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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
#ifndef __ACCESS_H__
#define __ACCESS_H__
/* access.h -- carry out accessibility checks
Copyright University of Toronto
Portions (c) 1998-2006 (W3C) MIT, ERCIM, Keio University
See tidy.h for the copyright notice.
*/
/*********************************************************************
* AccessibilityChecks
*
* Carries out processes for all accessibility checks. Traverses
* through all the content within the tree and evaluates the tags for
* accessibility.
*
* To perform the following checks, 'AccessibilityChecks' must be
* called AFTER the tree structure has been formed.
*
* If, in the command prompt, there is no specification of which
* accessibility priorities to check, no accessibility checks will be
* performed. (ie. '1' for priority 1, '2' for priorities 1 and 2,
* and '3') for priorities 1, 2 and 3.)
*
* Copyright University of Toronto
* Programmed by: Mike Lam and Chris Ridpath
* Modifications by : Terry Teague (TRT)
*
*********************************************************************/
#include "forward.h"
#if SUPPORT_ACCESSIBILITY_CHECKS
/* The accessibility checks to perform depending on user's desire.
1. priority 1
2. priority 1 & 2
3. priority 1, 2, & 3
*/
/* Determines if the client-side text link is found within the document
typedef struct AreaLinks
{
struct AreaLinks* next;
char* link;
Bool HasBeenFound;
} AreaLinks;
*/
enum {
TEXTBUF_SIZE=128u
};
struct _TidyAccessImpl;
typedef struct _TidyAccessImpl TidyAccessImpl;
struct _TidyAccessImpl
{
/* gets set from Tidy variable AccessibilityCheckLevel */
int PRIORITYCHK;
/* Number of characters that are found within the concatenated text */
int counter;
/* list of characters in the text nodes found within a container element */
tmbchar textNode[ TEXTBUF_SIZE ];
/* The list of characters found within one text node */
tmbchar text[ TEXTBUF_SIZE ];
/* Number of frame elements found within a frameset */
int numFrames;
/* Number of 'longdesc' attributes found within a frameset */
int HasCheckedLongDesc;
int CheckedHeaders;
int ListElements;
int OtherListElements;
/* For 'USEMAP' identifier */
Bool HasUseMap;
Bool HasName;
Bool HasMap;
/* For tracking nodes that are deleted from the original parse tree - TRT */
/* Node *access_tree; */
Bool HasTH;
Bool HasValidFor;
Bool HasValidId;
Bool HasValidRowHeaders;
Bool HasValidColumnHeaders;
Bool HasInvalidRowHeader;
Bool HasInvalidColumnHeader;
int ForID;
/* List containing map-links
AreaLinks* links;
AreaLinks* start;
AreaLinks* current;
*/
};
/*
Determines which error/warning message should be displayed,
depending on the error code that was called.
Offset accessibility error codes by FIRST_ACCESS_ERR to avoid conflict with
other error codes defined in message.h and used in localize.c.
