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ChapterChanged event

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This commit is contained in:
Marco Gavelli
2018-07-16 14:17:45 +02:00
parent 02911d9550
commit 3e251c35ec
5 changed files with 57 additions and 48 deletions
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47
QuickLook.Plugin/QuickLook.Plugin.EpubViewer/EpubViewerControl.xaml.cs
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@@ -4,17 +4,9 @@ using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using VersOne.Epub;
namespace QuickLook.Plugin.EpubViewer
@@ -24,13 +16,15 @@ namespace QuickLook.Plugin.EpubViewer
/// </summary>
public partial class EpubViewerControl : UserControl, INotifyPropertyChanged
{
public event EventHandler<ChapterChangedEventArgs> ChapterChanged;
private EpubBookRef epubBook;
private List<EpubChapterRef> chapterRefs;
private int currChapter;
public event PropertyChangedEventHandler PropertyChanged;
public string Chapter => $"{chapterRefs?[currChapter].Title} ({currChapter + 1}/{chapterRefs?.Count})";
public string Chapter => chapterRefs != null ? $"{chapterRefs?[currChapter].Title} ({currChapter + 1}/{chapterRefs?.Count})" : "";
public EpubViewerControl()
{
@@ -46,10 +40,9 @@ namespace QuickLook.Plugin.EpubViewer
{
this.epubBook = epubBook;
this.chapterRefs = Flatten(epubBook.GetChapters());
this.currChapter = 0;
this.currChapter = -1;
this.pagePanel.EpubBook = epubBook;
this.pagePanel.ChapterRef = chapterRefs[currChapter];
OnPropertyChanged("Chapter");
this.NextChapter();
}
private List<EpubChapterRef> Flatten(List<EpubChapterRef> list)
@@ -72,14 +65,14 @@ namespace QuickLook.Plugin.EpubViewer
{
this.pagePanel.ScrollToElement(chapterRefs[currChapter].Anchor);
}
OnPropertyChanged("Chapter");
}
catch (Exception ex)
{
this.pagePanel.Text = "<div>Invalid chapter.</div>";
OnPropertyChanged("Chapter");
{
Debug.WriteLine(ex);
this.pagePanel.Text = "<div>Invalid chapter.</div>";
}
OnPropertyChanged("Chapter");
OnChapterChanged();
}
private void PrevButton_Click(object sender, RoutedEventArgs e)
@@ -97,14 +90,14 @@ namespace QuickLook.Plugin.EpubViewer
{
this.pagePanel.ScrollToElement(chapterRefs[currChapter].Anchor);
}
OnPropertyChanged("Chapter");
}
catch (Exception ex)
{
Debug.WriteLine(ex);
this.pagePanel.Text = "<div>Invalid chapter.</div>";
OnPropertyChanged("Chapter");
this.pagePanel.Text = "<div>Invalid chapter.</div>";
}
OnPropertyChanged("Chapter");
OnChapterChanged();
}
// Create the OnPropertyChanged method to raise the event
@@ -113,9 +106,13 @@ namespace QuickLook.Plugin.EpubViewer
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
}
protected void OnChapterChanged()
{
ChapterChanged?.Invoke(this, new ChapterChangedEventArgs(currChapter));
}
private void Grid_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Left)
{
this.PrevChapter();
@@ -131,5 +128,15 @@ namespace QuickLook.Plugin.EpubViewer
e.Handled = false;
}
}
public class ChapterChangedEventArgs : EventArgs
{
public ChapterChangedEventArgs(int currChapter)
{
this.NewChapter = currChapter;
}
public int NewChapter { get; set; }
}
}
}