private async void DoSearch()
{
SetInfo(null, false);
ClearImages();
string text = txtText.Text;
if (text.Length < MINCHARS)
{
m_Message = Strings.Item("SAW_Edit_OS_TooShort").Replace("%0", MINCHARS.ToString());
return;
}
m_Message = Strings.Item("SAW_Edit_OS_Contacting");
pnlImages.Invalidate();
try
{
// sample URL: https://www.opensymbols.org/api/v1/symbols/search?q=house
string searchResult = await GetStringAsync(@"https://www.opensymbols.org/api/v1/symbols/search?q=" + Uri.EscapeUriString(text));
pnlImages.Invalidate();
var json = JArray.Parse(searchResult);
if (json.Count == 0)
{
m_Message = Strings.Item("SAW_Edit_OS_NoneFound");
}
else
{
if (json.Count > MAXIMAGES)
{
SetInfo(Strings.Item("SAW_Edit_OS_TooMany").Replace("%0", json.Count.ToString()).Replace("%1", MAXIMAGES.ToString()), true);
}
int failures = 0;
foreach (JObject imageJson in json.Take(MAXIMAGES))
{
try
{
DisplayedImage image = await GetImage(imageJson);
if (image != null)
{
if (m_Message != null) // remove message, if any, once first image is displayed
{
m_Message = null;
pnlImages.Invalidate();
}
ShowPicture(image);
}
}
catch (Exception ex)
{
Utilities.LogSubError("Image " + (imageJson["symbol_key"]?.ToString() ?? "?") + " failed: " + ex.Message);
failures += 1;
}
}
if (failures > 0)
{
SetInfo(Strings.Item("SAW_Edit_OS_SomeFailed").Replace("%0", failures.ToString()), true);
}
}
}
catch (Exception ex)
{
m_Message = Strings.Item("SAW_Edit_OS_Failed") + ex.Message;
Utilities.LogSubError(ex);
}
pnlImages.Invalidate();
}