forked from dwayne45/html
-
Notifications
You must be signed in to change notification settings - Fork 1
/
html-dfn.js
200 lines (188 loc) · 5.96 KB
/
html-dfn.js
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
// A fork of https://resources.whatwg.org/dfn.js which works for HTML's multipage version by using xrefs.json.
'use strict';
(function() {
var isMultipage = document.documentElement.classList.contains('split');
var dfnMapDone = false;
var dfnMap = {};
var dfnPanel;
function isCrossSpecDfn(dfn) {
return dfn.firstChild && dfn.firstChild instanceof HTMLAnchorElement;
}
function handleClick(event) {
if (event.button !== 0) {
return;
}
var current = event.target;
var node;
var eventInDfnPanel = false;
while (current) {
if (current.matches(
"dfn, h2[data-dfn-type], h3[data-dfn-type], h4[data-dfn-type], h5[data-dfn-type], h6[data-dfn-type]"
)) {
node = current;
}
if (dfnPanel && current === dfnPanel) {
eventInDfnPanel = true;
}
current = current.parentElement;
}
if (!eventInDfnPanel) {
closePanel();
}
if (!node) {
return;
}
var id = node.id || node.parentNode.id;
var path = '';
if (isMultipage) {
path = location.pathname;
}
var specURL = '';
if (isCrossSpecDfn(node)) {
specURL = node.firstChild.href;
event.preventDefault();
}
loadReferences(id, path, specURL);
node.appendChild(dfnPanel);
if (isMultipage) {
sessionStorage.dfnId = id;
sessionStorage.dfnPath = path;
sessionStorage.dfnSpecURL = specURL;
}
}
function loadReferences(id, path, specURL) {
if (dfnPanel) {
dfnPanel.remove();
dfnPanel = null;
}
dfnPanel = createPanel(id, path, specURL);
var p = document.createElement('p');
dfnPanel.appendChild(p);
if (!dfnMapDone) {
p.textContent = 'Loading cross-references…';
fetch('/xrefs.json')
.then(response => response.json())
.then(data => {
dfnMap = data;
dfnMapDone = true;
if (dfnPanel) {
fillInReferences(id);
}
}).catch(err => {
p.textContent = 'Error loading cross-references.';
});
} else {
fillInReferences(id);
}
}
function createPanel(id, path, specURL) {
var panel = document.createElement('div');
panel.className = 'dfn-panel on';
if (id) {
var permalinkP = document.createElement('p');
var permalinkA = document.createElement('a');
permalinkA.href = path + '#' + id;
permalinkA.onclick = closePanel;
permalinkA.textContent = '#' + id;
permalinkP.appendChild(permalinkA);
panel.appendChild(permalinkP);
}
if (specURL) {
var realLinkP = document.createElement('p');
realLinkP.className = 'spec-link';
realLinkP.textContent = 'Spec: ';
var realLinkA = document.createElement('a');
realLinkA.href = specURL;
realLinkA.onclick = closePanel;
realLinkA.textContent = specURL;
realLinkP.appendChild(realLinkA);
panel.appendChild(realLinkP);
}
panel.dataset.id = id;
return panel;
}
function fillInReferences(id) {
var p = dfnPanel.lastChild;
if (id in dfnMap) {
p.textContent = 'Referenced in:';
var ul = document.createElement('ul');
var anchorMap = dfnMap[id];
for (var header in anchorMap) {
var li = document.createElement('li');
for (var i = 0; i < anchorMap[header].length; i += 1) {
var a = document.createElement('a');
a.onclick = movePanel;
a.href = anchorMap[header][i];
if (!isMultipage) {
a.href = a.href.substring(a.href.indexOf('#'));
}
if (i === 0) {
var headerFormatted = header.replace(/</g, '<');
headerFormatted = headerFormatted.replace(/ ([^ ]+) (element(?!s)|attribute(?!s)|interface(?!s)|common interface|object)/g, ' <code>$1</code> $2');
headerFormatted = headerFormatted.replace(/<code>(Before|After|Other|The|on|an|for|user|User|custom|Custom|built-in|abstract|exotic|global|settings|Browser|Serializable|Transferable|HTML|IDL|document)<\/code>/, '$1');
headerFormatted = headerFormatted.replace(/(type=[^\)]+)/g, '<code>$1</code>');
headerFormatted = headerFormatted.replace(/(Link type) "([^"]+)"/g, '$1 "<code>$2</code>"');
headerFormatted = headerFormatted.replace(/(ImageBitmap|WindowOrWorkerGlobalScope|multipart\/x-mixed-replace|registerProtocolHandler\(\)|registerContentHandler\(\))|storage|/, '<code>$1</code>');
a.innerHTML = headerFormatted;
} else {
li.appendChild(document.createTextNode(' '));
a.appendChild(document.createTextNode('(' + (i + 1) + ')'));
}
li.appendChild(a);
}
ul.appendChild(li);
}
dfnPanel.appendChild(ul);
} else {
p.textContent = 'No references in this specification.';
}
}
function closePanel(event) {
if (dfnPanel) {
dfnPanel.remove();
dfnPanel = null;
}
if (event) {
event.stopPropagation();
}
if (isMultipage) {
delete sessionStorage.dfnId;
delete sessionStorage.dfnPath;
delete sessionStorage.dfnSpecURL;
}
}
function movePanel(event) {
if (!dfnPanel) {
return;
}
dfnPanel.classList.add("activated");
if (event) {
event.stopPropagation();
}
}
function restoreOrClosePanelOnNav(event) {
// Invoking this function twice is fine since on the second invocation,
// if the panel is open, `dfnPanel.dataset.id === id` so nothing happens;
// if the panel is closed, it will call `closePanel` which only clean up
// sessionStorage (which should already be cleared in that case).
if (sessionStorage.dfnId) {
var id = sessionStorage.dfnId;
var path = sessionStorage.dfnPath;
var specURL = sessionStorage.dfnSpecURL;
if (!dfnPanel || (dfnPanel && dfnPanel.dataset.id !== id)) {
loadReferences(id, path, specURL);
movePanel();
document.body.insertBefore(dfnPanel, document.body.firstChild);
}
} else {
closePanel();
}
}
document.body.classList.add('dfnEnabled');
document.addEventListener('click', handleClick);
if (isMultipage) {
document.addEventListener('DOMContentLoaded', restoreOrClosePanelOnNav);
// Also listen for pageshow to handle history navigation without page-reload.
window.addEventListener('pageshow', restoreOrClosePanelOnNav);
}
})();