/// <summary>
/// For more information, see:
/// http://www.w3.org/html/wg/drafts/html/master/embedded-content.html#update-the-image-data
/// </summary>
void GetImage(Url source)
{
if (source.IsInvalid)
{
source = null;
}
else if (_img != null && source.Equals(_img.Source))
{
return;
}
if (_download != null && !_download.IsCompleted)
{
_download.Cancel();
}
var document = Owner;
if (source != null && document != null)
{
var loader = document.Loader;
if (loader != null)
{
var request = this.CreateRequestFor(source);
var download = loader.DownloadAsync(request);
var task = this.ProcessResource <IImageInfo>(download, result => _img = result);
document.DelayLoad(task);
_download = download;
}
}
}
/// <summary>
/// Cancels the outstanding download, if any.
/// </summary>
public void Cancel()
{
if (_download != null && !_download.IsCompleted)
{
_download.Cancel();
}
}
public void Abort()
{
if (_readyState == RequesterState.Loading)
{
_download.Cancel();
Fire(AbortEvent);
}
}
protected void StartDownload(ResourceRequest request)
{
if (_download != null && !_download.IsCompleted)
{
_download.Cancel();
}
_download = _loader.DownloadAsync(request);
}
void UpdateSource(String value)
{
//TODO More complex check if something is already loading (what is loading, cancel?, ...)
//see: https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-load
if (_download != null && !_download.IsCompleted)
{
_download.Cancel();
}
var document = Owner;
_network = MediaNetworkState.Idle;
if (value != null && document != null)
{
var loader = document.Loader;
if (loader != null)
{
var url = new Url(value);
var request = this.CreateRequestFor(url);
_network = MediaNetworkState.Loading;
_download = loader.DownloadAsync(request);
var task = this.ProcessResource <TResource>(_download, result =>
{
_media = result;
if (_media == null)
{
_network = MediaNetworkState.NoSource;
}
});
document.DelayLoad(task);
}
}
}
void UpdateSource(String value)
{
if (_download != null && !_download.IsCompleted)
{
_download.Cancel();
}
var document = Owner;
if (!String.IsNullOrEmpty(value) && document != null)
{
var loader = document.Loader;
if (loader != null)
{
var url = new Url(Source);
var request = this.CreateRequestFor(url);
var download = loader.DownloadAsync(request);
var task = this.ProcessResource <IObjectInfo>(download, result => _obj = result);
document.DelayLoad(task);
_download = download;
}
}
}
public void Build()
{
if (built)
{
return;
}
if (item == null)
{
built = true;
return;
}
Grid DisplayGrid = new Grid();
DisplayGrid.RowDefinitions.Add(new RowDefinition {
Height = GridLength.Auto
});
DisplayGrid.RowDefinitions.Add(new RowDefinition {
Height = GridLength.Auto
});
DisplayGrid.RowDefinitions.Add(new RowDefinition {
Height = GridLength.Auto
});
DisplayGrid.RowDefinitions.Add(new RowDefinition {
Height = GridLength.Auto
});
DisplayGrid.RowDefinitions.Add(new RowDefinition());
DisplayGrid.ColumnDefinitions.Add(new ColumnDefinition {
Width = GridLength.Auto
});
DisplayGrid.ColumnDefinitions.Add(new ColumnDefinition {
Width = GridLength.Auto
});
DisplayGrid.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(400)
});
DisplayGrid.ColumnDefinitions.Add(new ColumnDefinition());
var margin = new Thickness(2.5);
border = new Border
{
Margin = margin,
BorderThickness = new Thickness(1)
};
border.SetResourceReference(Border.BorderBrushProperty, "BlackBrush");
border.Child = DisplayGrid;
Tile stopButton = new Tile
{
Width = 50,
Height = 50,
Margin = margin,
Content = new PackIconModern {
Width = 40, Height = 40, Kind = PackIconModernKind.Close
},
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Center
};
