ab45bdf67a
Propagate the recycler view notifications notifyItem{Changed/Removed/Inserted} in ItemHierarchy so that recycler view animations can be used with ItemHierarchy more easily. Test: ./gradlew connectedAndroidTest test Bug: 36388000 Change-Id: I583952044995b174baec2610422611f6d40a9a11
158 lines
4.5 KiB
Java
158 lines
4.5 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.setupwizardlib.items;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.util.AttributeSet;
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import android.util.Log;
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import com.android.setupwizardlib.R;
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import java.util.ArrayList;
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/**
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* An abstract item hierarchy; provides default implementation for ID and observers.
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*/
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public abstract class AbstractItemHierarchy implements ItemHierarchy {
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/* static section */
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private static final String TAG = "AbstractItemHierarchy";
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/* non-static section */
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private ArrayList<Observer> mObservers = new ArrayList<>();
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private int mId = 0;
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public AbstractItemHierarchy() {
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}
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public AbstractItemHierarchy(Context context, AttributeSet attrs) {
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SuwAbstractItem);
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mId = a.getResourceId(R.styleable.SuwAbstractItem_android_id, 0);
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a.recycle();
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}
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public void setId(int id) {
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mId = id;
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}
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public int getId() {
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return mId;
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}
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public int getViewId() {
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return getId();
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}
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@Override
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public void registerObserver(Observer observer) {
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mObservers.add(observer);
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}
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@Override
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public void unregisterObserver(Observer observer) {
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mObservers.remove(observer);
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}
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/**
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* @see Observer#onChanged(ItemHierarchy)
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*/
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public void notifyChanged() {
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for (Observer observer : mObservers) {
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observer.onChanged(this);
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}
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}
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/**
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* @see Observer#onItemRangeChanged(ItemHierarchy, int, int)
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*/
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public void notifyItemRangeChanged(int position, int itemCount) {
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if (position < 0) {
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Log.w(TAG, "notifyItemRangeChanged: Invalid position=" + position);
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return;
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}
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if (itemCount < 0) {
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Log.w(TAG, "notifyItemRangeChanged: Invalid itemCount=" + itemCount);
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return;
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}
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for (Observer observer : mObservers) {
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observer.onItemRangeChanged(this, position, itemCount);
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}
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}
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/**
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* @see Observer#onItemRangeInserted(ItemHierarchy, int, int)
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*/
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public void notifyItemRangeInserted(int position, int itemCount) {
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if (position < 0) {
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Log.w(TAG, "notifyItemRangeInserted: Invalid position=" + position);
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return;
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}
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if (itemCount < 0) {
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Log.w(TAG, "notifyItemRangeInserted: Invalid itemCount=" + itemCount);
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return;
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}
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for (Observer observer : mObservers) {
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observer.onItemRangeInserted(this, position, itemCount);
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}
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}
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/**
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* @see Observer#onItemRangeMoved(ItemHierarchy, int, int, int)
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*/
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public void notifyItemRangeMoved(int fromPosition, int toPosition, int itemCount) {
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if (fromPosition < 0) {
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Log.w(TAG, "notifyItemRangeMoved: Invalid fromPosition=" + fromPosition);
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return;
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}
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if (toPosition < 0) {
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Log.w(TAG, "notifyItemRangeMoved: Invalid toPosition=" + toPosition);
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return;
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}
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if (itemCount < 0) {
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Log.w(TAG, "notifyItemRangeMoved: Invalid itemCount=" + itemCount);
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return;
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}
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for (Observer observer : mObservers) {
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observer.onItemRangeMoved(this, fromPosition, toPosition, itemCount);
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}
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}
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/**
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* @see Observer#onItemRangeRemoved(ItemHierarchy, int, int)
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*/
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public void notifyItemRangeRemoved(int position, int itemCount) {
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if (position < 0) {
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Log.w(TAG, "notifyItemRangeInserted: Invalid position=" + position);
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return;
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}
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if (itemCount < 0) {
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Log.w(TAG, "notifyItemRangeInserted: Invalid itemCount=" + itemCount);
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return;
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}
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for (Observer observer : mObservers) {
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observer.onItemRangeRemoved(this, position, itemCount);
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}
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}
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}
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