DocumentListItemAdapter.java
/*
* Copyright 2021 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 androidx.appsearch.debugview.view;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.RestrictTo;
import androidx.appsearch.app.GenericDocument;
import androidx.appsearch.debugview.R;
import androidx.core.util.Preconditions;
import androidx.recyclerview.widget.RecyclerView;
import java.util.List;
/**
* Adapter for displaying a list of {@link GenericDocument} objects.
*
* <p>This adapter displays each item as a namespace and document ID.
*
* <p>Documents can be manually changed by calling {@link #setDocuments}.
*
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY)
public class DocumentListItemAdapter extends
RecyclerView.Adapter<DocumentListItemAdapter.ViewHolder> {
private List<GenericDocument> mDocuments;
private DocumentListFragment mDocumentListFragment;
DocumentListItemAdapter(@NonNull List<GenericDocument> documents,
@NonNull DocumentListFragment documentListFragment) {
mDocuments = Preconditions.checkNotNull(documents);
mDocumentListFragment = Preconditions.checkNotNull(documentListFragment);
}
/**
* Sets the adapter's document list.
*
* @param documents list of {@link GenericDocument} objects to update adapter with.
*/
public void setDocuments(@NonNull List<GenericDocument> documents) {
mDocuments = Preconditions.checkNotNull(documents);
notifyDataSetChanged();
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.adapter_document_list_item, parent, /*attachToRoot=*/false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
String namespace = mDocuments.get(position).getNamespace();
String id = mDocuments.get(position).getId();
holder.getNamespaceLabel().setText(
"Namespace: \"" + namespace + "\"");
holder.getIdLabel().setText("ID: \"" + id + "\"");
holder.itemView.setOnClickListener(unusedView -> {
DocumentFragment documentFragment =
DocumentFragment.createDocumentFragment(namespace, id);
mDocumentListFragment.getActivity().getSupportFragmentManager()
.beginTransaction()
.replace(R.id.fragment_container, documentFragment)
.addToBackStack(/*name=*/null)
.commit();
}
);
}
@Override
public int getItemCount() {
return mDocuments.size();
}
/**
* ViewHolder for {@link DocumentListItemAdapter}.
*/
public static class ViewHolder extends RecyclerView.ViewHolder {
private final TextView mNamespaceLabel;
private final TextView mIdLabel;
public ViewHolder(@NonNull View view) {
super(view);
Preconditions.checkNotNull(view);
mNamespaceLabel = view.findViewById(R.id.doc_item_namespace);
mIdLabel = view.findViewById(R.id.doc_item_id);
}
@NonNull
public TextView getNamespaceLabel() {
return mNamespaceLabel;
}
@NonNull
public TextView getIdLabel() {
return mIdLabel;
}
}
}