docs/dev-progress.html

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   6 <meta name="description" content="Tables detailing HTML element and CSS property implementation coverage in HTML Purifier." />
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   8
   9 <title>Implementation Progress - HTML Purifier</title>
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  17
  18 .impl-yes {background:#9D9;}
  19 .impl-partial {background:#FFA;}
  20 .impl-no {background:#CCC;}
  21
  22 .danger {color:#600;}
  23 .css1 {color:#060;}
  24 .required {font-weight:bold;}
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  30
  31 <h1>Implementation Progress</h1>
  32
  33 <div id="filing">Filed under Development</div>
  34 <div id="index">Return to the <a href="index.html">index</a>.</div>
  35 <div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
  36
  37 <p>
  38   <strong>Warning:</strong> This table is kept for historical purposes and
  39   is not being actively updated.
  40 </p>
  41
  42 <h2>Key</h2>
  43
  44 <table cellspacing="0"><tbody>
  45 <tr><td class="impl-yes">Implemented</td></tr>
  46 <tr><td class="impl-partial">Partially implemented</td></tr>
  47 <tr><td class="impl-no">Not priority to implement</td></tr>
  48 <tr><td class="danger">Dangerous attribute/property</td></tr>
  49 <tr><td class="css1">Present in CSS1</td></tr>
  50 <tr><td class="feature">Feature, requires extra work</td></tr>
  51 </tbody></table>
  52
  53 <h2>CSS</h2>
  54
  55 <table cellspacing="0">
  56
  57 <thead>
  58 <tr><th>Name</th><th>Notes</th></tr>
  59 </thead>
  60
  61 <!--
  62 <tr><td>-</td><td>-</td></tr>
  63 -->
  64
  65 <tbody>
  66 <tr><th colspan="2">Standard</th></tr>
  67 <tr class="css1 impl-yes"><td>background-color</td><td>COMPOSITE(&lt;color&gt;, transparent)</td></tr>
  68 <tr class="css1 impl-yes"><td>background</td><td>SHORTHAND, currently alias for background-color</td></tr>
  69 <tr class="css1 impl-yes"><td>border</td><td>SHORTHAND, MULTIPLE</td></tr>
  70 <tr class="css1 impl-yes"><td>border-color</td><td>MULTIPLE</td></tr>
  71 <tr class="css1 impl-yes"><td>border-style</td><td>MULTIPLE</td></tr>
  72 <tr class="css1 impl-yes"><td>border-width</td><td>MULTIPLE</td></tr>
  73 <tr class="css1 impl-yes"><td>border-*</td><td>SHORTHAND</td></tr>
  74 <tr class="impl-yes"><td>border-*-color</td><td>COMPOSITE(&lt;color&gt;, transparent)</td></tr>
  75 <tr class="impl-yes"><td>border-*-style</td><td>ENUM(none, hidden, dotted, dashed,
  76     solid, double, groove, ridge, inset, outset)</td></tr>
  77 <tr class="css1 impl-yes"><td>border-*-width</td><td>COMPOSITE(&lt;length&gt;, thin, medium, thick)</td></tr>
  78 <tr class="css1 impl-yes"><td>clear</td><td>ENUM(none, left, right, both)</td></tr>
  79 <tr class="css1 impl-yes"><td>color</td><td>&lt;color&gt;</td></tr>
  80 <tr class="css1 impl-yes"><td>float</td><td>ENUM(left, right, none), May require layout
  81     precautions with clear</td></tr>
  82 <tr class="css1 impl-yes"><td>font</td><td>SHORTHAND</td></tr>
  83 <tr class="css1 impl-yes"><td>font-family</td><td>CSS validator may complain if fallback font
  84     family not specified</td></tr>
  85 <tr class="css1 impl-yes"><td>font-size</td><td>COMPOSITE(&lt;absolute-size&gt;,
  86     &lt;relative-size&gt;, &lt;length&gt;, &lt;percentage&gt;)</td></tr>
