1 files changed, 37 insertions, 0 deletions
diff --git a/v1/src/main/java/com/xtremelabs/robolectric/shadows/ShadowPasswordTransformationMethod.java b/v1/src/main/java/com/xtremelabs/robolectric/shadows/ShadowPasswordTransformationMethod.java
new file mode 100644
index 000000000..69235d577
--- /dev/null
+++ b/v1/src/main/java/com/xtremelabs/robolectric/shadows/ShadowPasswordTransformationMethod.java
@@ -0,0 +1,37 @@
+package com.xtremelabs.robolectric.shadows;
+
+import android.graphics.Rect;
+import android.text.method.PasswordTransformationMethod;
+import android.text.method.TransformationMethod;
+import android.view.View;
+import com.xtremelabs.robolectric.internal.Implementation;
+import com.xtremelabs.robolectric.internal.Implements;
+
+@Implements(PasswordTransformationMethod.class)
+public class ShadowPasswordTransformationMethod implements TransformationMethod {
+
+    private static ShadowPasswordTransformationMethod transformationMethod;
+
+    @Implementation
+    public CharSequence getTransformation(CharSequence charSequence, View view) {
+        if(isEmpty(charSequence)) {
+            return "";
+        }
+        return String.format(String.format("%%0%dd", charSequence.length()), 0).replace("0", "\u2022");
+    }
+
+    @Implementation
+    public static ShadowPasswordTransformationMethod getInstance() {
+        if(transformationMethod == null){
+            transformationMethod = new ShadowPasswordTransformationMethod();
+        }
+        return transformationMethod;
+    }
+
+    @Implementation @Override
+    public void onFocusChanged(View view, CharSequence charSequence, boolean b, int i, Rect rect) { }
+
+    private boolean isEmpty(CharSequence value) {
+        return (value == null || value.length() == 0);
+    }
+}