1 files changed, 169 insertions, 0 deletions
diff --git a/services/java/com/android/server/TextServiceManagerService.java b/services/java/com/android/server/TextServiceManagerService.java
new file mode 100644
index 0000000..05e8d53
--- /dev/null
+++ b/services/java/com/android/server/TextServiceManagerService.java
@@ -0,0 +1,169 @@
+/*
+ * 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
+ *
+ *      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.
+ */
+
+package com.android.server;
+
+import com.android.internal.content.PackageMonitor;
+import com.android.internal.view.ITextServiceManager;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.view.inputmethod.InputMethodInfo;
+import android.view.inputmethod.SpellCheckerInfo;
+import android.view.inputmethod.SpellCheckerService;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Message;
+import android.provider.Settings;
+import android.text.TextUtils;
+import android.util.Slog;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public class TextServiceManagerService extends ITextServiceManager.Stub {
+    private static final String TAG = TextServiceManagerService.class.getSimpleName();
+    private static final boolean DBG = false;
+
+    private final Context mContext;
+    private boolean mSystemReady;
+    private final TextServiceMonitor mMonitor;
+    private final HashMap<String, SpellCheckerInfo> mSpellCheckerMap =
+            new HashMap<String, SpellCheckerInfo>();
+    private final ArrayList<SpellCheckerInfo> mSpellCheckerList = new ArrayList<SpellCheckerInfo>();
+
+    public void systemReady() {
+        if (!mSystemReady) {
+            mSystemReady = true;
+        }
+    }
+
+    public TextServiceManagerService(Context context) {
+        mSystemReady = false;
+        mContext = context;
+        mMonitor = new TextServiceMonitor();
+        mMonitor.register(context, true);
+        synchronized (mSpellCheckerMap) {
+            buildSpellCheckerMapLocked(context, mSpellCheckerList, mSpellCheckerMap);
+        }
+    }
+
+    private class TextServiceMonitor extends PackageMonitor {
+        @Override
+        public void onSomePackagesChanged() {
+            synchronized (mSpellCheckerMap) {
+                buildSpellCheckerMapLocked(mContext, mSpellCheckerList, mSpellCheckerMap);
+                // TODO: Update for each locale
+                final SpellCheckerInfo sci = getCurrentSpellChecker(null);
+                final String packageName = sci.getPackageName();
+                final int change = isPackageDisappearing(packageName);
+                if (change == PACKAGE_PERMANENT_CHANGE || change == PACKAGE_TEMPORARY_CHANGE) {
+                    // Package disappearing
+                    setCurSpellChecker(findAvailSpellCheckerLocked(null, packageName));
+                } else if (isPackageModified(packageName)) {
+                    // Package modified
+                    setCurSpellChecker(findAvailSpellCheckerLocked(null, packageName));
+                }
+            }
+        }
+    }
+
+    // Not used for now
+    private SpellCheckerInfo getAppearedPackageLocked(Context context, PackageMonitor monitor) {
+        final int N = mSpellCheckerList.size();
+        for (int i = 0; i < N; ++i) {
+            final SpellCheckerInfo sci = mSpellCheckerList.get(i);
+            String packageName = sci.getPackageName();
+            if (monitor.isPackageAppearing(packageName)
+                    == PackageMonitor.PACKAGE_PERMANENT_CHANGE) {
+                return sci;
+            }
+        }
+        return null;
+    }
+
+    private static void buildSpellCheckerMapLocked(Context context,
+            ArrayList<SpellCheckerInfo> list, HashMap<String, SpellCheckerInfo> map) {
+        list.clear();
+        map.clear();
+        final PackageManager pm = context.getPackageManager();
+        List<ResolveInfo> services = pm.queryIntentServices(
+                new Intent(SpellCheckerService.SERVICE_INTERFACE), PackageManager.GET_META_DATA);
+        final int N = services.size();
+        for (int i = 0; i < N; ++i) {
+            final ResolveInfo ri = services.get(i);
+            final ServiceInfo si = ri.serviceInfo;
+            final ComponentName compName = new ComponentName(si.packageName, si.name);
+            if (!android.Manifest.permission.BIND_TEXT_SERVICE.equals(si.permission)) {
+                Slog.w(TAG, "Skipping text service " + compName
+                        + ": it does not require the permission "
+                        + android.Manifest.permission.BIND_TEXT_SERVICE);
+                continue;
+            }
+            if (DBG) Slog.d(TAG, "Add: " + compName);
+            final SpellCheckerInfo sci = new SpellCheckerInfo(context, ri);
+            list.add(sci);
+            map.put(sci.getId(), sci);
+        }
+    }
+
+    // TODO: find an appropriate spell checker for specified locale
+    private SpellCheckerInfo findAvailSpellCheckerLocked(String locale, String prefPackage) {
+        final int spellCheckersCount = mSpellCheckerList.size();
+        if (spellCheckersCount == 0) {
+            Slog.w(TAG, "no available spell checker services found");
+            return null;
+        }
+        if (prefPackage != null) {
+            for (int i = 0; i < spellCheckersCount; ++i) {
+                final SpellCheckerInfo sci = mSpellCheckerList.get(i);
+                if (prefPackage.equals(sci.getPackageName())) {
+                    return sci;
+                }
+            }
+        }
+        if (spellCheckersCount > 1) {
+            Slog.w(TAG, "more than one spell checker service found, picking first");
+        }
+        return mSpellCheckerList.get(0);
+    }
+
+    // TODO: Save SpellCheckerService by supported languages. Currently only one spell
+    // checker is saved.
+    @Override
+    public SpellCheckerInfo getCurrentSpellChecker(String locale) {
+        synchronized (mSpellCheckerMap) {
+            final String curSpellCheckerId =
+                    Settings.Secure.getString(mContext.getContentResolver(),
+                            Settings.Secure.SPELL_CHECKER_SERVICE);
+            if (TextUtils.isEmpty(curSpellCheckerId)) {
+                return null;
+            }
+            return mSpellCheckerMap.get(curSpellCheckerId);
+        }
+    }
+
+    private void setCurSpellChecker(SpellCheckerInfo sci) {
+        Settings.Secure.putString(mContext.getContentResolver(),
+                Settings.Secure.SPELL_CHECKER_SERVICE, sci == null ? "" : sci.getId());
+    }
+}