diff options
Diffstat (limited to 'android/view/textservice/TextServicesManager.java')
| -rw-r--r-- | android/view/textservice/TextServicesManager.java | 206 |
1 files changed, 188 insertions, 18 deletions
diff --git a/android/view/textservice/TextServicesManager.java b/android/view/textservice/TextServicesManager.java index 8e1f2183..21ec42b1 100644 --- a/android/view/textservice/TextServicesManager.java +++ b/android/view/textservice/TextServicesManager.java @@ -1,58 +1,219 @@ /* - * Copyright (C) 2016 The Android Open Source Project + * Copyright (C) 2011 The Android Open Source Project * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at + * Licensed under the Apache License, Version 2.0 (the "License"); you may not + * use this file except in compliance with the License. You may obtain a copy of + * the License at * - * http://www.apache.org/licenses/LICENSE-2.0 + * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations under + * the License. */ package android.view.textservice; +import android.annotation.SystemService; +import android.content.Context; import android.os.Bundle; +import android.os.RemoteException; +import android.os.ServiceManager; +import android.os.ServiceManager.ServiceNotFoundException; +import android.util.Log; import android.view.textservice.SpellCheckerSession.SpellCheckerSessionListener; +import com.android.internal.textservice.ITextServicesManager; + import java.util.Locale; /** - * A stub class of TextServicesManager for Layout-Lib. + * System API to the overall text services, which arbitrates interaction between applications + * and text services. + * + * The user can change the current text services in Settings. And also applications can specify + * the target text services. + * + * <h3>Architecture Overview</h3> + * + * <p>There are three primary parties involved in the text services + * framework (TSF) architecture:</p> + * + * <ul> + * <li> The <strong>text services manager</strong> as expressed by this class + * is the central point of the system that manages interaction between all + * other parts. It is expressed as the client-side API here which exists + * in each application context and communicates with a global system service + * that manages the interaction across all processes. + * <li> A <strong>text service</strong> implements a particular + * interaction model allowing the client application to retrieve information of text. + * The system binds to the current text service that is in use, causing it to be created and run. + * <li> Multiple <strong>client applications</strong> arbitrate with the text service + * manager for connections to text services. + * </ul> + * + * <h3>Text services sessions</h3> + * <ul> + * <li>The <strong>spell checker session</strong> is one of the text services. + * {@link android.view.textservice.SpellCheckerSession}</li> + * </ul> + * */ +@SystemService(Context.TEXT_SERVICES_MANAGER_SERVICE) public final class TextServicesManager { - private static final TextServicesManager sInstance = new TextServicesManager(); - private static final SpellCheckerInfo[] EMPTY_SPELL_CHECKER_INFO = new SpellCheckerInfo[0]; + private static final String TAG = TextServicesManager.class.getSimpleName(); + private static final boolean DBG = false; + + /** + * A compile time switch to control per-profile spell checker, which is not yet ready. + * @hide + */ + public static final boolean DISABLE_PER_PROFILE_SPELL_CHECKER = true; + + private static TextServicesManager sInstance; + + private final ITextServicesManager mService; + + private TextServicesManager() throws ServiceNotFoundException { + mService = ITextServicesManager.Stub.asInterface( + ServiceManager.getServiceOrThrow(Context.TEXT_SERVICES_MANAGER_SERVICE)); + } /** * Retrieve the global TextServicesManager instance, creating it if it doesn't already exist. * @hide */ public static TextServicesManager getInstance() { - return sInstance; + synchronized (TextServicesManager.class) { + if (sInstance == null) { + try { + sInstance = new TextServicesManager(); + } catch (ServiceNotFoundException e) { + throw new IllegalStateException(e); + } + } + return sInstance; + } } + /** + * Returns the language component of a given locale string. + */ + private static String parseLanguageFromLocaleString(String locale) { + final int idx = locale.indexOf('_'); + if (idx < 0) { + return locale; + } else { + return locale.substring(0, idx); + } + } + + /** + * Get a spell checker session for the specified spell checker + * @param locale the locale for the spell checker. If {@code locale} is null and + * referToSpellCheckerLanguageSettings is true, the locale specified in Settings will be + * returned. If {@code locale} is not null and referToSpellCheckerLanguageSettings is true, + * the locale specified in Settings will be returned only when it is same as {@code locale}. + * Exceptionally, when referToSpellCheckerLanguageSettings is true and {@code locale} is + * only language (e.g. "en"), the specified locale in Settings (e.g. "en_US") will be + * selected. + * @param listener a spell checker session lister for getting results from a spell checker. + * @param referToSpellCheckerLanguageSettings if true, the session for one of enabled + * languages in settings will be returned. + * @return the spell checker session of the spell checker + */ public SpellCheckerSession newSpellCheckerSession(Bundle bundle, Locale locale, SpellCheckerSessionListener listener, boolean referToSpellCheckerLanguageSettings) { - return null; + if (listener == null) { + throw new NullPointerException(); + } + if (!referToSpellCheckerLanguageSettings && locale == null) { + throw new IllegalArgumentException("Locale should not be null if you don't refer" + + " settings."); + } + + if (referToSpellCheckerLanguageSettings && !isSpellCheckerEnabled()) { + return null; + } + + final SpellCheckerInfo sci; + try { + sci = mService.getCurrentSpellChecker(null); + } catch (RemoteException e) { + return null; + } + if (sci == null) { + return null; + } + SpellCheckerSubtype subtypeInUse = null; + if (referToSpellCheckerLanguageSettings) { + subtypeInUse = getCurrentSpellCheckerSubtype(true); + if (subtypeInUse == null) { + return null; + } + if (locale != null) { + final String subtypeLocale = subtypeInUse.getLocale(); + final String subtypeLanguage = parseLanguageFromLocaleString(subtypeLocale); + if (subtypeLanguage.length() < 2 || !locale.getLanguage().equals(subtypeLanguage)) { + return null; + } + } + } else { + final String localeStr = locale.toString(); + for (int i = 0; i < sci.getSubtypeCount(); ++i) { + final SpellCheckerSubtype subtype = sci.getSubtypeAt(i); + final String tempSubtypeLocale = subtype.getLocale(); + final String tempSubtypeLanguage = parseLanguageFromLocaleString(tempSubtypeLocale); + if (tempSubtypeLocale.equals(localeStr)) { + subtypeInUse = subtype; + break; + } else if (tempSubtypeLanguage.length() >= 2 && + locale.getLanguage().equals(tempSubtypeLanguage)) { + subtypeInUse = subtype; + } + } + } + if (subtypeInUse == null) { + return null; + } + final SpellCheckerSession session = new SpellCheckerSession(sci, mService, listener); + try { + mService.getSpellCheckerService(sci.getId(), subtypeInUse.getLocale(), + session.getTextServicesSessionListener(), + session.getSpellCheckerSessionListener(), bundle); + } catch (RemoteException e) { + throw e.rethrowFromSystemServer(); + } + return session; } /** * @hide */ public SpellCheckerInfo[] getEnabledSpellCheckers() { - return EMPTY_SPELL_CHECKER_INFO; + try { + final SpellCheckerInfo[] retval = mService.getEnabledSpellCheckers(); + if (DBG) { + Log.d(TAG, "getEnabledSpellCheckers: " + (retval != null ? retval.length : "null")); + } + return retval; + } catch (RemoteException e) { + throw e.rethrowFromSystemServer(); + } } /** * @hide */ public SpellCheckerInfo getCurrentSpellChecker() { - return null; + try { + // Passing null as a locale for ICS + return mService.getCurrentSpellChecker(null); + } catch (RemoteException e) { + throw e.rethrowFromSystemServer(); + } } /** @@ -60,13 +221,22 @@ public final class TextServicesManager { */ public SpellCheckerSubtype getCurrentSpellCheckerSubtype( boolean allowImplicitlySelectedSubtype) { - return null; + try { + // Passing null as a locale until we support multiple enabled spell checker subtypes. + return mService.getCurrentSpellCheckerSubtype(null, allowImplicitlySelectedSubtype); + } catch (RemoteException e) { + throw e.rethrowFromSystemServer(); + } } /** * @hide */ public boolean isSpellCheckerEnabled() { - return false; + try { + return mService.isSpellCheckerEnabled(); + } catch (RemoteException e) { + throw e.rethrowFromSystemServer(); + } } } |