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
|
# Server-side hooks
These hooks are called on server-side.
## loadSettings
Called from: src/node/server.js
Things in context:
1. settings - the settings object
Use this hook to receive the global settings in your plugin.
## pluginUninstall
Called from: src/static/js/pluginfw/installer.js
Things in context:
1. plugin_name - self-explanatory
If this hook returns an error, the callback to the uninstall function gets an error as well. This mostly seems useful for handling additional features added in based on the installation of other plugins, which is pretty cool!
## pluginInstall
Called from: src/static/js/pluginfw/installer.js
Things in context:
1. plugin_name - self-explanatory
If this hook returns an error, the callback to the install function gets an error, too. This seems useful for adding in features when a particular plugin is installed.
## init_`<plugin name>`
Called from: src/static/js/pluginfw/plugins.js
Things in context: None
This function is called after a specific plugin is initialized. This would probably be more useful than the previous two functions if you only wanted to add in features to one specific plugin.
## expressConfigure
Called from: src/node/hooks/express.js
Things in context:
1. app - the main application object
This is a helpful hook for changing the behavior and configuration of the application. It's called right after the application gets configured.
## expressCreateServer
Called from: src/node/hooks/express.js
Things in context:
1. app - the main express application object (helpful for adding new paths and such)
2. server - the http server object
This hook gets called after the application object has been created, but before it starts listening. This is similar to the expressConfigure hook, but it's not guaranteed that the application object will have all relevant configuration variables.
## eejsBlock_`<name>`
Called from: src/node/eejs/index.js
Things in context:
1. content - the content of the block
This hook gets called upon the rendering of an ejs template block. For any specific kind of block, you can change how that block gets rendered by modifying the content object passed in.
Available blocks in `pad.html` are:
* `htmlHead` - after `<html>` and immediately before the title tag
* `styles` - the style `<link>`s
* `body` - the contents of the body tag
* `editbarMenuLeft` - the left tool bar (consider using the toolbar controller instead of manually adding html here)
* `editbarMenuRight` - right tool bar
* `afterEditbar` - allows you to add stuff immediately after the toolbar
* `userlist` - the contents of the userlist dropdown
* `loading` - the initial loading message
* `mySettings` - the left column of the settings dropdown ("My view"); intended for adding checkboxes only
* `mySettings.dropdowns` - add your dropdown settings here
* `globalSettings` - the right column of the settings dropdown ("Global view")
* `importColumn` - import form
* `exportColumn` - export form
* `modals` - Contains all connectivity messages
* `embedPopup` - the embed dropdown
* `scripts` - Add your script tags here, if you really have to (consider use client-side hooks instead)
`timeslider.html` blocks:
* `timesliderStyles`
* `timesliderScripts`
* `timesliderBody`
* `timesliderTop`
* `timesliderEditbarRight`
* `modals`
`index.html` blocks:
* `indexWrapper` - contains the form for creating new pads
## padInitToolbar
Called from: src/node/hooks/express/specialpages.js
Things in context:
1. toolbar - the toolbar controller that will render the toolbar eventually
Here you can add custom toolbar items that will be available in the toolbar config in `settings.json`. For more about the toolbar controller see the API section.
Usage examples:
* https://github.com/tiblu/ep_authorship_toggle
## padCreate
Called from: src/node/db/Pad.js
Things in context:
1. pad - the pad instance
2. author - the id of the author who created the pad
This hook gets called when a new pad was created.
## padLoad
Called from: src/node/db/Pad.js
Things in context:
1. pad - the pad instance
This hook gets called when a pad was loaded. If a new pad was created and loaded this event will be emitted too.
## padUpdate
Called from: src/node/db/Pad.js
Things in context:
1. pad - the pad instance
2. author - the id of the author who updated the pad
This hook gets called when an existing pad was updated.
## padCopy
Called from: src/node/db/Pad.js
Things in context:
1. originalPad - the source pad instance
2. destinationID - the id of the pad copied from originalPad
This hook gets called when an existing pad was copied.
Usage examples:
* https://github.com/ether/ep_comments
## padRemove
Called from: src/node/db/Pad.js
Things in context:
1. padID
This hook gets called when an existing pad was removed/deleted.
Usage examples:
* https://github.com/ether/ep_comments
## socketio
Called from: src/node/hooks/express/socketio.js
Things in context:
1. app - the application object
2. io - the socketio object
3. server - the http server object
I have no idea what this is useful for, someone else will have to add this description.
## authorize
Called from: src/node/hooks/express/webaccess.js
Things in context:
1. req - the request object
2. res - the response object
3. next - ?
4. resource - the path being accessed
This is useful for modifying the way authentication is done, especially for specific paths.
## authenticate
Called from: src/node/hooks/express/webaccess.js
Things in context:
1. req - the request object
2. res - the response object
3. next - ?
4. username - the username used (optional)
5. password - the password used (optional)
This is useful for modifying the way authentication is done.
## authFailure
Called from: src/node/hooks/express/webaccess.js
Things in context:
1. req - the request object
2. res - the response object
3. next - ?
This is useful for modifying the way authentication is done.
## handleMessage
Called from: src/node/handler/PadMessageHandler.js
Things in context:
1. message - the message being handled
2. client - the client object from socket.io
This hook will be called once a message arrive. If a plugin calls `callback(null)` the message will be dropped. However, it is not possible to modify the message.
Plugins may also decide to implement custom behavior once a message arrives.
