plugins/dali-swig/SWIG/events/itemview-event.i

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 %define ITEMVIEW_EVENTHANDLER_TYPEMAP_EVENTARG(NameSpace, ClassName)
  19 %typemap(csimports) NameSpace::ClassName %{
  20 using System;
  21 using System.Runtime.InteropServices;
  22
  23 %}
  24 %enddef
  25
  26
  27 %define ITEMVIEW_EVENTHANDLER_TYPEMAP_HELPER(NameSpace, ClassName)
  28 %typemap(cscode) NameSpace::ClassName %{
  29
  30   public class LayoutActivatedEventArgs : EventArgs
  31   {
  32   }
  33
  34   [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  35   public delegate void LayoutActivatedEventHandler(object source, LayoutActivatedEventArgs e);
  36
  37   [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  38   private delegate void LayoutActivatedEventCallbackDelegate();
  39   private LayoutActivatedEventHandler _itemViewLayoutActivatedEventHandler;
  40   private LayoutActivatedEventCallbackDelegate _itemViewLayoutActivatedEventCallbackDelegate;
  41
  42   public event LayoutActivatedEventHandler LayoutActivated
  43   {
  44      add
  45      {
  46         lock(this)
  47         {
  48            // Restricted to only one listener
  49            if (_itemViewLayoutActivatedEventHandler == null)
  50            {
  51               _itemViewLayoutActivatedEventHandler += value;
  52
  53               _itemViewLayoutActivatedEventCallbackDelegate = new LayoutActivatedEventCallbackDelegate(OnLayoutActivated);
  54               this.LayoutActivatedSignal().Connect(_itemViewLayoutActivatedEventCallbackDelegate);
  55            }
  56         }
  57      }
  58
  59      remove
  60      {
  61         lock(this)
  62         {
  63            if (_itemViewLayoutActivatedEventHandler != null)
  64            {
  65               this.LayoutActivatedSignal().Disconnect(_itemViewLayoutActivatedEventCallbackDelegate);
  66            }
  67
  68            _itemViewLayoutActivatedEventHandler -= value;
  69         }
  70      }
  71   }
  72
  73   // Callback for ItemView LayoutActivatedSignal
  74   private void OnLayoutActivated()
  75   {
  76      LayoutActivatedEventArgs e = new LayoutActivatedEventArgs();
  77
  78      if (_itemViewLayoutActivatedEventHandler != null)
  79      {
  80         //here we send all data to user event handlers
  81         _itemViewLayoutActivatedEventHandler(this, e);
  82      }
  83   }
  84
  85 %}
  86 %enddef
  87
  88 %define DALI_ITEMVIEW_EVENTHANDLER_PARAM( NameSpace, ClassName)
  89   ITEMVIEW_EVENTHANDLER_TYPEMAP_EVENTARG( NameSpace, ClassName);
  90   ITEMVIEW_EVENTHANDLER_TYPEMAP_HELPER( NameSpace, ClassName);
  91 %enddef
  92
  93 namespace Dali
  94 {
  95   DALI_ITEMVIEW_EVENTHANDLER_PARAM( Dali::Toolkit, ItemView);
  96 }
  97