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.setupwizardlib; 18 19 import android.content.Context; 20 import android.content.res.TypedArray; 21 import android.graphics.drawable.Drawable; 22 import android.os.Build; 23 import android.support.v7.widget.LinearLayoutManager; 24 import android.support.v7.widget.RecyclerView; 25 import android.util.AttributeSet; 26 import android.util.Log; 27 import android.view.LayoutInflater; 28 import android.view.View; 29 import android.view.ViewGroup; 30 import android.widget.TextView; 31 32 import com.android.setupwizardlib.items.ItemGroup; 33 import com.android.setupwizardlib.items.ItemInflater; 34 import com.android.setupwizardlib.items.RecyclerItemAdapter; 35 import com.android.setupwizardlib.util.DrawableLayoutDirectionHelper; 36 import com.android.setupwizardlib.util.RecyclerViewRequireScrollHelper; 37 import com.android.setupwizardlib.view.HeaderRecyclerView; 38 import com.android.setupwizardlib.view.NavigationBar; 39 40 /** 41 * A setup wizard layout for use with {@link android.support.v7.widget.RecyclerView}. 42 * {@code android:entries} can also be used to specify an 43 * {@link com.android.setupwizardlib.items.ItemHierarchy} to be used with this layout in XML. 44 * 45 * @see SetupWizardItemsLayout 46 */ 47 public class SetupWizardRecyclerLayout extends SetupWizardLayout { 48 49 private static final String TAG = "RecyclerLayout"; 50 51 private RecyclerView.Adapter mAdapter; 52 private RecyclerView mRecyclerView; 53 private View mHeader; 54 55 private DividerItemDecoration mDividerDecoration; 56 private Drawable mDefaultDivider; 57 private Drawable mDivider; 58 private int mDividerInset; 59 60 public SetupWizardRecyclerLayout(Context context) { 61 this(context, 0, 0); 62 } 63 64 public SetupWizardRecyclerLayout(Context context, int template, int containerId) { 65 super(context, template, containerId); 66 init(context, null, 0); 67 } 68 69 public SetupWizardRecyclerLayout(Context context, AttributeSet attrs) { 70 super(context, attrs); 71 init(context, attrs, 0); 72 } 73 74 public SetupWizardRecyclerLayout(Context context, AttributeSet attrs, int defStyleAttr) { 75 super(context, attrs, defStyleAttr); 76 init(context, attrs, defStyleAttr); 77 } 78 79 private void init(Context context, AttributeSet attrs, int defStyleAttr) { 80 final TypedArray a = context.obtainStyledAttributes(attrs, 81 R.styleable.SuwSetupWizardRecyclerItemsLayout, defStyleAttr, 0); 82 final int xml = a.getResourceId( 83 R.styleable.SuwSetupWizardRecyclerItemsLayout_android_entries, 0); 84 if (xml != 0) { 85 final ItemGroup inflated = (ItemGroup) new ItemInflater(context).inflate(xml); 86 mAdapter = new RecyclerItemAdapter(inflated); 87 mAdapter.setHasStableIds(a.getBoolean( 88 R.styleable.SuwSetupWizardRecyclerItemsLayout_suwHasStableIds, false)); 89 setAdapter(mAdapter); 90 } 91 int dividerInset = a.getDimensionPixelSize( 92 R.styleable.SuwSetupWizardRecyclerItemsLayout_suwDividerInset, 0); 93 if (dividerInset == 0) { 94 dividerInset = getResources() 95 .getDimensionPixelSize(R.dimen.suw_items_icon_divider_inset); 96 } 97 setDividerInset(dividerInset); 98 a.recycle(); 99 } 100 101 @Override 102 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 103 super.onLayout(changed, left, top, right, bottom); 104 if (mDivider == null) { 105 // Update divider in case layout direction has just been resolved 106 updateDivider(); 107 } 108 } 109 110 public RecyclerView.Adapter getAdapter() { 111 return mAdapter; 112 } 113 114 public void setAdapter(RecyclerView.Adapter adapter) { 115 mAdapter = adapter; 116 getRecyclerView().setAdapter(adapter); 117 } 118 119 public RecyclerView getRecyclerView() { 120 return mRecyclerView; 121 } 122 123 @Override 124 protected ViewGroup findContainer(int containerId) { 125 if (containerId == 0) { 126 containerId = R.id.suw_recycler_view; 127 } 128 return super.findContainer(containerId); 129 } 130 131 @Override 132 protected void onTemplateInflated() { 133 initRecyclerView((RecyclerView) findViewById(R.id.suw_recycler_view)); 134 } 135 136 protected void initRecyclerView(RecyclerView recyclerView) { 137 mRecyclerView = recyclerView; 138 mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext())); 139 if (mRecyclerView instanceof HeaderRecyclerView) { 140 mHeader = ((HeaderRecyclerView) mRecyclerView).getHeader(); 141 } 142 mDividerDecoration = DividerItemDecoration.getDefault(getContext()); 143 mRecyclerView.addItemDecoration(mDividerDecoration); 144 } 145 146 @Override 147 protected View onInflateTemplate(LayoutInflater inflater, int template) { 148 if (template == 0) { 149 template = R.layout.suw_recycler_template; 150 } 151 return super.onInflateTemplate(inflater, template); 152 } 153 154 @Override 155 protected View findManagedViewById(int id) { 156 if (mHeader != null) { 157 final View view = mHeader.findViewById(id); 158 if (view != null) { 159 return view; 160 } 161 } 162 return super.findViewById(id); 163 } 164 165 @Override 166 public void requireScrollToBottom() { 167 final NavigationBar navigationBar = getNavigationBar(); 168 final RecyclerView recyclerView = getRecyclerView(); 169 if (navigationBar != null && recyclerView != null) { 170 RecyclerViewRequireScrollHelper.requireScroll(navigationBar, recyclerView); 171 } else { 172 Log.e(TAG, "Both suw_layout_navigation_bar and suw_recycler_view must exist in" 173 + " the template to require scrolling."); 174 } 175 } 176 177 /** 178 * Sets the start inset of the divider. This will use the default divider drawable set in the 179 * theme and inset it {@code inset} pixels to the right (or left in RTL layouts). 180 * 181 * @param inset The number of pixels to inset on the "start" side of the list divider. Typically 182 * this will be either {@code @dimen/suw_items_icon_divider_inset} or 183 * {@code @dimen/suw_items_text_divider_inset}. 184 */ 185 public void setDividerInset(int inset) { 186 mDividerInset = inset; 187 updateDivider(); 188 } 189 190 public int getDividerInset() { 191 return mDividerInset; 192 } 193 194 private void updateDivider() { 195 boolean shouldUpdate = true; 196 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { 197 shouldUpdate = isLayoutDirectionResolved(); 198 } 199 if (shouldUpdate) { 200 if (mDefaultDivider == null) { 201 mDefaultDivider = mDividerDecoration.getDivider(); 202 } 203 mDivider = DrawableLayoutDirectionHelper.createRelativeInsetDrawable(mDefaultDivider, 204 mDividerInset /* start */, 0 /* top */, 0 /* end */, 0 /* bottom */, this); 205 mDividerDecoration.setDivider(mDivider); 206 } 207 } 208 209 public Drawable getDivider() { 210 return mDivider; 211 } 212 } 213
