1/*
2 * Copyright (C) 2010 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 */
16package com.example.android.supportv7.app;
17
18import android.os.Bundle;
19import android.support.v4.app.FragmentTransaction;
20import android.support.v7.app.ActionBar;
21import android.support.v7.app.ActionBar.Tab;
22import android.support.v7.app.AppCompatActivity;
23import android.view.Gravity;
24import android.view.Menu;
25import android.view.View;
26import android.view.ViewGroup.LayoutParams;
27import android.widget.ArrayAdapter;
28
29import com.example.android.supportv7.R;
30
31/**
32 * This demo shows how various action bar display option flags can be combined and their effects.
33 */
34public class ActionBarDisplayOptions extends AppCompatActivity
35        implements View.OnClickListener, ActionBar.TabListener {
36    private View mCustomView;
37    private ActionBar.LayoutParams mCustomViewLayoutParams;
38
39    @Override
40    protected void onCreate(Bundle savedInstanceState) {
41        super.onCreate(savedInstanceState);
42        setContentView(R.layout.action_bar_display_options);
43
44        findViewById(R.id.toggle_home_as_up).setOnClickListener(this);
45        findViewById(R.id.toggle_show_home).setOnClickListener(this);
46        findViewById(R.id.toggle_use_logo).setOnClickListener(this);
47        findViewById(R.id.toggle_show_title).setOnClickListener(this);
48        findViewById(R.id.toggle_show_custom).setOnClickListener(this);
49        findViewById(R.id.cycle_custom_gravity).setOnClickListener(this);
50        findViewById(R.id.toggle_visibility).setOnClickListener(this);
51
52        // Configure several action bar elements that will be toggled by display options.
53        mCustomView = getLayoutInflater().inflate(R.layout.action_bar_display_options_custom, null);
54        mCustomViewLayoutParams = new ActionBar.LayoutParams(
55                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
56
57        final ActionBar bar = getSupportActionBar();
58        bar.setCustomView(mCustomView, mCustomViewLayoutParams);
59
60        final ArrayAdapter<String> listAdapter = new ArrayAdapter<String>(bar.getThemedContext(),
61                R.layout.support_simple_spinner_dropdown_item,
62                new String[] { "Item 1", "Item 2", "Item 3" });
63
64        bar.setLogo(R.drawable.ic_media_play);
65    }
66
67    @Override
68    public boolean onCreateOptionsMenu(Menu menu) {
69        getMenuInflater().inflate(R.menu.display_options_actions, menu);
70        return true;
71    }
72
73    @Override
74    public boolean onSupportNavigateUp() {
75        finish();
76        return true;
77    }
78
79    @Override
80    public void onClick(View v) {
81        final ActionBar bar = getSupportActionBar();
82        int flags = 0;
83        switch (v.getId()) {
84            case R.id.toggle_home_as_up:
85                flags = ActionBar.DISPLAY_HOME_AS_UP;
86                break;
87            case R.id.toggle_show_home:
88                flags = ActionBar.DISPLAY_SHOW_HOME;
89                break;
90            case R.id.toggle_use_logo:
91                flags = ActionBar.DISPLAY_USE_LOGO;
92                break;
93            case R.id.toggle_show_title:
94                flags = ActionBar.DISPLAY_SHOW_TITLE;
95                break;
96            case R.id.toggle_show_custom:
97                flags = ActionBar.DISPLAY_SHOW_CUSTOM;
98                break;
99            case R.id.cycle_custom_gravity: {
100                ActionBar.LayoutParams lp = mCustomViewLayoutParams;
101                int newGravity = 0;
102                switch (lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
103                    case Gravity.LEFT:
104                        newGravity = Gravity.CENTER_HORIZONTAL;
105                        break;
106                    case Gravity.CENTER_HORIZONTAL:
107                        newGravity = Gravity.RIGHT;
108                        break;
109                    case Gravity.RIGHT:
110                        newGravity = Gravity.LEFT;
111                        break;
112                }
113                lp.gravity = lp.gravity & ~Gravity.HORIZONTAL_GRAVITY_MASK | newGravity;
114                bar.setCustomView(mCustomView, lp);
115                return;
116            }
117            case R.id.toggle_visibility:
118                if (bar.isShowing()) {
119                    bar.hide();
120                } else {
121                    bar.show();
122                }
123                return;
124        }
125
126        int change = bar.getDisplayOptions() ^ flags;
127        bar.setDisplayOptions(change, flags);
128    }
129
130    @Override
131    public void onTabSelected(Tab tab, FragmentTransaction ft) {
132    }
133
134    @Override
135    public void onTabUnselected(Tab tab, FragmentTransaction ft) {
136    }
137
138    @Override
139    public void onTabReselected(Tab tab, FragmentTransaction ft) {
140    }
141}
142