143 lines
4.1 KiB
Java
143 lines
4.1 KiB
Java
/*
|
|
* 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.items;
|
|
|
|
import android.content.Context;
|
|
import android.content.res.TypedArray;
|
|
import android.util.AttributeSet;
|
|
import android.util.Log;
|
|
import com.android.setupwizardlib.R;
|
|
import java.util.ArrayList;
|
|
|
|
/** An abstract item hierarchy; provides default implementation for ID and observers. */
|
|
public abstract class AbstractItemHierarchy implements ItemHierarchy {
|
|
|
|
/* static section */
|
|
|
|
private static final String TAG = "AbstractItemHierarchy";
|
|
|
|
/* non-static section */
|
|
|
|
private final ArrayList<Observer> observers = new ArrayList<>();
|
|
private int id = 0;
|
|
|
|
public AbstractItemHierarchy() {}
|
|
|
|
public AbstractItemHierarchy(Context context, AttributeSet attrs) {
|
|
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SuwAbstractItem);
|
|
id = a.getResourceId(R.styleable.SuwAbstractItem_android_id, 0);
|
|
a.recycle();
|
|
}
|
|
|
|
public void setId(int id) {
|
|
this.id = id;
|
|
}
|
|
|
|
public int getId() {
|
|
return id;
|
|
}
|
|
|
|
public int getViewId() {
|
|
return getId();
|
|
}
|
|
|
|
@Override
|
|
public void registerObserver(Observer observer) {
|
|
observers.add(observer);
|
|
}
|
|
|
|
@Override
|
|
public void unregisterObserver(Observer observer) {
|
|
observers.remove(observer);
|
|
}
|
|
|
|
/** @see Observer#onChanged(ItemHierarchy) */
|
|
public void notifyChanged() {
|
|
for (Observer observer : observers) {
|
|
observer.onChanged(this);
|
|
}
|
|
}
|
|
|
|
/** @see Observer#onItemRangeChanged(ItemHierarchy, int, int) */
|
|
public void notifyItemRangeChanged(int position, int itemCount) {
|
|
if (position < 0) {
|
|
Log.w(TAG, "notifyItemRangeChanged: Invalid position=" + position);
|
|
return;
|
|
}
|
|
if (itemCount < 0) {
|
|
Log.w(TAG, "notifyItemRangeChanged: Invalid itemCount=" + itemCount);
|
|
return;
|
|
}
|
|
|
|
for (Observer observer : observers) {
|
|
observer.onItemRangeChanged(this, position, itemCount);
|
|
}
|
|
}
|
|
|
|
/** @see Observer#onItemRangeInserted(ItemHierarchy, int, int) */
|
|
public void notifyItemRangeInserted(int position, int itemCount) {
|
|
if (position < 0) {
|
|
Log.w(TAG, "notifyItemRangeInserted: Invalid position=" + position);
|
|
return;
|
|
}
|
|
if (itemCount < 0) {
|
|
Log.w(TAG, "notifyItemRangeInserted: Invalid itemCount=" + itemCount);
|
|
return;
|
|
}
|
|
|
|
for (Observer observer : observers) {
|
|
observer.onItemRangeInserted(this, position, itemCount);
|
|
}
|
|
}
|
|
|
|
/** @see Observer#onItemRangeMoved(ItemHierarchy, int, int, int) */
|
|
public void notifyItemRangeMoved(int fromPosition, int toPosition, int itemCount) {
|
|
if (fromPosition < 0) {
|
|
Log.w(TAG, "notifyItemRangeMoved: Invalid fromPosition=" + fromPosition);
|
|
return;
|
|
}
|
|
if (toPosition < 0) {
|
|
Log.w(TAG, "notifyItemRangeMoved: Invalid toPosition=" + toPosition);
|
|
return;
|
|
}
|
|
if (itemCount < 0) {
|
|
Log.w(TAG, "notifyItemRangeMoved: Invalid itemCount=" + itemCount);
|
|
return;
|
|
}
|
|
|
|
for (Observer observer : observers) {
|
|
observer.onItemRangeMoved(this, fromPosition, toPosition, itemCount);
|
|
}
|
|
}
|
|
|
|
/** @see Observer#onItemRangeRemoved(ItemHierarchy, int, int) */
|
|
public void notifyItemRangeRemoved(int position, int itemCount) {
|
|
if (position < 0) {
|
|
Log.w(TAG, "notifyItemRangeInserted: Invalid position=" + position);
|
|
return;
|
|
}
|
|
if (itemCount < 0) {
|
|
Log.w(TAG, "notifyItemRangeInserted: Invalid itemCount=" + itemCount);
|
|
return;
|
|
}
|
|
|
|
for (Observer observer : observers) {
|
|
observer.onItemRangeRemoved(this, position, itemCount);
|
|
}
|
|
}
|
|
}
|