public override void Init(System.Html.Element element, Func <object> valueAccessor, Func <System.Collections.Dictionary> allBindingsAccessor, object viewModel, object context)
{
XrmLookupEditorButton footerButton = (XrmLookupEditorButton)allBindingsAccessor()["footerButton"];
bool showFooter = (bool)allBindingsAccessor()["showFooter"];
jQueryObject container = jQuery.FromElement(element);
jQueryObject inputField = container.Find(".sparkle-input-lookup-part");
jQueryObject selectButton = container.Find(".sparkle-input-lookup-button-part");
EntityReference _value = new EntityReference(null, null, null);
AutoCompleteOptions options = new AutoCompleteOptions();
options.MinLength = 100000; // Don't enable type down - use search button (or return)
options.Delay = 0;
options.Position = new Dictionary <string, object>("collision", "fit");
bool justSelected = false;
int totalRecordsReturned = 0;
Action <AutoCompleteItem, bool> setValue = delegate(AutoCompleteItem item, bool setFocus)
{
if (_value == null)
{
_value = new EntityReference(null, null, null);
}
string value = item.Label;
inputField.Value(value);
_value.Id = ((Guid)item.Value);
_value.Name = item.Label;
_value.LogicalName = (string)item.Data;
justSelected = true;
TrySetObservable(valueAccessor, inputField, _value, setFocus);
};
// Set the value when selected
options.Select = delegate(jQueryEvent e, AutoCompleteSelectEvent uiEvent)
{
// Note we assume that the binding has added an array of string items
AutoCompleteItem item = (AutoCompleteItem)uiEvent.Item;
string data = ((string)item.Data);
if (data == "footerlink" || data == null)
{
footerButton.OnClick(item);
e.PreventDefault();
e.StopImmediatePropagation();
Script.Literal("return false;");
}
else
{
setValue(item, true);
Script.Literal("return false;");
}
};
options.Open = delegate(jQueryEvent e, jQueryObject o)
{
if (showFooter && totalRecordsReturned > 0)
{
WidgetObject menu = (WidgetObject)Script.Literal("{0}.autocomplete({1})", inputField, "widget");
XrmLookupEditor.AddFooter(menu, totalRecordsReturned);
}
};
options.Close = delegate(jQueryEvent e, jQueryObject o)
{
WidgetObject menu = (WidgetObject)Script.Literal("{0}.autocomplete({1})", inputField, "widget");
jQueryObject footer = menu.Next();
if (footer.Length > 0 || footer.HasClass("sparkle-menu-footer"))
{
footer.Hide();
}
};
// Get the query command
Action <string, Action <EntityCollection> > queryCommand = (Action <string, Action <EntityCollection> >)((object)allBindingsAccessor()["queryCommand"]);
string nameAttribute = ((string)allBindingsAccessor()["nameAttribute"]);
string idAttribute = ((string)allBindingsAccessor()["idAttribute"]);
string typeCodeAttribute = ((string)allBindingsAccessor()["typeCodeAttribute"]);
string[] columnAttributes = null;
// If there multiple names, add them to the columnAttributes
string[] columns = nameAttribute.Split(",");
if (columns.Length > 1)
{
columnAttributes = columns;
nameAttribute = columnAttributes[0];
}
// wire up source to CRM search
Action <AutoCompleteRequest, Action <AutoCompleteItem[]> > queryDelegate = delegate(AutoCompleteRequest request, Action <AutoCompleteItem[]> response)
{
Action <EntityCollection> queryCallBack = delegate(EntityCollection fetchResult)
{
int recordsFound = fetchResult.Entities.Count;
bool noRecordsFound = recordsFound == 0;
AutoCompleteItem[] results = new AutoCompleteItem[recordsFound + (footerButton != null ? 1 : 0) + (noRecordsFound ? 1 : 0)];
for (int i = 0; i < recordsFound; i++)
{
results[i] = new AutoCompleteItem();
results[i].Label = (string)fetchResult.Entities[i].GetAttributeValue(nameAttribute);
results[i].Value = fetchResult.Entities[i].GetAttributeValue(idAttribute);
results[i].Data = fetchResult.Entities[i].LogicalName;
GetExtraColumns(columnAttributes, fetchResult, results, i);
string typeCodeName = fetchResult.Entities[i].LogicalName;
// Get the type code from the name to find the icon
if (!string.IsNullOrEmpty(typeCodeAttribute))
{
typeCodeName = fetchResult.Entities[i].GetAttributeValue(typeCodeAttribute).ToString();
}
results[i].Image = MetadataCache.GetSmallIconUrl(typeCodeName);
}
if (fetchResult.TotalRecordCount > fetchResult.Entities.Count)
{
totalRecordsReturned = fetchResult.TotalRecordCount;
}
else
{
totalRecordsReturned = fetchResult.Entities.Count;
}
int itemsCount = recordsFound;
