1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.contacts.detail; 18 19 import android.view.View.OnClickListener; 20 21 /** 22 * This is implemented by {@link View}s that contain an alpha layer and touch interceptor layer. 23 * The alpha layer covers the entire fragment and has an alpha value which makes the fragment 24 * contents appear "dimmed" out. The touch interceptor layer covers the entire fragment so that 25 * when visible, it intercepts all touch events on the {@link View}. 26 */ 27 public interface ViewOverlay { 28 29 /** 30 * Sets the alpha value on the alpha layer (if there is one). 31 */ setAlphaLayerValue(float alpha)32 public void setAlphaLayerValue(float alpha); 33 34 /** 35 * Makes the touch intercept layer on this fragment visible (if there is one). Also adds a click 36 * listener which is called when there is a touch event on the layer. 37 */ enableTouchInterceptor(OnClickListener clickListener)38 public void enableTouchInterceptor(OnClickListener clickListener); 39 40 /** 41 * Makes the touch intercept layer on this fragment gone (if there is one). 42 */ disableTouchInterceptor()43 public void disableTouchInterceptor(); 44 } 45