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 17 package com.android.dialer.widget; 18 19 import android.content.Context; 20 import android.content.res.ColorStateList; 21 import android.content.res.Resources.Theme; 22 import android.support.annotation.ColorRes; 23 import android.support.annotation.Nullable; 24 import android.support.annotation.StringRes; 25 import android.util.AttributeSet; 26 import android.view.LayoutInflater; 27 import android.view.View; 28 import android.widget.ImageView; 29 import android.widget.LinearLayout; 30 import android.widget.TextView; 31 32 public class EmptyContentView extends LinearLayout implements View.OnClickListener { 33 34 /** Listener to call when action button is clicked. */ 35 public interface OnEmptyViewActionButtonClickedListener { onEmptyViewActionButtonClicked()36 void onEmptyViewActionButtonClicked(); 37 } 38 39 public static final int NO_LABEL = 0; 40 public static final int NO_IMAGE = 0; 41 42 private ImageView imageView; 43 private TextView descriptionView; 44 private TextView actionView; 45 private OnEmptyViewActionButtonClickedListener onActionButtonClickedListener; 46 47 private @StringRes int actionLabel; 48 EmptyContentView(Context context)49 public EmptyContentView(Context context) { 50 this(context, null); 51 } 52 EmptyContentView(Context context, AttributeSet attrs)53 public EmptyContentView(Context context, AttributeSet attrs) { 54 this(context, attrs, 0); 55 } 56 EmptyContentView(Context context, AttributeSet attrs, int defStyleAttr)57 public EmptyContentView(Context context, AttributeSet attrs, int defStyleAttr) { 58 this(context, attrs, defStyleAttr, 0); 59 } 60 EmptyContentView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)61 public EmptyContentView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 62 super(context, attrs, defStyleAttr, defStyleRes); 63 inflateLayout(); 64 65 // Don't let touches fall through the empty view. 66 setClickable(true); 67 imageView = (ImageView) findViewById(R.id.empty_list_view_image); 68 descriptionView = (TextView) findViewById(R.id.empty_list_view_message); 69 actionView = (TextView) findViewById(R.id.empty_list_view_action); 70 actionView.setOnClickListener(this); 71 } 72 setDescription(int resourceId)73 public void setDescription(int resourceId) { 74 if (resourceId == NO_LABEL) { 75 descriptionView.setText(null); 76 descriptionView.setVisibility(View.GONE); 77 } else { 78 descriptionView.setText(resourceId); 79 descriptionView.setVisibility(View.VISIBLE); 80 } 81 } 82 setImage(int resourceId)83 public void setImage(int resourceId) { 84 if (resourceId == NO_LABEL) { 85 imageView.setImageDrawable(null); 86 imageView.setVisibility(View.GONE); 87 } else { 88 imageView.setImageResource(resourceId); 89 imageView.setVisibility(View.VISIBLE); 90 } 91 } 92 setImageTint(@olorRes int color, @Nullable Theme theme)93 public void setImageTint(@ColorRes int color, @Nullable Theme theme) { 94 imageView.setImageTintList( 95 (ColorStateList.valueOf(getContext().getResources().getColor(color, theme)))); 96 } 97 setActionLabel(@tringRes int resourceId)98 public void setActionLabel(@StringRes int resourceId) { 99 actionLabel = resourceId; 100 if (resourceId == NO_LABEL) { 101 actionView.setText(null); 102 actionView.setVisibility(View.GONE); 103 } else { 104 actionView.setText(resourceId); 105 actionView.setVisibility(View.VISIBLE); 106 } 107 } 108 getActionLabel()109 public @StringRes int getActionLabel() { 110 return actionLabel; 111 } 112 isShowingContent()113 public boolean isShowingContent() { 114 return imageView.getVisibility() == View.VISIBLE 115 || descriptionView.getVisibility() == View.VISIBLE 116 || actionView.getVisibility() == View.VISIBLE; 117 } 118 setActionClickedListener(OnEmptyViewActionButtonClickedListener listener)119 public void setActionClickedListener(OnEmptyViewActionButtonClickedListener listener) { 120 onActionButtonClickedListener = listener; 121 } 122 123 @Override onClick(View v)124 public void onClick(View v) { 125 if (onActionButtonClickedListener != null) { 126 onActionButtonClickedListener.onEmptyViewActionButtonClicked(); 127 } 128 } 129 inflateLayout()130 protected void inflateLayout() { 131 setOrientation(LinearLayout.VERTICAL); 132 final LayoutInflater inflater = 133 (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 134 inflater.inflate(R.layout.empty_content_view, this); 135 } 136 } 137