*/
enum accessErrorCodes
{
FIRST_ACCESS_ERR = 1000, /* must be first */
/* [1.1.1.1] */ IMG_MISSING_ALT,
/* [1.1.1.2] */ IMG_ALT_SUSPICIOUS_FILENAME,
/* [1.1.1.3] */ IMG_ALT_SUSPICIOUS_FILE_SIZE,
/* [1.1.1.4] */ IMG_ALT_SUSPICIOUS_PLACEHOLDER,
/* [1.1.1.10] */ IMG_ALT_SUSPICIOUS_TOO_LONG,
/* [1.1.1.11] */ IMG_MISSING_ALT_BULLET,
/* [1.1.1.12] */ IMG_MISSING_ALT_H_RULE,
/* [1.1.2.1] */ IMG_MISSING_LONGDESC_DLINK,
/* [1.1.2.2] */ IMG_MISSING_DLINK,
/* [1.1.2.3] */ IMG_MISSING_LONGDESC,
/* [1.1.2.5] */ LONGDESC_NOT_REQUIRED,
/* [1.1.3.1] */ IMG_BUTTON_MISSING_ALT,
/* [1.1.4.1] */ APPLET_MISSING_ALT,
/* [1.1.5.1] */ OBJECT_MISSING_ALT,
/* [1.1.6.1] */ AUDIO_MISSING_TEXT_WAV,
/* [1.1.6.2] */ AUDIO_MISSING_TEXT_AU,
/* [1.1.6.3] */ AUDIO_MISSING_TEXT_AIFF,
/* [1.1.6.4] */ AUDIO_MISSING_TEXT_SND,
/* [1.1.6.5] */ AUDIO_MISSING_TEXT_RA,
/* [1.1.6.6] */ AUDIO_MISSING_TEXT_RM,
/* [1.1.8.1] */ FRAME_MISSING_LONGDESC,
/* [1.1.9.1] */ AREA_MISSING_ALT,
/* [1.1.10.1] */ SCRIPT_MISSING_NOSCRIPT,
/* [1.1.12.1] */ ASCII_REQUIRES_DESCRIPTION,
/* [1.2.1.1] */ IMG_MAP_SERVER_REQUIRES_TEXT_LINKS,
/* [1.4.1.1] */ MULTIMEDIA_REQUIRES_TEXT,
/* [1.5.1.1] */ IMG_MAP_CLIENT_MISSING_TEXT_LINKS,
/* [2.1.1.1] */ INFORMATION_NOT_CONVEYED_IMAGE,
/* [2.1.1.2] */ INFORMATION_NOT_CONVEYED_APPLET,
/* [2.1.1.3] */ INFORMATION_NOT_CONVEYED_OBJECT,
/* [2.1.1.4] */ INFORMATION_NOT_CONVEYED_SCRIPT,
/* [2.1.1.5] */ INFORMATION_NOT_CONVEYED_INPUT,
/* [2.2.1.1] */ COLOR_CONTRAST_TEXT,
/* [2.2.1.2] */ COLOR_CONTRAST_LINK,
/* [2.2.1.3] */ COLOR_CONTRAST_ACTIVE_LINK,
/* [2.2.1.4] */ COLOR_CONTRAST_VISITED_LINK,
/* [3.2.1.1] */ DOCTYPE_MISSING,
/* [3.3.1.1] */ STYLE_SHEET_CONTROL_PRESENTATION,
/* [3.5.1.1] */ HEADERS_IMPROPERLY_NESTED,
/* [3.5.2.1] */ POTENTIAL_HEADER_BOLD,
/* [3.5.2.2] */ POTENTIAL_HEADER_ITALICS,
/* [3.5.2.3] */ POTENTIAL_HEADER_UNDERLINE,
/* [3.5.3.1] */ HEADER_USED_FORMAT_TEXT,
/* [3.6.1.1] */ LIST_USAGE_INVALID_UL,
/* [3.6.1.2] */ LIST_USAGE_INVALID_OL,
/* [3.6.1.4] */ LIST_USAGE_INVALID_LI,
/* [4.1.1.1] */ INDICATE_CHANGES_IN_LANGUAGE,
/* [4.3.1.1] */ LANGUAGE_NOT_IDENTIFIED,
/* [4.3.1.1] */ LANGUAGE_INVALID,
/* [5.1.2.1] */ DATA_TABLE_MISSING_HEADERS,
/* [5.1.2.2] */ DATA_TABLE_MISSING_HEADERS_COLUMN,
/* [5.1.2.3] */ DATA_TABLE_MISSING_HEADERS_ROW,
