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mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2025-01-14 19:25:40 +00:00
TiddlyWiki5/core/modules/utils/logger.js
Jermolene 550ad4a1a9 Partial fix for
Stop the logger from creating alert tiddlers on the server. They
propagate to the client but are not deletable from the client because
they are in the `$:/temp` namespace.

cc @loleg
2015-03-12 22:35:03 +00:00

81 lines
2.1 KiB
JavaScript

/*\
title: $:/core/modules/utils/logger.js
type: application/javascript
module-type: utils
A basic logging implementation
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var ALERT_TAG = "$:/tags/Alert";
/*
Make a new logger
*/
function Logger(componentName) {
this.componentName = componentName || "";
}
/*
Log a message
*/
Logger.prototype.log = function(/* args */) {
if(console !== undefined && console.log !== undefined) {
return Function.apply.call(console.log, console, [this.componentName + ":"].concat(Array.prototype.slice.call(arguments,0)));
}
};
/*
Alert a message
*/
Logger.prototype.alert = function(/* args */) {
// Prepare the text of the alert
var text = Array.prototype.join.call(arguments," ");
// Create alert tiddlers in the browser
if($tw.browser) {
// Check if there is an existing alert with the same text and the same component
var existingAlerts = $tw.wiki.getTiddlersWithTag(ALERT_TAG),
alertFields,
existingCount,
self = this;
$tw.utils.each(existingAlerts,function(title) {
var tiddler = $tw.wiki.getTiddler(title);
if(tiddler.fields.text === text && tiddler.fields.component === self.componentName && tiddler.fields.modified && (!alertFields || tiddler.fields.modified < alertFields.modified)) {
alertFields = $tw.utils.extend({},tiddler.fields);
}
});
if(alertFields) {
existingCount = alertFields.count || 1;
} else {
alertFields = {
title: $tw.wiki.generateNewTitle("$:/temp/alerts/alert",{prefix: ""}),
text: text,
tags: [ALERT_TAG],
component: this.componentName
};
existingCount = 0;
}
alertFields.modified = new Date();
if(++existingCount > 1) {
alertFields.count = existingCount;
} else {
alertFields.count = undefined;
}
$tw.wiki.addTiddler(new $tw.Tiddler(alertFields));
// Log the alert as well
this.log.apply(this,Array.prototype.slice.call(arguments,0));
} else {
// Print an orange message to the console if not in the browser
console.error("\x1b[1;33m" + text + "\x1b[0m");
}
};
exports.Logger = Logger;
})();