More control over vibration

The newer haptic feedback API that is used instead of the vibrator
service since ef03dfe doesn't work for everyone.

The new vibration option allow to choose both the newer API ("system")
and the older API ("strong", "medium", "light").

1 files changed, 81 insertions, 0 deletions

diff --git a/srcs/juloo.keyboard2/VibratorCompat.java b/srcs/juloo.keyboard2/VibratorCompat.java
new file mode 100644
index 0000000..99ff5f5
--- /dev/null
+++ b/srcs/juloo.keyboard2/VibratorCompat.java
@@ -0,0 +1,81 @@
+package juloo.keyboard2;
+
+import android.content.Context;
+import android.os.Build.VERSION;
+import android.os.Vibrator;
+import android.view.HapticFeedbackConstants;
+import android.view.View;
+
+public final class VibratorCompat
+{
+  public static void vibrate(View v, VibrationBehavior b)
+  {
+    switch (b)
+    {
+      case DISABLED:
+        break;
+      case SYSTEM:
+        if (VERSION.SDK_INT >= 8)
+          v.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP,
+              HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING);
+        break;
+      case STRONG:
+        vibrator_vibrate(v, 50);
+        break;
+      case MEDIUM:
+        vibrator_vibrate(v, 20);
+        break;
+      case LIGHT:
+        vibrator_vibrate(v, 10);
+        break;
+    }
+  }
+
+  /** Use the older [Vibrator] when the newer API is not available or the user
+      wants more control. */
+  static void vibrator_vibrate(View v, int duration)
+  {
+    try
+    {
+      get_vibrator(v).vibrate(duration);
+    }
+    catch (Exception e) {}
+  }
+
+  static Vibrator vibrator_service = null;
+
+  static Vibrator get_vibrator(View v)
+  {
+    if (vibrator_service == null)
+    {
+      vibrator_service =
+        (Vibrator)v.getContext().getSystemService(Context.VIBRATOR_SERVICE);
+    }
+    return vibrator_service;
+  }
+
+  public static enum VibrationBehavior
+  {
+    DISABLED,
+    SYSTEM,
+    STRONG,
+    MEDIUM,
+    LIGHT;
+
+    VibrationBehavior() {}
+
+    /** Defaults [SYSTEM] for unrecognized strings. */
+    public static VibrationBehavior of_string(String s)
+    {
+      switch (s)
+      {
+        case "disabled": return DISABLED;
+        case "system": return SYSTEM;
+        case "strong": return STRONG;
+        case "medium": return MEDIUM;
+        case "light": return LIGHT;
+        default: return SYSTEM;
+      }
+    }
+  }
+}