public static IList <ContainerMetadata> Load(Page page)
{
var metadataList = new List <ContainerMetadata>();
var appData = page.LoadApplicationData("ContainerMetadata");
if (appData != null)
{
// Metadata format: [ID]#[Template ID]=[Count],...
//
var metadataStr = Encoding.Default.GetString(appData.Data);
Log.Info("Read metadata: " + metadataStr);
string[] tokens = metadataStr.Split(new string[] { "#", "=", ";" }, StringSplitOptions.RemoveEmptyEntries);
int index = 0;
while (index < tokens.Length)
{
ContainerMetadata metadata = new ContainerMetadata();
metadata.Id = tokens[index++];
metadata.TemplateId = tokens[index++];
metadata.Count = Int32.Parse(tokens[index++]);
metadataList.Add(metadata);
}
}
return(metadataList);
}
/// <summary>
/// On Page Save.
/// </summary>
/// <param name="page"></param>
/// <param name="args"></param>
/// <param name="phase"></param>
public static void OnPageSave(Page page, SaveEventArgs args, EventPhases phase)
{
if (IsContainerPage(page))
{
try
{
IList <Container> containers = Container.GetContainers(page);
if (containers.Count > 0)
{
var foundComponentInWrongContainer = ProcessComponentPresentationsInWrongContainer(page, containers);
if (!foundComponentInWrongContainer)
{
var containerMetadata = ContainerMetadata.Load(page);
if (containerMetadata != null && containerMetadata.Count != containers.Count)
{
ProcessContainersOnWrongLocation(containers, page, containerMetadata);
}
}
ProcessComponentTemplates(page.ComponentPresentations);
ContainerMetadata.Save(page, containers);
}
}
catch (Exception e)
{
Log.Error("Error when processing container page: " + e);
}
}
}
/// <summary>
/// Process containers on wrong location in the page
/// </summary>
/// <param name="newContainers"></param>
/// <param name="page"></param>
/// <param name="oldContainers"></param>
static public void ProcessContainersOnWrongLocation(IList <Container> newContainers, Page page, IList <ContainerMetadata> containerMetadataList)
{
for (int i = 0; i < newContainers.Count; i++)
{
var container = newContainers[i];
if (container.ComponentPresentations.Count == 0 && i + 1 < newContainers.Count)
{
var nextContainer = newContainers[i + 1];
if (container.PageIndex == nextContainer.PageIndex - 1) // Found two containers lying beside eachother on the page
{
// Verify so the container items is not in the wrong container.
// If the container has been drag&dropped through XPM it will be attached to the container directly. So this needs to be corrected in that case.
//
ContainerMetadata containerMetadata = null;
foreach (var metadata in containerMetadataList)
{
if (container.Matches(metadata))
{
containerMetadata = metadata;
break;
}
}
if (containerMetadata != null && containerMetadata.Count > 0)
{
int newPageIndex = container.PageIndex + containerMetadata.Count + 1;
var containerCp = page.ComponentPresentations[nextContainer.PageIndex];
page.ComponentPresentations.RemoveAt(nextContainer.PageIndex);
page.ComponentPresentations.Insert(newPageIndex, containerCp);
return;
}
}
}
}
}
public bool Matches(ContainerMetadata containerMetadata)
{
return(containerMetadata.Id == this.containerComponent.Id &&
containerMetadata.TemplateId == this.containerTemplate.Id);
}