// Token: 0x06004420 RID: 17440 RVA: 0x00136834 File Offset: 0x00134A34
private void EnsureTemplate()
{
DataTemplate template = this.Template;
DataTemplate dataTemplate = null;
this._templateIsCurrent = false;
while (!this._templateIsCurrent)
{
this._templateIsCurrent = true;
dataTemplate = this.ChooseTemplate();
if (template != dataTemplate)
{
this.Template = null;
}
if (dataTemplate != ContentPresenter.UIElementContentTemplate)
{
base.DataContext = this.Content;
}
else
{
base.ClearValue(FrameworkElement.DataContextProperty);
}
}
this.Template = dataTemplate;
if (template == dataTemplate)
{
StyleHelper.DoTemplateInvalidations(this, template);
}
}
//------------------------------------------------------
//
// Private methods
//
//------------------------------------------------------
private void EnsureTemplate()
{
DataTemplate oldTemplate = Template;
DataTemplate newTemplate = null;
for (_templateIsCurrent = false; !_templateIsCurrent;)
{
// normally this loop will execute exactly once. The only exception
// is when setting the DataContext causes the ContentTemplate or
// ContentTemplateSelector to change, presumably because they are
// themselves data-bound (see bug 128119). In that case, we need
// to call ChooseTemplate again, to pick up the new template.
// We detect this case because _templateIsCurrent is reset to false
// in OnContentTemplate[Selector]Changed, causing a second iteration
// of the loop.
_templateIsCurrent = true;
newTemplate = ChooseTemplate();
// if the template is changing, it's important that the code that cleans
// up the old template runs while the CP's DataContext is still set to
// the old Content. The way to get this effect is:
// a. change the template to null
// b. change the data context
// c. change the template to the new value
if (oldTemplate != newTemplate)
{
Template = null;
}
if (newTemplate != UIElementContentTemplate)
{
// set data context to the content, so that the template can bind to
// properties of the content.
this.DataContext = Content;
}
else
{
// If we're using the content directly, clear the data context.
// The content expects to inherit.
this.ClearValue(DataContextProperty);
}
}
Template = newTemplate;
// if the template didn't change, we still need to force the content for the template to be regenerated;
// so call StyleHelper's DoTemplateInvalidations directly
if (oldTemplate == newTemplate)
{
StyleHelper.DoTemplateInvalidations(this, oldTemplate);
}
}
