source: branches/FACT++_scripts_refactoring/doc/dim.js@ 20046

Last change on this file since 20046 was 17498, checked in by tbretz, 11 years ago
Implemented that one can wait for 'not a state' to check if a state has been changed away from something.
File size: 8.1 KB
Line 
1throw new Error("Description for built in functions. Must not be included!");
2/**
3 * @fileOverview
4 * Documentation of dim namespace.
5 */
6
7/**
8 * @namespace
9 *
10 * Namespace for extension functions dealing with the DIM network.
11 *
12 * @author <a href="mailto:thomas.bretz@epfl.ch">Thomas Bretz</a>
13 */
14var dim = { };
15
16/**
17 *
18 * Post a message into the dim log stream.
19 *
20 * It will be logged by the datalogger, displayed on the console
21 * and in the smartfact web-gui.
22 *
23 * @param argument
24 * Any kind of argument can be given. If it is not a String, it
25 * is converted using the toString() member function.
26 *
27 * @param [. . .]
28 * Any number of additional arguments. Each argument will appear in
29 * a new line.
30 *
31 * @example
32 * dim.log("Five="+5, "--- new line ---");
33 *
34 */
35dim.log = function() { /* [native code] */ }
36
37/**
38 *
39 * Posts a message to the dim network with alarm severity.
40 *
41 * Similar to dim.log, but the message is posted to the network
42 * with alarm severity. This means that it is displayed in red
43 * and the smartfact web-gui will play an alarm sound.
44 * The alarm state will stay valid (displayed in the web-gui) until it
45 * is reset.
46 *
47 * @param argument
48 * Any kind of argument can be given. If it is not a String, it
49 * is converted using the toString() member function.
50 *
51 * @param [. . .]
52 * Any number of additional arguments. Each argument will appear as
53 * individual alarm.
54 *
55 * @example
56 * dim.alarm("Alarm for 30 seconds!");
57 * v8.sleep(30000);
58 * dim.alarm();
59 */
60dim.alarm = function() { /* [native code] */ }
61
62/**
63 *
64 * Send a dim command to a dim client.
65 *
66 * @param {String} commandId
67 * The command id is a string and usually compiles like
68 * 'SERVER/COMMAND'
69 *
70 * @param argument
71 * Any kind of argument can be given. Arguments are internally
72 * converted into strings using toString() and processed as
73 * if they were typed on th console.
74 *
75 * @param [. . .]
76 * Any number of additional arguments.
77 *
78 * @example
79 * dim.send('DRIVE_CONTROL/TRACK_SOURCE 0.5 180 "Mrk 421"');
80 * dim.send('DRIVE_CONTROL/TRACK_SOURCE', 0.5, 180, 'Mrk 421');
81 *
82 * @returns
83 * A boolean value is returned whether the command was succesfully
84 * posted into the network or not. Note that true does by no means
85 * mean that the command was sucessfully received or even processed.
86 */
87dim.send = function() { /* [native code] */ }
88
89/**
90 * Returns the state of the given server.
91 *
92 * @param {String} name
93 * The name of the server of which you want to get the state.
94 *
95 * @throws
96 * If number or type of arguments is wrong
97 *
98 * @returns {Object}
99 * An object with the properties 'index' {Integer} and 'name' {String}
100 * is returned if a connection to the server is established and
101 * state information have been received, 'undefined' otherwise. If
102 * the time of the last state change is available, it is stored
103 * in the 'property'. If a server disconnected, a valid object will
104 * be returned, but without any properties.
105 */
106dim.state = function() { /* [native code] */ }
107
108/**
109 * Wait for the given state of a server.
110 *
111 * Note that the function is internally asynchornously checking the
112 * state, that means that theoretically, a state could be missed if
113 * it changes too fast. If this can happen callbacks have to be used.
114 *
115 * @param {String} name
116 * The name of the server of which you want to wait for a state.
117 * The name must not contain quotation marks. To wait for
118 * "not the given state", prefix the server name with an
119 * exclamation mark, e.g. "!DIM_CONTROL"
120 *
121 * @param {String,Integer} state
122 * The state you want to wait for. It can either be given as an Integer
123 * or as the corresponding short name. If given as String it must
124 * not contain quotation marks.
