/// <summary>
/// Handles the <see cref="E:KeyDown" /> event.
/// </summary>
/// <param name="args">The <see cref="Microsoft.AspNetCore.Components.Web.KeyboardEventArgs"/> instance containing the event data.</param>
protected async System.Threading.Tasks.Task OnKeyDown(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs args)
{
if (Disabled)
{
return;
}
var key = $"{args.Key}".Trim();
if (AllowFiltering && key.Length == 1)
{
await JSRuntime.InvokeAsync <string>("Radzen.setInputValue", search, key);
await JSRuntime.InvokeVoidAsync("Radzen.focusElement", SearchID);
}
await OnKeyPress(args);
}
protected async System.Threading.Tasks.Task OnKeyPress(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs args)
{
await HandleKeyPress(args);
}
protected virtual async System.Threading.Tasks.Task OnFilterKeyPress(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs args)
{
await HandleKeyPress(args, true);
}
private async System.Threading.Tasks.Task HandleKeyPress(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs args, bool isFilter = false)
{
if (Disabled)
{
return;
}
var items = (LoadData.HasDelegate ? Data != null ? Data : Enumerable.Empty <object>() : (View != null ? View : Enumerable.Empty <object>())).Cast <object>();
var key = args.Code != null ? args.Code : args.Key;
if (!args.AltKey && (key == "ArrowDown" || key == "ArrowLeft" || key == "ArrowUp" || key == "ArrowRight"))
{
try
{
var newSelectedIndex = await JSRuntime.InvokeAsync <int>("Radzen.focusListItem", search, list, key == "ArrowDown" || key == "ArrowRight", selectedIndex);
if (!Multiple)
{
if (newSelectedIndex != selectedIndex && newSelectedIndex >= 0 && newSelectedIndex <= items.Count() - 1)
{
selectedIndex = newSelectedIndex;
await OnSelectItem(items.ElementAt(selectedIndex), true);
}
}
else
{
selectedIndex = await JSRuntime.InvokeAsync <int>("Radzen.focusListItem", search, list, key == "ArrowDown", selectedIndex);
}
}
catch (Exception)
{
//
}
}
else if (Multiple && key == "Space")
{
if (selectedIndex >= 0 && selectedIndex <= items.Count() - 1)
{
await JSRuntime.InvokeAsync <string>("Radzen.setInputValue", search, $"{searchText}".Trim());
await OnSelectItem(items.ElementAt(selectedIndex), true);
}
}
else if (key == "Enter" || (args.AltKey && key == "ArrowDown"))
{
await OpenPopup(key, isFilter);
}
else if (key == "Escape" || key == "Tab")
{
await JSRuntime.InvokeVoidAsync("Radzen.closePopup", PopupID);
}
else if (key == "Delete")
{
if (!Multiple && selectedItem != null)
{
selectedIndex = -1;
await OnSelectItem(null, true);
}
if (AllowFiltering && isFilter)
{
Debounce(DebounceFilter, FilterDelay);
}
}
else if (AllowFiltering && isFilter)
{
Debounce(DebounceFilter, FilterDelay);
}
}
/// <summary>
/// Handles keys pressed in navigation box so single key strokes can invoke a function
/// </summary>
/// <param name="eventArgs"></param>
/// <returns></returns>
protected async Task KeyPressed(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs eventArgs)
{
switch (eventArgs.Key)
{
case "Z": ShowHelp(); break;
case "E":
if (@Model.myAccess.DeleteEdit || Model.myHeader.AuthorID == Model.myAccess.UserID)
{
await EditNote();
}
// editing = true;
//StateHasChanged();
break;
case "D":
if (@Model.myAccess.DeleteEdit || Model.myHeader.AuthorID == Model.myAccess.UserID)
{
DeleteNote();
}
break;
case "Enter":
if (!eventArgs.ShiftKey)
{
await TextHasChanged(""); // next note
}
else
{
await NextBaseNote();
}
break;
case "b":
await PreviousNote();
break;
case "B":
await PreviousBaseNote();
break;
case "N":
await NewResponse();
break;
case "L":
case "I":
Done(); // we are dome here...
break;
case " ":
if (eventArgs.ShiftKey)
{
if (!isSearch)
{
return;
}
SearchResults.RemoveAt(0);
if (SearchResults.Count == 0)
{
ShowMessage("Search Complete!");
isSearch = false;
return;
}
currentHeader = SearchResults[0];
await SetNote();
}
else
{
if (seqIndx == -1)
{
break;
}
await ContinueSeq();
}
break;
case "F":
Forward();
break;
case "H":
Html();
break;
case "h":
html();
break;
case "m":
mail();
break;
case "S":
StopTimer();
await OnClick.InvokeAsync("Search");
break;
case "M":
await Markit();
break;
case "U":
Browse();
break;
case "C":
Copy(currentHeader);
break;
default:
//var parameters = new ModalParameters();
//parameters.Add("Message", eventArgs.Key);
//var options = new ModalOptions() { HideCloseButton = false };
//Modal.OnClose += HideDialog;
//Modal.Show<MessageBox>("", parameters, options);
break;
}
}
