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/*
* Copyright (C) 2014 Daniel Albert
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.ui.widget;
import android.content.Context;
import android.support.v4.widget.NoScrollableSwipeRefreshLayout;
import android.util.AttributeSet;
import android.view.MotionEvent;
import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
public class ListAwareSwipeRefreshLayout extends NoScrollableSwipeRefreshLayout {
private StickyListHeadersListView mStickyListHeadersListView = null;
private boolean mIsLocked = false;
/**
* Constructors
*/
public ListAwareSwipeRefreshLayout(Context context) {
super(context);
}
public ListAwareSwipeRefreshLayout(Context context, AttributeSet attrs) {
super(context, attrs);
}
/**
* Getters / Setters
*/
public void setStickyListHeadersListView(StickyListHeadersListView stickyListHeadersListView) {
mStickyListHeadersListView = stickyListHeadersListView;
}
public StickyListHeadersListView getStickyListHeadersListView() {
return mStickyListHeadersListView;
}
public void setIsLocked(boolean locked) {
mIsLocked = locked;
}
public boolean getIsLocked() {
return mIsLocked;
}
@Override
public boolean canChildScrollUp() {
if (mStickyListHeadersListView == null) {
return super.canChildScrollUp();
}
return (mIsLocked || (
mStickyListHeadersListView.getWrappedList().getChildCount() > 0
&& (mStickyListHeadersListView.getWrappedList().getChildAt(0).getTop() < 0
|| mStickyListHeadersListView.getFirstVisiblePosition() > 0)
)
);
}
/** Called on a touch event, this method exempts a small area in the upper right from pull to
* refresh handling.
*
* If the touch event happens somewhere in the upper right corner of the screen, we return false
* to indicate that the event was not handled. This ensures events in that area are always
* handed through to the list scrollbar handle. For all other cases, we pass the message through
* to the pull to refresh handler.
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
// The device may be null. This actually happens
if (event.getDevice() != null) {
// MotionEvent.AXIS_X is api level 12, for some reason, so we use a constant 0 here
float ratioX = event.getX() / event.getDevice().getMotionRange(0).getMax();
float ratioY = event.getY() / event.getDevice().getMotionRange(1).getMax();
// if this is the upper right corner, don't handle as pull to refresh event
if (ratioX > 0.85f && ratioY < 0.15f) {
return false;
}
}
return super.onTouchEvent(event);
}
}
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