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/*
* The MIT License (MIT)
*
* Copyright (c) 2012-2014 lacolaco.net
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.lacolaco.smileessence.view.adapter;
import android.os.Bundle;
import android.support.v13.app.FragmentPagerAdapter;
import net.lacolaco.smileessence.activity.MainActivity;
import net.lacolaco.smileessence.logging.Logger;
import net.lacolaco.smileessence.view.page.PageFragment;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class PageListAdapter extends FragmentPagerAdapter {
// ------------------------------ FIELDS ------------------------------
private final List<PageInfo> pages = new ArrayList<>();
private final Map<Integer, WeakReference<PageFragment>> fragmentCache = new HashMap<>();
// --------------------------- FragmentPagerAdapter ---------------------------
public PageListAdapter(MainActivity _activity) {
super(_activity.getFragmentManager());
}
@Override
public synchronized PageFragment getItem(int position) {
PageFragment pf;
PageInfo info = pages.get(position);
try {
pf = info.getFragmentClass().newInstance();
} catch (Exception e) {
Logger.error("should not happen: fragmentClass is private or Android is broken?");
e.printStackTrace();
throw new RuntimeException(e);
}
pf.setArguments(info.getArgs());
fragmentCache.put(position, new WeakReference<>(pf));
return pf;
}
public synchronized PageFragment getCachedFragment(int pos) {
WeakReference<PageFragment> wpf = fragmentCache.get(pos);
if (wpf == null) {
return null;
} else {
return wpf.get();
}
}
@Override
public synchronized int getCount() {
return pages.size();
}
// ------------------------ INTERFACE METHODS ------------------------
// -------------------------- OTHER METHODS --------------------------
public void addPage(Class<? extends PageFragment> klass, String name, Bundle args) {
this.addPage(klass, name, args, true);
}
public void addPage(Class<? extends PageFragment> klass, String name, Bundle args, boolean notifyChanged) {
pages.add(new PageInfo(klass, name, args));
if (notifyChanged) notifyDataSetChanged();
}
public synchronized boolean removePage(int position) {
//if (removePageWithoutNotify(position)) {
// refreshListNavigation();
// return true;
//}
return pages.remove(position) != null; // TODO
}
public String getName(int pos) {
return pages.get(pos).getName();
}
@Deprecated
public int getIndex(Class<? extends PageFragment> fragmentClass) {
for (int i = 0; i < pages.size(); ++i) {
if (pages.get(i).getFragmentClass() == fragmentClass) {
return i;
}
}
return -1;
}
private static final class PageInfo {
private final Class<? extends PageFragment> fragmentClass;
private final Bundle args;
private final String name;
PageInfo(Class<? extends PageFragment> _fragmentClass, String _name, Bundle _args) {
fragmentClass = _fragmentClass;
name = _name;
args = _args;
}
public Class<? extends PageFragment> getFragmentClass() {
return fragmentClass;
}
public String getName() {
return name;
}
public Bundle getArgs() {
return args;
}
}
}
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