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package org.wordpress.android.ui.reader.adapters;
import android.content.Context;
import android.os.AsyncTask;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.TextView;
import org.wordpress.android.R;
import org.wordpress.android.datasets.ReaderTagTable;
import org.wordpress.android.models.ReaderTag;
import org.wordpress.android.models.ReaderTagList;
import org.wordpress.android.ui.reader.ReaderInterfaces;
import org.wordpress.android.ui.reader.actions.ReaderActions;
import org.wordpress.android.ui.reader.actions.ReaderTagActions;
import org.wordpress.android.ui.reader.utils.ReaderUtils;
import org.wordpress.android.util.AppLog;
import org.wordpress.android.util.AppLog.T;
import org.wordpress.android.util.NetworkUtils;
import org.wordpress.android.util.ToastUtils;
import java.lang.ref.WeakReference;
public class ReaderTagAdapter extends RecyclerView.Adapter<ReaderTagAdapter.TagViewHolder> {
public interface TagDeletedListener {
void onTagDeleted(ReaderTag tag);
}
private final WeakReference<Context> mWeakContext;
private final ReaderTagList mTags = new ReaderTagList();
private TagDeletedListener mTagDeletedListener;
private ReaderInterfaces.DataLoadedListener mDataLoadedListener;
public ReaderTagAdapter(Context context) {
super();
setHasStableIds(true);
mWeakContext = new WeakReference<>(context);
}
public void setTagDeletedListener(TagDeletedListener listener) {
mTagDeletedListener = listener;
}
public void setDataLoadedListener(ReaderInterfaces.DataLoadedListener listener) {
mDataLoadedListener = listener;
}
private boolean hasContext() {
return (getContext() != null);
}
private Context getContext() {
return mWeakContext.get();
}
public void refresh() {
if (mIsTaskRunning) {
AppLog.w(T.READER, "tag task is already running");
return;
}
new LoadTagsTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
}
@Override
public int getItemCount() {
return mTags.size();
}
public boolean isEmpty() {
return (getItemCount() == 0);
}
@Override
public long getItemId(int position) {
return mTags.get(position).getTagSlug().hashCode();
}
@Override
public TagViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.reader_listitem_tag, parent, false);
return new TagViewHolder(view);
}
@Override
public void onBindViewHolder(TagViewHolder holder, int position) {
final ReaderTag tag = mTags.get(position);
holder.txtTagName.setText(tag.getLabel());
holder.btnRemove.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
performDeleteTag(tag);
}
});
}
private void performDeleteTag(@NonNull ReaderTag tag) {
if (!NetworkUtils.checkConnection(getContext())) {
return;
}
ReaderActions.ActionListener actionListener = new ReaderActions.ActionListener() {
@Override
public void onActionResult(boolean succeeded) {
if (!succeeded && hasContext()) {
ToastUtils.showToast(getContext(), R.string.reader_toast_err_remove_tag);
refresh();
}
}
};
boolean success = ReaderTagActions.deleteTag(tag, actionListener);
if (success) {
int index = mTags.indexOfTagName(tag.getTagSlug());
if (index > -1) {
mTags.remove(index);
notifyItemRemoved(index);
}
if (mTagDeletedListener != null) {
mTagDeletedListener.onTagDeleted(tag);
}
}
}
class TagViewHolder extends RecyclerView.ViewHolder {
private final TextView txtTagName;
private final ImageButton btnRemove;
public TagViewHolder(View view) {
super(view);
txtTagName = (TextView) view.findViewById(R.id.text_topic);
btnRemove = (ImageButton) view.findViewById(R.id.btn_remove);
ReaderUtils.setBackgroundToRoundRipple(btnRemove);
}
}
/*
* AsyncTask to load tags
*/
private boolean mIsTaskRunning = false;
private class LoadTagsTask extends AsyncTask<Void, Void, ReaderTagList> {
@Override
protected void onPreExecute() {
mIsTaskRunning = true;
}
@Override
protected void onCancelled() {
mIsTaskRunning = false;
}
@Override
protected ReaderTagList doInBackground(Void... params) {
return ReaderTagTable.getFollowedTags();
}
@Override
protected void onPostExecute(ReaderTagList tagList) {
if (tagList != null && !tagList.isSameList(mTags)) {
mTags.clear();
mTags.addAll(tagList);
notifyDataSetChanged();
}
mIsTaskRunning = false;
if (mDataLoadedListener != null) {
mDataLoadedListener.onDataLoaded(isEmpty());
}
}
}
}
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