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package com.mapswithme.maps.adapter;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.drawable.StateListDrawable;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.mapswithme.maps.R;
import com.mapswithme.maps.bookmarks.data.CatalogTag;
import com.mapswithme.maps.bookmarks.data.CatalogTagsGroup;
import com.mapswithme.maps.ugc.routes.TagsResFactory;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
public class TagsAdapter extends RecyclerView.Adapter<TagsAdapter.TagViewHolder>
{
@NonNull
private final SelectionState mState;
@NonNull
private final OnItemClickListener<TagViewHolder> mListener;
@NonNull
private final List<CatalogTag> mTags;
@NonNull
private final TagsCompositeAdapter.SelectionPolicy mSelectionPolicy;
TagsAdapter(@NonNull OnItemClickListener<TagViewHolder> listener, @NonNull SelectionState state,
@NonNull List<CatalogTag> tags,
@NonNull TagsCompositeAdapter.SelectionPolicy selectionPolicy)
{
mListener = new ClickListenerWrapper(listener);
mState = state;
mTags = tags;
mSelectionPolicy = selectionPolicy;
setHasStableIds(true);
}
@Override
public TagViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.tag_item, parent, false);
return new TagViewHolder(itemView, mListener);
}
@Override
public long getItemId(int position)
{
return mTags.get(position).hashCode();
}
@Override
public void onBindViewHolder(TagViewHolder holder, int position)
{
CatalogTag tag = mTags.get(position);
boolean isTagSelected = mState.contains(tag);
holder.itemView.setSelected(isTagSelected);
holder.mTag = tag;
Context context = holder.itemView.getContext();
holder.mText.setText(tag.getLocalizedName());
boolean isEnabled = mSelectionPolicy.isTagsSelectionAllowed() || isTagSelected;
holder.itemView.setEnabled(isEnabled);
StateListDrawable selector = TagsResFactory.makeSelector(context, tag.getColor());
holder.itemView.setBackgroundDrawable(selector);
ColorStateList color = TagsResFactory.makeColor(context, tag.getColor());
holder.mText.setTextColor(color);
holder.mText.setSelected(isTagSelected);
holder.mText.setEnabled(isEnabled);
}
@Override
public int getItemCount()
{
return mTags.size();
}
@NonNull
Collection<CatalogTag> getSelectedTags()
{
return Collections.unmodifiableCollection(mState.mTags);
}
static final class SelectionState
{
private SelectionState()
{
}
@NonNull
private final List<CatalogTag> mTags = new ArrayList<>();
private void addAll(@NonNull CatalogTag... tags)
{
mTags.addAll(Arrays.asList(tags));
}
private void addAll(@NonNull List<CatalogTag> tags)
{
mTags.addAll(tags);
}
private boolean removeAll(@NonNull CatalogTag... tags)
{
return mTags.removeAll(Arrays.asList(tags));
}
private boolean remove(@NonNull List<CatalogTag> tags)
{
return mTags.removeAll(tags);
}
private boolean contains(@NonNull CatalogTag tag)
{
return mTags.contains(tag);
}
@NonNull
public static SelectionState empty()
{
return new SelectionState();
}
@NonNull
public static SelectionState from(@NonNull List<CatalogTag> savedTags,
@NonNull CatalogTagsGroup src)
{
SelectionState state = empty();
for (CatalogTag each : savedTags)
{
if (src.getTags().contains(each))
state.addAll(each);
}
return state;
}
}
public static class TagViewHolder extends RecyclerView.ViewHolder
{
@NonNull
private final TextView mText;
@NonNull
private final OnItemClickListener<TagViewHolder> mListener;
@Nullable
private CatalogTag mTag;
TagViewHolder(@NonNull View itemView, @NonNull OnItemClickListener<TagViewHolder> listener)
{
super(itemView);
mText = itemView.findViewById(R.id.text);
mListener = listener;
itemView.setOnClickListener(v -> mListener.onItemClick(v, this));
}
@NonNull
private CatalogTag getEntity()
{
return Objects.requireNonNull(mTag);
}
}
private class ClickListenerWrapper implements OnItemClickListener<TagViewHolder>
{
@NonNull
private final OnItemClickListener<TagViewHolder> mListener;
ClickListenerWrapper(@NonNull OnItemClickListener<TagViewHolder> listener)
{
mListener = listener;
}
@Override
public void onItemClick(@NonNull View v, @NonNull TagViewHolder item)
{
if (mState.contains(item.getEntity()))
mState.removeAll(item.getEntity());
else
mState.addAll(item.getEntity());
mListener.onItemClick(v, item);
}
}
}
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