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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.setupwizardlib;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.setupwizardlib.items.ItemGroup;
import com.android.setupwizardlib.items.ItemInflater;
import com.android.setupwizardlib.items.RecyclerItemAdapter;
import com.android.setupwizardlib.util.DrawableLayoutDirectionHelper;
import com.android.setupwizardlib.util.RecyclerViewRequireScrollHelper;
import com.android.setupwizardlib.view.HeaderRecyclerView;
import com.android.setupwizardlib.view.NavigationBar;
/**
* A setup wizard layout for use with {@link android.support.v7.widget.RecyclerView}.
* {@code android:entries} can also be used to specify an
* {@link com.android.setupwizardlib.items.ItemHierarchy} to be used with this layout in XML.
*
* @see SetupWizardItemsLayout
*/
public class SetupWizardRecyclerLayout extends SetupWizardLayout {
private static final String TAG = "RecyclerLayout";
private RecyclerView.Adapter mAdapter;
private RecyclerView mRecyclerView;
private View mHeader;
private DividerItemDecoration mDividerDecoration;
private Drawable mDefaultDivider;
private Drawable mDivider;
private int mDividerInset;
public SetupWizardRecyclerLayout(Context context) {
this(context, 0, 0);
}
public SetupWizardRecyclerLayout(Context context, int template, int containerId) {
super(context, template, containerId);
init(context, null, 0);
}
public SetupWizardRecyclerLayout(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs, 0);
}
public SetupWizardRecyclerLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs, defStyleAttr);
}
private void init(Context context, AttributeSet attrs, int defStyleAttr) {
final TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.SuwSetupWizardRecyclerLayout, defStyleAttr, 0);
final int xml = a.getResourceId(
R.styleable.SuwSetupWizardRecyclerLayout_android_entries, 0);
if (xml != 0) {
final ItemGroup inflated = (ItemGroup) new ItemInflater(context).inflate(xml);
mAdapter = new RecyclerItemAdapter(inflated);
mAdapter.setHasStableIds(a.getBoolean(
R.styleable.SuwSetupWizardRecyclerLayout_suwHasStableIds, false));
setAdapter(mAdapter);
}
int dividerInset = a.getDimensionPixelSize(
R.styleable.SuwSetupWizardRecyclerLayout_suwDividerInset, 0);
if (dividerInset == 0) {
dividerInset = getResources()
.getDimensionPixelSize(R.dimen.suw_items_icon_divider_inset);
}
setDividerInset(dividerInset);
a.recycle();
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
if (mDivider == null) {
// Update divider in case layout direction has just been resolved
updateDivider();
}
}
public RecyclerView.Adapter getAdapter() {
return mAdapter;
}
public void setAdapter(RecyclerView.Adapter adapter) {
mAdapter = adapter;
getRecyclerView().setAdapter(adapter);
}
public RecyclerView getRecyclerView() {
return mRecyclerView;
}
@Override
protected ViewGroup findContainer(int containerId) {
if (containerId == 0) {
containerId = R.id.suw_recycler_view;
}
return super.findContainer(containerId);
}
@Override
protected void onTemplateInflated() {
initRecyclerView((RecyclerView) findViewById(R.id.suw_recycler_view));
}
protected void initRecyclerView(RecyclerView recyclerView) {
mRecyclerView = recyclerView;
mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
if (mRecyclerView instanceof HeaderRecyclerView) {
mHeader = ((HeaderRecyclerView) mRecyclerView).getHeader();
}
mDividerDecoration = new DividerItemDecoration(getContext());
mRecyclerView.addItemDecoration(mDividerDecoration);
}
@Override
protected View onInflateTemplate(LayoutInflater inflater, int template) {
if (template == 0) {
template = R.layout.suw_recycler_template;
}
return super.onInflateTemplate(inflater, template);
}
@Override
protected View findManagedViewById(int id) {
if (mHeader != null) {
final View view = mHeader.findViewById(id);
if (view != null) {
return view;
}
}
return super.findViewById(id);
}
@Override
public void requireScrollToBottom() {
final NavigationBar navigationBar = getNavigationBar();
final RecyclerView recyclerView = getRecyclerView();
if (navigationBar != null && recyclerView != null) {
RecyclerViewRequireScrollHelper.requireScroll(navigationBar, recyclerView);
} else {
Log.e(TAG, "Both suw_layout_navigation_bar and suw_recycler_view must exist in"
+ " the template to require scrolling.");
}
}
/**
* Sets the start inset of the divider. This will use the default divider drawable set in the
* theme and inset it {@code inset} pixels to the right (or left in RTL layouts).
*
* @param inset The number of pixels to inset on the "start" side of the list divider. Typically
* this will be either {@code @dimen/suw_items_icon_divider_inset} or
* {@code @dimen/suw_items_text_divider_inset}.
*/
public void setDividerInset(int inset) {
mDividerInset = inset;
updateDivider();
}
public int getDividerInset() {
return mDividerInset;
}
private void updateDivider() {
boolean shouldUpdate = true;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
shouldUpdate = isLayoutDirectionResolved();
}
if (shouldUpdate) {
if (mDefaultDivider == null) {
mDefaultDivider = mDividerDecoration.getDivider();
}
mDivider = DrawableLayoutDirectionHelper.createRelativeInsetDrawable(mDefaultDivider,
mDividerInset /* start */, 0 /* top */, 0 /* end */, 0 /* bottom */, this);
mDividerDecoration.setDivider(mDivider);
}
}
public Drawable getDivider() {
return mDivider;
}
}
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