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      1 /*
      2  * Copyright (C) 2014 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.systemui.statusbar;
     18 
     19 import android.annotation.ColorInt;
     20 import android.annotation.StringRes;
     21 import android.content.Context;
     22 import android.content.res.Configuration;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 import android.widget.TextView;
     26 
     27 import com.android.systemui.R;
     28 import com.android.systemui.statusbar.notification.row.StackScrollerDecorView;
     29 import com.android.systemui.statusbar.notification.stack.ExpandableViewState;
     30 
     31 public class EmptyShadeView extends StackScrollerDecorView {
     32 
     33     private TextView mEmptyText;
     34     private @StringRes int mText = R.string.empty_shade_text;
     35 
     36     public EmptyShadeView(Context context, AttributeSet attrs) {
     37         super(context, attrs);
     38     }
     39 
     40     @Override
     41     protected void onConfigurationChanged(Configuration newConfig) {
     42         super.onConfigurationChanged(newConfig);
     43         mEmptyText.setText(mText);
     44     }
     45 
     46     @Override
     47     protected View findContentView() {
     48         return findViewById(R.id.no_notifications);
     49     }
     50 
     51     @Override
     52     protected View findSecondaryView() {
     53         return null;
     54     }
     55 
     56     public void setTextColor(@ColorInt int color) {
     57         mEmptyText.setTextColor(color);
     58     }
     59 
     60     public void setText(@StringRes int text) {
     61         mText = text;
     62         mEmptyText.setText(mText);
     63     }
     64 
     65     public int getTextResource() {
     66         return mText;
     67     }
     68 
     69     @Override
     70     protected void onFinishInflate() {
     71         super.onFinishInflate();
     72         mEmptyText = (TextView) findContentView();
     73     }
     74 
     75     @Override
     76     public ExpandableViewState createExpandableViewState() {
     77         return new EmptyShadeViewState();
     78     }
     79 
     80     public class EmptyShadeViewState extends ExpandableViewState {
     81         @Override
     82         public void applyToView(View view) {
     83             super.applyToView(view);
     84             if (view instanceof EmptyShadeView) {
     85                 EmptyShadeView emptyShadeView = (EmptyShadeView) view;
     86                 boolean visible = this.clipTopAmount <= mEmptyText.getPaddingTop() * 0.6f;
     87                 emptyShadeView.setContentVisible(visible && emptyShadeView.isVisible());
     88             }
     89         }
     90     }
     91 }
     92