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      1 /*
      2  * Copyright (C) 2017 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.systemui.qs;
     17 
     18 import android.support.annotation.Nullable;
     19 import android.view.View;
     20 
     21 /**
     22  * The bottom footer of the quick settings panel.
     23  */
     24 public interface QSFooter {
     25     /**
     26      * Sets the given {@link QSPanel} to be the one that will display the quick settings.
     27      */
     28     void setQSPanel(@Nullable QSPanel panel);
     29 
     30     /**
     31      * Sets whether or not the footer should be visible.
     32      *
     33      * @param visibility One of {@link View#VISIBLE}, {@link View#INVISIBLE} or {@link View#GONE}.
     34      * @see View#setVisibility(int)
     35      */
     36     void setVisibility(int visibility);
     37 
     38     /**
     39      * Sets whether the footer is in an expanded state.
     40      */
     41     void setExpanded(boolean expanded);
     42 
     43     /**
     44      * Returns the full height of the footer.
     45      */
     46     int getHeight();
     47 
     48     /**
     49      * Sets the percentage amount that the quick settings has been expanded.
     50      *
     51      * @param expansion A value from 1 to 0 that indicates how much the quick settings have been
     52      *                  expanded. 1 is fully expanded.
     53      */
     54     void setExpansion(float expansion);
     55 
     56     /**
     57      * Sets whether or not this footer should set itself to listen for changes in any callbacks
     58      * that it has implemented.
     59      */
     60     void setListening(boolean listening);
     61 
     62     /**
     63      * Sets whether or not the keyguard is currently being shown.
     64      */
     65     void setKeyguardShowing(boolean keyguardShowing);
     66 
     67     /**
     68      * Sets the {@link android.view.View.OnClickListener to be used on elements that expend QS.
     69      */
     70     void setExpandClickListener(View.OnClickListener onClickListener);
     71 
     72     default void disable(int state1, int state2, boolean animate) {}
     73 }
     74