/**
* Simple Placeholder-based Localization
*
- * Call on a selection of HTML which contains <html:msg key="message-key" /> elements or elements with
- * title-msg="message-key" or alt-msg="message-key" attributes. <html:msg /> elements will be replaced
- * with localized text, elements with title-msg and alt-msg attributes will receive localized title
- * and alt attributes.
- * *
+ * Call on a selection of HTML which contains <html:msg key="message-key" /> elements or elements
+ * with title-msg="message-key", alt-msg="message-key" or placeholder-msg="message-key" attributes.
+ * <html:msg /> elements will be replaced with localized text, *-msg attributes will be replaced
+ * with attributes that do not have the "-msg" suffix and contain a localized message.
+ *
+ * Example:
+ * // Messages: { 'title': 'Awesome', 'desc': 'Cat doing backflip' 'search' contains 'Search' }
+ * var html = '\
+ * <p>\
+ * <html:msg key="title" />\
+ * <img src="something.jpg" title-msg="title" alt-msg="desc" />\
+ * <input type="text" placeholder-msg="search" />\
+ * </p>';
+ * $( 'body' ).append( $( html ).localize() );
+ *
+ * Appends something like this to the body...
+ * <p>
+ * Awesome
+ * <img src="something.jpg" title="Awesome" alt="Cat doing backflip" />
+ * <input type="text" placeholder="Search" />
+ * </p>
+ *
+ * Arguments can be passed into uses of a message using the params property of the options object
+ * given to .localize(). Multiple messages can be given parameters, because the params property is
+ * an object keyed by the message key to apply the parameters to, each containing an array of
+ * parameters to use. The limitation is that you can not use different parameters to individual uses
+ * of a message in the same selection being localized - they will all recieve the same parameters.
+ *
+ * Example:
+ * // Messages: { 'easy-as': 'Easy as $1 $2 $3.' }
+ * var html = '<p><html:msg key="easy-as" /></p>';
+ * $( 'body' ).append( $( html ).localize( { 'params': { 'easy-as': ['a', 'b', 'c'] } } ) );
+ *
+ * Appends something like this to the body...
+ * <p>Easy as a, b, c</p>
+ *
+ * Raw HTML content can be used, instead of it being escaped as text. To do this, just use the raw
+ * attribute on a msg element.
+ *
+ * Example:
+ * // Messages: { 'hello': '<b><i>Hello</i> $1!</b>' }
+ * var html = '\
+ * <p>\
+ * <!-- escaped: --><html:msg key="hello" />\
+ * <!-- raw: --><html:msg key="hello" raw />\
+ * </p>';
+ * $( 'body' ).append( $( html ).localize( { 'params': { 'hello': ['world'] } } ) );
+ *
+ * Appends something like this to the body...
+ * <p>
+ * <!-- escaped: --><b><i>Hello</i> world!</b>
+ * <!-- raw: --><b><i>Hello</i> world!</b>
+ * </p>
+ *
+ * Message keys can also be remapped, allowing the same generic template to be used with a variety
+ * of messages. This is important for improving re-usability of templates.
+ *
* Example:
- * <p class="somethingCool">
- * <html:msg key="my-message" />
- * <img src="something.jpg" title-msg="my-title-message" alt-msg="my-alt-message" />
- * </p>
- *
- * Localizes to...
- * <p class="somethingCool">
- * My Message
- * <img src="something.jpg" title="My Title Message" alt="My Alt Message" />
- * </p>
+ * // Messages: { 'good-afternoon': 'Good afternoon' }
+ * var html = '<p><html:msg key="greeting" /></p>';
+ * $( 'body' ).append( $( html ).localize( { 'keys': { 'greeting': 'good-afternoon' } } ) );
+ *
+ * Appends something like this to the body...
+ * <p>Good afternoon</p>
+ *
+ * Message keys can also be prefixed globally, which is handy when writing extensions, where by
+ * convention all messages are prefixed with the extension's name.
+ *
+ * Example:
+ * // Messages: { 'teleportation-warning': 'You may not get there all in one piece.' }
+ * var html = '<p><html:msg key="warning" /></p>';
+ * $( 'body' ).append( $( html ).localize( { 'prefix': 'teleportation-' } ) );
+ *
+ * Appends something like this to the body...
+ * <p>You may not get there all in one piece.</p>
+ *
*/
( function ( $, mw ) {
+
+/**
+ * Gets a localized message, using parameters from options if present.
+ *
+ * @function
+ * @param {String} key Message key to get localized message for
+ * @returns {String} Localized message
+ */
+function msg( options, key ) {
+ var args = options.params[key] || [];
+ // Format: mw.msg( key [, p1, p2, ...] )
+ args.unshift( options.prefix + ( options.keys[key] || key ) );
+ return mw.msg.apply( mw, args );
+}
+
/**
* Localizes a DOM selection by replacing <html:msg /> elements with localized text and adding
* localized title and alt attributes to elements with title-msg and alt-msg attributes
* respectively.