  87 <tr class="css1 impl-yes"><td>font-style</td><td>ENUM(normal, italic, oblique)</td></tr>
  88 <tr class="css1 impl-yes"><td>font-variant</td><td>ENUM(normal, small-caps)</td></tr>
  89 <tr class="css1 impl-yes"><td>font-weight</td><td>ENUM(normal, bold, bolder, lighter,
  90     100, 200, 300, 400, 500, 600, 700, 800, 900), maybe special code for
  91     in-between integers</td></tr>
  92 <tr class="css1 impl-yes"><td>letter-spacing</td><td>COMPOSITE(&lt;length&gt;, normal)</td></tr>
  93 <tr class="css1 impl-yes"><td>line-height</td><td>COMPOSITE(&lt;number&gt;,
  94     &lt;length&gt;, &lt;percentage&gt;, normal)</td></tr>
  95 <tr class="css1 impl-yes"><td>list-style-position</td><td>ENUM(inside, outside),
  96     Strange behavior in browsers</td></tr>
  97 <tr class="css1 impl-yes"><td>list-style-type</td><td>ENUM(...),
  98     Well-supported values are: disc, circle, square,
  99     decimal, lower-roman, upper-roman, lower-alpha and upper-alpha. See also
 100     CSS 3. Mostly IE lack of support.</td></tr>
 101 <tr class="css1 impl-yes"><td>list-style</td><td>SHORTHAND</td></tr>
 102 <tr class="css1 impl-yes"><td>margin</td><td>MULTIPLE</td></tr>
 103 <tr class="css1 impl-yes"><td>margin-*</td><td>COMPOSITE(&lt;length&gt;,
 104     &lt;percentage&gt;, auto)</td></tr>
 105 <tr class="css1 impl-yes"><td>padding</td><td>MULTIPLE</td></tr>
 106 <tr class="css1 impl-yes"><td>padding-*</td><td>COMPOSITE(&lt;length&gt;(positive),
 107     &lt;percentage&gt;(positive))</td></tr>
 108 <tr class="css1 impl-yes"><td>text-align</td><td>ENUM(left, right,
 109     center, justify)</td></tr>
 110 <tr class="css1 impl-yes"><td>text-decoration</td><td>No blink (argh my eyes), not
 111     enum, can be combined (composite sorta): underline, overline,
 112     line-through</td></tr>
 113 <tr class="css1 impl-yes"><td>text-indent</td><td>COMPOSITE(&lt;length&gt;,
 114     &lt;percentage&gt;)</td></tr>
 115 <tr class="css1 impl-yes"><td>text-transform</td><td>ENUM(capitalize, uppercase,
 116     lowercase, none)</td></tr>
 117 <tr class="css1 impl-yes"><td>width</td><td>COMPOSITE(&lt;length&gt;,
 118     &lt;percentage&gt;, auto), Interesting</td></tr>
 119 <tr class="css1 impl-yes"><td>word-spacing</td><td>COMPOSITE(&lt;length&gt;, auto),
 120     IE 5 no support</td></tr>
 121 </tbody>
 122
 123 <tbody>
 124 <tr><th colspan="2">Table</th></tr>
 125 <tr class="impl-yes"><td>border-collapse</td><td>ENUM(collapse, seperate)</td></tr>
 126 <tr class="impl-yes"><td>border-space</td><td>MULTIPLE</td></tr>
 127 <tr class="impl-yes"><td>caption-side</td><td>ENUM(top, bottom)</td></tr>
 128 <tr class="feature"><td>empty-cells</td><td>ENUM(show, hide), No IE support makes this useless,
 129     possible fix with &amp;nbsp;? Unknown release milestone.</td></tr>
 130 <tr class="impl-yes"><td>table-layout</td><td>ENUM(auto, fixed)</td></tr>
 131 <tr class="impl-yes css1"><td>vertical-align</td><td>COMPOSITE(ENUM(baseline, sub,
 132     super, top, text-top, middle, bottom, text-bottom), &lt;percentage&gt;,
 133     &lt;length&gt;) Also applies to others with explicit height</td></tr>
 134 </tbody>
 135
 136 <tbody>
 137 <tr><th colspan="2">Absolute positioning, unknown release milestone</th></tr>
 138 <tr class="danger impl-no"><td>bottom</td><td rowspan="4">Dangerous, must be non-negative to even be considered,
 139     but it's still possible to arbitrarily position by running over.</td></tr>
