1 /* 2 * Copyright (C) 2015 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 package com.android.settings; 17 18 import android.content.Context; 19 import android.support.v7.preference.Preference; 20 import android.support.v7.preference.PreferenceViewHolder; 21 import android.util.AttributeSet; 22 import android.view.View; 23 import android.view.View.OnClickListener; 24 import android.widget.ImageView; 25 26 public class CancellablePreference extends Preference implements OnClickListener { 27 28 private boolean mCancellable; 29 private OnCancelListener mListener; 30 CancellablePreference(Context context)31 public CancellablePreference(Context context) { 32 super(context); 33 setWidgetLayoutResource(R.layout.cancel_pref_widget); 34 } 35 CancellablePreference(Context context, AttributeSet attrs)36 public CancellablePreference(Context context, AttributeSet attrs) { 37 super(context, attrs); 38 setWidgetLayoutResource(R.layout.cancel_pref_widget); 39 } 40 setCancellable(boolean isCancellable)41 public void setCancellable(boolean isCancellable) { 42 mCancellable = isCancellable; 43 notifyChanged(); 44 } 45 setOnCancelListener(OnCancelListener listener)46 public void setOnCancelListener(OnCancelListener listener) { 47 mListener = listener; 48 } 49 50 @Override onBindViewHolder(PreferenceViewHolder view)51 public void onBindViewHolder(PreferenceViewHolder view) { 52 super.onBindViewHolder(view); 53 54 ImageView cancel = (ImageView) view.findViewById(R.id.cancel); 55 cancel.setVisibility(mCancellable ? View.VISIBLE : View.INVISIBLE); 56 cancel.setOnClickListener(this); 57 } 58 59 @Override onClick(View v)60 public void onClick(View v) { 61 if (mListener != null) { 62 mListener.onCancel(this); 63 } 64 } 65 66 public interface OnCancelListener { onCancel(CancellablePreference preference)67 void onCancel(CancellablePreference preference); 68 } 69 70 } 71