/// <summary>
/// NavigateTo means navigate to a spot in the book. Will also do a navigation with User...
/// </summary>
/// <param name="sourceId"></param>
/// <param name="location"></param>
public void NavigateTo(NavigateControlId sourceId, BookLocation location)
{
var bookdb = BookDataContext.Get();
if (Logger.LogExtraTiming)
{
Logger.Log($"MainEpubReader: Navigation: to {location}");
}
// Save the fact that we navigated to here. Only the main reader saves this information
var navigationData = CommonQueries.BookNavigationDataFind(bookdb, BookData.BookId);
if (navigationData == null)
{
navigationData = new BookNavigationData()
{
BookId = BookData.BookId, CurrStatus = BookNavigationData.UserStatus.Reading
};
CommonQueries.BookNavigationDataAdd(bookdb, navigationData, CommonQueries.ExistHandling.IfNotExists);
}
navigationData.CurrSpot = location.Location;
navigationData.CurrStatus = BookNavigationData.UserStatus.Reading; // If I'm navigating then I'm reading?
// And now actually navigate. There are two types of navigation: navigation
// via tags and navigation by percent.
// Both need to be handled.
var percent = location.HtmlPercent;
if (percent >= 0.0)
{
if (Logger.LogExtraTiming)
{
Logger.Log($"MainEpubReader: Navigation: to percent");
}
NavigateToPercent(location);
}
else
{
if (Logger.LogExtraTiming)
{
Logger.Log($"MainEpubReader: Navigation: via location, not percent ({location})");
}
NavigateToLocation(location);
}
}
private BookNavigationData EnsureBookNavigationData(BookDataContext bookdb)
{
var nd = CommonQueries.BookNavigationDataFind(bookdb, BookData.BookId);
if (nd == null)
{
nd = new BookNavigationData()
{
BookId = BookData.BookId,
CurrSpot = GetCurrBookLocation().ToJson()
};
CommonQueries.BookNavigationDataAdd(bookdb, nd, CommonQueries.ExistHandling.IfNotExists);
nd = CommonQueries.BookNavigationDataFind(bookdb, BookData.BookId);
}
if (nd == null)
{
App.Error($"ERROR: trying to ensure navigation data, but don't have one.");
}
return(nd);
}
/// <summary>
/// Called externally in order to display a book; will use the BookNavigationData to move
/// to the previous spot.
/// </summary>
/// <param name="bookId"></param>
/// <returns></returns>
public async Task DisplayBook(BookData bookData, BookLocation location = null)
{
// Reset all of the position values.
CurrHtml = "";
CurrHtmlIndex = -1;
CurrHtmlFileName = null;
CurrScrollPosition = double.NaN;
CurrSelectPosition = double.NaN;
BookData = bookData;
var bookdb = BookDataContext.Get();
var dd = bookData.DownloadData ?? CommonQueries.DownloadedBookFind(bookdb, BookData.BookId);
var nav = bookData.NavigationData ?? CommonQueries.BookNavigationDataFind(bookdb, BookData.BookId);
if (location == null && !string.IsNullOrEmpty(nav?.CurrSpot))
{
location = BookLocation.FromJson(nav.CurrSpot);
}
SetReviewSymbol();
if (dd == null)
{
return;
}
var fullpath = dd.FullFilePath;
if (fullpath.Contains(@"\source\repos\SimpleEpubReader\SimpleEpubReader\bin\x64\Debug\AppX\Assets\PreinstalledBooks"))
{
// Whoops. The initial database might incorrectly have a developer path hard-coded.
// Replace with correct location.
var installationFolder = FolderMethods.InstallationFolder;
fullpath = $"{installationFolder}\\Assets\\PreinstalledBooks\\{dd.FileName}";
}
else if (fullpath.StartsWith("PreinstalledBooks:"))
{
// Preinstalled books are in a sort of relative path. It's designed to be an invalid
// (or at least incredibly rare) directory.
var installationFolder = FolderMethods.InstallationFolder;
fullpath = $"{installationFolder}\\Assets\\PreinstalledBooks\\{dd.FileName}";
}
var openResult = await OpenFile(fullpath, location);
switch (openResult)
{
case OpenResult.OK:
// Set up the uiAllUpPosition
var sectionSizes = new List <double>();
foreach (var file in EpubBook.ResourcesHtmlOrdered)
{
sectionSizes.Add(file.Content.Length);
}
uiAllUpPosition.SetSectionSizes(sectionSizes);
// No need to set to zero; it's already set in the OpenFile!. uiAllUpPosition.UpdatePosition(0, 0); // set to zero!
ApplicationView appView = ApplicationView.GetForCurrentView();
appView.Title = bookData.Title.Replace("\n", " -- "); // title is multi-line
break;
case OpenResult.RedownloadableError: // An error. Mark the book as not downloaded + redownload
dd.CurrFileStatus = DownloadData.FileStatus.Unknown; // deleted? gone? corrupt? we really don't know.
CommonQueries.BookSaveChanges(bookdb);
await BookSearch.DoSwipeDownloadOrReadAsync(BookData);
break;
default: // An error. Mark the book as not downloaded
dd.CurrFileStatus = DownloadData.FileStatus.Unknown; // deleted? gone? corrupt? we really don't know.
CommonQueries.BookSaveChanges(bookdb);
break;
}
}
