132 lines
2.4 KiB
C#
132 lines
2.4 KiB
C#
/*
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* Copyright (c) 2024 ETH Zürich, IT Services
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System.ComponentModel;
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using System.Timers;
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namespace SafeExamBrowser.UserInterface.Desktop.ViewModels
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{
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internal class ProgressIndicatorViewModel : INotifyPropertyChanged
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{
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private readonly object @lock = new object();
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private Timer busyTimer;
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private int currentProgress;
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private bool isIndeterminate;
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private int maxProgress;
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private string status;
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public event PropertyChangedEventHandler PropertyChanged;
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public bool BusyIndication
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{
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set
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{
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HandleBusyIndication(value);
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}
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}
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public int CurrentProgress
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{
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get
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{
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return currentProgress;
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}
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set
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{
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currentProgress = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(CurrentProgress)));
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}
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}
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public bool IsIndeterminate
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{
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get
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{
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return isIndeterminate;
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}
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set
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{
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isIndeterminate = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(IsIndeterminate)));
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}
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}
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public int MaxProgress
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{
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get
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{
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return maxProgress;
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}
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set
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{
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maxProgress = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(MaxProgress)));
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}
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}
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public string Status
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{
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get
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{
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return status;
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}
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set
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{
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status = value;
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Status)));
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}
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}
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protected void OnPropertyChanged(string propertyName)
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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private void HandleBusyIndication(bool start)
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{
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lock (@lock)
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{
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if (busyTimer != null)
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{
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busyTimer.Elapsed -= BusyTimer_Elapsed;
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busyTimer.Stop();
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busyTimer.Close();
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}
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if (start)
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{
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busyTimer = new Timer
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{
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AutoReset = true,
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Interval = 1500,
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};
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busyTimer.Elapsed += BusyTimer_Elapsed;
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busyTimer.Start();
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}
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}
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}
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private void BusyTimer_Elapsed(object sender, ElapsedEventArgs e)
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{
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var next = Status ?? string.Empty;
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if (next.EndsWith("..."))
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{
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next = Status.Substring(0, Status.Length - 3);
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}
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else
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{
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next += ".";
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}
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Status = next;
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busyTimer.Interval = 750;
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}
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}
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}
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