 140 <tr class="danger impl-no"><td>left</td></tr>
 141 <tr class="danger impl-no"><td>right</td></tr>
 142 <tr class="danger impl-no"><td>top</td></tr>
 143 <tr class="impl-no"><td>clip</td><td>-</td></tr>
 144 <tr class="danger impl-no"><td>position</td><td>ENUM(static, relative, absolute, fixed)
 145     relative not absolute?</td></tr>
 146 <tr class="danger impl-no"><td>z-index</td><td>Dangerous</td></tr>
 147 </tbody>
 148
 149 <tbody>
 150 <tr><th colspan="2">Unknown</th></tr>
 151 <tr class="danger css1 impl-yes"><td>background-image</td><td>Dangerous</td></tr>
 152 <tr class="css1 impl-yes"><td>background-attachment</td><td>ENUM(scroll, fixed),
 153     Depends on background-image</td></tr>
 154 <tr class="css1 impl-yes"><td>background-position</td><td>Depends on background-image</td></tr>
 155 <tr class="danger impl-no"><td>cursor</td><td>Dangerous but fluffy</td></tr>
 156 <tr class="danger impl-yes"><td>display</td><td>ENUM(...), Dangerous but interesting;
 157     will not implement list-item, run-in (Opera only) or table (no IE);
 158     inline-block has incomplete IE6 support and requires -moz-inline-box
 159     for Mozilla. Unknown target milestone.</td></tr>
 160 <tr class="css1 impl-yes"><td>height</td><td>Interesting, why use it? Unknown target milestone.</td></tr>
 161 <tr class="danger css1 impl-yes"><td>list-style-image</td><td>Dangerous?</td></tr>
 162 <tr class="impl-no"><td>max-height</td><td rowspan="4">No IE 5/6</td></tr>
 163 <tr class="impl-no"><td>min-height</td></tr>
 164 <tr class="impl-no"><td>max-width</td></tr>
 165 <tr class="impl-no"><td>min-width</td></tr>
 166 <tr class="impl-no"><td>orphans</td><td>No IE support</td></tr>
 167 <tr class="impl-no"><td>widows</td><td>No IE support</td></tr>
 168 <tr><td>overflow</td><td>ENUM, IE 5/6 almost (remove visible if set). Unknown target milestone.</td></tr>
 169 <tr><td>page-break-after</td><td>ENUM(auto, always, avoid, left, right),
 170     IE 5.5/6 and Opera. Unknown target milestone.</td></tr>
 171 <tr><td>page-break-before</td><td>ENUM(auto, always, avoid, left, right),
 172     Mostly supported. Unknown target milestone.</td></tr>
 173 <tr><td>page-break-inside</td><td>ENUM(avoid, auto), Opera only. Unknown target milestone.</td></tr>
 174 <tr class="impl-no"><td>quotes</td><td>May be dropped from CSS2, fairly useless for inline context</td></tr>
 175 <tr class="danger impl-yes"><td>visibility</td><td>ENUM(visible, hidden, collapse),
 176     Dangerous</td></tr>
 177 <tr class="css1 feature impl-partial"><td>white-space</td><td>ENUM(normal, pre, nowrap, pre-wrap,
 178     pre-line), Spotty implementation:
 179     pre (no IE 5/6), <em>nowrap</em> (no IE 5, supported),
 180     pre-wrap (only Opera), pre-line (no support). Fixable? Unknown target milestone.</td></tr>
 181 </tbody>
 182
 183 <tbody class="impl-no">
 184 <tr><th colspan="2">Aural</th></tr>
 185 <tr><td>azimuth</td><td>-</td></tr>
 186 <tr><td>cue</td><td>-</td></tr>
 187 <tr><td>cue-after</td><td>-</td></tr>
 188 <tr><td>cue-before</td><td>-</td></tr>
 189 <tr><td>elevation</td><td>-</td></tr>
 190 <tr><td>pause-after</td><td>-</td></tr>
 191 <tr><td>pause-before</td><td>-</td></tr>
 192 <tr><td>pause</td><td>-</td></tr>
 193 <tr><td>pitch-range</td><td>-</td></tr>
 194 <tr><td>pitch</td><td>-</td></tr>
 195 <tr><td>play-during</td><td>-</td></tr>
