NekoX/TMessagesProj/src/main/java/org/telegram/ui/Components/LayoutListView.java

91 lines
2.9 KiB
Java

/*
* This is the source code of Telegram for Android v. 1.3.2.
* It is licensed under GNU GPL v. 2 or later.
* You should have received a copy of the license in this archive (see LICENSE).
*
* Copyright Nikolai Kudashov, 2013.
*/
package org.telegram.ui.Components;
import android.annotation.SuppressLint;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ListView;
public class LayoutListView extends ListView {
public interface OnInterceptTouchEventListener {
boolean onInterceptTouchEvent(MotionEvent event);
}
private OnInterceptTouchEventListener onInterceptTouchEventListener;
private int height = -1;
private int forceTop = Integer.MIN_VALUE;
public LayoutListView(Context context) {
super(context);
}
public LayoutListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public LayoutListView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public void setOnInterceptTouchEventListener(OnInterceptTouchEventListener listener) {
onInterceptTouchEventListener = listener;
}
public void setForceTop(int value) {
forceTop = value;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (onInterceptTouchEventListener != null) {
return onInterceptTouchEventListener.onInterceptTouchEvent(ev) || super.onInterceptTouchEvent(ev);
}
return super.onInterceptTouchEvent(ev);
}
@SuppressLint("DrawAllocation")
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
View v = getChildAt(getChildCount() - 1);
int scrollTo = getLastVisiblePosition();
if (v != null && height > 0 && changed && ((bottom - top) < height)) {
int lastTop = forceTop == Integer.MIN_VALUE ? (bottom - top) - (height - v.getTop()) - getPaddingTop() : forceTop;
forceTop = Integer.MIN_VALUE;
setSelectionFromTop(scrollTo, lastTop);
super.onLayout(changed, left, top, right, bottom);
// post(new Runnable() {
// @Override
// public void run() {
// try {
// setSelectionFromTop(scrollTo, lastTop);
// } catch (Exception e) {
// e.printStackTrace();
// }
// }
// });
} else {
if (forceTop != Integer.MIN_VALUE) {
setSelectionFromTop(scrollTo, forceTop);
forceTop = Integer.MIN_VALUE;
}
try {
super.onLayout(changed, left, top, right, bottom);
} catch (Exception e) {
e.printStackTrace();
}
}
height = (bottom - top);
}
}