private async void SaveButton_Click(object sender, RoutedEventArgs e)
{
newsPaper = NewsPaper.NewsPapers.Find((NewsPaper paper) => paper.PaperTitle == News.PaperTitle);
//保存笔迹
var currentStrokes = newsCanvas.InkPresenter.StrokeContainer.GetStrokes(); //获取笔迹
byte[] serializedStrokes = await SerializeStrokes(currentStrokes); //序列化笔迹
News.InkStrokes = serializedStrokes; //将笔迹保存到新闻实例里
newsPaper.UpdateNewsList(News);
await NewsPaper.SaveToFile(newsPaper); //保存报纸
}
/// <summary>
/// 保存按钮点击事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void SaveButton_Click(object sender, RoutedEventArgs e)
{
if (isEditMode)
{
List <Uri> editedUris = new List <Uri>();
string oldTitle = newsPaper.PaperTitle;
newsPaper.PaperTitle = newspaperTitleTextBox.Text;
//修改导航栏的标题
foreach (var element in rssInputPanel.Children)
{
try
{
var editedFeedUri = new Uri((element as TextBox).Text);
editedUris.Add(editedFeedUri);
}
catch (Exception)
{
continue;
}
}
var editedUrisEnumerables = newsPaper.FeedUrls.Union(editedUris).Intersect(editedUris);
var deletedUrisEnumerables = newsPaper.FeedUrls.Except(editedUrisEnumerables);
List <NewsItem> deletedNews = new List <NewsItem>();
foreach (var news in newsPaper.NewsList)
{
if (deletedUrisEnumerables.Contains(new Uri(news.Feed.Id)))
{
if (news.IsFavorite)
{
App.Favorites.Remove(new FavoriteModel(news));
}
deletedNews.Add(news);
}
}
//删除相应的订阅源
var deletedFeedModels = from feedModel in newsPaper.Feeds
where deletedUrisEnumerables.Contains(new Uri(feedModel.Id))
select feedModel;
var remainedFeedModel = newsPaper.Feeds.Except(deletedFeedModels);
newsPaper.Feeds = remainedFeedModel.ToList();
var remainedNewsEnumerables = newsPaper.NewsList.Except(deletedNews);
newsPaper.NewsList = new List <NewsItem>(remainedNewsEnumerables);
newsPaper.FeedUrls = new List <Uri>(editedUrisEnumerables);
foreach (var favNewsModel in App.Favorites)
{
if (favNewsModel.NewsPaperTitle == oldTitle)
{
favNewsModel.NewsPaperTitle = newsPaper.PaperTitle;
}
}
this.Frame.Navigate(typeof(PaperPage), newsPaper);
OnPaperEdited?.Invoke();
NewsPaper.SaveAll();
}
else
{
bool hasSameTitle = false;
foreach (var paper in NewsPaper.NewsPapers)
{
if (paper.PaperTitle == newspaperTitleTextBox.Text)
{
hasSameTitle = true;
break;
}
}
if (!hasSameTitle && //如果没有同名的报纸
newspaperTitleTextBox.Text != "") //并且如果名字不等与""
{
newsPaper = new NewsPaper(newspaperTitleTextBox.Text);
foreach (var element in rssInputPanel.Children)
{
try
{
newsPaper.AddFeedLink(new Uri((element as TextBox).Text));
}
catch (Exception)
{
continue;
}
}
NewsPaper.AddNewsPaper(newsPaper);
await NewsPaper.SaveToFile(newsPaper);
}
else
{
var dialog = new Windows.UI.Popups.MessageDialog("名字重复或为空");
await dialog.ShowAsync();
return;
}
}
Invoke(() =>
{
PaperPage.thisPaperpage.RefreshNews();
});
}