stopButton.Click += async(s, e) =>
{
var remove = await item.Cancel();
if (remove)
{
GlobalConsts.Downloads.Remove(this);
}
};
//Col 0:
Grid.SetRow(stopButton, 0);
Grid.SetRowSpan(stopButton, 6);
Grid.SetColumn(stopButton, 0);
Image image = new Image
{
Width = 200,
Height = 112.5,
Margin = margin,
Source = new BitmapImage(new Uri(item.ImageUrl)),
};
//Col 1:
Grid.SetRow(image, 0);
Grid.SetRowSpan(image, 6);
Grid.SetColumn(image, 1);
TextBlock
title = new TextBlock
{
TextWrapping = TextWrapping.Wrap,
Margin = margin,
FontSize = 14,
Text = item.Title
},
currentTitle = new TextBlock
{
TextWrapping = TextWrapping.Wrap,
Margin = margin,
FontSize = 14
},
totalDownloaded = new TextBlock
{
TextWrapping = TextWrapping.Wrap,
Margin = margin,
FontSize = 14
},
currentStatus = new TextBlock
{
TextWrapping = TextWrapping.Wrap,
Margin = margin,
FontSize = 14
},
downloadSpeed = new TextBlock
{
TextWrapping = TextWrapping.Wrap,
Margin = margin,
FontSize = 14
},
downloadPrecent = new TextBlock
{
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Center
};
//Col 2:
Grid.SetRow(title, 0);
Grid.SetColumn(title, 2);
Grid.SetRow(currentTitle, 1);
Grid.SetColumn(currentTitle, 2);
Grid.SetRow(totalDownloaded, 2);
Grid.SetColumn(totalDownloaded, 2);
Grid.SetRow(currentStatus, 3);
Grid.SetColumn(currentStatus, 2);
Grid.SetRow(downloadSpeed, 4);
Grid.SetColumn(downloadSpeed, 2);
Binding
currentTitleBinding = new Binding
{
Source = item,
Path = new PropertyPath("CurrentTitle"),
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
Mode = BindingMode.OneWay
},
totalDownloadedBinding = new Binding
{
Source = item,
Path = new PropertyPath("TotalDownloaded"),
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
Mode = BindingMode.OneWay
},
currentStatusBinding = new Binding
{
Source = item,
Path = new PropertyPath("CurrentStatus"),
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
Mode = BindingMode.OneWay
},
downloadSpeedBinding = new Binding
{
Source = item,
Path = new PropertyPath("CurrentDownloadSpeed"),
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
Mode = BindingMode.OneWay
},
progressBinding = new Binding
{
Source = item,
Path = new PropertyPath("CurrentProgressPrecent"),
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
Mode = BindingMode.OneWay
},
downloadPrecentBinding = new Binding
{
Source = item,
Path = new PropertyPath("CurrentProgressPrecent"),
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
Mode = BindingMode.OneWay
};
Grid progressBarGrid = new Grid {
Margin = margin
};
MetroProgressBar
progressBar = new MetroProgressBar
{
Width = 550,
Height = 30,
VerticalAlignment = VerticalAlignment.Center
};
progressBarGrid.Children.Add(progressBar);
progressBarGrid.Children.Add(downloadPrecent);
//Col 3:
Grid.SetRow(progressBarGrid, 0);
Grid.SetRowSpan(progressBarGrid, 6);
Grid.SetColumn(progressBarGrid, 3);
currentTitle.SetBinding(TextBlock.TextProperty, currentTitleBinding);
totalDownloaded.SetBinding(TextBlock.TextProperty, totalDownloadedBinding);
currentStatus.SetBinding(TextBlock.TextProperty, currentStatusBinding);
downloadSpeed.SetBinding(TextBlock.TextProperty, downloadSpeedBinding);
progressBar.SetBinding(ProgressBar.ValueProperty, progressBinding);
downloadPrecent.SetBinding(TextBlock.TextProperty, downloadPrecentBinding);
//add everything to grid
DisplayGrid.Children.Add(stopButton);
DisplayGrid.Children.Add(image);
DisplayGrid.Children.Add(title);
DisplayGrid.Children.Add(currentTitle);
DisplayGrid.Children.Add(totalDownloaded);
DisplayGrid.Children.Add(currentStatus);
DisplayGrid.Children.Add(downloadSpeed);
DisplayGrid.Children.Add(progressBarGrid);
built = true;
}