/* [5.2.1.1] */ DATA_TABLE_REQUIRE_MARKUP_COLUMN_HEADERS,
/* [5.2.1.2] */ DATA_TABLE_REQUIRE_MARKUP_ROW_HEADERS,
/* [5.3.1.1] */ LAYOUT_TABLES_LINEARIZE_PROPERLY,
/* [5.4.1.1] */ LAYOUT_TABLE_INVALID_MARKUP,
/* [5.5.1.1] */ TABLE_MISSING_SUMMARY,
/* [5.5.1.2] */ TABLE_SUMMARY_INVALID_NULL,
/* [5.5.1.3] */ TABLE_SUMMARY_INVALID_SPACES,
/* [5.5.1.6] */ TABLE_SUMMARY_INVALID_PLACEHOLDER,
/* [5.5.2.1] */ TABLE_MISSING_CAPTION,
/* [5.6.1.1] */ TABLE_MAY_REQUIRE_HEADER_ABBR,
/* [5.6.1.2] */ TABLE_MAY_REQUIRE_HEADER_ABBR_NULL,
/* [5.6.1.3] */ TABLE_MAY_REQUIRE_HEADER_ABBR_SPACES,
/* [6.1.1.1] */ STYLESHEETS_REQUIRE_TESTING_LINK,
/* [6.1.1.2] */ STYLESHEETS_REQUIRE_TESTING_STYLE_ELEMENT,
/* [6.1.1.3] */ STYLESHEETS_REQUIRE_TESTING_STYLE_ATTR,
/* [6.2.1.1] */ FRAME_SRC_INVALID,
/* [6.2.2.1] */ TEXT_EQUIVALENTS_REQUIRE_UPDATING_APPLET,
/* [6.2.2.2] */ TEXT_EQUIVALENTS_REQUIRE_UPDATING_SCRIPT,
/* [6.2.2.3] */ TEXT_EQUIVALENTS_REQUIRE_UPDATING_OBJECT,
/* [6.3.1.1] */ PROGRAMMATIC_OBJECTS_REQUIRE_TESTING_SCRIPT,
/* [6.3.1.2] */ PROGRAMMATIC_OBJECTS_REQUIRE_TESTING_OBJECT,
/* [6.3.1.3] */ PROGRAMMATIC_OBJECTS_REQUIRE_TESTING_EMBED,
/* [6.3.1.4] */ PROGRAMMATIC_OBJECTS_REQUIRE_TESTING_APPLET,
/* [6.5.1.1] */ FRAME_MISSING_NOFRAMES,
/* [6.5.1.2] */ NOFRAMES_INVALID_NO_VALUE,
/* [6.5.1.3] */ NOFRAMES_INVALID_CONTENT,
/* [6.5.1.4] */ NOFRAMES_INVALID_LINK,
/* [7.1.1.1] */ REMOVE_FLICKER_SCRIPT,
/* [7.1.1.2] */ REMOVE_FLICKER_OBJECT,
/* [7.1.1.3] */ REMOVE_FLICKER_EMBED,
/* [7.1.1.4] */ REMOVE_FLICKER_APPLET,
/* [7.1.1.5] */ REMOVE_FLICKER_ANIMATED_GIF,
/* [7.2.1.1] */ REMOVE_BLINK_MARQUEE,
/* [7.4.1.1] */ REMOVE_AUTO_REFRESH,
/* [7.5.1.1] */ REMOVE_AUTO_REDIRECT,
/* [8.1.1.1] */ ENSURE_PROGRAMMATIC_OBJECTS_ACCESSIBLE_SCRIPT,
/* [8.1.1.2] */ ENSURE_PROGRAMMATIC_OBJECTS_ACCESSIBLE_OBJECT,
/* [8.1.1.3] */ ENSURE_PROGRAMMATIC_OBJECTS_ACCESSIBLE_APPLET,
/* [8.1.1.4] */ ENSURE_PROGRAMMATIC_OBJECTS_ACCESSIBLE_EMBED,
/* [9.1.1.1] */ IMAGE_MAP_SERVER_SIDE_REQUIRES_CONVERSION,
/* [9.3.1.1] */ SCRIPT_NOT_KEYBOARD_ACCESSIBLE_ON_MOUSE_DOWN,
/* [9.3.1.2] */ SCRIPT_NOT_KEYBOARD_ACCESSIBLE_ON_MOUSE_UP,
/* [9.3.1.3] */ SCRIPT_NOT_KEYBOARD_ACCESSIBLE_ON_CLICK,
/* [9.3.1.4] */ SCRIPT_NOT_KEYBOARD_ACCESSIBLE_ON_MOUSE_OVER,
