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 */
16
17package com.example.android.apis.app;
18
19import com.example.android.apis.R;
20
21import android.app.Activity;
22import android.app.DialogFragment;
23import android.app.Fragment;
24import android.app.FragmentTransaction;
25import android.os.Bundle;
26import android.view.LayoutInflater;
27import android.view.View;
28import android.view.View.OnClickListener;
29import android.view.ViewGroup;
30import android.widget.Button;
31import android.widget.TextView;
32
33public class FragmentDialog extends Activity {
34    int mStackLevel = 0;
35
36    @Override
37    protected void onCreate(Bundle savedInstanceState) {
38        super.onCreate(savedInstanceState);
39        setContentView(R.layout.fragment_dialog);
40
41        View tv = findViewById(R.id.text);
42        ((TextView)tv).setText("Example of displaying dialogs with a DialogFragment.  "
43                + "Press the show button below to see the first dialog; pressing "
44                + "successive show buttons will display other dialog styles as a "
45                + "stack, with dismissing or back going to the previous dialog.");
46
47        // Watch for button clicks.
48        Button button = (Button)findViewById(R.id.show);
49        button.setOnClickListener(new OnClickListener() {
50            public void onClick(View v) {
51                showDialog();
52            }
53        });
54
55        if (savedInstanceState != null) {
56            mStackLevel = savedInstanceState.getInt("level");
57        }
58    }
59
60    @Override
61    public void onSaveInstanceState(Bundle outState) {
62        super.onSaveInstanceState(outState);
63        outState.putInt("level", mStackLevel);
64    }
65
66//BEGIN_INCLUDE(add_dialog)
67    void showDialog() {
68        mStackLevel++;
69
70        // DialogFragment.show() will take care of adding the fragment
71        // in a transaction.  We also want to remove any currently showing
72        // dialog, so make our own transaction and take care of that here.
73        FragmentTransaction ft = getFragmentManager().beginTransaction();
74        Fragment prev = getFragmentManager().findFragmentByTag("dialog");
75        if (prev != null) {
76            ft.remove(prev);
77        }
78        ft.addToBackStack(null);
79
80        // Create and show the dialog.
81        DialogFragment newFragment = MyDialogFragment.newInstance(mStackLevel);
82        newFragment.show(ft, "dialog");
83    }
84//END_INCLUDE(add_dialog)
85
86    static String getNameForNum(int num) {
87        switch ((num-1)%6) {
88            case 1: return "STYLE_NO_TITLE";
89            case 2: return "STYLE_NO_FRAME";
90            case 3: return "STYLE_NO_INPUT (this window can't receive input, so "
91                    + "you will need to press the bottom show button)";
92            case 4: return "STYLE_NORMAL with dark fullscreen theme";
93            case 5: return "STYLE_NORMAL with light theme";
94            case 6: return "STYLE_NO_TITLE with light theme";
95            case 7: return "STYLE_NO_FRAME with light theme";
96            case 8: return "STYLE_NORMAL with light fullscreen theme";
97        }
98        return "STYLE_NORMAL";
99    }
100
101//BEGIN_INCLUDE(dialog)
102    public static class MyDialogFragment extends DialogFragment {
103        int mNum;
104
105        /**
106         * Create a new instance of MyDialogFragment, providing "num"
107         * as an argument.
108         */
109        static MyDialogFragment newInstance(int num) {
110            MyDialogFragment f = new MyDialogFragment();
111
112            // Supply num input as an argument.
113            Bundle args = new Bundle();
114            args.putInt("num", num);
115            f.setArguments(args);
116
117            return f;
118        }
119
120        @Override
121        public void onCreate(Bundle savedInstanceState) {
122            super.onCreate(savedInstanceState);
123            mNum = getArguments().getInt("num");
124
125            // Pick a style based on the num.
126            int style = DialogFragment.STYLE_NORMAL, theme = 0;
127            switch ((mNum-1)%6) {
128                case 1: style = DialogFragment.STYLE_NO_TITLE; break;
129                case 2: style = DialogFragment.STYLE_NO_FRAME; break;
130                case 3: style = DialogFragment.STYLE_NO_INPUT; break;
131                case 4: style = DialogFragment.STYLE_NORMAL; break;
132                case 5: style = DialogFragment.STYLE_NORMAL; break;
133                case 6: style = DialogFragment.STYLE_NO_TITLE; break;
134                case 7: style = DialogFragment.STYLE_NO_FRAME; break;
135                case 8: style = DialogFragment.STYLE_NORMAL; break;
136            }
137            switch ((mNum-1)%6) {
138                case 4: theme = android.R.style.Theme_Holo; break;
139                case 5: theme = android.R.style.Theme_Holo_Light_Dialog; break;
140                case 6: theme = android.R.style.Theme_Holo_Light; break;
141                case 7: theme = android.R.style.Theme_Holo_Light_Panel; break;
142                case 8: theme = android.R.style.Theme_Holo_Light; break;
143            }
144            setStyle(style, theme);
145        }
146
147        @Override
148        public View onCreateView(LayoutInflater inflater, ViewGroup container,
149                Bundle savedInstanceState) {
150            View v = inflater.inflate(R.layout.fragment_dialog, container, false);
151            View tv = v.findViewById(R.id.text);
152            ((TextView)tv).setText("Dialog #" + mNum + ": using style "
153                    + getNameForNum(mNum));
154
155            // Watch for button clicks.
156            Button button = (Button)v.findViewById(R.id.show);
157            button.setOnClickListener(new OnClickListener() {
158                public void onClick(View v) {
159                    // When button is clicked, call up to owning activity.
160                    ((FragmentDialog)getActivity()).showDialog();
161                }
162            });
163
164            return v;
165        }
166    }
167//END_INCLUDE(dialog)
168}
169