aboutsummaryrefslogtreecommitdiff
path: root/doc/context-intro.html
blob: b53ae367ad649c16e551d0389d5d64d8bf094e0e (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
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
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
    "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="generator" content="AsciiDoc 8.2.7" />
<style type="text/css">
/* Debug borders */
p, li, dt, dd, div, pre, h1, h2, h3, h4, h5, h6 {
/*
  border: 1px solid red;
*/
}

body {
  margin: 1em 5% 1em 5%;
}

a {
  color: blue;
  text-decoration: underline;
}
a:visited {
  color: fuchsia;
}

em {
  font-style: italic;
  color: navy;
}

strong {
  font-weight: bold;
  color: #083194;
}

tt {
  color: navy;
}

h1, h2, h3, h4, h5, h6 {
  color: #527bbd;
  font-family: sans-serif;
  margin-top: 1.2em;
  margin-bottom: 0.5em;
  line-height: 1.3;
}

h1, h2, h3 {
  border-bottom: 2px solid silver;
}
h2 {
  padding-top: 0.5em;
}
h3 {
  float: left;
}
h3 + * {
  clear: left;
}

div.sectionbody {
  font-family: serif;
  margin-left: 0;
}

hr {
  border: 1px solid silver;
}

p {
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}

ul, ol, li > p {
  margin-top: 0;
}

pre {
  padding: 0;
  margin: 0;
}

span#author {
  color: #527bbd;
  font-family: sans-serif;
  font-weight: bold;
  font-size: 1.1em;
}
span#email {
}
span#revision {
  font-family: sans-serif;
}

div#footer {
  font-family: sans-serif;
  font-size: small;
  border-top: 2px solid silver;
  padding-top: 0.5em;
  margin-top: 4.0em;
}
div#footer-text {
  float: left;
  padding-bottom: 0.5em;
}
div#footer-badges {
  float: right;
  padding-bottom: 0.5em;
}

div#preamble,
div.tableblock, div.imageblock, div.exampleblock, div.verseblock,
div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
div.admonitionblock {
  margin-right: 10%;
  margin-top: 1.5em;
  margin-bottom: 1.5em;
}
div.admonitionblock {
  margin-top: 2.5em;
  margin-bottom: 2.5em;
}

div.content { /* Block element content. */
  padding: 0;
}

/* Block element titles. */
div.title, caption.title {
  color: #527bbd;
  font-family: sans-serif;
  font-weight: bold;
  text-align: left;
  margin-top: 1.0em;
  margin-bottom: 0.5em;
}
div.title + * {
  margin-top: 0;
}

td div.title:first-child {
  margin-top: 0.0em;
}
div.content div.title:first-child {
  margin-top: 0.0em;
}
div.content + div.title {
  margin-top: 0.0em;
}

div.sidebarblock > div.content {
  background: #ffffee;
  border: 1px solid silver;
  padding: 0.5em;
}

div.listingblock {
  margin-right: 0%;
}
div.listingblock > div.content {
  border: 1px solid silver;
  background: #f4f4f4;
  padding: 0.5em;
}

div.quoteblock {
  padding-left: 2.0em;
}
div.quoteblock > div.attribution {
  padding-top: 0.5em;
  text-align: right;
}

div.verseblock {
  padding-left: 2.0em;
}
div.verseblock > div.content {
  white-space: pre;
}
div.verseblock > div.attribution {
  padding-top: 0.75em;
  text-align: left;
}
/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
div.verseblock + div.attribution {
  text-align: left;
}

div.admonitionblock .icon {
  vertical-align: top;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: underline;
  color: #527bbd;
  padding-right: 0.5em;
}
div.admonitionblock td.content {
  padding-left: 0.5em;
  border-left: 2px solid silver;
}

div.exampleblock > div.content {
  border-left: 2px solid silver;
  padding: 0.5em;
}

div.imageblock div.content { padding-left: 0; }
div.imageblock img { border: 1px solid silver; }
span.image img { border-style: none; }

dl {
  margin-top: 0.8em;
  margin-bottom: 0.8em;
}
dt {
  margin-top: 0.5em;
  margin-bottom: 0;
  font-style: normal;
}
dd > *:first-child {
  margin-top: 0.1em;
}

ul, ol {
    list-style-position: outside;
}
div.olist > ol {
  list-style-type: decimal;
}
div.olist2 > ol {
  list-style-type: lower-alpha;
}

div.tableblock > table {
  border: 3px solid #527bbd;
}
thead {
  font-family: sans-serif;
  font-weight: bold;
}
tfoot {
  font-weight: bold;
}

div.hlist {
  margin-top: 0.8em;
  margin-bottom: 0.8em;
}
div.hlist td {
  padding-bottom: 15px;
}
td.hlist1 {
  vertical-align: top;
  font-style: normal;
  padding-right: 0.8em;
}
td.hlist2 {
  vertical-align: top;
}

