1 files changed, 49 insertions, 0 deletions
diff --git a/core/java/com/android/internal/widget/TextViewInputDisabler.java b/core/java/com/android/internal/widget/TextViewInputDisabler.java
new file mode 100644
index 000000000000..fb0b3b95b6f2
--- /dev/null
+++ b/core/java/com/android/internal/widget/TextViewInputDisabler.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015 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 com.android.internal.widget;
+
+import android.text.InputFilter;
+import android.text.Spanned;
+import android.widget.TextView;
+
+/**
+ * Helper class to disable input on a TextView. The input is disabled by swapping in an InputFilter
+ * that discards all changes. Use with care if you have customized InputFilter on the target
+ * TextView.
+ */
+public class TextViewInputDisabler {
+    private TextView mTextView;
+    private InputFilter[] mDefaultFilters;
+    private InputFilter[] mNoInputFilters = new InputFilter[] {
+            new InputFilter () {
+                @Override
+                public CharSequence filter(CharSequence source, int start, int end, Spanned dest,
+                        int dstart, int dend) {
+                    return "";
+                }
+            }
+    };
+
+    public TextViewInputDisabler(TextView textView) {
+        mTextView = textView;
+        mDefaultFilters = mTextView.getFilters();
+    }
+
+    public void setInputEnabled(boolean enabled) {
+        mTextView.setFilters(enabled ? mDefaultFilters : mNoInputFilters);
+    }
+}