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DrKLO
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1 changed files with 339 additions and 0 deletions
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/*
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* This is the source code of Telegram for Android v. 2.x
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* It is licensed under GNU GPL v. 2 or later.
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* You should have received a copy of the license in this archive (see LICENSE).
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*
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* Copyright Nikolai Kudashov, 2013-2015.
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*/
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package org.telegram.ui.Components;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.view.GestureDetector;
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import android.view.HapticFeedbackConstants;
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import android.view.MotionEvent;
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import android.view.SoundEffectConstants;
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import android.view.View;
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import android.view.ViewConfiguration;
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import org.telegram.android.AndroidUtilities;
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import org.telegram.android.support.widget.RecyclerView;
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import org.telegram.messenger.FileLog;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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public class RecyclerListView extends RecyclerView {
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private OnItemClickListener onItemClickListener;
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private OnItemLongClickListener onItemLongClickListener;
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private RecyclerView.OnScrollListener onScrollListener;
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private OnInterceptTouchListener onInterceptTouchListener;
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private View emptyView;
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private Runnable selectChildRunnable;
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private GestureDetector mGestureDetector;
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private View currentChildView;
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private int currentChildPosition;
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private boolean interceptedByChild;
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private boolean wasPressed;
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private boolean disallowInterceptTouchEvents;
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private boolean instantClick;
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private static int[] attributes;
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private static boolean gotAttributes;
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public interface OnItemClickListener {
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void onItemClick(View view, int position);
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}
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public interface OnItemLongClickListener {
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void onItemClick(View view, int position);
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}
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public interface OnInterceptTouchListener {
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boolean onInterceptTouchEvent(MotionEvent event);
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}
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private class RecyclerListViewItemClickListener implements RecyclerView.OnItemTouchListener {
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public RecyclerListViewItemClickListener(Context context) {
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mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
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@Override
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public boolean onSingleTapUp(MotionEvent e) {
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if (currentChildView != null && onItemClickListener != null) {
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currentChildView.setPressed(true);
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final View view = currentChildView;
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if (instantClick) {
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view.playSoundEffect(SoundEffectConstants.CLICK);
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onItemClickListener.onItemClick(view, currentChildPosition);
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}
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AndroidUtilities.runOnUIThread(new Runnable() {
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@Override
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public void run() {
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if (view != null) {
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view.setPressed(false);
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if (!instantClick) {
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view.playSoundEffect(SoundEffectConstants.CLICK);
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if (onItemClickListener != null) {
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onItemClickListener.onItemClick(view, currentChildPosition);
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}
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}
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}
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}
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}, ViewConfiguration.getPressedStateDuration());
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if (selectChildRunnable != null) {
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AndroidUtilities.cancelRunOnUIThread(selectChildRunnable);
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selectChildRunnable = null;
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currentChildView = null;
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interceptedByChild = false;
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}
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}
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return true;
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}
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@Override
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public void onLongPress(MotionEvent e) {
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if (currentChildView != null && onItemLongClickListener != null) {
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currentChildView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
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onItemLongClickListener.onItemClick(currentChildView, currentChildPosition);
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}
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}
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});
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}
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@Override
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public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
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int action = e.getActionMasked();
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boolean isScrollIdle = RecyclerListView.this.getScrollState() == RecyclerListView.SCROLL_STATE_IDLE;
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if ((action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_POINTER_DOWN) && currentChildView == null && isScrollIdle) {
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currentChildView = view.findChildViewUnder(e.getX(), e.getY());
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currentChildPosition = -1;
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if (currentChildView != null) {
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currentChildPosition = view.getChildPosition(currentChildView);
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MotionEvent childEvent = MotionEvent.obtain(0, 0, e.getActionMasked(), e.getX() - currentChildView.getLeft(), e.getY() - currentChildView.getTop(), 0);
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if (currentChildView.onTouchEvent(childEvent)) {
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interceptedByChild = true;
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}
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childEvent.recycle();
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}
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}
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if (currentChildView != null && !interceptedByChild) {
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try {
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if (e != null) {
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mGestureDetector.onTouchEvent(e);
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}
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} catch (Exception ev) {
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FileLog.e("tmessages", ev);
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}
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}
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if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_POINTER_DOWN) {
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if (!interceptedByChild && currentChildView != null) {
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selectChildRunnable = new Runnable() {
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@Override
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public void run() {
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if (selectChildRunnable != null && currentChildView != null) {
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currentChildView.setPressed(true);
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selectChildRunnable = null;
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}
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}
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};
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AndroidUtilities.runOnUIThread(selectChildRunnable, ViewConfiguration.getTapTimeout());
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}
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} else if (currentChildView != null && (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_POINTER_UP || action == MotionEvent.ACTION_CANCEL || !isScrollIdle)) {
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if (selectChildRunnable != null) {
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AndroidUtilities.cancelRunOnUIThread(selectChildRunnable);
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selectChildRunnable = null;
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}
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currentChildView.setPressed(false);
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currentChildView = null;
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interceptedByChild = false;
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}
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return false;
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}
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@Override
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public void onTouchEvent(RecyclerView view, MotionEvent e) {
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}
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}