@media print {
  div#footer-badges { display: none; }
}

div#toctitle {
  color: #527bbd;
  font-family: sans-serif;
  font-size: 1.1em;
  font-weight: bold;
  margin-top: 1.0em;
  margin-bottom: 0.1em;
}

div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
  margin-top: 0;
  margin-bottom: 0;
}
div.toclevel2 {
  margin-left: 2em;
  font-size: 0.9em;
}
div.toclevel3 {
  margin-left: 4em;
  font-size: 0.9em;
}
div.toclevel4 {
  margin-left: 6em;
  font-size: 0.9em;
}
/* Workarounds for IE6's broken and incomplete CSS2. */

div.sidebar-content {
  background: #ffffee;
  border: 1px solid silver;
  padding: 0.5em;
}
div.sidebar-title, div.image-title {
  color: #527bbd;
  font-family: sans-serif;
  font-weight: bold;
  margin-top: 0.0em;
  margin-bottom: 0.5em;
}

div.listingblock div.content {
  border: 1px solid silver;
  background: #f4f4f4;
  padding: 0.5em;
}

div.quoteblock-attribution {
  padding-top: 0.5em;
  text-align: right;
}

div.verseblock-content {
  white-space: pre;
}
div.verseblock-attribution {
  padding-top: 0.75em;
  text-align: left;
}

div.exampleblock-content {
  border-left: 2px solid silver;
  padding-left: 0.5em;
}

/* IE6 sets dynamically generated links as visited. */
div#toc a:visited { color: blue; }

/* Because IE6 child selector is broken. */
div.olist2 ol {
  list-style-type: lower-alpha;
}
div.olist2 div.olist ol {
  list-style-type: decimal;
}
</style>
<script type="text/javascript">
/*<![CDATA[*/
window.onload = function(){generateToc(2)}
/* Author: Mihai Bazon, September 2002
 * http://students.infoiasi.ro/~mishoo
 *
 * Table Of Content generator
 * Version: 0.4
 *
 * Feel free to use this script under the terms of the GNU General Public
 * License, as long as you do not remove or alter this notice.
 */

 /* modified by Troy D. Hanson, September 2006. License: GPL */
 /* modified by Stuart Rackham, October 2006. License: GPL */

function getText(el) {
  var text = "";
  for (var i = el.firstChild; i != null; i = i.nextSibling) {
    if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
      text += i.data;
    else if (i.firstChild != null)
      text += getText(i);
  }
  return text;
}

function TocEntry(el, text, toclevel) {
  this.element = el;
  this.text = text;
  this.toclevel = toclevel;
}

function tocEntries(el, toclevels) {
  var result = new Array;
  var re = new RegExp('[hH]([2-'+(toclevels+1)+'])');
  // Function that scans the DOM tree for header elements (the DOM2
  // nodeIterator API would be a better technique but not supported by all
  // browsers).
  var iterate = function (el) {
    for (var i = el.firstChild; i != null; i = i.nextSibling) {
      if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
        var mo = re.exec(i.tagName)
        if (mo)
          result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
        iterate(i);
      }
    }
  }
  iterate(el);
  return result;
}

// This function does the work. toclevels = 1..4.
function generateToc(toclevels) {
  var toc = document.getElementById("toc");
  var entries = tocEntries(document.getElementsByTagName("body")[0], toclevels);
  for (var i = 0; i < entries.length; ++i) {
    var entry = entries[i];
    if (entry.element.id == "")
      entry.element.id = "toc" + i;
    var a = document.createElement("a");
    a.href = "#" + entry.element.id;
    a.appendChild(document.createTextNode(entry.text));
    var div = document.createElement("div");
    div.appendChild(a);
    div.className = "toclevel" + entry.toclevel;
    toc.appendChild(div);
  }
  if (entries.length == 0)
    document.getElementById("header").removeChild(toc);
}
/*]]>*/
</script>
<title>Context Framework</title>
</head>
<body>
<div id="header">
<h1>Context Framework</h1>
<div id="toc">
  <div id="toctitle">Table of Contents</div>
  <noscript><p><b>JavaScript must be enabled in your browser to display the table of contents.</b></p></noscript>
</div>
</div>
<div id="preamble">
<div class="sectionbody">
<div class="para"><p>The Context Framework provides a uniform, high level API to numerous
context properties of the device.</p></div>
<div class="para"><p>Please follow the links for more details:</p></div>
<div class="ilist"><ul>
<li>
<p>
<a href="libcontextsubscriber">Documention of the high level API for clients</a>
</p>
</li>
<li>
<p>
<a href="context-properties.html">Documentation of context properties</a>
</p>
</li>
<li>
<p>
<a href="context-providers.html">Documentation for providers of context properties</a>
</p>
</li>
<li>
<p>
<a href="context-arch.html">Architecture description</a>
</p>
</li>
</ul></div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2009-10-23 08:59:27 EEST
</div>
</div>
</body>
</html>