chinwag-android/app/src/main/java/com/keylesspalace/tusky/adapter/TimelineAdapter.java

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/* Copyright 2017 Andrew Dawson
*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
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*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.adapter;
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import android.support.annotation.NonNull;
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import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
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import com.keylesspalace.tusky.R;
import com.keylesspalace.tusky.interfaces.StatusActionListener;
import com.keylesspalace.tusky.viewdata.StatusViewData;
public final class TimelineAdapter extends RecyclerView.Adapter {
public interface AdapterDataSource<T> {
int getItemCount();
T getItemAt(int pos);
}
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private static final int VIEW_TYPE_STATUS = 0;
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private static final int VIEW_TYPE_PLACEHOLDER = 2;
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private final AdapterDataSource<StatusViewData> dataSource;
private final StatusActionListener statusListener;
private boolean mediaPreviewEnabled;
private boolean useAbsoluteTime;
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public TimelineAdapter(AdapterDataSource<StatusViewData> dataSource,
StatusActionListener statusListener) {
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super();
this.dataSource = dataSource;
this.statusListener = statusListener;
mediaPreviewEnabled = true;
useAbsoluteTime = false;
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}
@NonNull
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@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {
switch (viewType) {
default:
case VIEW_TYPE_STATUS: {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.item_status, viewGroup, false);
return new StatusViewHolder(view, useAbsoluteTime);
}
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case VIEW_TYPE_PLACEHOLDER: {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.item_status_placeholder, viewGroup, false);
return new PlaceholderViewHolder(view);
}
}
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}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int position) {
StatusViewData status = dataSource.getItemAt(position);
if (status instanceof StatusViewData.Placeholder) {
PlaceholderViewHolder holder = (PlaceholderViewHolder) viewHolder;
holder.setup(statusListener, ((StatusViewData.Placeholder) status).isLoading());
} else {
StatusViewHolder holder = (StatusViewHolder) viewHolder;
holder.setupWithStatus((StatusViewData.Concrete) status,
statusListener, mediaPreviewEnabled);
}
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}
@Override
public int getItemCount() {
return dataSource.getItemCount();
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}
@Override
public int getItemViewType(int position) {
if (dataSource.getItemAt(position) instanceof StatusViewData.Placeholder) {
return VIEW_TYPE_PLACEHOLDER;
} else {
return VIEW_TYPE_STATUS;
}
}
public void setMediaPreviewEnabled(boolean enabled) {
mediaPreviewEnabled = enabled;
}
public void setUseAbsoluteTime(boolean useAbsoluteTime){
this.useAbsoluteTime=useAbsoluteTime;
}
public boolean getMediaPreviewEnabled() {
return mediaPreviewEnabled;
}
@Override
public long getItemId(int position) {
return dataSource.getItemAt(position).getViewDataId();
}
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}