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Kevin Krüger
386
VideoBrowser/ViewModels/UrlEditorViewModel.cs
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386
VideoBrowser/ViewModels/UrlEditorViewModel.cs
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namespace VideoBrowser.ViewModels
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{
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows.Input;
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using VideoBrowser.Common;
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using VideoBrowser.Controls.CefSharpBrowser.ViewModels;
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using VideoBrowser.Core;
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using VideoBrowser.Extensions;
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using VideoBrowser.Helpers;
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/// <summary>
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/// Defines the <see cref="UrlEditorViewModel" />.
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/// </summary>
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public class UrlEditorViewModel : NotifyPropertyChanged, IDisposable
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{
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#region Fields
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private string _duration;
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private string _fileName;
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private string _fileSize;
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private IList<VideoFormat> _formats;
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private string _imageUrl;
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private bool _isBusy;
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private bool _isDownloadable;
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private bool _isFocused;
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private bool _isFormatComboBoxVisible;
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private bool _isTextBoxFocused;
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private bool _isVisible;
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private string _navigateUrl;
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private VideoFormat _selectedFormat;
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private int _selectedFormatIndex;
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private string _url;
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private VideoInfo _videoInfo;
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#endregion Fields
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#region Constructors
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/// <summary>
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/// Initializes a new instance of the <see cref="UrlEditorViewModel"/> class.
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/// </summary>
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/// <param name="reader">The reader<see cref="UrlReader"/>.</param>
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/// <param name="settings">The settings<see cref="Settings"/>.</param>
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internal UrlEditorViewModel(UrlReader reader, SettingsViewModel settings)
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{
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this.UrlReader = reader;
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this.UrlReader.PropertyChanged += this.OnUrlReader_PropertyChanged;
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this.Settings = settings;
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this.DownloadCommand = new RelayCommand(this.OnDownload);
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}
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#endregion Constructors
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#region Properties
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/// <summary>
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/// Gets the DownloadCommand.
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/// </summary>
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public ICommand DownloadCommand { get; }
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/// <summary>
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/// Gets or sets the Duration.
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/// </summary>
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public string Duration { get => this._duration; internal set => this.Set(this.PropertyChangedHandler, ref this._duration, value); }
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/// <summary>
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/// Gets or sets the FileName.
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/// </summary>
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public string FileName { get => this._fileName; internal set => this.Set(this.PropertyChangedHandler, ref this._fileName, value); }
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/// <summary>
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/// Gets or sets the FileSize.
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/// </summary>
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public string FileSize { get => _fileSize; internal set => this.Set(this.PropertyChangedHandler, ref _fileSize, value); }
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/// <summary>
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/// Gets or sets the Formats.
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/// </summary>
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public IList<VideoFormat> Formats { get => this._formats; internal set => this.Set(this.PropertyChangedHandler, ref this._formats, value); }
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/// <summary>
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/// Gets the GetFolderCommand.
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/// </summary>
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public ICommand GetFolderCommand => this.Settings.GetFolderCommand;
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/// <summary>
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/// Gets or sets the ImageUrl.
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/// </summary>
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public string ImageUrl { get => this._imageUrl; set => this.Set(this.PropertyChangedHandler, ref this._imageUrl, value); }
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/// <summary>
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/// Gets or sets a value indicating whether IsBusy.
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/// </summary>
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public bool IsBusy { get => _isBusy; set => this.Set(this.PropertyChangedHandler, ref _isBusy, value); }
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/// <summary>
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/// Gets or sets a value indicating whether IsDownloadable.
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/// </summary>
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public bool IsDownloadable { get => _isDownloadable; set => this.Set(this.PropertyChangedHandler, ref _isDownloadable, value); }
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/// <summary>
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/// Gets or sets a value indicating whether IsFocused.
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/// </summary>
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public bool IsFocused
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{
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get => _isFocused;
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set
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{
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if (_isFocused == value)
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{
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return;
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}
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_isFocused = value;
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this.InvokePropertiesChanged(this.OnPropertyChanged, nameof(this.IsFocused), nameof(this.IsVisible));
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether IsFormatComboBoxVisible.
