public override void ApplyToBalloon(ClientBalloon balloon)
{
if (balloon.OverlayType == this.OverlayType)
{
balloon.OverlayType = OverlayType.White;
}
else
{
balloon.OverlayType = this.OverlayType;
}
}
public virtual void GenerateTextContent(ClientBalloon balloon)
{
}
public virtual void GenerateCaption(ClientBalloon balloon)
{
}
protected void GenerateQR(ClientBalloon balloon)
{
BalloonContentCache cacheEntry = balloon.BalloonContentCache;
bool imageUpdated = false;
if ((cacheEntry[CacheType.QRCode] == null) && !String.IsNullOrEmpty(balloon.Url))
{
cacheEntry[CacheType.QRCode] = ImageGenerator.GenerateQRCode(balloon.Url);
imageUpdated = true;
}
if (imageUpdated || cacheEntry[CacheType.Content] == null)
{
GenerateTextContent(balloon);
}
}
protected void GenerateImage(ClientBalloon balloon)
{
BalloonContentCache cacheEntry = balloon.BalloonContentCache;
bool imageUpdated = false;
if (cacheEntry[CacheType.WebImage] == null)
{
cacheEntry[CacheType.WebImage] = ImageGenerator.GenerateFromWeb(balloon.ImageUrl);
imageUpdated = true;
}
if (imageUpdated || cacheEntry[CacheType.Content] == null)
{
GenerateTextContent(balloon);
}
}
protected virtual void Close()
{
this.visibleBalloon = null;
if (OnClose != null) { OnClose(this, null); }
}
public void SetBalloon(ClientBalloon balloon)
{
visibleBalloon = balloon;
// When a new visible balloon is set, kick off the initialisation stuff
if (visibleBalloon != null) { Initialise(); }
}
protected void GenerateImage(ClientBalloon balloon)
{
BalloonContentCache cacheEntry = balloon.BalloonContentCache;
bool imageUpdated = false;
if (cacheEntry[CacheType.WebImage] == null)
{
try
{
cacheEntry[CacheType.WebImage] = ImageGenerator.GenerateFromWeb(balloon.ImageUrl);
imageUpdated = true;
}
catch (System.Net.WebException)
{
// ignore errors (no internet connection?), the image will be downloaded later
}
}
if (imageUpdated || cacheEntry[CacheType.Content] == null)
{
GenerateTextContent(balloon);
}
}
public override void GenerateTextContent(ClientBalloon balloon)
{
BalloonContentCache cacheEntry = balloon.BalloonContentCache;
cacheEntry[CacheType.Content] = HtmlRenderer.RenderContent(balloon);
}
public override void GenerateCaption(ClientBalloon balloon)
{
BalloonContentCache cacheEntry = balloon.BalloonContentCache;
cacheEntry[CacheType.Caption] = HtmlRenderer.RenderCaption(balloon.Label);
}
