1 files changed, 134 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/latin/AudioAndHapticFeedbackManager.java b/java/src/org/kelar/inputmethod/latin/AudioAndHapticFeedbackManager.java
new file mode 100644
index 000000000..1cf7fde0b
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/AudioAndHapticFeedbackManager.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2012 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;
+
+import android.content.Context;
+import android.media.AudioManager;
+import android.os.Vibrator;
+import android.view.HapticFeedbackConstants;
+import android.view.View;
+
+import org.kelar.inputmethod.latin.common.Constants;
+import org.kelar.inputmethod.latin.settings.SettingsValues;
+
+/**
+ * This class gathers audio feedback and haptic feedback functions.
+ *
+ * It offers a consistent and simple interface that allows LatinIME to forget about the
+ * complexity of settings and the like.
+ */
+public final class AudioAndHapticFeedbackManager {
+    private AudioManager mAudioManager;
+    private Vibrator mVibrator;
+
+    private SettingsValues mSettingsValues;
+    private boolean mSoundOn;
+
+    private static final AudioAndHapticFeedbackManager sInstance =
+            new AudioAndHapticFeedbackManager();
+
+    public static AudioAndHapticFeedbackManager getInstance() {
+        return sInstance;
+    }
+
+    private AudioAndHapticFeedbackManager() {
+        // Intentional empty constructor for singleton.
+    }
+
+    public static void init(final Context context) {
+        sInstance.initInternal(context);
+    }
+
+    private void initInternal(final Context context) {
+        mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+        mVibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
+    }
+
+    public void performHapticAndAudioFeedback(final int code,
+            final View viewToPerformHapticFeedbackOn) {
+        performHapticFeedback(viewToPerformHapticFeedbackOn);
+        performAudioFeedback(code);
+    }
+
+    public boolean hasVibrator() {
+        return mVibrator != null && mVibrator.hasVibrator();
+    }
+
+    public void vibrate(final long milliseconds) {
+        if (mVibrator == null) {
+            return;
+        }
+        mVibrator.vibrate(milliseconds);
+    }
+
+    private boolean reevaluateIfSoundIsOn() {
+        if (mSettingsValues == null || !mSettingsValues.mSoundOn || mAudioManager == null) {
+            return false;
+        }
+        return mAudioManager.getRingerMode() == AudioManager.RINGER_MODE_NORMAL;
+    }
+
+    public void performAudioFeedback(final int code) {
+        // if mAudioManager is null, we can't play a sound anyway, so return
+        if (mAudioManager == null) {
+            return;
+        }
+        if (!mSoundOn) {
+            return;
+        }
+        final int sound;
+        switch (code) {
+        case Constants.CODE_DELETE:
+            sound = AudioManager.FX_KEYPRESS_DELETE;
+            break;
+        case Constants.CODE_ENTER:
+            sound = AudioManager.FX_KEYPRESS_RETURN;
+            break;
+        case Constants.CODE_SPACE:
+            sound = AudioManager.FX_KEYPRESS_SPACEBAR;
+            break;
+        default:
+            sound = AudioManager.FX_KEYPRESS_STANDARD;
+            break;
+        }
+        mAudioManager.playSoundEffect(sound, mSettingsValues.mKeypressSoundVolume);
+    }
+
+    public void performHapticFeedback(final View viewToPerformHapticFeedbackOn) {
+        if (!mSettingsValues.mVibrateOn) {
+            return;
+        }
+        if (mSettingsValues.mKeypressVibrationDuration >= 0) {
+            vibrate(mSettingsValues.mKeypressVibrationDuration);
+            return;
+        }
+        // Go ahead with the system default
+        if (viewToPerformHapticFeedbackOn != null) {
+            viewToPerformHapticFeedbackOn.performHapticFeedback(
+                    HapticFeedbackConstants.KEYBOARD_TAP);
+        }
+    }
+
+    public void onSettingsChanged(final SettingsValues settingsValues) {
+        mSettingsValues = settingsValues;
+        mSoundOn = reevaluateIfSoundIsOn();
+    }
+
+    public void onRingerModeChanged() {
+        mSoundOn = reevaluateIfSoundIsOn();
+    }
+}