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using MaterialDesignColors.WpfExample.Domain;
using System;
using System.ComponentModel;
using System.Threading;
using System.Windows.Input;
using System.Windows.Threading;
namespace MaterialDesignColors.WpfExample
{
public class ButtonsViewModel : INotifyPropertyChanged
{
private bool _showDismissButton;
private double _dismissButtonProgress;
private string _demoRestartCountdownText;
public ButtonsViewModel()
{
var autoStartingActionCountdownStart = DateTime.Now;
var demoRestartCountdownComplete = DateTime.Now;
var dismissRequested = false;
DismissComand = new AnotherCommandImplementation(_ => dismissRequested = true);
ShowDismissButton = true;
#region DISMISS button demo control
//just some demo code for the DISMISS button...it's up to you to set
//up the progress on the button as it would be with a progress bar.
//and then hide the button, do whatever action you want to do
new DispatcherTimer(
TimeSpan.FromMilliseconds(100),
DispatcherPriority.Normal,
new EventHandler((o, e) =>
{
if (dismissRequested)
{
ShowDismissButton = false;
dismissRequested = false;
demoRestartCountdownComplete = DateTime.Now.AddSeconds(3);
DismissButtonProgress = 0;
}
if (ShowDismissButton)
{
var totalDuration = autoStartingActionCountdownStart.AddSeconds(5).Ticks - autoStartingActionCountdownStart.Ticks;
var currentDuration = DateTime.Now.Ticks - autoStartingActionCountdownStart.Ticks;
var autoCountdownPercentComplete = 100.0 / totalDuration * currentDuration;
DismissButtonProgress = autoCountdownPercentComplete;
if (DismissButtonProgress >= 100)
{
demoRestartCountdownComplete = DateTime.Now.AddSeconds(3);
ShowDismissButton = false;
UpdateDemoRestartCountdownText(demoRestartCountdownComplete, out _);
}
}
else
{
UpdateDemoRestartCountdownText(demoRestartCountdownComplete, out bool isComplete);
if (isComplete)
{
autoStartingActionCountdownStart = DateTime.Now;
ShowDismissButton = true;
}
}
}), Dispatcher.CurrentDispatcher);
#endregion
//just some demo code for the SAVE button
SaveComand = new AnotherCommandImplementation(_ =>
{
if (IsSaveComplete == true)
{
IsSaveComplete = false;
return;
}
if (SaveProgress != 0) return;
var started = DateTime.Now;
IsSaving = true;
new DispatcherTimer(
TimeSpan.FromMilliseconds(50),
DispatcherPriority.Normal,
new EventHandler((o, e) =>
{
var totalDuration = started.AddSeconds(3).Ticks - started.Ticks;
var currentProgress = DateTime.Now.Ticks - started.Ticks;
var currentProgressPercent = 100.0 / totalDuration * currentProgress;
SaveProgress = currentProgressPercent;
if (SaveProgress >= 100)
{
IsSaveComplete = true;
IsSaving = false;
SaveProgress = 0;
((DispatcherTimer)o).Stop();
}
}), Dispatcher.CurrentDispatcher);
});
}
#region Dismiss button demo
public ICommand DismissComand { get; }
public bool ShowDismissButton
{
get { return _showDismissButton; }
set { this.MutateVerbose(ref _showDismissButton, value, RaisePropertyChanged()); }
}
public double DismissButtonProgress
{
get { return _dismissButtonProgress; }
set { this.MutateVerbose(ref _dismissButtonProgress, value, RaisePropertyChanged()); }
}
public string DemoRestartCountdownText
{
get { return _demoRestartCountdownText; }
private set { this.MutateVerbose(ref _demoRestartCountdownText, value, RaisePropertyChanged()); }
}
private void UpdateDemoRestartCountdownText(DateTime endTime, out bool isComplete)
{
var span = endTime - DateTime.Now;
var seconds = Math.Round(span.TotalSeconds < 0 ? 0 : span.TotalSeconds);
DemoRestartCountdownText = "Demo in " + seconds;
isComplete = seconds == 0;
}
#endregion
#region floating Save button demo
public ICommand SaveComand { get; }
private bool _isSaving;
public bool IsSaving
{
get { return _isSaving; }
private set { this.MutateVerbose(ref _isSaving, value, RaisePropertyChanged()); }
}
private bool _isSaveComplete;
public bool IsSaveComplete
{
get { return _isSaveComplete; }
private set { this.MutateVerbose(ref _isSaveComplete, value, RaisePropertyChanged()); }
}
private double _saveProgress;
public double SaveProgress
{
get { return _saveProgress; }
private set { this.MutateVerbose(ref _saveProgress, value, RaisePropertyChanged()); }
}
#endregion
public event PropertyChangedEventHandler PropertyChanged;
private Action<PropertyChangedEventArgs> RaisePropertyChanged()
{
return args => PropertyChanged?.Invoke(this, args);
}
}
}
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