/// <summary>
/// Tied to the "Import Block Library" button. Imports block library from file to
/// Block Factory. Expects user to upload a single file of JSON mapping each
/// block type to its XML text representation.
/// </summary>
public void importBlockLibraryFromFile()
{
var self = this;
var files = (HTMLInputElement)Document.GetElementById("files");
// If the file list is empty, the user likely canceled in the dialog.
if (files.files.Length > 0)
{
// The input tag doesn't have the "multiple" attribute
// so the user can only choose 1 file.
var file = files.files[0];
var fileReader = new FileReader();
// Create a map of block type to XML text from the file when it has been
// read.
fileReader.AddEventListener("load", new Action <Event>((@event) => {
var fileContents = ((FileReader)@event.Target).Result;
// Create empty object to hold the read block library information.
var blockXmlTextMap = new Dictionary <string, object>();
try {
// Parse the file to get map of block type to XML text.
blockXmlTextMap = self.formatBlockLibraryForImport_(fileContents);
}
catch (Exception) {
var message = "Could not load your block library file.\n";
Window.Alert(message + "\nFile Name: " + file.Name);
return;
}
// Create a new block library storage object with inputted block library.
var blockLibStorage = new BlockLibraryStorage(
self.blockLibraryName, blockXmlTextMap);
// Update block library controller with the new block library
// storage.
self.blockLibraryController.setBlockLibraryStorage(blockLibStorage);
// Update the block library dropdown.
self.blockLibraryController.populateBlockLibrary();
// Update the exporter's block library storage.
self.exporter.setBlockLibraryStorage(blockLibStorage);
}), false);
// Read the file.
fileReader.ReadAsText(file);
}
}