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/// </summary>
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public bool IsFormatComboBoxVisible { get => _isFormatComboBoxVisible; set => this.Set(this.PropertyChangedHandler, ref _isFormatComboBoxVisible, value); }
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/// <summary>
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/// Gets or sets a value indicating whether IsTextBoxFocused.
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/// </summary>
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public bool IsTextBoxFocused { get => _isTextBoxFocused; set => this.Set(this.PropertyChangedHandler, ref _isTextBoxFocused, value); }
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/// <summary>
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/// Gets or sets a value indicating whether IsVisible.
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/// </summary>
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public bool IsVisible { get => this._isVisible && this.IsFocused; internal set => this.Set(this.PropertyChangedHandler, ref this._isVisible, value); }
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/// <summary>
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/// Gets or sets the NavigateUrl.
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/// </summary>
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public string NavigateUrl
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{
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get => this._navigateUrl;
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set
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{
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if (this._navigateUrl == value)
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{
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return;
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}
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this._navigateUrl = value;
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this.IsDownloadable = false;
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if (this.UrlReader.IsDownloadable)
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{
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this.IsBusy = true;
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Task.Run(() =>
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{
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this.VideoInfo = YoutubeDl.GetVideoInfo(this.NavigateUrl);
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}).ContinueWith(this.LoadVideoInfo);
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}
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this.IsVisible = this.UrlReader.IsDownloadable;
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this.OnPropertyChanged();
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}
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}
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/// <summary>
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/// Gets or sets the NavigateUrlCommand.
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/// </summary>
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public ICommand NavigateUrlCommand { get; internal set; }
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/// <summary>
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/// Gets or sets the SelectedFormat.
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/// </summary>
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public VideoFormat SelectedFormat
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{
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get => this._selectedFormat;
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set
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{
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if (!this.Set(this.PropertyChangedHandler, ref this._selectedFormat, value))
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{
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return;
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}
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this.UpdateFileSize();
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}
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}
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/// <summary>
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/// Gets or sets the SelectedFormatIndex.
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/// </summary>
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public int SelectedFormatIndex { get => _selectedFormatIndex; set => this.Set(this.PropertyChangedHandler, ref _selectedFormatIndex, value); }
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/// <summary>
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/// Gets the Settings.
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/// </summary>
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public SettingsViewModel Settings { get; }
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/// <summary>
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/// Gets or sets the Url.
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/// </summary>
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public string Url { get => this._url; set => this.Set(this.PropertyChangedHandler, ref this._url, value); }
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/// <summary>
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/// Gets the UrlReader.
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/// </summary>
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public UrlReader UrlReader { get; }
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/// <summary>
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/// Gets or sets the VideoInfo.
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/// </summary>
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public VideoInfo VideoInfo
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{
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get => this._videoInfo;
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set
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{
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if (this.VideoInfo != null)
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{
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this.VideoInfo.FileSizeUpdated -= this.OnVideoInfo_FileSizeUpdated;
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}
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this.Set(this.PropertyChangedHandler, ref this._videoInfo, value);
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}
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}
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/// <summary>
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/// Gets or sets the DownloadAction.
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/// </summary>
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internal Action<Operation> DownloadAction { get; set; }
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/// <summary>
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/// Gets or sets the ShowMessageAsyncAction.
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/// </summary>
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internal Action<string, string> ShowMessageAsyncAction { get; set; }
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#endregion Properties
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#region Methods
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/// <summary>
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/// The Dispose.
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/// </summary>
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public void Dispose()
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{
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this.UrlReader.PropertyChanged -= this.OnUrlReader_PropertyChanged;
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}
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/// <summary>
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/// The LoadVideoInfo.