**WARNING**: handleMessage will be called, even if the client is not authorized to send this message. It's up to the plugin to check permissions.
Example:
```
function handleMessage ( hook, context, callback ) {
if ( context.message.type == 'USERINFO_UPDATE' ) {
// If the message type is USERINFO_UPDATE, drop the message
callback(null);
}else{
callback();
}
};
```
## handleMessageSecurity
Called from: src/node/handler/PadMessageHandler.js
Things in context:
1. message - the message being handled
2. client - the client object from socket.io
This hook will be called once a message arrives. If a plugin calls `callback(true)` the message will be allowed to be processed. This is especially useful if you want read only pad visitors to update pad contents for whatever reason.
**WARNING**: handleMessageSecurity will be called, even if the client is not authorized to send this message. It's up to the plugin to check permissions.
Example:
```
function handleMessageSecurity ( hook, context, callback ) {
if ( context.message.boomerang == 'hipster' ) {
// If the message boomer is hipster, allow the request
callback(true);
}else{
callback();
}
};
```
## clientVars
Called from: src/node/handler/PadMessageHandler.js
Things in context:
1. clientVars - the basic `clientVars` built by the core
2. pad - the pad this session is about
This hook will be called once a client connects and the `clientVars` are being sent. Plugins can use this hook to give the client an initial configuration, like the tracking-id of an external analytics-tool that is used on the client-side. You can also overwrite values from the original `clientVars`.
Example:
```
exports.clientVars = function(hook, context, callback)
{
// tell the client which year we are in
return callback({ "currentYear": new Date().getFullYear() });
};
```
This can be accessed on the client-side using `clientVars.currentYear`.
## getLineHTMLForExport
Called from: src/node/utils/ExportHtml.js
Things in context:
1. apool - pool object
2. attribLine - line attributes
3. text - line text
This hook will allow a plug-in developer to re-write each line when exporting to HTML.
Example:
```
var Changeset = require("ep_etherpad-lite/static/js/Changeset");
exports.getLineHTMLForExport = function (hook, context) {
var header = _analyzeLine(context.attribLine, context.apool);
if (header) {
return "<" + header + ">" + context.lineContent + "</" + header + ">";
}
}
function _analyzeLine(alineAttrs, apool) {
var header = null;
if (alineAttrs) {
var opIter = Changeset.opIterator(alineAttrs);
if (opIter.hasNext()) {
var op = opIter.next();
header = Changeset.opAttributeValue(op, 'heading', apool);
}
}
return header;
}
```
## stylesForExport
Called from: src/node/utils/ExportHtml.js
Things in context:
1. padId - The Pad Id
This hook will allow a plug-in developer to append Styles to the Exported HTML.
Example:
```
exports.stylesForExport = function(hook, padId, cb){
cb("body{font-size:13.37em !important}");
}
```
## aceAttribClasses
Called from: src/static/js/linestylefilter.js
Things in context:
1. Attributes - Object of Attributes
This hook is called when attributes are investigated on a line. It is useful if you want to add another attribute type or property type to a pad.
Example:
```
exports.aceAttribClasses = function(hook_name, attr, cb){
attr.sub = 'tag:sub';
cb(attr);
}
```
## exportFileName
Called from src/node/handler/ExportHandler.js
Things in context:
1. padId
This hook will allow a plug-in developer to modify the file name of an exported pad. This is useful if you want to export a pad under another name and/or hide the padId under export. Note that the doctype or file extension cannot be modified for security reasons.
Example:
```
exports.exportFileName = function(hook, padId, callback){
callback("newFileName"+padId);
}
```
## exportHtmlAdditionalTags
Called from src/node/utils/ExportHtml.js
Things in context:
1. Pad object
This hook will allow a plug-in developer to include more properties and attributes to support during HTML Export. If tags are stored as `['color', 'red']` on the attribute pool, use `exportHtmlAdditionalTagsWithData` instead. An Array should be returned.
Example:
```
// Add the props to be supported in export
exports.exportHtmlAdditionalTags = function(hook, pad, cb){
var padId = pad.id;
cb(["massive","jugs"]);
};
```
## exportHtmlAdditionalTagsWithData
Called from src/node/utils/ExportHtml.js
Things in context:
1. Pad object
Identical to `exportHtmlAdditionalTags`, but for tags that are stored with a specific value (not simply `true`) on the attribute pool. For example `['color', 'red']`, instead of `['bold', true]`. This hook will allow a plug-in developer to include more properties and attributes to support during HTML Export. An Array of arrays should be returned. The exported HTML will contain tags like `<span data-color="red">` for the content where attributes are `['color', 'red']`.
Example:
```
// Add the props to be supported in export
exports.exportHtmlAdditionalTagsWithData = function(hook, pad, cb){
var padId = pad.id;
cb([["color", "red"], ["color", "blue"]]);
};
```
## userLeave
Called from src/node/handler/PadMessageHandler.js
This in context:
1. session (including the pad id and author id)
This hook gets called when an author leaves a pad. This is useful if you want to perform certain actions after a pad has been edited
Example:
```
exports.userLeave = function(hook, session, callback) {
console.log('%s left pad %s', session.author, session.padId);
};
```
### clientReady
Called from src/node/handler/PadMessageHandler.js
This in context:
1. message
This hook gets called when handling a CLIENT_READY which is the first message from the client to the server.
Example:
```
exports.clientReady = function(hook, message) {
console.log('Client has entered the pad' + message.padId);
};
```
|
