public SearchCandidateResponse(SearchCandidateProviderProfile provider, string queryString, string[] candidates, TimeSpan elapsed, Exception exception = null)
{
Provider = provider;
QueryString = queryString;
Candidates = candidates;
Elaplsed = elapsed;
Exception = exception;
}
/// <summary>
/// Starts initialization of SearchCandidateProvider with <paramref name="profile"/>.
/// </summary>
/// <remarks>The caller must ensure that the IME settings is kept to be per-thread mode from the method is called until the returned task is completed.</remarks>
/// <param name="profile">The profile information with which SearchCandidateProvider is instantiated.</param>
/// <returns>A task object which represents an asynchronous operation to initialize a SearchCandidateProvider object.
/// The resolved value can be null if any error occurs.</returns>
static public Task <SearchCandidateProvider> FromProfile(SearchCandidateProviderProfile profile)
{
if (!(GetThreadLocalInputSettings(defaultValue: true)))
{
throw new InvalidOperationException("Aborted because this operation is dangerous while SPI_GETTHREADLOCALINPUTSETTINGS is returning true.");
}
if (profile == null)
{
throw new ArgumentException("null is not allowed", "profile");
}
return(CreateInternal(profile));
}
static private Task <SearchCandidateProvider> CreateInternal(SearchCandidateProviderProfile profile)
{
var createComplete = new TaskCompletionSource <SearchCandidateProvider>();
var thread = new Thread(() => SearchCandidateProvider.ThreadMain(profile, createComplete));
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
var threadName = "Query Thread" + (profile == null ? "" : ": " + profile.Name);
thread.Name = threadName;
return(createComplete.Task);
}
/// <summary>
/// Starts initialization of SearchCandidateProvider with <paramref name="profile"/>.
/// </summary>
/// <remarks>The caller must ensure that the IME settings is kept to be per-thread mode from the method is called until the returned task is completed.</remarks>
/// <param name="profile">The profile information with which SearchCandidateProvider is instantiated.</param>
/// <returns>A task object which represents an asynchronous operation to initialize a SearchCandidateProvider object.
/// The resolved value can be null if any error occurs.</returns>
public static Task<SearchCandidateProvider> FromProfile(SearchCandidateProviderProfile profile)
{
if (!(GetThreadLocalInputSettings(defaultValue: true)))
{
throw new InvalidOperationException("Aborted because this operation is dangerous while SPI_GETTHREADLOCALINPUTSETTINGS is returning true.");
}
if (profile == null)
{
throw new ArgumentException("null is not allowed", "profile");
}
return CreateInternal(profile);
}
internal static void ThreadMain(SearchCandidateProviderProfile profile, TaskCompletionSource <SearchCandidateProvider> createComplete)
{
using (var mainReleaser = new ComReleaser())
{
try
{
var profileMgr = mainReleaser.CreateComObject <ITfInputProcessorProfileMgr>();
if (profile == null)
{
var keyboardGuid = Guids.GUID_TFCAT_TIP_KEYBOARD;
var activeProfile = default(TF_INPUTPROCESSORPROFILE);
if (!profileMgr.GetActiveProfile(ref keyboardGuid, out activeProfile))
{
return;
}
if (activeProfile.dwProfileType == TF_PROFILETYPE.TF_PROFILETYPE_KEYBOARDLAYOUT)
{
// This is not a TIP.
return;
}
profile = new SearchCandidateProviderProfile(activeProfile.langid.ToCultureInfo(), activeProfile.clsid, activeProfile.guidProfile);
}
var name = profile.Name;
var langid = profile.LangId;
var clsid = profile.Clsid;
var profileGuid = profile.ProfileGuid;
if (!profileMgr.ActivateProfile(TF_PROFILETYPE.TF_PROFILETYPE_INPUTPROCESSOR, langid, ref clsid, ref profileGuid, IntPtr.Zero, TF_IPPMF.TF_IPPMF_DONTCARECURRENTINPUTLANGUAGE))
{
return;
}
var threadMgr = mainReleaser.CreateComObject <ITfThreadMgr2>();
var clientId = TextFrameworkDeclarations.TF_CLIENTID_NULL;
if (!threadMgr.ActivateEx(out clientId, default(TF_TMAE)))
{
return;
}
mainReleaser.RegisterCleanup(() => threadMgr.Deactivate());
var functionProvider = mainReleaser.ReceiveObject((out ITfFunctionProvider _) => threadMgr.GetFunctionProvider(ref clsid, out _));
if (functionProvider == null)
{
return;
}
if (string.IsNullOrEmpty(name))
{
functionProvider.GetDescription(out name);
}
var guidNull = new Guid();
var iid = typeof(ITfFnSearchCandidateProvider).GUID;
var searchCandidateProvider = mainReleaser.ReceiveObject((out object _) => functionProvider.GetFunction(ref guidNull, ref iid, out _)) as ITfFnSearchCandidateProvider;
if (searchCandidateProvider == null)
{
return;
}
if (string.IsNullOrEmpty(name))
{
searchCandidateProvider.GetDisplayName(out name);
}
// Refresh the |profile| with the latest |name|.
profile = new SearchCandidateProviderProfile(profile.LangId.ToCultureInfo(), profile.Clsid, profile.ProfileGuid, name);
// It's time to enter the event loop.