 196 <tr><td>richness</td><td>-</td></tr>
 197 <tr><td>speak-header</td><td>Table related</td></tr>
 198 <tr><td>speak-numeral</td><td>-</td></tr>
 199 <tr><td>speak-punctuation</td><td>-</td></tr>
 200 <tr><td>speak</td><td>-</td></tr>
 201 <tr><td>speech-rate</td><td>-</td></tr>
 202 <tr><td>stress</td><td>-</td></tr>
 203 <tr><td>voice-family</td><td>-</td></tr>
 204 <tr><td>volume</td><td>-</td></tr>
 205 </tbody>
 206
 207 <tbody class="impl-no">
 208 <tr><th colspan="2">Will not implement</th></tr>
 209 <tr><td>content</td><td>Not applicable for inline styles</td></tr>
 210 <tr><td>counter-increment</td><td>Needs content, Opera only</td></tr>
 211 <tr><td>counter-reset</td><td>Needs content, Opera only</td></tr>
 212 <tr><td>direction</td><td>No support</td></tr>
 213 <tr><td>outline-color</td><td rowspan="4">IE Mac and Opera on outside,
 214 Mozilla on inside and needs -moz-outline, no IE support.</td></tr>
 215     <tr><td>outline-style</td></tr>
 216     <tr><td>outline-width</td></tr>
 217     <tr><td>outline</td></tr>
 218 <tr><td>unicode-bidi</td><td>No support</td></tr>
 219 </tbody>
 220
 221 </table>
 222
 223 <h2>Interesting Attributes</h2>
 224
 225 <table cellspacing="0">
 226
 227 <thead>
 228 <tr><th>Attribute</th><th>Tags</th><th>Notes</th></tr>
 229 </thead>
 230
 231 <!--
 232 <tr><th></th></tr>
 233 <tbody>
 234 <tr><td>-</td><td>-</td><td>-</td></tr>
 235 </tbody>
 236 -->
 237
 238 <tbody>
 239 <tr><th colspan="3">CSS</th></tr>
 240 <tr class="impl-yes"><td>style</td><td>All</td><td>Parser is reasonably functional. Status here doesn't count individual properties.</td></tr>
 241 </tbody>
 242
 243 <tbody>
 244 <tr><th colspan="3">Questionable</th></tr>
 245 <tr class="impl-no"><td>accesskey</td><td>A</td><td>May interfere with main interface</td></tr>
 246 <tr class="impl-no"><td>tabindex</td><td>A</td><td>May interfere with main interface</td></tr>
 247 <tr class="impl-yes"><td>target</td><td>A</td><td>Config enabled, only useful for frame layouts, disallowed in strict</td></tr>
 248 </tbody>
 249
 250 <tbody>
 251 <tr><th colspan="3">Miscellaneous</th></tr>
 252 <tr><td>datetime</td><td>DEL, INS</td><td>No visible effect, ISO format</td></tr>
 253 <tr class="impl-yes"><td>rel</td><td>A</td><td>Largely user-defined: nofollow, tag (see microformats)</td></tr>
 254 <tr class="impl-yes"><td>rev</td><td>A</td><td>Largely user-defined: vote-*</td></tr>
 255 <tr class="feature"><td>axis</td><td>TD, TH</td><td>W3C only: No browser implementation</td></tr>
 256 <tr class="feature"><td>char</td><td>COL, COLGROUP, TBODY, TD, TFOOT, TH, THEAD, TR</td><td>W3C only: No browser implementation</td></tr>
 257 <tr class="feature"><td>headers</td><td>TD, TH</td><td>W3C only: No browser implementation</td></tr>
 258 <tr class="feature"><td>scope</td><td>TD, TH</td><td>W3C only: No browser implementation</td></tr>
 259 </tbody>
 260
 261 <tbody class="impl-yes">
 262 <tr><th colspan="3">URI</th></tr>
 263 <tr><td rowspan="2">cite</td><td>BLOCKQUOTE, Q</td><td>For attribution</td></tr>
 264     <tr><td>DEL, INS</td><td>Link to explanation why it changed</td></tr>
 265 <tr><td>href</td><td>A</td><td>-</td></tr>
 266 <tr><td>longdesc</td><td>IMG</td><td>-</td></tr>
 267 <tr class="required"><td>src</td><td>IMG</td><td>Required</td></tr>
 268 </tbody>
 269
 270 <tbody>
 271 <tr><th colspan="3">Transform</th></tr>
