Garfield, Tan | 171e6f5 | 2016-07-29 14:44:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | |
Steve McKay | b70665f | 2016-09-06 15:35:19 -0700 | [diff] [blame] | 17 | package com.android.documentsui.sorting; |
Garfield, Tan | 171e6f5 | 2016-07-29 14:44:58 -0700 | [diff] [blame] | 18 | |
| 19 | import android.animation.AnimatorInflater; |
| 20 | import android.animation.LayoutTransition; |
| 21 | import android.animation.ObjectAnimator; |
| 22 | import android.annotation.AnimatorRes; |
| 23 | import android.annotation.StringRes; |
| 24 | import android.content.Context; |
| 25 | import android.util.AttributeSet; |
| 26 | import android.view.Gravity; |
| 27 | import android.view.View; |
| 28 | import android.widget.ImageView; |
| 29 | import android.widget.LinearLayout; |
| 30 | import android.widget.TextView; |
| 31 | |
| 32 | import com.android.documentsui.R; |
| 33 | import com.android.documentsui.sorting.SortDimension; |
| 34 | |
| 35 | /** |
| 36 | * A clickable, sortable table header cell layout. |
| 37 | * |
| 38 | * It updates its display when it binds to {@link SortDimension} and changes the status of sorting |
| 39 | * when it's clicked. |
| 40 | */ |
| 41 | public class HeaderCell extends LinearLayout { |
| 42 | |
| 43 | private static final long ANIMATION_DURATION = 100; |
| 44 | |
| 45 | private @SortDimension.SortDirection int mCurDirection = SortDimension.SORT_DIRECTION_NONE; |
| 46 | |
| 47 | public HeaderCell(Context context) { |
| 48 | this(context, null); |
| 49 | } |
| 50 | |
| 51 | public HeaderCell(Context context, AttributeSet attrs) { |
| 52 | super(context, attrs); |
| 53 | |
| 54 | LayoutTransition transition = getLayoutTransition(); |
| 55 | transition.setDuration(ANIMATION_DURATION); |
| 56 | transition.setStartDelay(LayoutTransition.CHANGE_APPEARING, 0); |
| 57 | transition.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 0); |
| 58 | transition.setStartDelay(LayoutTransition.CHANGING, 0); |
| 59 | } |
| 60 | |
| 61 | void onBind(SortDimension dimension) { |
| 62 | setVisibility(dimension.getVisibility()); |
| 63 | |
| 64 | if (dimension.getVisibility() == View.VISIBLE) { |
| 65 | TextView label = (TextView) findViewById(R.id.label); |
| 66 | label.setText(dimension.getLabelId()); |
| 67 | switch (dimension.getDataType()) { |
| 68 | case SortDimension.DATA_TYPE_NUMBER: |
| 69 | setDataTypeNumber(label); |
| 70 | break; |
| 71 | case SortDimension.DATA_TYPE_STRING: |
| 72 | setDataTypeString(label); |
| 73 | break; |
| 74 | default: |
| 75 | throw new IllegalArgumentException( |
| 76 | "Unknown column data type: " + dimension.getDataType() + "."); |
| 77 | } |
| 78 | |
| 79 | if (mCurDirection != dimension.getSortDirection()) { |
| 80 | ImageView arrow = (ImageView) findViewById(R.id.sort_arrow); |
| 81 | switch (dimension.getSortDirection()) { |
| 82 | case SortDimension.SORT_DIRECTION_NONE: |
| 83 | arrow.setVisibility(View.GONE); |
| 84 | break; |
| 85 | case SortDimension.SORT_DIRECTION_ASCENDING: |
| 86 | showArrow(arrow, R.animator.arrow_rotate_up, |
| 87 | R.string.sort_direction_ascending); |
| 88 | break; |
| 89 | case SortDimension.SORT_DIRECTION_DESCENDING: |
| 90 | showArrow(arrow, R.animator.arrow_rotate_down, |
| 91 | R.string.sort_direction_descending); |
| 92 | break; |
| 93 | default: |
| 94 | throw new IllegalArgumentException( |
| 95 | "Unknown sort direction: " + dimension.getSortDirection() + "."); |
| 96 | } |
| 97 | |
| 98 | mCurDirection = dimension.getSortDirection(); |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | private void showArrow( |
| 104 | ImageView arrow, @AnimatorRes int anim, @StringRes int contentDescriptionId) { |
| 105 | arrow.setVisibility(View.VISIBLE); |
| 106 | |
| 107 | CharSequence description = getContext().getString(contentDescriptionId); |
| 108 | arrow.setContentDescription(description); |
| 109 | |
| 110 | ObjectAnimator animator = |
| 111 | (ObjectAnimator) AnimatorInflater.loadAnimator(getContext(), anim); |
Garfield, Tan | 61f564b | 2016-08-16 13:36:15 -0700 | [diff] [blame] | 112 | animator.setTarget(arrow.getDrawable().mutate()); |
Garfield, Tan | 171e6f5 | 2016-07-29 14:44:58 -0700 | [diff] [blame] | 113 | animator.start(); |
| 114 | } |
| 115 | |
| 116 | private void setDataTypeNumber(View label) { |
| 117 | label.setTextAlignment(View.TEXT_ALIGNMENT_VIEW_END); |
| 118 | setGravity(Gravity.CENTER_VERTICAL | Gravity.END); |
| 119 | } |
| 120 | |
| 121 | private void setDataTypeString(View label) { |
| 122 | label.setTextAlignment(View.TEXT_ALIGNMENT_VIEW_START); |
| 123 | setGravity(Gravity.CENTER_VERTICAL | Gravity.START); |
| 124 | } |
| 125 | } |