1 files changed, 84 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/latin/utils/UncachedInputMethodManagerUtils.java b/java/src/org/kelar/inputmethod/latin/utils/UncachedInputMethodManagerUtils.java
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+++ b/java/src/org/kelar/inputmethod/latin/utils/UncachedInputMethodManagerUtils.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2014 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 org.kelar.inputmethod.latin.utils;
+
+import android.content.Context;
+import android.provider.Settings;
+import android.view.inputmethod.InputMethodInfo;
+import android.view.inputmethod.InputMethodManager;
+
+/*
+ * A utility class for {@link InputMethodManager}. Unlike {@link RichInputMethodManager}, this
+ * class provides synchronous, non-cached access to {@link InputMethodManager}. The setup activity
+ * is a good example to use this class because {@link InputMethodManagerService} may not be aware of
+ * this IME immediately after this IME is installed.
+ */
+public final class UncachedInputMethodManagerUtils {
+    /**
+     * Check if the IME specified by the context is enabled.
+     * CAVEAT: This may cause a round trip IPC.
+     *
+     * @param context package context of the IME to be checked.
+     * @param imm the {@link InputMethodManager}.
+     * @return true if this IME is enabled.
+     */
+    public static boolean isThisImeEnabled(final Context context,
+            final InputMethodManager imm) {
+        final String packageName = context.getPackageName();
+        for (final InputMethodInfo imi : imm.getEnabledInputMethodList()) {
+            if (packageName.equals(imi.getPackageName())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Check if the IME specified by the context is the current IME.
+     * CAVEAT: This may cause a round trip IPC.
+     *
+     * @param context package context of the IME to be checked.
+     * @param imm the {@link InputMethodManager}.
+     * @return true if this IME is the current IME.
+     */
+    public static boolean isThisImeCurrent(final Context context,
+            final InputMethodManager imm) {
+        final InputMethodInfo imi = getInputMethodInfoOf(context.getPackageName(), imm);
+        final String currentImeId = Settings.Secure.getString(
+                context.getContentResolver(), Settings.Secure.DEFAULT_INPUT_METHOD);
+        return imi != null && imi.getId().equals(currentImeId);
+    }
+
+    /**
+     * Get {@link InputMethodInfo} of the IME specified by the package name.
+     * CAVEAT: This may cause a round trip IPC.
+     *
+     * @param packageName package name of the IME.
+     * @param imm the {@link InputMethodManager}.
+     * @return the {@link InputMethodInfo} of the IME specified by the <code>packageName</code>,
+     * or null if not found.
+     */
+    public static InputMethodInfo getInputMethodInfoOf(final String packageName,
+            final InputMethodManager imm) {
+        for (final InputMethodInfo imi : imm.getInputMethodList()) {
+            if (packageName.equals(imi.getPackageName())) {
+                return imi;
+            }
+        }
+        return null;
+    }
+}