1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.layoutlib.bridge.android.support;
18
19import com.android.ide.common.rendering.api.LayoutLog;
20import com.android.layoutlib.bridge.Bridge;
21import com.android.layoutlib.bridge.util.ReflectionUtils.ReflectionException;
22
23import android.annotation.Nullable;
24import android.view.View;
25
26import static android.view.Gravity.END;
27import static android.view.Gravity.LEFT;
28import static android.view.Gravity.RIGHT;
29import static android.view.Gravity.START;
30import static com.android.layoutlib.bridge.util.ReflectionUtils.getCause;
31import static com.android.layoutlib.bridge.util.ReflectionUtils.getMethod;
32import static com.android.layoutlib.bridge.util.ReflectionUtils.invoke;
33
34public class DrawerLayoutUtil {
35
36    public static final String CN_DRAWER_LAYOUT = "android.support.v4.widget.DrawerLayout";
37
38    public static void openDrawer(View drawerLayout, @Nullable String drawerGravity) {
39        int gravity = -1;
40        if ("left".equals(drawerGravity)) {
41            gravity = LEFT;
42        } else if ("right".equals(drawerGravity)) {
43            gravity = RIGHT;
44        } else if ("start".equals(drawerGravity)) {
45            gravity = START;
46        } else if ("end".equals(drawerGravity)) {
47            gravity = END;
48        }
49        if (gravity > 0) {
50            openDrawer(drawerLayout, gravity);
51        }
52    }
53
54    private static void openDrawer(View drawerLayout, int gravity) {
55        try {
56            invoke(getMethod(drawerLayout.getClass(), "openDrawer", int.class), drawerLayout,
57                    gravity);
58        } catch (ReflectionException e) {
59            Bridge.getLog().error(LayoutLog.TAG_BROKEN, "Unable to open navigation drawer",
60                    getCause(e), null);
61        }
62    }
63}
64