1 files changed, 83 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/compat/NotificationCompatUtils.java b/java/src/org/kelar/inputmethod/compat/NotificationCompatUtils.java
new file mode 100644
index 000000000..7797edacf
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/compat/NotificationCompatUtils.java
@@ -0,0 +1,83 @@
+/*
+ * 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.compat;
+
+import android.app.Notification;
+import android.os.Build;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+public class NotificationCompatUtils {
+    // Note that TextInfo.getCharSequence() is supposed to be available in API level 21 and later.
+    private static final Method METHOD_setColor =
+            CompatUtils.getMethod(Notification.Builder.class, "setColor", int.class);
+    private static final Method METHOD_setVisibility =
+            CompatUtils.getMethod(Notification.Builder.class, "setVisibility", int.class);
+    private static final Method METHOD_setCategory =
+            CompatUtils.getMethod(Notification.Builder.class, "setCategory", String.class);
+    private static final Method METHOD_setPriority =
+            CompatUtils.getMethod(Notification.Builder.class, "setPriority", int.class);
+    private static final Method METHOD_build =
+            CompatUtils.getMethod(Notification.Builder.class, "build");
+    private static final Field FIELD_VISIBILITY_SECRET =
+            CompatUtils.getField(Notification.class, "VISIBILITY_SECRET");
+    private static final int VISIBILITY_SECRET = null == FIELD_VISIBILITY_SECRET ? 0
+            : (Integer) CompatUtils.getFieldValue(null /* receiver */, null /* defaultValue */,
+                    FIELD_VISIBILITY_SECRET);
+    private static final Field FIELD_CATEGORY_RECOMMENDATION =
+            CompatUtils.getField(Notification.class, "CATEGORY_RECOMMENDATION");
+    private static final String CATEGORY_RECOMMENDATION = null == FIELD_CATEGORY_RECOMMENDATION ? ""
+            : (String) CompatUtils.getFieldValue(null /* receiver */, null /* defaultValue */,
+                    FIELD_CATEGORY_RECOMMENDATION);
+    private static final Field FIELD_PRIORITY_LOW =
+            CompatUtils.getField(Notification.class, "PRIORITY_LOW");
+    private static final int PRIORITY_LOW = null == FIELD_PRIORITY_LOW ? 0
+            : (Integer) CompatUtils.getFieldValue(null /* receiver */, null /* defaultValue */,
+                    FIELD_PRIORITY_LOW);
+
+    private NotificationCompatUtils() {
+        // This class is non-instantiable.
+    }
+
+    // Sets the accent color
+    public static void setColor(final Notification.Builder builder, final int color) {
+        CompatUtils.invoke(builder, null, METHOD_setColor, color);
+    }
+
+    public static void setVisibilityToSecret(final Notification.Builder builder) {
+        CompatUtils.invoke(builder, null, METHOD_setVisibility, VISIBILITY_SECRET);
+    }
+
+    public static void setCategoryToRecommendation(final Notification.Builder builder) {
+        CompatUtils.invoke(builder, null, METHOD_setCategory, CATEGORY_RECOMMENDATION);
+    }
+
+    public static void setPriorityToLow(final Notification.Builder builder) {
+        CompatUtils.invoke(builder, null, METHOD_setPriority, PRIORITY_LOW);
+    }
+
+    @SuppressWarnings("deprecation")
+    public static Notification build(final Notification.Builder builder) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+            // #build was added in API level 16, JELLY_BEAN
+            return (Notification) CompatUtils.invoke(builder, null, METHOD_build);
+        }
+        // #getNotification was deprecated in API level 16, JELLY_BEAN
+        return builder.getNotification();
+    }
+}