( function ( mw, $ ) {
- /**
- * @class mw.log
- * @singleton
- */
+ // Reference to dummy
+ // We don't need the dummy, but it has other methods on it
+ // that we need to restore afterwards.
+ var original = mw.log,
+ slice = Array.prototype.slice;
/**
- * Logs a message to the console.
+ * Logs a message to the console in debug mode.
*
* In the case the browser does not have a console API, a console is created on-the-fly by appending
* a `<div id="mw-log-console">` element to the bottom of the body and then appending this and future
* messages to that, instead of the console.
*
+ * @member mw.log
* @param {string...} msg Messages to output to console.
*/
mw.log = function () {
// Turn arguments into an array
- var args = Array.prototype.slice.call( arguments ),
+ var args = slice.call( arguments ),
// Allow log messages to use a configured prefix to identify the source window (ie. frame)
prefix = mw.config.exists( 'mw.log.prefix' ) ? mw.config.get( 'mw.log.prefix' ) + '> ' : '';
// Try to use an existing console
- if ( window.console !== undefined && $.isFunction( window.console.log ) ) {
+ // Generally we can cache this, but in this case we want to re-evaluate this as a
+ // global property live so that things like Firebug Lite can take precedence.
+ if ( window.console && window.console.log ) {
args.unshift( prefix );
window.console.log.apply( window.console, args );
return;
} );
};
- /**
- * Write a message the console's warning channel.
- * Also logs a stacktrace for easier debugging.
- * Each action is silently ignored if the browser doesn't support it.
- *
- * @param {string...} msg Messages to output to console
- */
- mw.log.warn = function () {
- var console = window.console;
- if ( console && console.warn ) {
- console.warn.apply( console, arguments );
- if ( console.trace ) {
- console.trace();
- }
- }
- };
-
- /**
- * Create a property in a host object that, when accessed, will produce
- * a deprecation warning in the console with backtrace.
- *
- * @param {Object} obj Host object of deprecated property
- * @param {string} key Name of property to create in `obj`
- * @param {Mixed} val The value this property should return when accessed
- * @param {string} [msg] Optional text to include in the deprecation message.
- */
- mw.log.deprecate = !Object.defineProperty ? function ( obj, key, val ) {
- obj[key] = val;
- } : function ( obj, key, val, msg ) {
- msg = 'MWDeprecationWarning: Use of "' + key + '" property is deprecated.' +
- ( msg ? ( ' ' + msg ) : '' );
- try {
- Object.defineProperty( obj, key, {
- configurable: true,
- enumerable: true,
- get: function () {
- mw.log.warn( msg );
- return val;
- },
- set: function ( newVal ) {
- mw.log.warn( msg );
- val = newVal;
- }
- } );
- } catch ( err ) {
- // IE8 can throw on Object.defineProperty
- obj[key] = val;
- }
- };
+ // Restore original methods
+ mw.log.warn = original.warn;
+ mw.log.deprecate = original.deprecate;
}( mediaWiki, jQuery ) );