125 *
126 * @param {Integer} [timeout]
127 * An optional timeout. If no timeout is given or a timeout of undefined,
128 * waiting will not stop until the condition is fulfilled. A timeout
129 * of 0 is allowed and will essentially just check if the server is
130 * in this state or not. If a negative value is given, exceptions are
131 * suppressed and false is returned in case of timeout. As timeout
132 * the absolute value is used.
133 *
134 * @throws
135 * <li> If number or type of arguments is wrong
136 * <li> If no connection to the server is established or no state
137 * has been received yet. This is identical to dim.state()
138 * returning 'undefined' (only in case a positive timeout
139 * is given)
140 *
141 * @returns {Boolean}
142 * true if the state was achived within the timeout, false otherwise.
143 */
144dim.wait = function() { /* [native code] */ }
145
146/**
147 *
148 * Returns a list of all known state of a given server.
149 *
150 * The returned object has all states with their index as property.
151 * Each state is returned as a String object with the property description.
152 *
153 * @param {String} [server='DIM_CONTROL']
154 * Name of the server for which states should be listed.
155 * The states of the DIM_CONTROl server are the default.
156 *
157 * @throws
158 * If number or type of arguments is wrong
159 *
160 * @type Object[StringObject]
161 *
162 * @example
163 * var states = dim.getStates("SERVER");
164 * console.out(JSON.stringify(states));
165 * for (var index in states)
166 * console.out(index+"="+states[index]+": "+states[index].description);
167 */
168dim.getStates = function() { /* [native code] */ }
169
170/**
171 *
172 * Returns a description for one service
173 *
174 * The returned array has objects with the properties: name, description and unit. The last
175 * two are optional. The array itself has the properties name, server, service, isCommand
176 * and optionally format.
177 *
178 * @param {String} service
179 * String specifying the name of the service to be returned.
180 *
181 * @throws
182 * If number or type of arguments is wrong
183 *
184 * @type {Description}
185 *
186 * @example
187 * var s = dim.getDescription("TNG_WEATHER/DATA");
188 * console.out("Name="+s.name);
189 * console.out("Server="+s.server);
190 * console.out("Service="+s.service);
191 * console.out("Format="+s.format);
192 * console.out("Description="+s.name);
193 * console.out("IsCommand="+s.isCommand);
194 * console.out(JSON.stringify(s));
195 */
196dim.getDescription = function() { /* [native code] */ }
197
198/**
199 *
200 * Returns a list of all known services
201 *
202 * The returned array has objects with the properties: name, server, service, command
203 * and (optional) format.
204 *
205 * @param {String} [service='*']
206 * String a service has to start with to be returned. The default is to return
207 * all available services. An empty string or '*' are wildcards for all
208 * services.
209 *
210 * @param {Boolean} [isCommand=undefined]
211 * If no second argument is specified, data services and commands are returned.
212 * With true, only commands, with false, only data-services are returned.
213 *
214 * @throws
215 * If number or type of arguments is wrong
216 *
217 * @type Array[Object]
218 *
219 * @example
220 * // Return all services of the FAD_CONTROL starting with E
221 * var services = dim.getServices("FAD_CONTROL/E");
222 * console.out(JSON.stringify(services));
223 */
224dim.getServices = function() { /* [native code] */ }
225
226/**
227 *
228 * Callback in case of state changes.
229 *
230 * To install a callback in case the state of a server changes. set
231 * the corresponding property of this array to a function. The argument
232 * provided to the function is identical with the object returned
233 * by dim.state(). In addition the name of the server is added
234 * as the 'name' property and the comment sent with the state change
235 * as 'comment' property. For the code executed, the same rules apply
236 * than for a thread created with Thread.<P>
237 *
238 * If a state change is defined for a server for which no callback
239 * has been set, the special entry '*' is checked.
240 *
241 *
242 * @type Array[Function]
243 *
244 * @example
245 * dim.onchange['*'] = function(state) { console.out("State change from "+state.name+" received"); }
246 * dim.onchange['DIM_CONTROL'] = function(state) { console.out(JSON.stringify(state); }
247 * ...
248 * delete dim.onchange['DIM_CONTROL']; // to remove the callback
249 *
250 */
251dim.onchange = [];
252
253
254/**
255 * DIM version number
256 *
257 * @constant
258 * @type Integer
259 */
260dim.version = 0;
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