protected override void OnParse(ConvertEventArgs e)
{
base.OnParse(e);
bool b = (bool)e.Value;
if (b)
{
e.Value = TrueValue;
}
else
{
e.Cancel = true;
}
}
private void SetPropertyValue(object data)
{
PropertyDescriptor pd = TypeDescriptor.GetProperties(manager.Current).Find(binding_member_info.BindingField, true);
if (pd.IsReadOnly)
{
return;
}
ConvertEventArgs e = new ConvertEventArgs(data, pd.PropertyType);
data = ParseData(e);
if (!e.Cancel)
{
pd.SetValue(manager.Current, data);
}
}
void PushData(bool force, bool force_control_update)
{
if (manager == null || manager.IsSuspended || manager.Count == 0 || manager.Position == -1)
{
if (manager != null)
{
Console.WriteLine("PushData return : manager.IsSuspended = {0}, manager.Count = {1}, managet.Position = {2}",
manager.IsSuspended, manager.Count, manager.Position);
}
else
{
Console.WriteLine("PushData return : manager = null");
}
return;
}
if (!force && control_update_mode == ControlUpdateMode.Never)
{
return;
}
if (is_null_desc != null)
{
bool is_null = (bool)is_null_desc.GetValue(manager.Current);
if (is_null)
{
data = Convert.DBNull;
return;
}
}
PropertyDescriptor pd = TypeDescriptor.GetProperties(manager.Current).Find(binding_member_info.BindingField, true);
if (pd == null)
{
data = manager.Current;
}
else
{
data = pd.GetValue(manager.Current);
}
if ((data == null || data == DBNull.Value) && null_value != null)
{
data = null_value;
}
try {
ConvertEventArgs e = new ConvertEventArgs(data, data_type);
data = FormatData(e);
Console.WriteLine("PushData : data = {0}, e.Cancel = {1}",
data, e.Cancel);
if (!e.Cancel)
{
SetControlValue(data, force_control_update);
}
} catch (Exception e) {
if (formatting_enabled)
{
FireBindingComplete(BindingCompleteContext.ControlUpdate, e, e.Message);
return;
}
throw e;
}
if (formatting_enabled)
{
FireBindingComplete(BindingCompleteContext.ControlUpdate, null, null);
}
}
private void SetControlValue(object data, bool force_control_update)
{
if (!force_control_update) {
//Set control property value only if differs from data
PropertyDescriptor pd = TypeDescriptor.GetProperties (manager.Current).Find (binding_member_info.BindingField, true);
object control_data = control_property.GetValue (source);
if (control_data == null)
control_data = datasource_null_value;
ConvertEventArgs e = new ConvertEventArgs (control_data, pd.PropertyType);
control_data = ParseData (e);
//We need to compare different types eg. Decimal and string
if (StringComparer.InvariantCultureIgnoreCase.Compare ((control_data ?? (pd.PropertyType.IsValueType ? (Activator.CreateInstance (pd.PropertyType) ?? string.Empty) : string.Empty)).ToString (),
(data ?? string.Empty).ToString())== 0) {
if (data == null || control_data == null) {
return;
}
}
//fallback for object that are different but have same ToString values
if (data != null && control_data != null) {
if (data.GetHashCode () == control_data.GetHashCode ()) {
return;
}
}
}
control_property.SetValue (source, data);
}
private void SetPropertyValue(object data)
{
PropertyDescriptor pd = TypeDescriptor.GetProperties (manager.Current).Find (binding_member_info.BindingField, true);
if (pd.IsReadOnly)
return;
ConvertEventArgs e = new ConvertEventArgs (data, pd.PropertyType);
data = ParseData (e);
if (!e.Cancel)
pd.SetValue (manager.Current, data);
}
void PushData(bool force, bool force_control_update)
{
if (manager == null || manager.IsSuspended || manager.Count == 0 || manager.Position == -1) {
if (manager != null) {
Console.WriteLine ("PushData return : manager.IsSuspended = {0}, manager.Count = {1}, managet.Position = {2}",
manager.IsSuspended, manager.Count, manager.Position);
}
else {
Console.WriteLine ("PushData return : manager = null");
}
return;
}
if (!force && control_update_mode == ControlUpdateMode.Never)
return;
if (is_null_desc != null) {
bool is_null = (bool) is_null_desc.GetValue (manager.Current);
if (is_null) {
data = Convert.DBNull;
return;
}
}
PropertyDescriptor pd = TypeDescriptor.GetProperties (manager.Current).Find (binding_member_info.BindingField, true);
if (pd == null) {
data = manager.Current;
} else {
data = pd.GetValue (manager.Current);
}
if ((data == null || data == DBNull.Value) && null_value != null)
data = null_value;
try {
ConvertEventArgs e = new ConvertEventArgs (data, data_type);
data = FormatData (e);
Console.WriteLine ("PushData : data = {0}, e.Cancel = {1}",
data, e.Cancel);
if (!e.Cancel)
SetControlValue (data, force_control_update);
} catch (Exception e) {
if (formatting_enabled) {
FireBindingComplete (BindingCompleteContext.ControlUpdate, e, e.Message);
return;
}
throw e;
}
if (formatting_enabled)
FireBindingComplete (BindingCompleteContext.ControlUpdate, null, null);
}
private object ParseData(ConvertEventArgs e)
{
object data = e.Value;
Type data_type = e.DesiredType;
OnParse (e);
if (e.Cancel)
return data;
if (data_type.IsInstanceOfType (e.Value))
return e.Value;
if (e.Value == Convert.DBNull)
return e.Value;
if (e.Value == null) {
bool nullable = data_type.IsGenericType && !data_type.ContainsGenericParameters &&
data_type.GetGenericTypeDefinition () == typeof (Nullable<>);
return data_type.IsValueType && !nullable ? Convert.DBNull : null;
}
return ConvertData (e.Value, data_type);
}
private object FormatData(ConvertEventArgs e)
{
object data = e.Value;
OnFormat (e);
if (data_type.IsInstanceOfType (e.Value))
return e.Value;
if (formatting_enabled) {
if ((e.Value == null || e.Value == Convert.DBNull) && null_value != null)
return null_value;
if (e.Value is IFormattable && data_type == typeof (string)) {
IFormattable formattable = (IFormattable) e.Value;
return formattable.ToString (format_string, format_info);
}
}
if (e.Value == null && data_type == typeof (object))
return Convert.DBNull;
return ConvertData (data, data_type);
}
protected virtual void OnParse(ConvertEventArgs cevent)
{
if (Parse!=null)
Parse (this, cevent);
}
protected virtual void OnFormat(ConvertEventArgs cevent)
{
if (Format!=null)
Format (this, cevent);
}
