1 files changed, 45 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/PrefixedEditText.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/PrefixedEditText.java
new file mode 100644
index 000000000..3cbb114e8
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/PrefixedEditText.java
@@ -0,0 +1,45 @@
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.*;
+import android.support.annotation.NonNull;
+import android.util.AttributeSet;
+import android.widget.EditText;
+
+import org.sufficientlysecure.keychain.R;
+
+public class PrefixedEditText extends EditText {
+
+    private String mPrefix;
+    private Rect mPrefixRect = new Rect();
+
+	public PrefixedEditText(Context context, AttributeSet attrs) {
+		super(context, attrs);
+        TypedArray style = context.getTheme().obtainStyledAttributes(
+                attrs, R.styleable.PrefixedEditText, 0, 0);
+        mPrefix = style.getString(R.styleable.PrefixedEditText_prefix);
+        if (mPrefix == null) {
+            mPrefix = "";
+        }
+	}
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        getPaint().getTextBounds(mPrefix, 0, mPrefix.length(), mPrefixRect);
+
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    }
+
+    @Override
+    protected void onDraw(@NonNull Canvas canvas) {
+        super.onDraw(canvas);
+        canvas.drawText(mPrefix, super.getCompoundPaddingLeft(), getBaseline(), getPaint());
+    }
+
+    @Override
+    public int getCompoundPaddingLeft() {
+        return super.getCompoundPaddingLeft() + mPrefixRect.width();
+    }
+
+}
+\ No newline at end of file