1 files changed, 70 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/latin/ResourceUtils.java b/java/src/com/android/inputmethod/latin/ResourceUtils.java
index e01ac3dd4..b3d7ac5bf 100644
--- a/java/src/com/android/inputmethod/latin/ResourceUtils.java
+++ b/java/src/com/android/inputmethod/latin/ResourceUtils.java
@@ -17,11 +17,16 @@
 package com.android.inputmethod.latin;
 
 import android.content.res.Resources;
+import android.content.res.TypedArray;
 import android.os.Build;
+import android.util.TypedValue;
 
 import java.util.HashMap;
 
 public final class ResourceUtils {
+    public static final float UNDEFINED_RATIO = -1.0f;
+    public static final int UNDEFINED_DIMENSION = -1;
+
     private ResourceUtils() {
         // This utility class is not publicly instantiable.
     }
@@ -45,4 +50,69 @@ public final class ResourceUtils {
         }
         return sDeviceOverrideValueMap.get(key);
     }
+
+    public static boolean isValidFraction(final float fraction) {
+        return fraction >= 0.0f;
+    }
+
+    public static float getFraction(final TypedArray a, final int index, final float defValue) {
+        final TypedValue value = a.peekValue(index);
+        if (value == null || !isFractionValue(value)) {
+            return defValue;
+        }
+        return a.getFraction(index, 1, 1, defValue);
+    }
+
+    public static float getFraction(final TypedArray a, final int index) {
+        return getFraction(a, index, UNDEFINED_RATIO);
+    }
+
+    public static int getDimensionPixelSize(final TypedArray a, final int index) {
+        final TypedValue value = a.peekValue(index);
+        if (value == null || !isDimensionValue(value)) {
+            return ResourceUtils.UNDEFINED_DIMENSION;
+        }
+        return a.getDimensionPixelSize(index, ResourceUtils.UNDEFINED_DIMENSION);
+    }
+
+    public static float getDimensionOrFraction(TypedArray a, int index, int base,
+            float defValue) {
+        final TypedValue value = a.peekValue(index);
+        if (value == null) {
+            return defValue;
+        }
+        if (isFractionValue(value)) {
+            return a.getFraction(index, base, base, defValue);
+        } else if (isDimensionValue(value)) {
+            return a.getDimension(index, defValue);
+        }
+        return defValue;
+    }
+
+    public static int getEnumValue(TypedArray a, int index, int defValue) {
+        final TypedValue value = a.peekValue(index);
+        if (value == null) {
+            return defValue;
+        }
+        if (isIntegerValue(value)) {
+            return a.getInt(index, defValue);
+        }
+        return defValue;
+    }
+
+    public static boolean isFractionValue(TypedValue v) {
+        return v.type == TypedValue.TYPE_FRACTION;
+    }
+
+    public static boolean isDimensionValue(TypedValue v) {
+        return v.type == TypedValue.TYPE_DIMENSION;
+    }
+
+    public static boolean isIntegerValue(TypedValue v) {
+        return v.type >= TypedValue.TYPE_FIRST_INT && v.type <= TypedValue.TYPE_LAST_INT;
+    }
+
+    public static boolean isStringValue(TypedValue v) {
+        return v.type == TypedValue.TYPE_STRING;
+    }
 }