1/*
2 * Copyright (C) 2016 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.settings.support;
18
19import android.accounts.Account;
20import android.app.Activity;
21import android.app.AlertDialog;
22import android.app.Dialog;
23import android.app.DialogFragment;
24import android.content.DialogInterface;
25import android.os.Bundle;
26import android.text.Annotation;
27import android.text.Spannable;
28import android.text.Spanned;
29import android.text.TextPaint;
30import android.text.TextUtils;
31import android.text.style.URLSpan;
32import android.view.LayoutInflater;
33import android.view.View;
34import android.widget.CheckBox;
35import android.widget.TextView;
36
37import com.android.internal.annotations.VisibleForTesting;
38import com.android.internal.logging.nano.MetricsProto;
39import com.android.settings.R;
40import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
41import com.android.settings.overlay.FeatureFactory;
42import com.android.settings.overlay.SupportFeatureProvider;
43
44/**
45 * {@link DialogFragment} for support disclaimer.
46 */
47public final class SupportDisclaimerDialogFragment extends InstrumentedDialogFragment
48        implements DialogInterface.OnClickListener {
49
50    public static final String TAG = "SupportDisclaimerDialog";
51    public static final String EXTRA_TYPE = "extra_type";
52    public static final String EXTRA_ACCOUNT = "extra_account";
53
54    public static SupportDisclaimerDialogFragment newInstance(Account account,
55            @SupportFeatureProvider.SupportType int type) {
56        final SupportDisclaimerDialogFragment fragment = new SupportDisclaimerDialogFragment();
57        final Bundle bundle = new Bundle(2);
58        bundle.putParcelable(SupportDisclaimerDialogFragment.EXTRA_ACCOUNT, account);
59        bundle.putInt(SupportDisclaimerDialogFragment.EXTRA_TYPE, type);
60        fragment.setArguments(bundle);
61        return fragment;
62    }
63
64    @Override
65    public Dialog onCreateDialog(Bundle savedInstanceState) {
66        final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity())
67                .setTitle(R.string.support_disclaimer_title)
68                .setPositiveButton(android.R.string.ok, this)
69                .setNegativeButton(android.R.string.cancel, this);
70        final View content = LayoutInflater.from(builder.getContext())
71                .inflate(R.layout.support_disclaimer_content, null);
72        final TextView disclaimer = (TextView) content.findViewById(R.id.support_disclaimer_text);
73        final Activity activity = getActivity();
74        final SupportFeatureProvider supportFeatureProvider =
75                FeatureFactory.getFactory(activity).getSupportFeatureProvider(activity);
76
77        // sets the two links that go to privacy policy and terms of service
78        disclaimer.setText(supportFeatureProvider.getDisclaimerStringResId());
79        Spannable viewText = (Spannable) disclaimer.getText();
80        stripUnderlines(viewText);
81        SystemInformationSpan.linkify(viewText, this);
82        // sets the link that launches a dialog to expose the signals we are sending
83        return builder
84                .setView(content)
85                .create();
86    }
87
88    @Override
89    public void onClick(DialogInterface dialog, int which) {
90        if (which == Dialog.BUTTON_NEGATIVE) {
91            mMetricsFeatureProvider.action(getContext(),
92                    MetricsProto.MetricsEvent.ACTION_SUPPORT_DISCLAIMER_CANCEL);
93            return;
94        }
95        final Activity activity = getActivity();
96        final CheckBox doNotShow =
97                (CheckBox) getDialog().findViewById(R.id.support_disclaimer_do_not_show_again);
98        final boolean isChecked = doNotShow.isChecked();
99        final SupportFeatureProvider supportFeatureProvider =
100                FeatureFactory.getFactory(activity).getSupportFeatureProvider(activity);
101        supportFeatureProvider.setShouldShowDisclaimerDialog(getContext(), !isChecked);
102        final Bundle bundle = getArguments();
103        if (isChecked) {
104            mMetricsFeatureProvider.action(activity,
105                    MetricsProto.MetricsEvent.ACTION_SKIP_DISCLAIMER_SELECTED);
106        }
107        mMetricsFeatureProvider.action(activity,
108                MetricsProto.MetricsEvent.ACTION_SUPPORT_DISCLAIMER_OK);
109        supportFeatureProvider.startSupport(getActivity(),
110                bundle.getParcelable(EXTRA_ACCOUNT), bundle.getInt(EXTRA_TYPE));
111    }
112
113    @Override
114    public void onCancel(DialogInterface dialog) {
115        super.onCancel(dialog);
116        mMetricsFeatureProvider.action(getContext(),
117                MetricsProto.MetricsEvent.ACTION_SUPPORT_DISCLAIMER_CANCEL);
118    }
119
120    /**
121     * Removes the underlines of {@link android.text.style.URLSpan}s.
