protected override bool OnBackButtonPressed()
{
if (popupPage != null)
{
Navigation.RemovePopupPageAsync(popupPage);
popupPage = null;
return(true);
}
return(base.OnBackButtonPressed());
}
async void OnShowComment(object sender, EventArgs args)
{
if (UserTokenSettings.Current.HasExpiresIn())
{
MessagingService.Current.SendMessage(MessageKeys.NavigateLogin);
}
else
{
var page = new NewsCommentPopupPage(news, new Action <NewsComments>(OnResult));
await Navigation.PushPopupAsync(page);
}
}
public NewsDetailsPage(News news)
{
InitializeComponent();
Xamarin.Forms.PlatformConfiguration.iOSSpecific.Page.SetUseSafeArea(this, true);
this.news = news;
BindingContext = new NewsDetailsViewModel(news);
var cancel = new ToolbarItem
{
Text = "Share",
Command = new Command(() =>
{
DependencyService.Get <IShares>().SharesIcon("https://news.cnblogs.com/n/" + news.Id + "/", news.Title, news.TopicIcon);
})
};
ToolbarItems.Add(cancel);
if (Device.Android == Device.RuntimePlatform)
{
cancel.Icon = "toolbar_share.png";
}
formsWebView.OnContentLoaded += delegate(object sender, EventArgs e)
{
RefreshNews();
};
formsWebView.AddLocalCallback("reload", async delegate(string obj)
{
if (formsWebView.LoadStatus == LoadMoreStatus.StausDefault || formsWebView.LoadStatus == LoadMoreStatus.StausError || formsWebView.LoadStatus == LoadMoreStatus.StausFail)
{
var newsComments = JsonConvert.SerializeObject(await ViewModel.ReloadCommentsAsync());
await formsWebView.InjectJavascriptAsync("updateComments(" + newsComments + ");");
}
});
formsWebView.AddLocalCallback("editItem", delegate(string id)
{
var newsComments = ViewModel.NewsComments.Where(n => n.CommentID == int.Parse(id)).FirstOrDefault();
Device.BeginInvokeOnMainThread(async() =>
{
var page = new NewsCommentPopupPage(news, new Action <NewsComments>(OnResult), newsComments);
await Navigation.PushPopupAsync(page);
});
});
formsWebView.AddLocalCallback("deleteItem", async delegate(string id)
{
var result = await ViewModel.DeleteCommentAsync(int.Parse(id));
await formsWebView.InjectJavascriptAsync("deleteComment(" + id + "," + result.ToString().ToLower() + ");");
});
}