89 lines
2.0 KiB
JavaScript
89 lines
2.0 KiB
JavaScript
import UIUtil from '../../util/UIUtil';
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import UIEvents from '../../../../service/UI/UIEvents';
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/**
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* List with supported commands. The keys are the names of the commands and
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* the value is the function that processes the message.
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* @type {{String: function}}
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*/
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const commands = {
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"topic" : processTopic
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};
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/**
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* Extracts the command from the message.
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* @param message the received message
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* @returns {string} the command
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*/
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function getCommand(message) {
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if(message) {
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for(var command in commands) {
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if(message.indexOf("/" + command) === 0)
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return command;
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}
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}
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return "";
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}
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/**
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* Processes the data for topic command.
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* @param commandArguments the arguments of the topic command.
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*/
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function processTopic(commandArguments, emitter) {
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var topic = UIUtil.escapeHtml(commandArguments);
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emitter.emit(UIEvents.SUBJECT_CHANGED, topic);
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}
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/**
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* Constructs a new CommandProccessor instance from a message that
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* handles commands received via chat messages.
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* @param message the message
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* @constructor
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*/
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function CommandsProcessor(message, emitter) {
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var command = getCommand(message);
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this.emitter = emitter;
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/**
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* Returns the name of the command.
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* @returns {String} the command
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*/
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this.getCommand = function() {
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return command;
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};
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var messageArgument = message.substr(command.length + 2);
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/**
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* Returns the arguments of the command.
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* @returns {string}
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*/
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this.getArgument = function() {
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return messageArgument;
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};
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}
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/**
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* Checks whether this instance is valid command or not.
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* @returns {boolean}
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*/
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CommandsProcessor.prototype.isCommand = function() {
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if (this.getCommand())
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return true;
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return false;
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};
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/**
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* Processes the command.
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*/
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CommandsProcessor.prototype.processCommand = function() {
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if(!this.isCommand())
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return;
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commands[this.getCommand()](this.getArgument(), this.emitter);
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};
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export default CommandsProcessor;
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