using (var queue = new BlockingCollection <RequestQueueItem>())
{
createComplete.SetResult(new SearchCandidateProvider {
RequestQueue = queue, Profile = profile
});
foreach (var task in queue.GetConsumingEnumerable())
{
using (var releaser = new ComReleaser())
{
var stopWatch = Stopwatch.StartNew();
var response = task.Response;
try
{
var result = searchCandidateProvider.GetSearchCandidates(task.Query).ToArray();
response.SetResult(new SearchCandidateResponse(profile, task.Query, result, stopWatch.Elapsed));
}
catch (Exception e)
{
if (!response.Task.IsCompleted)
{
response.SetResult(new SearchCandidateResponse(profile, task.Query, Enumerable.Empty <string>().ToArray(), stopWatch.Elapsed, e));
}
}
finally
{
if (!response.Task.IsCompleted)
{
response.SetResult(new SearchCandidateResponse(profile, task.Query, Enumerable.Empty <string>().ToArray(), stopWatch.Elapsed));
}
}
}
}
}
}
catch (Exception e)
{
if (!createComplete.Task.IsCompleted)
{
createComplete.SetException(e);
}
}
finally
{
if (!createComplete.Task.IsCompleted)
{
createComplete.SetResult(null);
}
}
}
}
internal static void ThreadMain(SearchCandidateProviderProfile profile, TaskCompletionSource<SearchCandidateProvider> createComplete)
{
using (var mainReleaser = new ComReleaser())
{
try
{
var profileMgr = mainReleaser.CreateComObject<ITfInputProcessorProfileMgr>();
if (profile == null)
{
var keyboardGuid = Guids.GUID_TFCAT_TIP_KEYBOARD;
var activeProfile = default(TF_INPUTPROCESSORPROFILE);
if (!profileMgr.GetActiveProfile(ref keyboardGuid, out activeProfile))
{
return;
}
if (activeProfile.dwProfileType == TF_PROFILETYPE.TF_PROFILETYPE_KEYBOARDLAYOUT)
{
// This is not a TIP.
return;
}
profile = new SearchCandidateProviderProfile(activeProfile.langid.ToCultureInfo(), activeProfile.clsid, activeProfile.guidProfile);
}
var name = profile.Name;
var langid = profile.LangId;
var clsid = profile.Clsid;
var profileGuid = profile.ProfileGuid;
if (!profileMgr.ActivateProfile(TF_PROFILETYPE.TF_PROFILETYPE_INPUTPROCESSOR, langid, ref clsid, ref profileGuid, IntPtr.Zero, TF_IPPMF.TF_IPPMF_DONTCARECURRENTINPUTLANGUAGE))
{
return;
}
var threadMgr = mainReleaser.CreateComObject<ITfThreadMgr2>();
var clientId = TextFrameworkDeclarations.TF_CLIENTID_NULL;
if (!threadMgr.ActivateEx(out clientId, default(TF_TMAE)))
{
return;
}
mainReleaser.RegisterCleanup(() => threadMgr.Deactivate());
var functionProvider = mainReleaser.ReceiveObject((out ITfFunctionProvider _) => threadMgr.GetFunctionProvider(ref clsid, out _));
if (functionProvider == null)
{
return;
}
if (string.IsNullOrEmpty(name))
{
functionProvider.GetDescription(out name);
}
var guidNull = new Guid();
var iid = typeof(ITfFnSearchCandidateProvider).GUID;
var searchCandidateProvider = mainReleaser.ReceiveObject((out object _) => functionProvider.GetFunction(ref guidNull, ref iid, out _)) as ITfFnSearchCandidateProvider;
if (searchCandidateProvider == null)
{
return;
}
if (string.IsNullOrEmpty(name))
{
searchCandidateProvider.GetDisplayName(out name);
}
// Refresh the |profile| with the latest |name|.
profile = new SearchCandidateProviderProfile(profile.LangId.ToCultureInfo(), profile.Clsid, profile.ProfileGuid, name);
// It's time to enter the event loop.
using (var queue = new BlockingCollection<RequestQueueItem>())
{
createComplete.SetResult(new SearchCandidateProvider { RequestQueue = queue, Profile = profile });
foreach (var task in queue.GetConsumingEnumerable())
{
using (var releaser = new ComReleaser())
{
var stopWatch = Stopwatch.StartNew();
var response = task.Response;
try
{
var result = searchCandidateProvider.GetSearchCandidates(task.Query).ToArray();
response.SetResult(new SearchCandidateResponse(profile, task.Query, result, stopWatch.Elapsed));
}
catch (Exception e)
{
if (!response.Task.IsCompleted)
{
response.SetResult(new SearchCandidateResponse(profile, task.Query, Enumerable.Empty<string>().ToArray(), stopWatch.Elapsed, e));
}
}
finally
{
if (!response.Task.IsCompleted)
{
response.SetResult(new SearchCandidateResponse(profile, task.Query, Enumerable.Empty<string>().ToArray(), stopWatch.Elapsed));
}
}
}
}
}
}
catch (Exception e)
{
if (!createComplete.Task.IsCompleted)
{
createComplete.SetException(e);
}
}
finally
{
if (!createComplete.Task.IsCompleted)
{
createComplete.SetResult(null);
}
}
}
}
public SearchCandidateResponse(SearchCandidateProviderProfile provider, string queryString, string[] candidates, TimeSpan elapsed, Exception exception = null)
{
Provider = provider;
QueryString = queryString;
Candidates = candidates;
Elaplsed = elapsed;
Exception = exception;
}
private static Task<SearchCandidateProvider> CreateInternal(SearchCandidateProviderProfile profile)
{
var createComplete = new TaskCompletionSource<SearchCandidateProvider>();
var thread = new Thread(() => SearchCandidateProvider.ThreadMain(profile, createComplete));
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
var threadName = "Query Thread" + (profile == null ? "" : ": " + profile.Name);
thread.Name = threadName;
return createComplete.Task;
}