122     */
123    private static void stripUnderlines(Spannable input) {
124        final URLSpan[] urls = input.getSpans(0, input.length(), URLSpan.class);
125
126        for (URLSpan span : urls) {
127            final int start = input.getSpanStart(span);
128            final int end = input.getSpanEnd(span);
129            if (!TextUtils.isEmpty(span.getURL())) {
130                input.removeSpan(span);
131                input.setSpan(new NoUnderlineUrlSpan(span.getURL()), start, end,
132                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
133            }
134        }
135    }
136
137    @Override
138    public int getMetricsCategory() {
139        return MetricsProto.MetricsEvent.DIALOG_SUPPORT_DISCLAIMER;
140    }
141
142    /**
143     * A {@link URLSpan} that doesn't decorate the link with underline.
144     */
145    public static class NoUnderlineUrlSpan extends URLSpan {
146
147        public NoUnderlineUrlSpan(String url) {
148            super(url);
149        }
150
151        @Override
152        public void updateDrawState(TextPaint ds) {
153            super.updateDrawState(ds);
154            ds.setUnderlineText(false);
155        }
156    }
157
158    /**
159     * A {@link URLSpan} that opens a dialog when clicked
160     */
161    public static class SystemInformationSpan extends URLSpan {
162
163        private static final String ANNOTATION_URL = "url";
164        private final DialogFragment mDialog;
165        private SupportFeatureProvider mSupport;
166
167        public SystemInformationSpan(DialogFragment parent) {
168            // sets the url to empty string so we can prevent the NoUnderlineUrlSpan from stripping
169            // this one
170            super("");
171            mSupport  = FeatureFactory.getFactory(parent.getContext())
172                    .getSupportFeatureProvider(parent.getContext());
173            mDialog = parent;
174        }
175
176        @Override
177        public void onClick(View widget) {
178            Activity activity =  mDialog.getActivity();
179            if (mSupport != null && activity != null) {
180                // launch the system info fragment
181                mSupport.launchSystemInfoFragment(mDialog.getArguments(),
182                        activity.getFragmentManager());
183
184                // dismiss this fragment
185                mDialog.dismiss();
186            }
187        }
188
189        @Override
190        public void updateDrawState(TextPaint ds) {
191            super.updateDrawState(ds);
192            // remove underline
193            ds.setUnderlineText(false);
194        }
195
196        /**
197         * This method takes a string and turns it into a url span that will launch a
198         * SupportSystemInformationDialogFragment
199         * @param msg The text to turn into a link
200         * @param parent The dialog the text is in
201         * @return A CharSequence containing the original text content as a url
202         */
203        public static CharSequence linkify(Spannable msg, DialogFragment parent) {
204            Annotation[] spans = msg.getSpans(0, msg.length(), Annotation.class);
205            for (Annotation annotation : spans) {
206                int start = msg.getSpanStart(annotation);
207                int end = msg.getSpanEnd(annotation);
208                if (ANNOTATION_URL.equals(annotation.getValue())) {
209                    SystemInformationSpan link = new SystemInformationSpan(parent);
210                    msg.removeSpan(annotation);
211                    msg.setSpan(link, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
212                }
213            }
214            return msg;
215        }
216
217        @VisibleForTesting
218        public void setSupportProvider(SupportFeatureProvider prov) {
219            mSupport = prov;
220        }
221    }
222}
223