/// <summary>
/// Performs the default index-based selector, same as String.Format.
/// </summary>
public void EvaluateSelector(object current, Selector selector, ref bool handled, ref object result, FormatDetails formatDetails)
{
int selectorValue;
if (int.TryParse(selector.Text, out selectorValue))
{
// Argument Index:
// Just like String.Format, the arg index must be in-range,
// should be the first item, and shouldn't have any operator:
if (selector.SelectorIndex == 0
&& selectorValue < formatDetails.OriginalArgs.Length
&& selector.Operator == "")
{
// This selector is an argument index.
result = formatDetails.OriginalArgs[selectorValue];
handled = true;
}
// Alignment:
// An alignment item should be preceeded by a comma
else if (selector.Operator == ",")
{
// This selector is actually an Alignment modifier.
result = current; // (don't change the current item)
formatDetails.Placeholder.Alignment = selectorValue; // Set the alignment
handled = true;
}
}
}
public void EvaluateSelector(object current, Selector selector, ref bool handled, ref object result, FormatDetails formatDetails)
{
// See if current is a IDictionary and contains the selector:
var rawDict = current as IDictionary;
if (rawDict != null)
{
foreach (DictionaryEntry entry in rawDict)
{
var key = (entry.Key as string) ?? entry.Key.ToString();
if (key.Equals(selector.Text, Smart.Settings.GetCaseSensitivityComparison()))
{
result = entry.Value;
handled = true;
return;
}
}
}
// this check is for dynamics and generic dictionaries
var dict = current as IDictionary<string, object>;
if (dict != null)
{
var val = dict.FirstOrDefault(x => x.Key.Equals(selector.Text, Smart.Settings.GetCaseSensitivityComparison())).Value;
if (val != null)
{
result = val;
handled = true;
}
}
}
public void EvaluateSelector(object current, Selector selector, ref bool handled, ref object result, FormatDetails formatDetails)
{
// See if current is a IDictionary and contains the selector:
var dict = current as IDictionary;
if (dict != null && dict.Contains(selector.Text))
{
result = dict[selector.Text];
handled = true;
}
}
public void EvaluateSelector(object current, Selector selector, ref bool handled, ref object result, FormatDetails formatDetails)
{
// See if current is a IDictionary and contains the selector
var dict = current as IDictionary;
if (dict != null && dict.Contains(selector.Text))
{
result = dict[selector.Text];
handled = true;
return;
}
// See if current is an IDictionary<string, object> (also an "expando" object)
// and contains the selector.
var genericDictionary = current as IDictionary<string, object>;
if (genericDictionary != null && genericDictionary.ContainsKey(selector.Text))
{
result = genericDictionary[selector.Text];
handled = true;
}
}
/// <summary>
/// This allows an integer to be used as a selector to index an array (or list).
///
/// This is better described using an example:
/// CustomFormat("{Dates.2.Year}", {#1/1/2000#, #12/31/2999#, #9/9/9999#}) = "9999"
/// The ".2" selector is used to reference Dates[2].
/// </summary>
public void EvaluateSelector(object current, Selector selector, ref bool handled, ref object result, FormatDetails formatDetails)
{
// See if we're trying to access a specific index:
int itemIndex;
var currentList = current as IList;
var isAbsolute = (selector.SelectorIndex == 0 && selector.Operator.Length == 0);
if (!isAbsolute && currentList != null && int.TryParse(selector.Text, out itemIndex) && itemIndex < currentList.Count)
{
// The current is a List, and the selector is a number;
// let's return the List item:
// Example: {People[2].Name}
// ^List ^itemIndex
result = currentList[itemIndex];
handled = true;
}
// We want to see if there is an "Index" property that was supplied.
if (selector.Text.Equals("index", StringComparison.OrdinalIgnoreCase))
{
// Looking for "{Index}"
if (selector.SelectorIndex == 0)
{
result = CollectionIndex;
handled = true;
return;
}
// Looking for 2 lists to sync: "{List1: {List2[Index]} }"
if (currentList != null && 0 <= CollectionIndex && CollectionIndex < currentList.Count)
{
result = currentList[CollectionIndex];
handled = true;
}
}
}
public void EvaluateSelector(object current, Selector selector, ref bool handled, ref object result, FormatDetails formatDetails)
{
if (current == null)
{
return;
}
// REFLECTION:
// Let's see if the argSelector is a Selectors/Field/ParseFormat:
var sourceType = current.GetType();
var members = sourceType.GetMember(selector.Text);
foreach (var member in members)
{
switch (member.MemberType)
{
case MemberTypes.Field:
// Selector is a Field; retrieve the value:
var field = (FieldInfo) member;
result = field.GetValue(current);
handled = true;
return;
case MemberTypes.Property:
case MemberTypes.Method:
MethodInfo method;
if (member.MemberType == MemberTypes.Property)
{
// Selector is a Property
var prop = (PropertyInfo) member;
// Make sure the property is not WriteOnly:
if (prop.CanRead)
{
method = prop.GetGetMethod();
}
else
{
continue;
}
}
else
{
// Selector is a method
method = (MethodInfo) member;
}
// Check that this method is valid -- it needs to return a value and has to be parameterless:
// We are only looking for a parameterless Function/Property:
if (method.GetParameters().Length > 0)
{
continue;
}
// Make sure that this method is not void! It has to be a Function!
if (method.ReturnType == typeof(void))
{
continue;
}
// Retrieve the Selectors/ParseFormat value:
result = method.Invoke(current, new object[0]);
handled = true;
return;
}
}
}