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private AdapterDataObserver observer = new AdapterDataObserver() {
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@Override
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public void onChanged() {
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checkIfEmpty();
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}
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@Override
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public void onItemRangeInserted(int positionStart, int itemCount) {
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checkIfEmpty();
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}
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@Override
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public void onItemRangeRemoved(int positionStart, int itemCount) {
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checkIfEmpty();
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}
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};
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public int[] getResourceDeclareStyleableIntArray(String packageName, String name) {
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try {
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Field f = Class.forName(packageName + ".R$styleable").getField(name);
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if (f != null) {
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return (int[]) f.get(null);
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}
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} catch (Throwable t) {
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//ignore
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}
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return null;
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}
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public RecyclerListView(Context context) {
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super(context);
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try {
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if (!gotAttributes) {
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attributes = getResourceDeclareStyleableIntArray("com.android.internal", "View");
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gotAttributes = true;
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}
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TypedArray a = context.getTheme().obtainStyledAttributes(attributes);
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Method initializeScrollbars = android.view.View.class.getDeclaredMethod("initializeScrollbars", TypedArray.class);
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initializeScrollbars.invoke(this, a);
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a.recycle();
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} catch (Throwable e) {
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FileLog.e("tmessages", e);
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}
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super.setOnScrollListener(new OnScrollListener() {
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@Override
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public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
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if (newState != SCROLL_STATE_IDLE && currentChildView != null) {
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if (selectChildRunnable != null) {
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AndroidUtilities.cancelRunOnUIThread(selectChildRunnable);
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selectChildRunnable = null;
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}
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MotionEvent event = MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0, 0, 0);
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try {
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mGestureDetector.onTouchEvent(event);
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} catch (Exception e) {
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FileLog.e("tmessages", e);
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}
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currentChildView.onTouchEvent(event);
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event.recycle();
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currentChildView.setPressed(false);
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currentChildView = null;
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interceptedByChild = false;
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}
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if (onScrollListener != null) {
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onScrollListener.onScrollStateChanged(recyclerView, newState);
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}
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}
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@Override
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public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
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if (onScrollListener != null) {
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onScrollListener.onScrolled(recyclerView, dx, dy);
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}
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}
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});
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addOnItemTouchListener(new RecyclerListViewItemClickListener(context));
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}
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@Override
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public void setVerticalScrollBarEnabled(boolean verticalScrollBarEnabled) {
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if (attributes != null) {
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super.setVerticalScrollBarEnabled(verticalScrollBarEnabled);
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}
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}
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public void setOnItemClickListener(OnItemClickListener listener) {
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onItemClickListener = listener;
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}
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public void setOnItemLongClickListener(OnItemLongClickListener listener) {
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onItemLongClickListener = listener;
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}
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public void setEmptyView(View view) {
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if (emptyView == view) {
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return;
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}
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emptyView = view;
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checkIfEmpty();
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}
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public View getEmptyView() {
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return emptyView;
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}
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public void invalidateViews() {
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int count = getChildCount();
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for (int a = 0; a < count; a++) {
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getChildAt(a).invalidate();
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}
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}
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@Override
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public boolean onInterceptTouchEvent(MotionEvent e) {
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if (disallowInterceptTouchEvents) {
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requestDisallowInterceptTouchEvent(true);
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}
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return onInterceptTouchListener != null && onInterceptTouchListener.onInterceptTouchEvent(e) || super.onInterceptTouchEvent(e);
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}
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private void checkIfEmpty() {
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if (emptyView == null || getAdapter() == null) {
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return;
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}
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boolean emptyViewVisible = getAdapter().getItemCount() == 0;
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emptyView.setVisibility(emptyViewVisible ? VISIBLE : INVISIBLE);
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setVisibility(emptyViewVisible ? INVISIBLE : VISIBLE);
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}
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@Override
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public void setOnScrollListener(OnScrollListener listener) {
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onScrollListener = listener;
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}
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public void setOnInterceptTouchListener(OnInterceptTouchListener listener) {
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onInterceptTouchListener = listener;
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}
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public void setInstantClick(boolean value) {
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instantClick = value;
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}
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public void setDisallowInterceptTouchEvents(boolean value) {
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disallowInterceptTouchEvents = value;
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}
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@Override
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public void setAdapter(Adapter adapter) {
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final Adapter oldAdapter = getAdapter();
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if (oldAdapter != null) {
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oldAdapter.unregisterAdapterDataObserver(observer);
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}
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super.setAdapter(adapter);
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if (adapter != null) {
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adapter.registerAdapterDataObserver(observer);
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}
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checkIfEmpty();
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}
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@Override
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public void stopScroll() {
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try {
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super.stopScroll();
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} catch (NullPointerException exception) {
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/**
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* The mLayout has been disposed of before the
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* RecyclerView and this stops the application
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* from crashing.
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*/
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}
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}
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}
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