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stgsharp/源代码/StgSharp/MVVM/View/ViewResponder.cs
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2024-07-30 09:37:25 +08:00

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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 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[ITrigger trigger] { get; set; }
void CustomizedInitialize(Func<ITrigger, string, Action> keyRegister);
void ProcessUserInput();
bool ValidateInitializing();
void Initialize(Func<string, Action> keyGetter);
}
protected abstract class ViewResponder<TView> : IViewResponder<TView> where TView : ViewBase
{
private bool _isInitialized;
private Dictionary<ITrigger, Action> keyCallbackIndex;
private Dictionary<string, Action> nameToCallbackMap;
private TView _binding;
protected ViewResponder(TView binding)
{
keyCallbackIndex = new Dictionary<ITrigger, Action>();
nameToCallbackMap = new Dictionary<string, Action>();
_binding = binding;
}
public Action? this[ITrigger trigger]
{
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<ITrigger, string, Action> keyRegister);
public void ProcessUserInput()
{
foreach (KeyValuePair<ITrigger, Action> pair in keyCallbackIndex)
{
if (InternalIO.glfwGetKey(_binding.ViewHandle, pair.Key.TargetKeyOrButtonID) == pair.Key.TriggeredStatus)
{
pair.Value();
}
}
}
public abstract bool ValidateInitializing();
public void Initialize(Func<string, Action> keyGetter)
{
if (_isInitialized)
{
return;
}
CustomizedInitialize(
(trigger, name) =>
{
if (!nameToCallbackMap.TryGetValue(name, out Action ret))
{
ret = keyGetter.Invoke(name) ??
throw new InvalidOperationException($"Cannot find method named {name} in binded view model");
}
this[trigger] = ret;
return ret;
}
);
}
}
}
}