/// <summary>
/// 点击选择复选框时触发此方法
/// </summary>
/// <param name="state"></param>
/// <param name="val"></param>
protected virtual async Task OnCheck(CheckboxState state, TItem val)
{
if (state == CheckboxState.Checked)
{
SelectedItems.Add(val);
}
else
{
SelectedItems.Remove(val);
}
if (SelectedRowsChanged.HasDelegate)
{
await SelectedRowsChanged.InvokeAsync(SelectedRows);
}
if (Items != null && HeaderCheckbox != null)
{
var headerCheckboxState = SelectedItems.Count == 0 && Items.Count() > 0
? CheckboxState.UnChecked
: (SelectedItems.Count == Items.Count() ? CheckboxState.Checked : CheckboxState.Mixed);
await HeaderCheckbox.SetState(headerCheckboxState);
}
if (SelectedRowsChanged.HasDelegate)
{
await SelectedRowsChanged.InvokeAsync(SelectedRows);
}
}
/// <summary>
/// 点击选择复选框时触发此方法
/// </summary>
protected Func <CheckboxState, TItem, Task> OnCheck() => async(state, val) =>
{
if (state == CheckboxState.Checked)
{
SelectedItems.Add(val);
}
else
{
SelectedItems.Remove(val);
}
if (SelectedRowsChanged.HasDelegate)
{
await SelectedRowsChanged.InvokeAsync(SelectedRows);
}
if (HeaderCheckbox != null)
{
var headerCheckboxState = SelectedItems.Count == 0 && Items.Any()
? CheckboxState.UnChecked
: (SelectedItems.Count == Items.Count() ? CheckboxState.Checked : CheckboxState.Mixed);
await HeaderCheckbox.SetState(headerCheckboxState);
}
if (SelectedRowsChanged.HasDelegate)
{
await SelectedRowsChanged.InvokeAsync(SelectedRows);
}
// https://gitee.com/LongbowEnterprise/BootstrapBlazor/issues/I1UYQG
StateHasChanged();
};
private async Task OnSelectedRowsChanged()
{
if (SelectedRowsChanged.HasDelegate)
{
await SelectedRowsChanged.InvokeAsync(SelectedRows);
}
}
void ITable.OnSelectionChanged(int[] checkedIndex)
{
var list = new List <TItem>();
foreach (var index in checkedIndex)
{
list.Add(DataSource.ElementAt(index));
}
SelectedRows = list.ToArray();
SelectedRowsChanged.InvokeAsync(SelectedRows);
}
protected void ChangeRowStatus(Status status, object row)
{
RequireRender = true;
chkAll.MarkAsRequireRender();
if (status == Status.Checked)
{
SelectedRows.Add(row);
}
else
{
SelectedRows.Remove(row);
}
if (SelectedRowsChanged.HasDelegate)
{
_ = SelectedRowsChanged.InvokeAsync(SelectedRows);
}
ResetSelectAllStatus();
}
protected void ChangeAllStatus(Status status)
{
RequireRender = true;
if (status == Status.Checked)
{
SelectedRows = new HashSet <object>(rows);
}
else
{
SelectedRows = new HashSet <object>();
}
foreach (var item in rowCheckBoxses.Keys)
{
item.MarkAsRequireRender();
}
if (SelectedRowsChanged.HasDelegate)
{
_ = SelectedRowsChanged.InvokeAsync(SelectedRows);
}
ResetSelectAllStatus();
}
/// <summary>
/// 点击 Header 选择复选框时触发此方法
/// </summary>
/// <param name="state"></param>
/// <param name="val"></param>
protected virtual Task OnHeaderCheck(CheckboxState state, TItem val)
{
if (Items != null)
{
switch (state)
{
case CheckboxState.Checked:
// select all
SelectedItems.Clear();
SelectedItems.AddRange(Items);
// callback
if (SelectedRowsChanged.HasDelegate)
{
SelectedRowsChanged.InvokeAsync(SelectedRows);
}
StateHasChanged();
break;
case CheckboxState.UnChecked:
// unselect all
SelectedItems.Clear();
// callback
if (SelectedRowsChanged.HasDelegate)
{
SelectedRowsChanged.InvokeAsync(SelectedRows);
}
StateHasChanged();
break;
default:
break;
}
}
return(Task.CompletedTask);
}