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stgsharp/StgSharp.Common/MVVM/View/ViewResponder.cs
T

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C#

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
// file="ViewResponder.cs"
// Project: StgSharp
// AuthorGroup: Nitload Space
// Copyright (c) Nitload Space. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the “Software”), to deal in the Software without restriction,
// including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software,
// and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and
// this permission notice shall be included in all copies
// or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS”,
// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH
// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using StgSharp.Controlling.UsrActivity;
using StgSharp.MVVM.ViewModel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace StgSharp.MVVM.View
{
public partial class ViewBase
{
protected interface IViewResponder<out TVIew> where TVIew: ViewBase
{
Action? this[ IClickTrigger trigger ]
{
get;
set;
}
void CustomizedInitialize(
Func<IClickTrigger, string, Action> keyRegister );
void Initialize( MethodLookUpDelegate methodGetter );
void ProcessUserInput();
bool ValidateInitializing();
}
protected abstract class ViewResponder<TView> : IViewResponder<TView>
where TView: ViewBase
{
private bool _isInitialized;
private Dictionary<IClickTrigger, Action> keyCallbackIndex;
private Dictionary<string, Action> nameToCallbackMap;
private TView _binding;
protected ViewResponder( TView binding )
{
keyCallbackIndex = new Dictionary<IClickTrigger, Action>();
nameToCallbackMap = new Dictionary<string, Action>();
_binding = binding;
}
#pragma warning disable CA1043
public Action? this[ IClickTrigger trigger ]
#pragma warning restore CA1043
{
get => keyCallbackIndex.TryGetValue(
trigger, out Action callback ) ?
callback : null;
set
{
if( keyCallbackIndex.TryGetValue(
trigger, out Action callback ) ) {
callback += value;
} else {
keyCallbackIndex.Add(
trigger,
value ??
throw new ArgumentNullException(
nameof( value ) ) );
}
}
}
protected TView Binding => _binding;
public abstract void CustomizedInitialize(
Func<IClickTrigger, string, Action> keyRegister );
public void Initialize( MethodLookUpDelegate methodGetter )
{
if( _isInitialized ) {
return;
}
CustomizedInitialize(
( trigger, name ) => {
if( !nameToCallbackMap.TryGetValue(
name, out Action ret ) ) {
if( methodGetter( name, out Action lookup ) ) {
this[ trigger ] = lookup;
} else {
throw new InvalidOperationException(
$"Cannot find method named {name} in binded view model" );
}
}
return ret;
} );
}
public void ProcessUserInput()
{
foreach( KeyValuePair<IClickTrigger, Action> pair in keyCallbackIndex ) {
if( InternalIO.glfwGetKey(
_binding.ViewHandle,
pair.Key.TargetKeyOrButtonID ) == pair.Key.TriggeredStatus ) {
pair.Value();
}
}
}
public abstract bool ValidateInitializing();
}
}
}