/* * Copyright (C) 2014 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.support.v4.widget; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.view.WindowInsets; /** * Provides functionality for DrawerLayout unique to API 21 */ class DrawerLayoutCompatApi21 { public static void configureApplyInsets(View drawerLayout) { if (drawerLayout instanceof DrawerLayoutImpl) { drawerLayout.setOnApplyWindowInsetsListener(new InsetsListener()); drawerLayout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN); } } public static void dispatchChildInsets(View child, Object insets, int gravity) { WindowInsets wi = (WindowInsets) insets; if (gravity == Gravity.LEFT) { wi = wi.replaceSystemWindowInsets(wi.getSystemWindowInsetLeft(), wi.getSystemWindowInsetTop(), 0, wi.getSystemWindowInsetBottom()); } else if (gravity == Gravity.RIGHT) { wi = wi.replaceSystemWindowInsets(0, wi.getSystemWindowInsetTop(), wi.getSystemWindowInsetRight(), wi.getSystemWindowInsetBottom()); } child.dispatchApplyWindowInsets(wi); } public static void applyMarginInsets(ViewGroup.MarginLayoutParams lp, Object insets, int gravity) { WindowInsets wi = (WindowInsets) insets; if (gravity == Gravity.LEFT) { wi = wi.replaceSystemWindowInsets(wi.getSystemWindowInsetLeft(), wi.getSystemWindowInsetTop(), 0, wi.getSystemWindowInsetBottom()); } else if (gravity == Gravity.RIGHT) { wi = wi.replaceSystemWindowInsets(0, wi.getSystemWindowInsetTop(), wi.getSystemWindowInsetRight(), wi.getSystemWindowInsetBottom()); } lp.leftMargin = wi.getSystemWindowInsetLeft(); lp.topMargin = wi.getSystemWindowInsetTop(); lp.rightMargin = wi.getSystemWindowInsetRight(); lp.bottomMargin = wi.getSystemWindowInsetBottom(); } public static int getTopInset(Object insets) { return insets != null ? ((WindowInsets) insets).getSystemWindowInsetTop() : 0; } static class InsetsListener implements View.OnApplyWindowInsetsListener { @Override public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) { final DrawerLayoutImpl drawerLayout = (DrawerLayoutImpl) v; drawerLayout.setChildInsets(insets, insets.getSystemWindowInsetTop() > 0); return insets.consumeSystemWindowInsets(); } } }