void IView.DisplayNothingLoadedMessage(string messageToDisplayOrNull)
{
if (string.IsNullOrWhiteSpace(messageToDisplayOrNull))
{
messageToDisplayOrNull = null;
}
if (emptyMessagesCollectionMessage == null)
{
emptyMessagesCollectionMessage = new EmptyMessagesCollectionMessage();
emptyMessagesCollectionMessage.Visible = messageToDisplayOrNull != null;
Controls.Add(emptyMessagesCollectionMessage);
emptyMessagesCollectionMessage.Dock = DockStyle.Fill;
}
else
{
emptyMessagesCollectionMessage.Visible = messageToDisplayOrNull != null;
}
if (messageToDisplayOrNull != null)
{
emptyMessagesCollectionMessage.SetMessage(messageToDisplayOrNull);
}
}
void IView.SetViewModel(IViewModel viewModel)
{
this.viewModel = viewModel;
var prototypeStringFormat = (StringFormat)StringFormat.GenericDefault.Clone();
prototypeStringFormat.SetTabStops(0, new float[] { 20 });
prototypeStringFormat.FormatFlags |=
StringFormatFlags.MeasureTrailingSpaces |
StringFormatFlags.NoFontFallback; // this is to treat \0002 and \0003 as regular characters
graphicsResources = new GraphicsResources(viewModel,
fontData => new LJD.Font(GetFontFamily(fontData.Name).Name, ToFontEmSize(fontData.Size)),
textFormat: new LJD.StringFormat(prototypeStringFormat),
(error: new LJD.Image(Properties.Resources.ErrorLogSeverity),
warn: new LJD.Image(Properties.Resources.WarnLogSeverity),
bookmark: new LJD.Image(Properties.Resources.Bookmark),
focusedMark: new LJD.Image(Properties.Resources.FocusedMsg)),
() => new LJD.Graphics(this.CreateGraphics(), ownsGraphics: true)
);
viewDrawing = new ViewDrawing(
viewModel,
graphicsResources,
dpiScale: UIUtils.Dpi.Scale(1f),
scrollPosXSelector: () => scrollPosXCache,
viewWidthSelector: () => viewWidthCache
);
viewWidthCache = this.ClientRectangle.Width;
var viewUpdater = Updaters.Create(
() => viewModel.ViewLines,
() => viewModel.FocusedMessageMark,
(_1, _2) =>
{
Invalidate();
}
);
var vScrollerUpdater = Updaters.Create(
() => viewModel.VerticalScrollerPosition,
value =>
{
scrollBarsInfo.scrollSize.Height = value != null ? ScrollBarsInfo.virtualVScrollSize : 0;
SetScrollPos(posY: (int)(value.GetValueOrDefault() * (double)(ScrollBarsInfo.virtualVScrollSize - ClientRectangle.Height + 1)));
}
);
var emptyViewMessageUpdater = Updaters.Create(
() => viewModel.EmptyViewMessage,
value =>
{
if (emptyMessagesCollectionMessage == null)
{
Controls.Add(emptyMessagesCollectionMessage = new EmptyMessagesCollectionMessage {
Dock = DockStyle.Fill
});
}
emptyMessagesCollectionMessage.Visible = value != null;
emptyMessagesCollectionMessage.SetMessage(value ?? "");
}
);
viewModel.ChangeNotification.CreateSubscription(() =>
{
viewUpdater();
vScrollerUpdater();
emptyViewMessageUpdater();
});
}
