/// <summary>
/// Constructor
/// </summary>
/// <param name="controller">Price API controller</param>
internal OffersForm(PriceAPIController controller)
{
InitializeComponent();
mController = controller;
//subscribe for the offer update event of the controller
mController.OnPriceUpdate += PriceAPIController_PriceUpdate;
listViewOffers.VirtualListSize = mController.Offers.Count;
}
/// <summary>
/// Disposes the object data
/// </summary>
public void Dispose()
{
if (mPeriods != null)
{
mPeriods.Clear();
mPeriods = null;
}
if (mController != null)
{
mController.OnPriceUpdate -= OnPriceUpdate;
mController = null;
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="controller">PriceHistory API controller</param>
internal RequestHistoryForm(PriceAPIController controller)
{
InitializeComponent();
// Fills the list of the offers available
for (int i = 0; i < controller.Offers.Count; i++)
{
comboBoxInstrument.Items.Add(controller.Offers[i].Instrument);
}
if (comboBoxInstrument.Items.Count > 0)
{
comboBoxInstrument.SelectedIndex = 0;
}
// Fills the list of the timeframes available except tick timeframes (as
// ticks are not supported by PriceHistory API)
O2GTimeframeCollection timeframes = controller.Timeframes;
for (int i = 0; i < timeframes.Count; i++)
{
O2GTimeframe tf = timeframes[i];
if (tf.Unit == O2GTimeframeUnit.Tick)
{
continue;
}
TimeframeItem item = new TimeframeItem(tf);
comboBoxTimeframe.Items.Add(item);
}
if (comboBoxTimeframe.Items.Count > 0)
{
comboBoxTimeframe.SelectedIndex = 0;
}
// Initialize the range for date/time controls
dateTimePickerFrom.MinDate = new DateTime(1980, 1, 1);
dateTimePickerFrom.MaxDate = DateTime.Now;
dateTimePickerTo.MinDate = new DateTime(1980, 1, 1);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="collection">The collection of the prices to be displayed</param>
/// <param name="controller">The Price API controller</param>
internal PriceHistoryForm(IPeriodCollection collection, PriceAPIController controller)
{
InitializeComponent();
mCollection = collection;
// find the offer for the collection instrument and
// make the proper numeric format to display the prices
// of the collection.
foreach (IOffer offer in controller.Offers)
{
if (offer.Instrument == collection.Instrument)
{
mNumberFormat = "0." + new string('0', offer.Digits);
}
}
if (mNumberFormat == null)
{
mNumberFormat = "0.00";
}
// add items to the list view (for the real application virtual list view
// will be more effective solution)
for (int i = 0; i < collection.Count; i++)
{
AddItem(i);
}
// set the window title to the collection parameters
this.Text = string.Format("History:{0}[{1}]{2}", collection.Instrument, collection.Timeframe, collection.IsAlive ? " (live)" : "");
// and subscribe for the collection update event if the collection is subscribed
// for the price updates, so it will be changed every time when a new tick is received
if (collection.IsAlive)
{
mCollection.OnCollectionUpdate += this.IPeriodCollection_Updated;
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="instrument">The instrument name</param>
/// <param name="timeframe">The timeframe id (e.g. m1)</param>
/// <param name="alive">The flag indicating whether the collection shall be subscribed for updates</param>
/// <param name="controller">The price update controller</param>
public PeriodCollection(string instrument, string timeframe, bool alive, PriceAPIController controller)
{
mInstrument = instrument;
mTimeframe = timeframe;
mAlive = alive;
mFilled = false;
if (alive)
{
// if collection is alive - we will need to calculate the date/time of the candle
// to which each tick belongs to, so we need to parse the time frame name for
// further usage
if (!CandlePeriod.parsePeriod(timeframe, ref mTimeframeUnit, ref mTimeframeLength))
{
throw new ArgumentException("Invalid timeframe", "timeframe");
}
// and we need to subscribe to tick updates
mWaitingUpdates = new Queue <IOffer>();
mTradingDayOffset = controller.TradingDayOffset;
controller.OnPriceUpdate += OnPriceUpdate;
mController = controller;
}
}