StyleUtils.java revision d3714d293cbfa2b3cce35e9c6e7b87a2538abb83 
1/*
2 * Copyright (C) 2014 Google Inc.
3 * Licensed to The Android Open Source Project.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package com.android.mail.utils;
19
20import android.text.Spannable;
21import android.text.Spanned;
22import android.text.style.URLSpan;
23import android.view.View;
24import android.widget.TextView;
25
26import com.android.mail.text.LinkStyleSpan;
27import com.android.mail.text.UrlSpan;
28
29/**
30 * Utility class for styling UI.
31 */
32public class StyleUtils {
33
34    /**
35     * Removes any {@link android.text.style.URLSpan}s from the text view
36     * and replaces them with their non-underline version {@link com.android.mail.text.UrlSpan}.
37     */
38    public static void stripUnderlines(TextView textView) {
39        final Spannable spannable = (Spannable) textView.getText();
40        final URLSpan[] urls = textView.getUrls();
41
42        for (URLSpan span : urls) {
43            final int start = spannable.getSpanStart(span);
44            final int end = spannable.getSpanEnd(span);
45            spannable.removeSpan(span);
46            span = new UrlSpan(span.getURL());
47            spannable.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
48        }
49    }
50
51    /**
52     * Removes any {@link android.text.style.URLSpan}s from the text view and replaces them with a
53     * non-underline version {@link LinkStyleSpan} which calls the supplied listener when clicked.
54     */
55    public static void stripUnderlinesAndLinkUrls(TextView textView,
56                                                  View.OnClickListener onClickListener) {
57        final Spannable spannable = (Spannable) textView.getText();
58        final URLSpan[] urls = textView.getUrls();
59
60        for (URLSpan span : urls) {
61            final int start = spannable.getSpanStart(span);
62            final int end = spannable.getSpanEnd(span);
63            spannable.removeSpan(span);
64            spannable.setSpan(new LinkStyleSpan(onClickListener), start, end,
65                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
66        }
67    }
68
69    /**
70     * Removes any {@link android.text.style.URLSpan}s from the text view and replaces them with a
71     * non-underline version {@link LinkStyleSpan} that does nothing when clicked.
72     */
73    public static void stripUnderlinesAndUrl(TextView textView) {
74        stripUnderlinesAndLinkUrls(textView, null /* onClickListener */);
75    }
76}
77