/* [9.3.1.5] */ SCRIPT_NOT_KEYBOARD_ACCESSIBLE_ON_MOUSE_OUT,
/* [9.3.1.6] */ SCRIPT_NOT_KEYBOARD_ACCESSIBLE_ON_MOUSE_MOVE,
/* [10.1.1.1] */ NEW_WINDOWS_REQUIRE_WARNING_NEW,
/* [10.1.1.2] */ NEW_WINDOWS_REQUIRE_WARNING_BLANK,
/* [10.2.1.1] */ LABEL_NEEDS_REPOSITIONING_BEFORE_INPUT,
/* [10.2.1.2] */ LABEL_NEEDS_REPOSITIONING_AFTER_INPUT,
/* [10.4.1.1] */ FORM_CONTROL_REQUIRES_DEFAULT_TEXT,
/* [10.4.1.2] */ FORM_CONTROL_DEFAULT_TEXT_INVALID_NULL,
/* [10.4.1.3] */ FORM_CONTROL_DEFAULT_TEXT_INVALID_SPACES,
/* [11.2.1.1] */ REPLACE_DEPRECATED_HTML_APPLET,
/* [11.2.1.2] */ REPLACE_DEPRECATED_HTML_BASEFONT,
/* [11.2.1.3] */ REPLACE_DEPRECATED_HTML_CENTER,
/* [11.2.1.4] */ REPLACE_DEPRECATED_HTML_DIR,
/* [11.2.1.5] */ REPLACE_DEPRECATED_HTML_FONT,
/* [11.2.1.6] */ REPLACE_DEPRECATED_HTML_ISINDEX,
/* [11.2.1.7] */ REPLACE_DEPRECATED_HTML_MENU,
/* [11.2.1.8] */ REPLACE_DEPRECATED_HTML_S,
/* [11.2.1.9] */ REPLACE_DEPRECATED_HTML_STRIKE,
/* [11.2.1.10] */ REPLACE_DEPRECATED_HTML_U,
/* [12.1.1.1] */ FRAME_MISSING_TITLE,
/* [12.1.1.2] */ FRAME_TITLE_INVALID_NULL,
/* [12.1.1.3] */ FRAME_TITLE_INVALID_SPACES,
/* [12.4.1.1] */ ASSOCIATE_LABELS_EXPLICITLY,
/* [12.4.1.2] */ ASSOCIATE_LABELS_EXPLICITLY_FOR,
/* [12.4.1.3] */ ASSOCIATE_LABELS_EXPLICITLY_ID,
/* [13.1.1.1] */ LINK_TEXT_NOT_MEANINGFUL,
/* [13.1.1.2] */ LINK_TEXT_MISSING,
/* [13.1.1.3] */ LINK_TEXT_TOO_LONG,
/* [13.1.1.4] */ LINK_TEXT_NOT_MEANINGFUL_CLICK_HERE,
/* [13.1.1.5] */ LINK_TEXT_NOT_MEANINGFUL_MORE,
/* [13.1.1.6] */ LINK_TEXT_NOT_MEANINGFUL_FOLLOW_THIS,
/* [13.2.1.1] */ METADATA_MISSING,
/* [13.2.1.2] */ METADATA_MISSING_LINK,
/* [13.2.1.3] */ METADATA_MISSING_REDIRECT_AUTOREFRESH,
/* [13.10.1.1] */ SKIPOVER_ASCII_ART,
LAST_ACCESS_ERR /* must be last */
};
void TY_(AccessibilityHelloMessage)( TidyDocImpl* doc );
void TY_(DisplayHTMLTableAlgorithm)( TidyDocImpl* doc );
/************************************************************
* AccessibilityChecks
*
* Traverses through the individual nodes of the tree
* and checks attributes and elements for accessibility.
* after the tree structure has been formed.
************************************************************/
void TY_(AccessibilityChecks)( TidyDocImpl* doc );
#endif /* SUPPORT_ACCESSIBILITY_CHECKS */
#endif /* __ACCESS_H__ */
|