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/// </summary>
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/// <param name="task">The task<see cref="Task"/>.</param>
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private void LoadVideoInfo(Task task)
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{
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this.IsBusy = false;
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this.IsFocused = true;
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this.IsTextBoxFocused = true;
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this.IsDownloadable = false;
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this.IsFormatComboBoxVisible = false;
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if (this.VideoInfo.RequiresAuthentication)
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{
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////var auth = Dialogs.LoginDialog.Show(this);
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}
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else if (this.VideoInfo.Failure)
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{
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var message = "Couldn't retrieve video. Reason:\n\n" + this.VideoInfo.FailureReason;
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this.ShowMessageAsyncAction.Invoke("The Video Not Downloadable", message);
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Logger.Info(message);
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return;
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}
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else
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{
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this.FileName = YoutubeHelper.FormatTitle(this.VideoInfo.Title);
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this.VideoInfo.FileSizeUpdated += this.OnVideoInfo_FileSizeUpdated;
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this.Duration = this.VideoInfo.Duration.FormatVideoLength();
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this.Formats = YoutubeHelper.CheckFormats(this.VideoInfo.Formats);
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this.ImageUrl = this.VideoInfo.ThumbnailUrl;
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if (this.Formats.Any())
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{
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this.SelectedFormatIndex = this.Formats.Count - 1;
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}
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else
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{
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return;
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}
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}
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this.IsFormatComboBoxVisible = this.VideoInfo.Formats.Count > 0;
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this.IsDownloadable = true;
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Properties.Settings.Default.LastUrl = this.NavigateUrl;
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}
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/// <summary>
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/// The OnDownload.
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/// </summary>
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/// <param name="o">The o<see cref="object"/>.</param>
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private void OnDownload(object o)
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{
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var format = this.SelectedFormat;
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var formatTitle = format.AudioOnly ? format.AudioBitRate.ToString() : format.Format.ToString();
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this.FileName = FileHelper.GetValidFilename(this.FileName);
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var fileName = $"{this.FileName}-{formatTitle}.{format.Extension}";
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var output = Path.Combine(this.Settings.OutputFolder, fileName);
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if (File.Exists(output))
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{
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var message = $@"File ""{fileName}"" is already downloaded. If it was failed, delete it and try again.";
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this.ShowMessageAsyncAction("Download Canceled", message);
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return;
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}
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DownloadOperation operation = format.AudioOnly || format.HasAudioAndVideo
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? new DownloadOperation(format, output)
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: new DownloadOperation(format, YoutubeHelper.GetAudioFormat(format), output);
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Task.Run(() => this.DownloadAction?.Invoke(operation));
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}
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/// <summary>
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/// The OnUrlReader_PropertyChanged.
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/// </summary>
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/// <param name="sender">The sender<see cref="object"/>.</param>
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/// <param name="e">The e<see cref="PropertyChangedEventArgs"/>.</param>
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private void OnUrlReader_PropertyChanged(object sender, PropertyChangedEventArgs e)
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{
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switch (e.PropertyName)
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{
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case nameof(this.UrlReader.IsDownloadable):
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break;
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}
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}
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/// <summary>
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/// The OnVideoInfo_FileSizeUpdated.
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/// </summary>
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/// <param name="sender">The sender<see cref="object"/>.</param>
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/// <param name="e">The e<see cref="FileSizeUpdateEventArgs"/>.</param>
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private void OnVideoInfo_FileSizeUpdated(object sender, FileSizeUpdateEventArgs e)
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{
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this.FileSize = FormatString.FormatFileSize(e.VideoFormat.FileSize);
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}
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/// <summary>
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/// The UpdateFileSize.
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/// </summary>
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private void UpdateFileSize()
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{
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if (this.SelectedFormat == null)
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{
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this.FileSize = "Unkown size";
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}
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else if (this.SelectedFormat.FileSize == 0)
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{
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this.FileSize = "Getting file size...";
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}
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else
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{
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var total = this.SelectedFormat.FileSize;
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// If the format is VideoOnly, combine audio and video size.
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if (this.SelectedFormat.VideoOnly)
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{
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total += YoutubeHelper.GetAudioFormat(this.SelectedFormat).FileSize;
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}
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this.FileSize = FormatString.FormatFileSize(total);
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}
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}
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#endregion Methods
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}
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}
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