private static void UpdateLinks(KmlFeature feature, KmlViewInformation viewInfo)
{
if (feature.visibility)
{
if (feature is KmlContainer)
{
KmlContainer container = (KmlContainer)feature;
if (container.children != null)
{
foreach (KmlFeature child in container.children)
{
UpdateLinks(child, viewInfo);
}
}
}
else
{
if (feature is KmlNetworkLink)
{
KmlNetworkLink netLink = (KmlNetworkLink)feature;
netLink.ConditionalUpdate(viewInfo);
if (netLink.LinkRoot != null)
{
UpdateRootLinks(netLink.LinkRoot, viewInfo);
}
}
}
}
}
public void UpdateNetworkLinks(KmlViewInformation viewInfo)
{
foreach (KmlRoot root in Roots)
{
UpdateRootLinks(root, viewInfo);
}
}
public static void UpdateRootLinks(KmlRoot root, KmlViewInformation viewInfo)
{
if (root.children != null)
{
foreach (KmlFeature child in root.children)
{
UpdateLinks(child, viewInfo);
}
}
}
private void UpdateLink(KmlViewInformation viewInfo)
{
try
{
if (Link != null)
{
string url;
if (Link.ViewRefreshMode == viewRefreshModeEnum.onStop)
//if (!String.IsNullOrEmpty(Link.viewFormat))
{
url = viewInfo.PrepLinkUrl(Link.Href + "?" + Link.ViewFormat);
}
else
{
url = Link.Href;
}
LinkRoot = new KmlRoot(url, Owner);
Dirty = true;
//if (open)
//{
// if (LinkRoot.children != null)
// {
// foreach (KmlFeature feature in LinkRoot.children)
// {
// feature.open = true;
// }
// }
//}
//if (visibility)
//{
// if (LinkRoot.children != null)
// {
// foreach (KmlFeature feature in LinkRoot.children)
// {
// feature.visibility = true;
// }
// }
//}
}
}
catch
{
}
}
private bool CheckRegionOverlap(KmlViewInformation viewInfo)
{
if (region != null)
{
if (!( region.west > viewInfo.bboxEast
|| region.east < viewInfo.bboxWest
|| region.north > viewInfo.bboxSouth
|| region.south < viewInfo.bboxNorth) )
{
return true;
}
}
return false;
}
internal void ConditionalUpdate(KmlViewInformation viewInfo)
{
if (Link != null)
{
if ((Link.RefreshMode == refreshModeEnum.onInterval ) && DateTime.Now.Subtract(lastUpdate).TotalSeconds > Link.RefreshInterval)
{
UpdateLink(viewInfo);
}
else if (pendingUpdate && DateTime.Now.Subtract(stopTime).TotalSeconds > Link.RefreshInterval)
{
UpdateLink(viewInfo);
}
else if (Link.ViewRefreshMode == viewRefreshModeEnum.onStop && viewInfo.viewJustStopped)
{
stopTime = DateTime.Now;
pendingUpdate = true;
}
else if (Link.ViewRefreshMode == viewRefreshModeEnum.onRequest && CheckRegionOverlap(viewInfo))
{
UpdateLink(viewInfo);
}
else if (LinkRoot == null)
{
UpdateLink(viewInfo);
}
// TOdo OnExpire
if (viewInfo != null &&viewInfo.viewMoving)
{
pendingUpdate = false;
}
}
}
