133 lines
2.9 KiB
C#
133 lines
2.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using TelegramBotBase.Args;
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using TelegramBotBase.Base;
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namespace TelegramBotBase.Controls.Hybrid
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{
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/// <summary>
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/// This Control is for having a basic form content switching control.
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/// </summary>
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public abstract class MultiView : Base.ControlBase
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{
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/// <summary>
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/// Index of the current View.
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/// </summary>
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public int SelectedViewIndex
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{
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get
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{
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return m_iSelectedViewIndex;
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}
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set
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{
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m_iSelectedViewIndex = value;
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//Already rendered? Re-Render
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if (_Rendered)
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ForceRender().Wait();
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}
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}
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private int m_iSelectedViewIndex = 0;
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/// <summary>
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/// Hold if the View has been rendered already.
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/// </summary>
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private bool _Rendered = false;
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private List<int> Messages { get; set; }
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public MultiView()
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{
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Messages = new List<int>();
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}
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private async Task Device_MessageSent(object sender, MessageSentEventArgs e)
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{
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if (e.Origin == null || !e.Origin.IsSubclassOf(typeof(MultiView)))
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return;
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this.Messages.Add(e.MessageId);
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}
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public override void Init()
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{
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Device.MessageSent += Device_MessageSent;
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}
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public override async Task Load(MessageResult result)
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{
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_Rendered = false;
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}
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public override async Task Render(MessageResult result)
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{
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//When already rendered, skip rendering
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if (_Rendered)
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return;
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await CleanUpView();
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await RenderView(new RenderViewEventArgs(this.SelectedViewIndex));
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_Rendered = true;
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}
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/// <summary>
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/// Will get invoked on rendering the current controls view.
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/// </summary>
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/// <param name="e"></param>
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public virtual async Task RenderView(RenderViewEventArgs e)
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{
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}
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async Task CleanUpView()
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{
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var tasks = new List<Task>();
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foreach (var msg in this.Messages)
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{
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tasks.Add(this.Device.DeleteMessage(msg));
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}
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await Task.WhenAll(tasks);
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this.Messages.Clear();
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}
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/// <summary>
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/// Forces render of control contents.
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/// </summary>
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public async Task ForceRender()
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{
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await CleanUpView();
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await RenderView(new RenderViewEventArgs(this.SelectedViewIndex));
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_Rendered = true;
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}
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public override async Task Cleanup()
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{
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Device.MessageSent -= Device_MessageSent;
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await CleanUpView();
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}
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}
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}
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