/// <summary>
/// Moves all templated controls of a given region provider
/// into their target regions.
/// </summary>
/// <param name="template">The template to be used.</param>
/// <param name="controls">Controls to move into the template.</param>
/// <param name="provider">Provides region assignements for the controls.</param>
/// <param name="page">The currently rendered page.</param>
protected static void HandleControls(IPortalTemplate template, RegionProvider provider, ControlCollection controls, Page page)
{
//force template control creation now by adding / removing the template
Control templateControl = (Control)template;
controls.Add(templateControl);
controls.Remove(templateControl);
//call initialization code of the template
template.BeforeTemplating(page);
//add defined controls to their target region
RegionPlaceHolder placeHolder;
foreach (RegionPropertySet propertySet in provider)
{
placeHolder = template[propertySet.TargetRegion];
if (placeHolder == null)
{
string msg = "Invalid region defined for control {0}. Template does not contain region '{1}'";
msg = String.Format(msg, propertySet.Control.ID, propertySet.TargetRegion);
throw new ArgumentException(msg);
}
//remove templated control from original location...
controls.Remove(propertySet.Control);
//...and put it into placeholder
placeHolder.Controls.Add(propertySet.Control);
}
//add remaining controls to default region, if any
if (provider.DefaultRegion != PortalRegion.None)
{
placeHolder = template[provider.DefaultRegion];
if (placeHolder == null)
{
string msg = "Invalid default region defined: Template does not contain region '{0}'";
msg = String.Format(msg, provider.DefaultRegion);
throw new ArgumentException(msg);
}
//move remaining controls into the template's controls
ControlUtil.MoveControls(controls, placeHolder.Controls);
}
//Everything is now in the template. Now move all the template's
//controls back into the page's control collection. This is necessary
//to keep relative links of the web form working
ControlUtil.MoveControls(templateControl.Controls, controls);
//call initialization code of the template
template.AfterTemplating(page);
}
/// <summary>
/// Merges a given page and its template. This overload
/// dynamically determines the <see cref="RegionProvider"/>
/// components of the page using reflection. If you do have
/// a reference to your provider during design time, it is
/// recommended to use the overload of this method.
/// </summary>
/// <param name="page">Page to be rendered.</param>
public static void PerformTemplating(Page page)
{
//get region provider, if any
RegionProvider provider = GetRegionProvider(page);
//do nothing if there is no region provider or no template was set
if (provider == null || provider.RegionTemplatePath.Equals(String.Empty))
{
return;
}
//call overload
PerformTemplating(page, provider);
}
/// <summary>
/// Performs templating for a given <see cref="RegionProvider"/>. Use
/// this overload if you have a reference to your provider for
/// performance reasons.
/// </summary>
/// <param name="page">The page to be rendered.</param>
/// <param name="provider">The region provider that contains
/// templating meta data.</param>
public static void PerformTemplating(Page page, RegionProvider provider)
{
HtmlForm form = FindForm(page);
if (form == null)
{
throw new ArgumentException("Could not find a HtmlForm control on that web form which is required by the template engine");
}
//load template control
try
{
IPortalTemplate template = (IPortalTemplate)page.LoadControl(provider.RegionTemplatePath);
//move controls into template
HandleControls(template, provider, form.Controls, page);
}
catch (InvalidCastException castException)
{
string msg = "Could not cast the template '{0}'. Make sure that the template derives from '{1}'";
msg = String.Format(msg, provider.RegionTemplatePath, "IPortalTemplate");
throw new ArgumentException(msg, castException);
}
}
/// <summary>
/// Performs templating for a given <see cref="RegionProvider"/>. Use
/// this overload if you have a reference to your provider for
/// performance reasons.
/// </summary>
/// <param name="page">The page to be rendered.</param>
/// <param name="provider">The region provider that contains
/// templating meta data.</param>
public static void PerformTemplating(Page page, RegionProvider provider)
{
HtmlForm form = FindForm(page);
if (form == null)
{
throw new ArgumentException("Could not find a HtmlForm control on that web form which is required by the template engine");
}
//load template control
try
{
IPortalTemplate template = (IPortalTemplate)page.LoadControl(provider.RegionTemplatePath);
//move controls into template
HandleControls(template, provider, form.Controls, page);
}
catch (InvalidCastException castException)
{
string msg = "Could not cast the template '{0}'. Make sure that the template derives from '{1}'";
msg = String.Format(msg, provider.RegionTemplatePath, "IPortalTemplate");
throw new ArgumentException(msg, castException);
}
}
/// <summary>
/// Moves all templated controls of a given region provider
/// into their target regions.
/// </summary>
/// <param name="template">The template to be used.</param>
/// <param name="controls">Controls to move into the template.</param>
/// <param name="provider">Provides region assignements for the controls.</param>
/// <param name="page">The currently rendered page.</param>
protected static void HandleControls(IPortalTemplate template, RegionProvider provider, ControlCollection controls, Page page)
{
//force template control creation now by adding / removing the template
Control templateControl = (Control)template;
controls.Add(templateControl);
controls.Remove(templateControl);
//call initialization code of the template
template.BeforeTemplating(page);
//add defined controls to their target region
RegionPlaceHolder placeHolder;
foreach (RegionPropertySet propertySet in provider)
{
placeHolder = template[propertySet.TargetRegion];
if (placeHolder == null)
{
string msg = "Invalid region defined for control {0}. Template does not contain region '{1}'";
msg = String.Format(msg, propertySet.Control.ID, propertySet.TargetRegion);
throw new ArgumentException(msg);
}
//remove templated control from original location...
controls.Remove(propertySet.Control);
//...and put it into placeholder
placeHolder.Controls.Add(propertySet.Control);
}
//add remaining controls to default region, if any
if (provider.DefaultRegion != PortalRegion.None)
{
placeHolder = template[provider.DefaultRegion];
if (placeHolder == null)
{
string msg = "Invalid default region defined: Template does not contain region '{0}'";
msg = String.Format(msg, provider.DefaultRegion);
throw new ArgumentException(msg);
}
//move remaining controls into the template's controls
ControlUtil.MoveControls(controls, placeHolder.Controls);
}
//Everything is now in the template. Now move all the template's
//controls back into the page's control collection. This is necessary
//to keep relative links of the web form working
ControlUtil.MoveControls(templateControl.Controls, controls);
//call initialization code of the template
template.AfterTemplating(page);
}
