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/* 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.geckoview_example;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import androidx.coordinatorlayout.widget.CoordinatorLayout;
import androidx.core.view.ViewCompat;
import org.mozilla.geckoview.PanZoomController;
public class ToolbarBottomBehavior extends CoordinatorLayout.Behavior<View> {
public ToolbarBottomBehavior(Context context, AttributeSet attributeSet) {
super(context, attributeSet);
}
@Override
public boolean onStartNestedScroll(
CoordinatorLayout coordinatorLayout,
View child,
View directTargetChild,
View target,
int axes,
int type) {
NestedGeckoView geckoView = (NestedGeckoView) target;
if (axes == ViewCompat.SCROLL_AXIS_VERTICAL
&& geckoView.getInputResult() == PanZoomController.INPUT_RESULT_HANDLED) {
return true;
}
if (geckoView.getInputResult() == PanZoomController.INPUT_RESULT_UNHANDLED) {
// Restore the toolbar to the original (visible) state, this is what A-C does.
child.setTranslationY(0f);
}
return false;
}
@Override
public void onStopNestedScroll(
CoordinatorLayout coordinatorLayout, View child, View target, int type) {
// Snap up or down the user stops scrolling.
if (child.getTranslationY() >= (child.getHeight() / 2f)) {
child.setTranslationY(child.getHeight());
} else {
child.setTranslationY(0f);
}
}
@Override
public void onNestedPreScroll(
CoordinatorLayout coordinatorLayout,
View child,
View target,
int dx,
int dy,
int[] consumed,
int type) {
super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type);
child.setTranslationY(Math.max(0f, Math.min(child.getHeight(), child.getTranslationY() + dy)));
}
}
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