106 lines
3.9 KiB
Java
106 lines
3.9 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko.widget;
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import android.support.v7.widget.RecyclerView;
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import android.view.View;
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import org.mozilla.gecko.R;
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/**
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* {@link RecyclerViewClickSupport} implementation that will notify an OnClickListener about clicks and long clicks
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* on items displayed by the RecyclerView.
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* @see <a href="http://www.littlerobots.nl/blog/Handle-Android-RecyclerView-Clicks/">littlerobots.nl</a>
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*/
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public class RecyclerViewClickSupport {
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private final RecyclerView mRecyclerView;
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private OnItemClickListener mOnItemClickListener;
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private OnItemLongClickListener mOnItemLongClickListener;
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private View.OnClickListener mOnClickListener = new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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if (mOnItemClickListener != null) {
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RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
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mOnItemClickListener.onItemClicked(mRecyclerView, holder.getAdapterPosition(), v);
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}
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}
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};
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private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() {
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@Override
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public boolean onLongClick(View v) {
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if (mOnItemLongClickListener != null) {
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RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v);
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return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, holder.getAdapterPosition(), v);
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}
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return false;
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}
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};
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private RecyclerView.OnChildAttachStateChangeListener mAttachListener
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= new RecyclerView.OnChildAttachStateChangeListener() {
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@Override
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public void onChildViewAttachedToWindow(View view) {
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if (mOnItemClickListener != null) {
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view.setOnClickListener(mOnClickListener);
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}
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if (mOnItemLongClickListener != null) {
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view.setOnLongClickListener(mOnLongClickListener);
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}
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}
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@Override
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public void onChildViewDetachedFromWindow(View view) {
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}
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};
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private RecyclerViewClickSupport(RecyclerView recyclerView) {
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mRecyclerView = recyclerView;
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mRecyclerView.setTag(R.id.recycler_view_click_support, this);
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mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener);
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}
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public static RecyclerViewClickSupport addTo(RecyclerView view) {
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RecyclerViewClickSupport support = (RecyclerViewClickSupport) view.getTag(R.id.recycler_view_click_support);
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if (support == null) {
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support = new RecyclerViewClickSupport(view);
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}
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return support;
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}
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public static RecyclerViewClickSupport removeFrom(RecyclerView view) {
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RecyclerViewClickSupport support = (RecyclerViewClickSupport) view.getTag(R.id.recycler_view_click_support);
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if (support != null) {
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support.detach(view);
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}
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return support;
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}
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public RecyclerViewClickSupport setOnItemClickListener(OnItemClickListener listener) {
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mOnItemClickListener = listener;
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return this;
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}
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public RecyclerViewClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) {
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mOnItemLongClickListener = listener;
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return this;
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}
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private void detach(RecyclerView view) {
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view.removeOnChildAttachStateChangeListener(mAttachListener);
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view.setTag(R.id.recycler_view_click_support, null);
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}
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public interface OnItemClickListener {
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void onItemClicked(RecyclerView recyclerView, int position, View v);
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}
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public interface OnItemLongClickListener {
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boolean onItemLongClicked(RecyclerView recyclerView, int position, View v);
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}
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}
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