public MainPage()
{
this.plotView = createChartPanel();
this.buyButton = new TradingButton("Buy");
this.sellButton = new TradingButton("Sell");
this.Content = new StackLayout {
Orientation = StackOrientation.Vertical,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Children =
{
createTopPanel(),
this.plotView,
createBottomPanel()
}
};
// Using messaging center to ensure that content only gets loaded once authentication is successful.
// Once Xamarin.Forms adds more support for view life cycle events, this kind of thing won't be as necessary.
// The OnAppearing() and OnDisappearing() overrides just don't quite cut the mustard yet, nor do the Appearing and Disappearing delegates.
MessagingCenter.Subscribe <App> (this, "Authenticated", (sender) => {
accountsAPI = new AccountsAPI(App.ACCOUNTS_API_HOST_URL, App.Instance.Token);
tradingAPI = new TradingAPI(App.TRADING_API_HOST, App.TRADING_API_PORT, App.Instance.Token, App.CLIENT_ID, App.CLIENT_SECRET);
fillAccounts();
fillSymbols();
refreshPlotView();
tradingAPI.Start();
tradingAPI.ExecutionEvent += (executionEvent) => {
Device.BeginInvokeOnMainThread(() => {
String filledTitle = "Order Filled at {0}";
String filledMessage = "Your request to {0} {1} of {2} was filled at VWAP {3}";
if (executionEvent.executionType == ProtoOAExecutionType.OA_ORDER_FILLED)
{
ProtoOAOrder order = executionEvent.order;
string title = String.Format(filledTitle, order.executionPrice);
string message = String.Format(filledMessage, order.tradeSide, order.requestedVolume / 100, order.symbolName, order.executionPrice);
DisplayAlert(title, message, "Close");
}
});
};
tradingAPI.SpotEvent += (spotEvent) => {
if (spotEvent.symbolName.Equals(currentSymbol.SymbolName))
{
if (spotEvent.askPriceSpecified)
{
LineAnnotation annotation = (LineAnnotation)plotView.Model.Annotations[0];
annotation.Y = spotEvent.askPrice;
annotation.Text = spotEvent.askPrice.ToString();
}
Device.BeginInvokeOnMainThread(() => {
if (spotEvent.askPriceSpecified)
{
buyButton.setPrice(spotEvent.askPrice);
plotView.Model.InvalidatePlot(true);
}
if (spotEvent.bidPriceSpecified)
{
sellButton.setPrice(spotEvent.bidPrice);
}
});
}
};
tradingAPI.SendSubscribeForTradingEventsRequest(currentTradingAccount.AccountId);
tradingAPI.SendSubscribeForSpotsRequest(currentTradingAccount.AccountId, currentSymbol.SymbolName);
});
}
public MainPage ()
{
this.plotView = createChartPanel();
this.buyButton = new TradingButton ("Buy");
this.sellButton = new TradingButton("Sell");
this.Content = new StackLayout {
Orientation = StackOrientation.Vertical,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
Children = {
createTopPanel (),
this.plotView,
createBottomPanel ()
}
};
// Using messaging center to ensure that content only gets loaded once authentication is successful.
// Once Xamarin.Forms adds more support for view life cycle events, this kind of thing won't be as necessary.
// The OnAppearing() and OnDisappearing() overrides just don't quite cut the mustard yet, nor do the Appearing and Disappearing delegates.
MessagingCenter.Subscribe<App> (this, "Authenticated", (sender) => {
accountsAPI = new AccountsAPI (App.ACCOUNTS_API_HOST_URL, App.Instance.Token);
tradingAPI = new TradingAPI (App.TRADING_API_HOST, App.TRADING_API_PORT, App.Instance.Token, App.CLIENT_ID, App.CLIENT_SECRET);
fillAccounts();
fillSymbols();
refreshPlotView ();
tradingAPI.Start ();
tradingAPI.ExecutionEvent += (executionEvent) => {
Device.BeginInvokeOnMainThread (() => {
String filledTitle = "Order Filled at {0}";
String filledMessage = "Your request to {0} {1} of {2} was filled at VWAP {3}";
if (executionEvent.executionType == ProtoOAExecutionType.OA_ORDER_FILLED) {
ProtoOAOrder order = executionEvent.order;
string title = String.Format (filledTitle, order.executionPrice);
string message = String.Format (filledMessage, order.tradeSide, order.requestedVolume / 100, order.symbolName, order.executionPrice);
DisplayAlert (title, message, "Close");
}
});
};
tradingAPI.SpotEvent += (spotEvent) => {
if (spotEvent.symbolName.Equals(currentSymbol.SymbolName)) {
if (spotEvent.askPriceSpecified) {
LineAnnotation annotation = (LineAnnotation)plotView.Model.Annotations[0];
annotation.Y = spotEvent.askPrice;
annotation.Text = spotEvent.askPrice.ToString();
}
Device.BeginInvokeOnMainThread (() => {
if (spotEvent.askPriceSpecified) {
buyButton.setPrice (spotEvent.askPrice);
plotView.Model.InvalidatePlot(true);
}
if (spotEvent.bidPriceSpecified) {
sellButton.setPrice (spotEvent.bidPrice);
}
});
}
};
tradingAPI.SendSubscribeForTradingEventsRequest (currentTradingAccount.AccountId);
tradingAPI.SendSubscribeForSpotsRequest (currentTradingAccount.AccountId, currentSymbol.SymbolName);
});
}
