows.Controls.ContentControl");
  23
  24         SetContentSetsParent (true);
  25         SetObjectType (Type::CONTENTCONTROL);
  26         SetDefaultStyleKey (type_info);
  27 }
  28
  29 ContentControl::~ContentControl ()
  30 {
  31 }
  32
  33 bool
  34 ContentControl::ApplyTemplate ()
  35 {
  36         // If the Template has been applied (or already applied) we will get a
  37         // return code of TemplateStatusApplied or TemplateStatusAlreadyApplied.
  38         // Otherwise we get TemplateStatusNotApplied and we should apply the
  39         // default root
  40         TemplateStatus status = Control::ApplyTemplate (GetTemplate ());
  41         if (status != TemplateStatusNotApplied) {
  42                 // Return 'true' if the template was actually applied. If it was
  43                 // already there, we return false.
  44                 return status == TemplateStatusApplied;
  45         }
  46         Value *content = GetValue (ContentControl::ContentProperty);
  47         if (!content || content->GetIsNull ())
  48                 return false;
  49
  50         status = ApplyTemplateRoot (Application::GetCurrent ()->GetDefaultTemplateRoot (this));
  51         return status == TemplateStatusApplied;
  52 }
  53
  54 void
  55 ContentControl::OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error)
  56 {
  57         bool clearTemplate = false;
  58         if (args->GetProperty ()->GetOwnerType () != Type::CONTENTCONTROL) {
  59                 Control::OnPropertyChanged (args, error);
  60                 return;
  61         }
  62
  63         if (args->GetId () == ContentControl::ContentProperty) {
  64                 if (args->GetOldValue() && args->GetOldValue()->Is(Type::FRAMEWORKELEMENT)) {
  65                         clearTemplate = true;
  66                         if (GetContentSetsParent ()) {
  67                                 args->GetOldValue()->AsFrameworkElement()->SetLogicalParent (NULL, error);
  68                                 if (error->number)
  69                                         return;
  70                         }
  71                 }
  72                 if (args->GetNewValue() && args->GetNewValue()->Is(Type::FRAMEWORKELEMENT)) {
  73                         clearTemplate = true;
  74                         if (GetContentSetsParent ()) {
  75                                 args->GetNewValue()->AsFrameworkElement()->SetLogicalParent (this, error);
  76                                 if (error->number)
  77                                         return;
  78                         }
  79                 }
  80                 if (!GetContentSetsParent () && args->GetNewValue () && args->GetNewValue()->Is (Type::DEPENDENCY_OBJECT) && !args->GetNewValue ()->Is (Type::FRAMEWORKELEMENT)) {
  81                         MoonError::FillIn (error, MoonError::ARGUMENT, "");
  82                         return;
  83                 }
  84
  85                 if (clearTemplate)
  86                         ClearTemplate ();
  87
  88                 Emit (ContentControl::ContentChangedEvent, new ContentChangedEventArgs (args->GetOldValue(), args->GetNewValue()));
  89         }
  90
  91         NotifyListenersOfPropertyChange (args, error);
  92 }
  93
  94 ContentChangedEventArgs::ContentChangedEventArgs (Value *old_content, Value *new_content)
  95 {
  96         SetObjectType (Type::CONTENTCHANGEDEVENTARGS);
  97
  98         this->old_content = old_content;
  99         this->new_content = new_content;
 100 }
 101
 102 ContentChangedEventArgs::~ContentChangedEventArgs ()
 103 {
 104 }
 105
 106 Value*
 107 ContentChangedEventArgs::GetOldContent ()
 108 {
 109         return old_content;
 110 }
 111
 112 Value*
 113 ContentChangedEventArgs::GetNewContent ()
 114 {
 115         return new_content;
 116 }