blob: d351eb4b75bc65e5d2c33efcfd5fc228f26de6cc (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.icons;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;
import org.mozilla.gecko.AboutPages;
import org.mozilla.gecko.util.StringUtils;
import java.util.HashSet;
/**
* Helper methods for icon related tasks.
*/
public class IconsHelper {
private static final String LOGTAG = "Gecko/IconsHelper";
// Mime types of things we are capable of decoding.
private static final HashSet<String> sDecodableMimeTypes = new HashSet<>();
// Mime types of things we are both capable of decoding and are container formats (May contain
// multiple different sizes of image)
private static final HashSet<String> sContainerMimeTypes = new HashSet<>();
static {
// MIME types extracted from http://filext.com - ostensibly all in-use mime types for the
// corresponding formats.
// ICO
sContainerMimeTypes.add("image/vnd.microsoft.icon");
sContainerMimeTypes.add("image/ico");
sContainerMimeTypes.add("image/icon");
sContainerMimeTypes.add("image/x-icon");
sContainerMimeTypes.add("text/ico");
sContainerMimeTypes.add("application/ico");
// Add supported container types to the set of supported types.
sDecodableMimeTypes.addAll(sContainerMimeTypes);
// PNG
sDecodableMimeTypes.add("image/png");
sDecodableMimeTypes.add("application/png");
sDecodableMimeTypes.add("application/x-png");
// GIF
sDecodableMimeTypes.add("image/gif");
// JPEG
sDecodableMimeTypes.add("image/jpeg");
sDecodableMimeTypes.add("image/jpg");
sDecodableMimeTypes.add("image/pipeg");
sDecodableMimeTypes.add("image/vnd.swiftview-jpeg");
sDecodableMimeTypes.add("application/jpg");
sDecodableMimeTypes.add("application/x-jpg");
// BMP
sDecodableMimeTypes.add("application/bmp");
sDecodableMimeTypes.add("application/x-bmp");
sDecodableMimeTypes.add("application/x-win-bitmap");
sDecodableMimeTypes.add("image/bmp");
sDecodableMimeTypes.add("image/x-bmp");
sDecodableMimeTypes.add("image/x-bitmap");
sDecodableMimeTypes.add("image/x-xbitmap");
sDecodableMimeTypes.add("image/x-win-bitmap");
sDecodableMimeTypes.add("image/x-windows-bitmap");
sDecodableMimeTypes.add("image/x-ms-bitmap");
sDecodableMimeTypes.add("image/x-ms-bmp");
sDecodableMimeTypes.add("image/ms-bmp");
}
/**
* Helper method to getIcon the default Favicon URL for a given pageURL. Generally: somewhere.com/favicon.ico
*
* @param pageURL Page URL for which a default Favicon URL is requested
* @return The default Favicon URL or null if no default URL could be guessed.
*/
@Nullable
public static String guessDefaultFaviconURL(String pageURL) {
if (TextUtils.isEmpty(pageURL)) {
return null;
}
// Special-casing for about: pages. The favicon for about:pages which don't provide a link tag
// is bundled in the database, keyed only by page URL, hence the need to return the page URL
// here. If the database ever migrates to stop being silly in this way, this can plausibly
// be removed.
if (AboutPages.isAboutPage(pageURL) || pageURL.startsWith("jar:")) {
return pageURL;
}
if (!StringUtils.isHttpOrHttps(pageURL)) {
// Guessing a default URL only makes sense for http(s) URLs.
return null;
}
try {
// Fall back to trying "someScheme:someDomain.someExtension/favicon.ico".
Uri uri = Uri.parse(pageURL);
if (uri.getAuthority().isEmpty()) {
return null;
}
return uri.buildUpon()
.path("favicon.ico")
.clearQuery()
.fragment("")
.build()
.toString();
} catch (Exception e) {
Log.d(LOGTAG, "Exception getting default favicon URL");
return null;
}
}
/**
* Helper function to determine if the provided mime type is that of a format that can contain
* multiple image types. At time of writing, the only such type is ICO.
* @param mimeType Mime type to check.
* @return true if the given mime type is a container type, false otherwise.
*/
public static boolean isContainerType(@NonNull String mimeType) {
return sContainerMimeTypes.contains(mimeType);
}
/**
* Helper function to determine if we can decode a particular mime type.
*
* @param imgType Mime type to check for decodability.
* @return false if the given mime type is certainly not decodable, true if it might be.
*/
public static boolean canDecodeType(@NonNull String imgType) {
return sDecodableMimeTypes.contains(imgType);
}
}
|
