private async void OnEnterClick(object sender, RoutedEventArgs e)
{
if (_navParams.SpeechMode)
{
var text = TextControl.Text.ToString();
var stream = await _speechSynthesizer.SynthesizeTextToStreamAsync(text);
_mediaElement.SetSource(stream, stream.ContentType);
_mediaElement.AutoPlay = true;
_mediaElement.Play();
}
else
{
var childNode = _navParams.ChildNode;
if (childNode == null)
{
childNode = new PhraseNode();
if (_navParams.IsCategory)
{
childNode.IsCategory = true;
}
_navParams.CurrentNode.Children.Add(childNode);
}
childNode.Caption = TextControl.Text;
childNode.Parent = _navParams.CurrentNode;
_navParams.NeedsSaving = true;
Frame.Navigate(typeof(MainPage), _navParams);
}
}
private PhraseNode LoadPhraseNode(IJsonValue jsonValue, PhraseNode parent)
{
var jsonObj = jsonValue.GetObject();
var caption = jsonObj.GetNamedString("caption");
var items = jsonObj.ContainsKey("items") ? jsonObj.GetNamedArray("items") : null;
var isCategory = jsonObj.ContainsKey("isCategory") ? jsonObj.GetNamedBoolean("isCategory") : (items != null) && (items.Count > 0);
var phraseNode = new PhraseNode
{
Caption = caption,
Parent = parent,
IsCategory = isCategory,
};
if (items == null)
{
return(phraseNode);
}
foreach (var item in items)
{
var childNode = LoadPhraseNode(item, phraseNode);
phraseNode.Children.Add(childNode);
}
return(phraseNode);
}
public ViewModel()
{
Tiles = new ObservableCollection <PhraseNode>();
RootNode = new PhraseNode();
TileWidth = 200;
TileHeight = 200;
Settings = new AppSettings();
Settings.Load();
}
public void GoToNode(PhraseNode node)
{
Tiles.Clear();
var sortedChildren =
from t in node.Children
orderby t.Caption
orderby t.IsCategory descending
select t;
foreach (PhraseNode chlldNode in sortedChildren)
{
Tiles.Add(chlldNode);
}
CurrentNode = node;
AtRootNode = false;
if (node == RootNode)
{
AtRootNode = true;
}
}
private JsonObject SavePhraseNode(PhraseNode node)
{
var jsonObj = new JsonObject();
jsonObj.Add("caption", JsonValue.CreateStringValue(node.Caption));
jsonObj.Add("isCategory", JsonValue.CreateBooleanValue(node.IsCategory));
var items = new JsonArray();
jsonObj.Add("items", items);
if (node.Children == null)
{
return(jsonObj);
}
foreach (var childNode in node.Children)
{
items.Add(SavePhraseNode(childNode));
}
return(jsonObj);
}
