private void UpdateSelection()
{
LinkGroup selectedGroup = null;
Link selectedLink = null;
Uri sourceNoFragment = NavigationHelper.RemoveFragment(SelectedSource);
if (LinkGroups != null)
{
// find the current select group and link based on the selected source
var linkInfo = (from g in LinkGroups
from l in g.Links
where l.Source == sourceNoFragment
select new
{
Group = g,
Link = l
}).FirstOrDefault();
if (linkInfo != null)
{
selectedGroup = linkInfo.Group;
selectedLink = linkInfo.Link;
}
else
{
// could not find link and group based on selected source, fall back to selected link group
selectedGroup = SelectedLinkGroup;
// if selected group doesn't exist in available groups, select first group
if (!LinkGroups.Any(g => g == selectedGroup))
{
selectedGroup = LinkGroups.FirstOrDefault();
}
}
}
ReadOnlyLinkGroupCollection groups = null;
if (selectedGroup != null)
{
// ensure group itself maintains the selected link
selectedGroup.SelectedLink = selectedLink;
// find the collection this group belongs to
string groupKey = GetGroupKey(selectedGroup);
groupMap.TryGetValue(groupKey, out groups);
}
isSelecting = true;
// update selection
SetValue(VisibleLinkGroupsPropertyKey, groups);
SetCurrentValue(SelectedLinkGroupProperty, selectedGroup);
SetCurrentValue(SelectedLinkProperty, selectedLink);
isSelecting = false;
}
private void UpdateSelection()
{
LinkGroup selectedGroup = null;
Link selectedLink = null;
if (LinkGroups != null)
{
var linkInfo = (from g in LinkGroups from l in g.Links where l.Source == SelectedSource select new { Group = g, Link = l }).FirstOrDefault();
if (linkInfo != null)
{
selectedGroup = linkInfo.Group;
selectedLink = linkInfo.Link;
}
else
{
selectedGroup = SelectedLinkGroup;
if (LinkGroups.All(g => g != selectedGroup))
{
selectedGroup = LinkGroups.FirstOrDefault();
}
}
}
ReadOnlyLinkGroupCollection groups = null;
if (selectedGroup != null)
{
selectedGroup.SelectedLink = selectedLink;
var groupName = GetGroupName(selectedGroup);
groupMap.TryGetValue(groupName, out groups);
}
isSelecting = true;
SetValue(VisibleLinkGroupsPropertyKey, groups);
SetCurrentValue(SelectedLinkGroupProperty, selectedGroup);
SetCurrentValue(SelectedLinkProperty, selectedLink);
isSelecting = false;
}
private void UpdateSelection()
{
if (!_initialized)
{
return;
}
LinkGroup selectedGroup = null;
Link selectedLink = null;
if (LinkGroups != null)
{
// find the current select group and link based on the selected source
var linkInfo = (from g in LinkGroups
from l in g.Links
where l.Source == SelectedSource
select new {
Group = g,
Link = l
}).FirstOrDefault();
if (linkInfo != null)
{
selectedGroup = linkInfo.Group;
selectedLink = linkInfo.Link;
}
else
{
// could not find link and group based on selected source, fall back to selected link group
selectedGroup = SelectedLinkGroup;
// if selected group doesn’t exist in available groups, select first group
if (LinkGroups.All(g => g != selectedGroup))
{
selectedGroup = LinkGroups.FirstOrDefault();
}
}
}
ReadOnlyLinkGroupCollection groups = null;
if (selectedGroup != null)
{
// ensure group itself maintains the selected link
if (selectedLink == null)
{
/* very questionable place */
selectedLink = selectedGroup.SelectedLink;
}
else
{
selectedGroup.SelectedLink = selectedLink;
}
// find the collection this group belongs to
var groupKey = selectedGroup.GroupKey;
_groupMap.TryGetValue(groupKey, out groups);
}
_isSelecting = true;
// update selection
SetValue(VisibleLinkGroupsPropertyKey, groups);
SetCurrentValue(SelectedLinkGroupProperty, selectedGroup);
SetCurrentValue(SelectedLinkProperty, selectedLink);
_isSelecting = false;
}