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/*
* Copyright (C) 2013 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.gallery3d.ingest.adapter;
import android.content.Context;
import android.mtp.MtpObjectInfo;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.gallery3d.R;
import com.android.gallery3d.ingest.MtpDeviceIndex;
import com.android.gallery3d.ingest.MtpDeviceIndex.SortOrder;
import com.android.gallery3d.ingest.ui.MtpFullscreenView;
public class MtpPagerAdapter extends PagerAdapter {
private LayoutInflater mInflater;
private int mGeneration = 0;
private CheckBroker mBroker;
private MtpDeviceIndex mModel;
private SortOrder mSortOrder = SortOrder.Descending;
private MtpFullscreenView mReusableView = null;
public MtpPagerAdapter(Context context, CheckBroker broker) {
super();
mInflater = LayoutInflater.from(context);
mBroker = broker;
}
public void setMtpDeviceIndex(MtpDeviceIndex index) {
mModel = index;
notifyDataSetChanged();
}
@Override
public int getCount() {
return mModel != null ? mModel.sizeWithoutLabels() : 0;
}
@Override
public void notifyDataSetChanged() {
mGeneration++;
super.notifyDataSetChanged();
}
public int translatePositionWithLabels(int position) {
if (mModel == null) return -1;
return mModel.getPositionWithoutLabelsFromPosition(position, mSortOrder);
}
@Override
public void finishUpdate(ViewGroup container) {
mReusableView = null;
super.finishUpdate(container);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
MtpFullscreenView v = (MtpFullscreenView)object;
container.removeView(v);
mBroker.unregisterOnCheckedChangeListener(v);
mReusableView = v;
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
MtpFullscreenView v;
if (mReusableView != null) {
v = mReusableView;
mReusableView = null;
} else {
v = (MtpFullscreenView) mInflater.inflate(R.layout.ingest_fullsize, container, false);
}
MtpObjectInfo i = mModel.getWithoutLabels(position, mSortOrder);
v.getImageView().setMtpDeviceAndObjectInfo(mModel.getDevice(), i, mGeneration);
v.setPositionAndBroker(position, mBroker);
container.addView(v);
return v;
}
}
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