void IList <GridColumn <T> > .Insert(int index, GridColumn <T> item)
{
_columns.Insert(index, item);
}
/// <summary>
/// Specifies a column should be constructed for the specified property.
/// add by zhangh 2013/06/03
/// </summary>
/// <param name="propertySpecifier"></param>
/// <param name="fieldName"></param>
/// <returns></returns>
public IGridColumn <T> For(Expression <Func <T, object> > propertySpecifier, string fieldName)
{
var memberExpression = GetMemberExpression(propertySpecifier);
var propertyType = GetTypeFromMemberExpression(memberExpression);
var declaringType = memberExpression == null?string.IsNullOrEmpty(fieldName) ? null : typeof(T) : memberExpression.Expression.Type;
var inferredName = memberExpression == null ? fieldName : memberExpression.Member.Name;
var column = new GridColumn <T>(propertySpecifier.Compile(), inferredName, propertyType);
if (!string.IsNullOrEmpty(fieldName))
{
column.FieldName = fieldName;
}
else
{
string tmpName = ExpressionHelper.GetExpressionText(propertySpecifier);
if (string.IsNullOrEmpty(tmpName) && memberExpression != null)
{
tmpName = memberExpression.ToString().Substring(memberExpression.ToString().IndexOf(".") + 1);
}
column.FieldName = tmpName;
}
if (!string.IsNullOrEmpty(column.FieldName))
{
string[] props = column.FieldName.Split('.');
Type type = typeof(T);
PropertyInfo property = null;
string displayName = string.Empty;
ModelMetadata metadata;
foreach (string prop in props)
{
property = type.GetProperty(prop);
if (property == null)
{
continue;
}
metadata = _metadataProvider.GetMetadataForProperty(null, type, property.Name);
if (!string.IsNullOrEmpty(metadata.DisplayName))
{
displayName += metadata.DisplayName;
column.Named(displayName);
}
type = property.PropertyType;
}
#region TODO: 格式化等其他信息 zhangh 2013/06/03
//if (declaringType != null)
//{
// metadata = _metadataProvider.GetMetadataForProperty(null, declaringType, inferredName);
// //if (!string.IsNullOrEmpty(metadata.DisplayName))
// //{
// // displayName += metadata.DisplayName;
// // column.Named(displayName);
// //}
// if (!string.IsNullOrEmpty(metadata.DisplayFormatString))
// {
// column.Format(metadata.DisplayFormatString);
// }
//}
#endregion
}
Add(column);
return(column);
}
bool ICollection <GridColumn <T> > .Remove(GridColumn <T> column)
{
return(_columns.Remove(column));
}
int IList <GridColumn <T> > .IndexOf(GridColumn <T> item)
{
return(_columns.IndexOf(item));
}
bool ICollection <GridColumn <T> > .Contains(GridColumn <T> column)
{
return(_columns.Contains(column));
}
void ICollection <GridColumn <T> > .Add(GridColumn <T> column)
{
Add(column);
}
protected virtual void Add(GridColumn <T> column)
{
_columns.Add(column);
}
protected override void RenderHeaderCellStart(GridColumn <T> column)
{
var attributes = new Dictionary <string, object>(column.HeaderAttributes);
if (IsSortingEnabled && column.IsSortable)
{
//bool isSortedByThisColumn = (GridModel.SortOptions.Column == GenerateSortColumnName(column));
bool isSortedByThisColumn = (GridModel.SortOptions.Column == column.FieldName);
if (isSortedByThisColumn)
{
string sortClass = GridModel.SortOptions.Direction == SortDirection.Ascending ? "grid-sort-asc" : "grid-sort-desc";
if (attributes.ContainsKey("class") && attributes["class"] != null)
{
sortClass = string.Join(" ", new[] { attributes["class"].ToString(), sortClass });
}
attributes["class"] = sortClass;
}
}
//add by zhangh 2013/05/31 排序列设置
if (column.IsSortable)
{
attributes["sortable"] = "true";
}
if (column.IsQueryable)
{
attributes["queryable"] = "true";
}
if (column.IsEditable)
{
attributes["editable"] = "true";
}
if (column.Selectable)
{
attributes["selectable"] = "true";
}
if (column.Reliable)
{
attributes["reliable"] = "true";
}
if (column.IsSumColumn)
{
attributes["issum"] = "true";
}
if (!string.IsNullOrEmpty(column.ColumnEqualTo))
{
attributes["equalto"] = column.ColumnEqualTo;
}
attributes["field"] = column.FieldName;
if (!column.IsHide)
{
attributes["width"] = column.ColWidth;
}
string attrs = BuildHtmlAttributes(attributes);
if (attrs.Length > 0)
{
attrs = " " + attrs;
}
RenderText(string.Format("<th{0}><div>", attrs));
}
protected virtual string GenerateSortColumnName(GridColumn <T> column)
{
//Use the explicit sort column name if specified. If not possible, fall back to the property name.
//If the property name cannot be inferred (ie the expression is not a MemberExpression) then try the display name instead.
return(column.SortColumnName ?? column.Name ?? column.DisplayName);
}
