protected object GetReferencedValue <T>(MGrid <T> pGrid, IMGridColumn column, Type pPropertyType, string pReferencedId)
{
var propInfo = column.GetType().GetProperty(nameof(MGridComplexPropertyColumn <object, object> .ReferencedValues));
var referencedValues = propInfo.GetValue(column) as IEnumerable;
var enumerator = referencedValues.GetEnumerator();
if (!enumerator.MoveNext())
{
return(null);
}
var firstValue = enumerator.Current;
var pi = pGrid.GetIdentifierProperty(firstValue);
//no idict support right now
var refIdValue = ReflectionHelper.ChangeType(pReferencedId, pi.PropertyType);
var queryable = referencedValues.AsQueryable();
var param = Expression.Parameter(pPropertyType, "p");
var property = Expression.Property(param, pi.Name);
var exprEqual = Expression.Equal(property, Expression.Constant(refIdValue));
var lambda = Expression.Lambda(exprEqual, param);
var method = FirstOrDefaultMethod.MakeGenericMethod(new[] { pPropertyType });
var val = method.Invoke(null, new object[] { queryable, lambda });
return(val);
}
#pragma warning restore BL0005 // Component parameter should not be set outside of its component.
public static MGridState GetGridState <T>(MGrid <T> pGrid)
{
return(new MGridState()
{
IsFilterRowVisible = pGrid.IsFilterRowVisible,
Page = pGrid.Pager?.CurrentPage,
PageSize = pGrid.Pager?.PageSize,
SelectedRow = pGrid.Selected,
FilterState = pGrid.FilterInstructions.Select(f =>
{
if (f.GridColumn.GetType().Name == typeof(MGridComplexPropertyColumn <object, object>).Name)
{
var id = ReflectionHelper.GetPropertyValue(f.Value, "Id") as Guid?;
if (id != null)
{
return new MGridFilterState()
{
ColumnIdentifier = f.GridColumn.Identifier,
ReferencedId = id.Value
};
}
}
return new MGridFilterState()
{
ColumnIdentifier = f.GridColumn.Identifier,
Value = f.Value
};
}
).Where(f => f != null).ToArray(),
SorterState = pGrid.SortInstructions.Select(s => new MGridSorterState()
{
ColumnIdentifier = s.GridColumn.Identifier,
Direction = s.Direction,
Index = s.Index
}).Where(s => s != null).ToArray()
});
}
#pragma warning disable BL0005 // Component parameter should not be set outside of its component.
public async Task RestoreGridState <T>(MGrid <T> pGrid)
{
try
{
var state = await mPersistService.GetValueAsync <MGridState>(pGrid);
if (state == null)
{
return;
}
pGrid.SelectRow(state.SelectedRow);
if (pGrid.Pager != null)
{
if (state.Page != null)
{
pGrid.Pager.CurrentPage = Math.Max(1, state.Page.Value);
}
if (state.PageSize != null)
{
pGrid.Pager.PageSize = Math.Max(1, state.PageSize.Value);
}
}
pGrid.FilterInstructions = state.FilterState.Select(filterState =>
{
var column = pGrid.ColumnsList.FirstOrDefault(c => c.Identifier == filterState.ColumnIdentifier);
if (column == null || !(column is IMGridPropertyColumn propc))
{
return(null);
}
IMPropertyInfo pi = pGrid.PropertyInfos[propc];
object value = null;
if (filterState.ReferencedId != null && column.GetType().Name == typeof(MGridComplexPropertyColumn <object, object>).Name)
{
value = GetReferencedValue(pGrid, column, propc.PropertyType, filterState.ReferencedId);
}
else
{
var jsone = filterState.Value as JsonElement?;
try
{
value = jsone?.ToObject(pi.PropertyType);
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
if (value == null)
{
return(null);
}
return(new FilterInstruction()
{
Value = value,
GridColumn = column,
PropertyInfo = pi
});
}).Where(f => f != null).ToList();
pGrid.SortInstructions = state.SorterState.Select(s =>
{
var column = pGrid.ColumnsList.FirstOrDefault(c => c.Identifier == s.ColumnIdentifier);
if (column == null || !(column is IMGridPropertyColumn propc))
{
return(null);
}
IMPropertyInfo pi = pGrid.PropertyInfos[propc];
return(new SortInstruction()
{
GridColumn = propc,
Direction = s.Direction,
Index = s.Index,
PropertyInfo = pi,
Comparer = column.GetComparer()
});
}).Where(s => s != null).ToList();
await pGrid.SetFilterRowVisible(state.IsFilterRowVisible);
}
catch (Exception e)
{
Console.Write(e);
}
}
public void SaveGridState <T>(MGrid <T> pGrid)
{
var state = GetGridState(pGrid);
_ = mPersistService.SetValueAsync(pGrid, state);
}