 272 <tr class="impl-yes"><td rowspan="5">align</td><td>CAPTION</td><td>'caption-side' for top/bottom, 'text-align' for left/right</td></tr>
 273     <tr class="impl-yes"><td>IMG</td><td rowspan="3">See specimens/html-align-to-css.html</td></tr>
 274     <tr class="impl-yes"><td>TABLE</td></tr>
 275     <tr class="impl-yes"><td>HR</td></tr>
 276     <tr class="impl-yes"><td>H1, H2, H3, H4, H5, H6, P</td><td>Equivalent style 'text-align'</td></tr>
 277 <tr class="required impl-yes"><td>alt</td><td>IMG</td><td>Required, insert image filename if src is present or default invalid image text</td></tr>
 278 <tr class="impl-yes"><td rowspan="3">bgcolor</td><td>TABLE</td><td>Superset style 'background-color'</td></tr>
 279     <tr class="impl-yes"><td>TR</td><td>Superset style 'background-color'</td></tr>
 280     <tr class="impl-yes"><td>TD, TH</td><td>Superset style 'background-color'</td></tr>
 281 <tr class="impl-yes"><td>border</td><td>IMG</td><td>Equivalent style <code>border:[number]px solid</code></td></tr>
 282 <tr class="impl-yes"><td>clear</td><td>BR</td><td>Near-equiv style 'clear', transform 'all' into 'both'</td></tr>
 283 <tr class="impl-no"><td>compact</td><td>DL, OL, UL</td><td>Boolean, needs custom CSS class; rarely used anyway</td></tr>
 284 <tr class="required impl-yes"><td>dir</td><td>BDO</td><td>Required, insert ltr (or configuration value) if none</td></tr>
 285 <tr class="impl-yes"><td>height</td><td>TD, TH</td><td>Near-equiv style 'height', needs px suffix if original was in pixels</td></tr>
 286 <tr class="impl-yes"><td>hspace</td><td>IMG</td><td>Near-equiv styles 'margin-top' and 'margin-bottom', needs px suffix</td></tr>
 287 <tr class="impl-yes"><td>lang</td><td>*</td><td>Copy value to xml:lang</td></tr>
 288 <tr class="impl-yes"><td rowspan="2">name</td><td>IMG</td><td>Turn into ID</td></tr>
 289     <tr class="impl-yes"><td>A</td><td>Turn into ID</td></tr>
 290 <tr class="impl-yes"><td>noshade</td><td>HR</td><td>Boolean, style 'border-style:solid;'</td></tr>
 291 <tr class="impl-yes"><td>nowrap</td><td>TD, TH</td><td>Boolean, style 'white-space:nowrap;' (not compat with IE5)</td></tr>
 292 <tr class="impl-yes"><td>size</td><td>HR</td><td>Near-equiv 'height', needs px suffix if original was pixels</td></tr>
 293 <tr class="required impl-yes"><td>src</td><td>IMG</td><td>Required, insert blank or default img if not set</td></tr>
 294 <tr class="impl-yes"><td>start</td><td>OL</td><td>Poorly supported 'counter-reset', allowed in loose, dropped in strict</td></tr>
 295 <tr class="impl-yes"><td rowspan="3">type</td><td>LI</td><td rowspan="3">Equivalent style 'list-style-type', different allowed values though. (needs testing)</td></tr>
 296     <tr class="impl-yes"><td>OL</td></tr>
 297     <tr class="impl-yes"><td>UL</td></tr>
 298 <tr class="impl-yes"><td>value</td><td>LI</td><td>Poorly supported 'counter-reset', allowed in loose, dropped in strict</td></tr>
 299 <tr class="impl-yes"><td>vspace</td><td>IMG</td><td>Near-equiv styles 'margin-left' and 'margin-right', needs px suffix, see hspace</td></tr>
 300 <tr class="impl-yes"><td rowspan="2">width</td><td>HR</td><td rowspan="2">Near-equiv style 'width', needs px suffix if original was pixels</td></tr>
 301     <tr class="impl-yes"><td>TD, TH</td></tr>
 302 </tbody>
 303
 304 </table>
 305
 306 </body></html>
 307
 308 <!-- vim: et sw=4 sts=4 -->