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package com.taobao.weex.ui.view;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
import com.taobao.weex.WXEnvironment;
import com.taobao.weex.utils.WXLogUtils;
import java.util.ArrayList;
import java.util.List;
public class WXCirclePageAdapter extends PagerAdapter {
/**
* Number of sub item
*/
private int realCount;
/**
* Subviews
*/
private List<View> views;
public WXCirclePageAdapter(List<View> views) {
super();
this.views = views;
this.realCount = views.size();
}
public WXCirclePageAdapter() {
super();
this.views = new ArrayList<>();
this.realCount = 0;
}
public void addPageView(View view) {
if (WXEnvironment.isApkDebugable()) {
WXLogUtils.d("onPageSelected >>>> addPageView");
}
if (views == null) {
views = new ArrayList<>();
}
views.add(view);
this.realCount = views.size();
}
public void removePageView(View view) {
if (WXEnvironment.isApkDebugable()) {
WXLogUtils.d("onPageSelected >>>> removePageView");
}
if (views == null) {
views = new ArrayList<>();
}
views.remove(view);
this.realCount = views.size();
}
public void replacePageView(View oldView, View newView) {
if (WXEnvironment.isApkDebugable()) {
WXLogUtils.d("onPageSelected >>>> replacePageView");
}
if (views == null) {
views = new ArrayList<>();
}
int index = views.indexOf(oldView);
views.remove(index);
views.add(index, newView);
this.realCount = views.size();
}
@Override
public int getCount() {
// if count less than 3,the circle doesn't work as expected.
int count = getRealCount();
if (count > 2) {
return count * 110;
} else {
return count;
}
}
public int getRealCount() {
return realCount;
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
View pageView = null;
try {
pageView = views.get(position % getRealCount());
if (WXEnvironment.isApkDebugable()) {
WXLogUtils.d("onPageSelected >>>> instantiateItem >>>>> position:" + position + ",position % getRealCount()" + position % getRealCount());
}
if (pageView.getParent() == null) {
container.addView(pageView);
} else {
((ViewGroup) pageView.getParent()).removeView(pageView);
container.addView(pageView);
}
} catch (Exception e) {
WXLogUtils.e("[CirclePageAdapter] instantiateItem: ", e);
}
return pageView;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
if (WXEnvironment.isApkDebugable()) {
WXLogUtils.d("onPageSelected >>>> destroyItem >>>>> position:" + position);
}
// container.removeView((View) object);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
@Override
public int getItemPosition(Object object) {
int position = views.indexOf(object);
return position == -1 ? POSITION_NONE : position;
}
public List<View> getViews(){
return views;
}
}