diff options
Diffstat (limited to 'mobile/android/base/java/org/mozilla/gecko/widget/RecyclerViewClickSupport.java')
-rw-r--r-- | mobile/android/base/java/org/mozilla/gecko/widget/RecyclerViewClickSupport.java | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/mobile/android/base/java/org/mozilla/gecko/widget/RecyclerViewClickSupport.java b/mobile/android/base/java/org/mozilla/gecko/widget/RecyclerViewClickSupport.java new file mode 100644 index 000000000..a0c6049c5 --- /dev/null +++ b/mobile/android/base/java/org/mozilla/gecko/widget/RecyclerViewClickSupport.java @@ -0,0 +1,105 @@ +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +package org.mozilla.gecko.widget; + +import android.support.v7.widget.RecyclerView; +import android.view.View; + +import org.mozilla.gecko.R; + +/** + * {@link RecyclerViewClickSupport} implementation that will notify an OnClickListener about clicks and long clicks + * on items displayed by the RecyclerView. + * @see <a href="http://www.littlerobots.nl/blog/Handle-Android-RecyclerView-Clicks/">littlerobots.nl</a> + */ +public class RecyclerViewClickSupport { + private final RecyclerView mRecyclerView; + private OnItemClickListener mOnItemClickListener; + private OnItemLongClickListener mOnItemLongClickListener; + private View.OnClickListener mOnClickListener = new View.OnClickListener() { + @Override + public void onClick(View v) { + if (mOnItemClickListener != null) { + RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v); + mOnItemClickListener.onItemClicked(mRecyclerView, holder.getAdapterPosition(), v); + } + } + }; + private View.OnLongClickListener mOnLongClickListener = new View.OnLongClickListener() { + @Override + public boolean onLongClick(View v) { + if (mOnItemLongClickListener != null) { + RecyclerView.ViewHolder holder = mRecyclerView.getChildViewHolder(v); + return mOnItemLongClickListener.onItemLongClicked(mRecyclerView, holder.getAdapterPosition(), v); + } + return false; + } + }; + private RecyclerView.OnChildAttachStateChangeListener mAttachListener + = new RecyclerView.OnChildAttachStateChangeListener() { + @Override + public void onChildViewAttachedToWindow(View view) { + if (mOnItemClickListener != null) { + view.setOnClickListener(mOnClickListener); + } + if (mOnItemLongClickListener != null) { + view.setOnLongClickListener(mOnLongClickListener); + } + } + + @Override + public void onChildViewDetachedFromWindow(View view) { + + } + }; + + private RecyclerViewClickSupport(RecyclerView recyclerView) { + mRecyclerView = recyclerView; + mRecyclerView.setTag(R.id.recycler_view_click_support, this); + mRecyclerView.addOnChildAttachStateChangeListener(mAttachListener); + } + + public static RecyclerViewClickSupport addTo(RecyclerView view) { + RecyclerViewClickSupport support = (RecyclerViewClickSupport) view.getTag(R.id.recycler_view_click_support); + if (support == null) { + support = new RecyclerViewClickSupport(view); + } + return support; + } + + public static RecyclerViewClickSupport removeFrom(RecyclerView view) { + RecyclerViewClickSupport support = (RecyclerViewClickSupport) view.getTag(R.id.recycler_view_click_support); + if (support != null) { + support.detach(view); + } + return support; + } + + public RecyclerViewClickSupport setOnItemClickListener(OnItemClickListener listener) { + mOnItemClickListener = listener; + return this; + } + + public RecyclerViewClickSupport setOnItemLongClickListener(OnItemLongClickListener listener) { + mOnItemLongClickListener = listener; + return this; + } + + private void detach(RecyclerView view) { + view.removeOnChildAttachStateChangeListener(mAttachListener); + view.setTag(R.id.recycler_view_click_support, null); + } + + public interface OnItemClickListener { + + void onItemClicked(RecyclerView recyclerView, int position, View v); + } + + public interface OnItemLongClickListener { + + boolean onItemLongClicked(RecyclerView recyclerView, int position, View v); + } +} |