| /* |
| * Copyright (C) 2006 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 android.text.method; |
| |
| import android.graphics.Rect; |
| import android.view.View; |
| |
| /** |
| * TextView uses TransformationMethods to do things like replacing the |
| * characters of passwords with dots, or keeping the newline characters |
| * from causing line breaks in single-line text fields. |
| */ |
| public interface TransformationMethod |
| { |
| /** |
| * Returns a CharSequence that is a transformation of the source text -- |
| * for example, replacing each character with a dot in a password field. |
| * Beware that the returned text must be exactly the same length as |
| * the source text, and that if the source text is Editable, the returned |
| * text must mirror it dynamically instead of doing a one-time copy. |
| */ |
| public CharSequence getTransformation(CharSequence source, View view); |
| |
| /** |
| * This method is called when the TextView that uses this |
| * TransformationMethod gains or loses focus. |
| */ |
| public void onFocusChanged(View view, CharSequence sourceText, |
| boolean focused, int direction, |
| Rect previouslyFocusedRect); |
| } |