internal static List <ListItem> GetAvailableValues(FilteredLookupField f, HttpContext ctx)
{
List <ListItem> _v = null;
SPListItemCollection items = null;
Guid fId = new Guid(f.LookupField);
SPSite s = SPControl.GetContextSite(ctx);
SPWeb lookupWeb = s.OpenWeb(f.LookupWebId);
SPList lookupList = lookupWeb.Lists[new Guid(f.LookupList)];
try { if (f.QueryFilter != null)
{
items = lookupList.GetItems(f.QueryFilter);
}
}
catch { }
if (items == null)
{
items = lookupList.Items;
}
if ((items != null && items.Count > 0))
{
_v = items
.Cast <SPListItem>()
.Where(e => e[fId] != null)
.Select(e => new ListItem((
e.Fields[fId].GetFieldValueAsText(e[fId])), e.ID.ToString()))
.ToList <ListItem>();
}
return(_v);
}
public void InitializeWithField(SPField field)
{
EnsureChildControls();
FilteredLookupField _f = null;
try { _f = field as FilteredLookupField; }
catch { }
if (_f != null)
{
// this bit only happens when field is not null
if (!IsPostBack)
{
cbxAllowMultiValue.Checked = _f.AllowMultipleValues;
txtQueryFilter.Text = (!string.IsNullOrEmpty(_f.QueryFilterAsString)) ?
SPHttpUtility.HtmlDecode(_f.QueryFilterAsString) : string.Empty;
cbxRecursiveFilter.Checked = _f.IsFilterRecursive;
TargetWebId = _f.LookupWebId.ToString();
TargetListId = _f.LookupList;
TargetColumnId = _f.LookupField;
TargetListViewId = _f.ListViewFilter;
}
}
// this bit must always happen, even when field is null
if (!IsPostBack)
{
SetTargetWeb();
lblTargetWeb.Text = listTargetWeb.SelectedItem.Text;
lblTargetList.Text = listTargetList.SelectedItem.Text;
SetControlVisibility();
}
}
protected override void CreateChildControls() {
// 19 items is limit for switching from
// standard dropdown to SharePoint fancy dropdown
if (base.Field != null && base.ControlMode != SPControlMode.Display) {
if (!this.ChildControlsCreated) {
this.Controls.Clear();
this.Controls.Add(new LiteralControl("<span dir=\"none\">"));
FilteredLookupField field = base.Field as FilteredLookupField;
if (_availableItems != null && _availableItems.Count > 19 && IsExplorerOnWin()) {
CreateCustomSelect();
}
else { CreateStandardSelect(); }
this.Controls.Add(new LiteralControl("<br /></span>"));
}
}
}
public void OnSaveChange(SPField field, bool isNewField)
{
FilteredLookupField _f = null;
try { _f = field as FilteredLookupField; }
catch { }
if (_f != null)
{
string s = txtQueryFilter.Text;
bool rec = cbxRecursiveFilter.Checked;
string view = (listTargetListView.SelectedIndex > -1) ?
listTargetListView.SelectedItem.Value : string.Empty;
string col = listTargetColumn.SelectedItem.Value;
string list = listTargetList.SelectedItem.Value;
bool multi = cbxAllowMultiValue.Checked;
if (isNewField) // can only change list and web if new field
{
SPSite _site = SPControl.GetContextSite(this.Context);
SPWeb _web = _site.OpenWeb(new Guid(listTargetWeb.SelectedItem.Value));
_f.LookupWebId = _web.ID;
_f.LookupList = list;
}
if (rdFilterOption.SelectedItem.Value == "Query")
{
_f.QueryFilterAsString = (!string.IsNullOrEmpty(s)) ? SPHttpUtility.HtmlEncode(s) : "";
_f.ListViewFilter = "";
}
else if (rdFilterOption.SelectedItem.Value == "ListView")
{
_f.ListViewFilter = (!string.IsNullOrEmpty(view)) ? view : "";
_f.QueryFilterAsString = "";
}
_f.LookupField = col;
_f.IsFilterRecursive = rec;
_f.UnlimitedLengthInDocumentLibrary = cbxUnlimitedLengthInDocLib.Checked;
_f.CountRelated = IsCountRelated(_f.LookupField, _f.LookupList);
_f.AllowMultipleValues = (_f.CountRelated) ? false : multi;
}
}
protected override void CreateChildControls()
{
if (this.Field != null && this.ControlMode != SPControlMode.Display)
{
if (!this.ChildControlsCreated)
{
FilteredLookupField field = this.Field as FilteredLookupField;
base.CreateChildControls();
MultiLookupPicker = (GroupedItemPicker)TemplateContainer.FindControl("MultiLookupPicker");
BuildAvailableItems(ref MultiLookupPicker);
SelectCandidate = (SPHtmlSelect)TemplateContainer.FindControl("SelectCandidate");
SelectResult = (SPHtmlSelect)TemplateContainer.FindControl("SelectResult");
AddButton = (HtmlButton)TemplateContainer.FindControl("AddButton");
RemoveButton = (HtmlButton)TemplateContainer.FindControl("RemoveButton");
}
}
}
