private async Task ItemClicked(string key, string value)
{
// Apply selected values
SelectedKey = key;
Argument = value;
// Invoke events
await SelectedKeyChanged.InvokeAsync(key);
// Close list div
CloseList();
}
public void ResetSelection()
{
SelectedKeys.Clear();
SelectedKey = null;
if (MultiSelect)
{
if (SelectedKeysChanged.HasDelegate)
{
SelectedKeysChanged.InvokeAsync(SelectedKeys);
}
}
else
{
if (SelectedKeyChanged.HasDelegate)
{
SelectedKeyChanged.InvokeAsync(SelectedKey);
}
}
StateHasChanged();
}
/// <summary>
/// 更新绑定数据
/// </summary>
private void UpdateBindData()
{
if (SelectedNodesDictionary.Count == 0)
{
SelectedKey = null;
SelectedNode = null;
SelectedData = default(TItem);
SelectedKeys = Array.Empty <string>();
SelectedNodes = Array.Empty <TreeNode <TItem> >();
SelectedDatas = Array.Empty <TItem>();
}
else
{
var selectedFirst = SelectedNodesDictionary.FirstOrDefault();
SelectedKey = selectedFirst.Value?.Key;
SelectedNode = selectedFirst.Value;
SelectedData = selectedFirst.Value.DataItem;
SelectedKeys = SelectedNodesDictionary.Select(x => x.Value.Key).ToArray();
SelectedNodes = SelectedNodesDictionary.Select(x => x.Value).ToArray();
SelectedDatas = SelectedNodesDictionary.Select(x => x.Value.DataItem).ToArray();
}
if (SelectedKeyChanged.HasDelegate)
{
SelectedKeyChanged.InvokeAsync(SelectedKey);
}
if (SelectedNodeChanged.HasDelegate)
{
SelectedNodeChanged.InvokeAsync(SelectedNode);
}
if (SelectedDataChanged.HasDelegate)
{
SelectedDataChanged.InvokeAsync(SelectedData);
}
if (SelectedKeysChanged.HasDelegate)
{
SelectedKeysChanged.InvokeAsync(SelectedKeys);
}
}
public void RemoveSelection(string key)
{
if (MultiSelect)
{
if (!SelectedKeys.Contains(key))
{
throw new Exception("This key was not already selected.");
}
if (OnChange.HasDelegate)
{
OnChange.InvokeAsync(new BFUDropdownChangeArgs(key, false));
}
SelectedKeys.Remove(key); //this used to be following the next command. A bug? I moved it here...
if (SelectedKeysChanged.HasDelegate)
{
SelectedKeysChanged.InvokeAsync(SelectedKeys);
}
}
else
{
if (SelectedKey != null)
{
SelectedKey = null;
if (OnChange.HasDelegate)
{
OnChange.InvokeAsync(new BFUDropdownChangeArgs(key, false));
}
if (SelectedKeyChanged.HasDelegate)
{
SelectedKeyChanged.InvokeAsync(SelectedKey);
}
}
}
StateHasChanged();
}
public void AddSelection(string key)
{
if (MultiSelect)
{
if (SelectedKeys.Contains(key))
{
throw new Exception("This key was already selected.");
}
if (OnChange.HasDelegate)
{
OnChange.InvokeAsync(new BFUDropdownChangeArgs(key, true));
}
SelectedKeys.Add(key);
if (SelectedKeysChanged.HasDelegate)
{
SelectedKeysChanged.InvokeAsync(SelectedKeys);
}
}
else
{
if (SelectedKey != key)
{
SelectedKey = key;
if (OnChange.HasDelegate)
{
OnChange.InvokeAsync(new BFUDropdownChangeArgs(key, true));
}
if (SelectedKeyChanged.HasDelegate)
{
SelectedKeyChanged.InvokeAsync(SelectedKey);
}
}
isOpen = false;
}
StateHasChanged();
}
