public async Task OnMagicCombinationPressed()
{
//fetch currently selected text, set up search context
string selectedTxt = _textFetcher.FetchSelectedText();
if (String.IsNullOrEmpty(selectedTxt))
{
//nothing to search
return;
}
if (_globalCtx.InitSearchContext(selectedTxt))
{
var searchCtx = _globalCtx.CurrentSearch;
IModuleDescriptor currentModule = _globalCtx.CurrentModule;
//asynchronously run the searching process using currently selected module
Task <object> adapterResponseTask = currentModule.DataAdapter.GetAsync(searchCtx);
//meanwhile, update the UI: ask user to wait for search results
WaitForReplyVm waitVm = currentModule.VmFactory.CreateWaitForReply(searchCtx);
_globalCtx.CurrentVm = waitVm;
//wait for the task to finish, get its result
searchCtx.Response = await adapterResponseTask;
//update the UI accordingly: show the result to user
SearchFinishedVm finishedVm = currentModule.VmFactory.CreateSearchFinished(searchCtx);
_globalCtx.CurrentVm = finishedVm;
}
}