ReplaceEventHandlerBodyWithTemplate Xaml Mapping Action

Description

Replaces the content of an event handler with the evaluation of a C# code template.

Properties

Property	​Usage	​Description
​CodeTemplate	​Content property / Required	The C# code template

Example

The following mapping will add an if statement that wraps the method body with a condition regarding its first parameter.

<MapUnit xmlns='clr-namespace:Mobilize.Mappers.Extensibility.Core;assembly=Mobilize.ExtensibleMappers'
   xmlns:xmap='clr-namespace:Mobilize.XamlMappers;assembly=Mobilize.XamlMapper'
   xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' >
   <MapUnit.Elements>
      <xmap:XamlElementMapper ElementName="TextBlock" ElementNamespace="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
         <xmap:XamlElementMapper.Maps>
            <xmap:XamlMap Kind="Property" PropertyName="Tap">
               <xmap:XamlMap.Action>
                  <xmap:ActionSequence>
                     <xmap:ChangeEventHandlerEventArgsType
                        NewEventArgsTypeName="Windows.UI.Xaml.Input.TappedRoutedEventArgs" />
                     <xmap:ReplaceEventHandlerBodyWithTemplate >
                        <![CDATA[ if($parameter1Name != null) $body;  ]]>
                     </xmap:ReplaceEventHandlerBodyWithTemplate>
                     <xmap:RenameProperty NewPropertyLocalName="Tapped" />
                  </xmap:ActionSequence>
               </xmap:XamlMap.Action>
            </xmap:XamlMap>
         </xmap:XamlElementMapper.Maps>
      </xmap:XamlElementMapper>
   </MapUnit.Elements>
</MapUnit>

Say that we have the following code:

--XAML (Windows Phone Silverlight)--

<TextBlock x:Name="someText" Tap="TextBlock_Tap">Some text</TextBlock>

--C#(Windows Phone Silverlight)--

private void TextBlock_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
   MessageBox.Show("Hello!");
}

After running the conversion tool with this new mapping we get the following code:

--XAML (UWP)--

<TextBlock x:Name="someText" Tapped="TextBlock_Tap">Some text</TextBlock>

--C# (UWP)--

private async void TextBlock_Tap(object sender, Windows.UI.Xaml.Input.TappedRoutedEventArgs e)
{
   if ( e != null )
   {
      await (new Windows.UI.Popups.MessageDialog("Hello!")).ShowAsync();
   }
}

Predefined template variables

​Variable name	Description
$parameter0Name, $parameter1Name, ..., $parameterXName	​The names of the parameters of the current method. Parameter names are 0 based.
​$body	​The block with the body of the current method

Notes

TODO