if (noRecordsFound)
{
AutoCompleteItem noRecordsItem = new AutoCompleteItem();
noRecordsItem.Label = SparkleResourceStrings.NoRecordsFound;
results[itemsCount] = noRecordsItem;
itemsCount++;
}
if (footerButton != null)
{
// Add the add new
AutoCompleteItem addNewLink = new AutoCompleteItem();
addNewLink.Label = footerButton.Label;
addNewLink.Image = footerButton.Image;
addNewLink.ColumnValues = null;
addNewLink.Data = "footerlink";
results[itemsCount] = addNewLink;
}
response(results);
// Disable it now so typing doesn't trigger a search
AutoCompleteOptions disableOption = new AutoCompleteOptions();
disableOption.MinLength = 100000;
inputField.Plugin <AutoCompleteObject>().AutoComplete(disableOption);
};
// Call the function with the correct 'this' context
Script.Literal("{0}.call({1}.$parent,{2},{3})", queryCommand, context, request.Term, queryCallBack);
};
options.Source = queryDelegate;
options.Focus = delegate(jQueryEvent e, AutoCompleteFocusEvent uiEvent)
{
// Prevent the value being updated in the text box we scroll through the results
Script.Literal("return false;");
};
inputField = inputField.Plugin <AutoCompleteObject>().AutoComplete(options);
// Set render template
((RenderItemDelegate)Script.Literal("{0}.data('ui-autocomplete')", inputField))._renderItem = delegate(object ul, AutoCompleteItem item)
{
if (item.Data == null)
{
return((object)jQuery.Select("<li class='ui-state-disabled'>" + item.Label + "</li>").AppendTo((jQueryObject)ul));
}
string html = "<a class='sparkle-menu-item'><span class='sparkle-menu-item-img'>";
if (item.Image != null)
{
html += @"<img src='" + item.Image + "'/>";
}
html += @"</span><span class='sparkle-menu-item-label'>" + item.Label + "</span><br>";
if (item.ColumnValues != null && item.ColumnValues.Length > 0)
{
foreach (string value in item.ColumnValues)
{
html += "<span class='sparkle-menu-item-moreinfo'>" + value + "</span>";
}
}
html += "</a>";
return((object)jQuery.Select("<li>").Append(html).AppendTo((jQueryObject)ul));
};
// Add the click binding to show the drop down
selectButton.Click(delegate(jQueryEvent e)
{
AutoCompleteOptions enableOption = new AutoCompleteOptions();
enableOption.MinLength = 0;
inputField.Focus();
inputField.Plugin <AutoCompleteObject>().AutoComplete(enableOption);
inputField.Plugin <AutoCompleteObject>().AutoComplete(AutoCompleteMethod.Search);
});
// handle the field changing
inputField.Change(delegate(jQueryEvent e)
{
string inputValue = inputField.GetValue();
if (inputValue != _value.Name)
{
// The name is different from the name of the lookup reference
// search to see if we can auto resolve it
TrySetObservable(valueAccessor, inputField, null, false);
AutoCompleteRequest lookup = new AutoCompleteRequest();
lookup.Term = inputValue;
Action <AutoCompleteItem[]> lookupResults = delegate(AutoCompleteItem[] results)
{
int selectableItems = 0;
// If there is only one, then auto-set
if (results != null)
{
foreach (AutoCompleteItem item in results)
{
if (isItemSelectable(item))
{
selectableItems++;
}
if (selectableItems > 2)
{
break;
}
}
}
if (selectableItems == 1)
{
// There is only a single value so set it now
setValue(results[0], false);
}
else
{
inputField.Value(String.Empty);
}
};
queryDelegate(lookup, lookupResults);
}
});
Action disposeCallBack = delegate()
{
if ((bool)Script.Literal("$({0}).data('ui-autocomplete')!=undefined", inputField))
{
Script.Literal("$({0}).autocomplete(\"destroy\")", inputField);
}
};
//handle disposal (if KO removes by the template binding)
Script.Literal("ko.utils.domNodeDisposal.addDisposeCallback({0}, {1})", element, (object)disposeCallBack);
Knockout.BindingHandlers["validationCore"].Init(element, valueAccessor, allBindingsAccessor, null, null);
// Bind return to searching
inputField.Keydown(delegate(jQueryEvent e)
{
if (e.Which == 13 && !justSelected) // Return pressed - but we want to do a search not move to the next cell
{
selectButton.Click();
}
else if (e.Which == 13)
{
return;
}
switch (e.Which)
{
case 13: // Return
case 38: // Up - don't navigate - but use the dropdown to select search results
case 40: // Down - don't navigate - but use the dropdown to select search results
e.PreventDefault();
e.StopPropagation();
break;
}
justSelected = false;
});
//Script.Literal("return { controlsDescendantBindings: true };");
}
