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/*
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* Copyright 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package eu.kanade.mangafeed.ui.base.fab;
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import android.content.Context;
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import android.support.design.widget.CoordinatorLayout;
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import android.support.design.widget.FloatingActionButton;
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import android.support.v4.view.ViewCompat;
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import android.util.AttributeSet;
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import android.view.View;
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public class ScrollAwareFABBehavior extends FloatingActionButton.Behavior {
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public ScrollAwareFABBehavior(Context context, AttributeSet attrs) {
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super();
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}
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@Override
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public boolean onStartNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child,
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final View directTargetChild, final View target, final int nestedScrollAxes) {
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// Ensure we react to vertical scrolling
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return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL
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|| super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes);
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}
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@Override
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public void onNestedScroll(final CoordinatorLayout coordinatorLayout, final FloatingActionButton child,
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final View target, final int dxConsumed, final int dyConsumed,
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final int dxUnconsumed, final int dyUnconsumed) {
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super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
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if (dyConsumed > 0 && child.getVisibility() == View.VISIBLE) {
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// User scrolled down and the FAB is currently visible -> hide the FAB
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child.hide();
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} else if (dyConsumed < 0 && child.getVisibility() != View.VISIBLE) {
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// User scrolled up and the FAB is currently not visible -> show the FAB
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child.show();
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}
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}
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}
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@ -0,0 +1,14 @@
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<?xml version="1.0" encoding="utf-8"?>
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<android.support.design.widget.TabLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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android:id="@+id/tabs"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:theme="@style/ThemeOverlay.AppTheme.Dark"
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android:background="@color/colorPrimary"
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android:elevation="4dp"
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app:tabGravity="center"
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app:tabMode="scrollable"
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app:tabMinWidth="75dp"
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app:tabIndicatorColor="@color/white"/>
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