1 /* 2 * Copyright (C) 2018 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.launcher3.allapps; 17 18 import android.graphics.Rect; 19 import android.view.animation.Interpolator; 20 21 import com.android.launcher3.DeviceProfile; 22 import com.android.launcher3.anim.PropertySetter; 23 24 /** 25 * A abstract representation of a row in all-apps view 26 */ 27 public interface FloatingHeaderRow { 28 29 FloatingHeaderRow[] NO_ROWS = new FloatingHeaderRow[0]; 30 setup(FloatingHeaderView parent, FloatingHeaderRow[] allRows, boolean tabsHidden)31 void setup(FloatingHeaderView parent, FloatingHeaderRow[] allRows, boolean tabsHidden); 32 setInsets(Rect insets, DeviceProfile grid)33 void setInsets(Rect insets, DeviceProfile grid); 34 getExpectedHeight()35 int getExpectedHeight(); 36 37 /** 38 * Returns true if the row should draw based on its current position and layout. 39 */ shouldDraw()40 boolean shouldDraw(); 41 42 /** 43 * Returns true if the view has anything worth drawing. This is different than 44 * {@link #shouldDraw()} as this is called earlier in the layout to determine the view 45 * position. 46 */ hasVisibleContent()47 boolean hasVisibleContent(); 48 setContentVisibility(boolean hasHeaderExtra, boolean hasContent, PropertySetter setter, Interpolator fadeInterpolator)49 void setContentVisibility(boolean hasHeaderExtra, boolean hasContent, 50 PropertySetter setter, Interpolator fadeInterpolator); 51 52 /** 53 * Scrolls the content vertically. 54 */ setVerticalScroll(int scroll, boolean isScrolledOut)55 void setVerticalScroll(int scroll, boolean isScrolledOut); 56 getTypeClass()57 Class<? extends FloatingHeaderRow> getTypeClass(); 58 } 59