*
- * @param Object: options Map of options
- * * prefix: Message prefix to use when localizing elements and attributes
+ * @method
+ * @param {Object} options Map of options to be used while localizing
+ * @param {String} options.prefix String to prepend to all message keys
+ * @param {Object} options.keys Message key aliases, used for remapping keys to a template
+ * @param {Object} options.params Lists of parameters to use with certain message keys
+ * @returns {jQuery} This selection
*/
-
$.fn.localize = function ( options ) {
+ var $target = this,
+ attributes = ['title', 'alt', 'placeholder'];
+
+ // Extend options
options = $.extend( {
prefix: '',
keys: {},
params: {}
}, options );
- function msg( key ) {
- var args = key in options.params ? options.params[key] : [];
- // Format: mw.msg( key [, p1, p2, ...] )
- args.unshift( options.prefix + ( key in options.keys ? options.keys[key] : key ) );
- return mw.msg.apply( mw, args );
- }
+ // Elements
+ // Ok, so here's the story on this selector. In IE 6/7, searching for 'msg' turns up the
+ // 'html:msg', but searching for 'html:msg' doesn't. In later IE and other browsers, searching
+ // for 'html:msg' turns up the 'html:msg', but searching for 'msg' doesn't. So searching for
+ // both 'msg' and 'html:msg' seems to get the job done. This feels pretty icky, though.
+ $target.find( 'msg,html\\:msg' ).each( function () {
+ var $el = $(this);
+ // Escape by default
+ if ( $el.attr( 'raw' ) ) {
+ $el.html( msg( options, $el.attr( 'key' ) ) );
+ } else {
+ $el.text( msg( options, $el.attr( 'key' ) ) );
+ }
+ // Remove wrapper
+ $el.replaceWith( $el.html() );
+ } );
- return $(this)
- // Ok, so here's the story on this selector.
- // In IE 6/7, searching for 'msg' turns up the 'html:msg', but searching for 'html:msg' does not.
- // In later IE and other browsers, searching for 'html:msg' turns up the 'html:msg', but searching for 'msg' does not.
- // So searching for both 'msg' and 'html:msg' seems to get the job done.
- // This feels pretty icky, though.
- .find( 'msg,html\\:msg' )
- .each( function () {
- var $el = $(this);
- var msgText = msg( $el.attr( 'key' ) );
+ // Attributes
+ // Note: there's no way to prevent escaping of values being injected into attributes, this is
+ // on purpose, not a design flaw.
+ $.each( attributes, function ( i, attr ) {
+ var msgAttr = attr + '-msg';
+ $target.find( '[' + msgAttr + ']' ).each( function () {
+ var $el = $(this);
+ $el.attr( attr, msg( options, $el.attr( msgAttr ) ) ).removeAttr( msgAttr );
+ } );
+ } );
- if ( $el.attr( 'raw' ) ) {
- $el.html(msgText);
- } else {
- $el.text(msgText);
- }
-
- $el
- .replaceWith( $el.html() );
- } )
- .end()
- .find( '[title-msg]' )
- .each( function () {
- var $el = $(this);
- $el
- .attr( 'title', msg( $el.attr( 'title-msg' ) ) )
- .removeAttr( 'title-msg' );
- } )
- .end()
- .find( '[alt-msg]' )
- .each( function () {
- var $el = $(this);
- $el
- .attr( 'alt', msg( $el.attr( 'alt-msg' ) ) )
- .removeAttr( 'alt-msg' );
- } )
- .end();
+ return $target;
};
// Let IE know about the msg tag before it's used...
assert.strictEqual( $lc.text(), 'Basic stuff', 'Tag: html:msg' );
// Attribute: title-msg
- html = '<div><span title-msg="basic" /></span></div>';
+ html = '<div><span title-msg="basic"></span></div>';
$lc = $( html ).localize().find( 'span' );
assert.strictEqual( $lc.attr( 'title' ), 'Basic stuff', 'Attribute: title-msg' );
// Attribute: alt-msg
- html = '<div><span alt-msg="basic" /></span></div>';
+ html = '<div><span alt-msg="basic"></span></div>';
$lc = $( html ).localize().find( 'span' );
assert.strictEqual( $lc.attr( 'alt' ), 'Basic stuff', 'Attribute: alt-msg' );
+
+ // Attribute: placeholder-msg
+ html = '<div><input placeholder-msg="basic" /></div>';
+ $lc = $( html ).localize().find( 'input' );
+
+ assert.strictEqual( $lc.attr( 'placeholder' ), 'Basic stuff', 'Attribute: placeholder-msg' );
} );
QUnit.test( 'Proper escaping', 2, function ( assert ) {
// making sure it is actually using text() and attr() (or something with the same effect)
// Text escaping
- html = '<div><span><html:msg key="properfoo" /></span></div>';
+ html = '<div><span><html:msg key="properfoo"></span></div>';
$lc = $( html ).localize().find( 'span' );
assert.strictEqual( $lc.text(), mw.msg( 'properfoo' ), 'Content is inserted as text, not as html.' );
// Attribute escaping
- html = '<div><span title-msg="properfoo" /></span></div>';
+ html = '<div><span title-msg="properfoo"></span></div>';
$lc = $( html ).localize().find( 'span' );
assert.strictEqual( $lc.attr( 'title' ), mw.msg( 'properfoo' ), 'Attributes are not inserted raw.' );
var html, $lc, attrs, x, sitename = 'Wikipedia';
// Message key prefix
- html = '<div><span title-msg="lorem"><html:msg key="ipsum" /></span></div>';
+ html = '<div><span title-msg="lorem"><html:msg key="ipsum"></span></div>';
$lc = $( html ).localize( {
prefix: 'foo-'
} ).find( 'span' );
// Variable keys mapping
x = 'bar';
- html = '<div><span title-msg="title"><html:msg key="label" /></span></div>';
+ html = '<div><span title-msg="title"><html:msg key="label"></span></div>';
$lc = $( html ).localize( {
keys: {
'title': 'foo-' + x + '-title',
assert.strictEqual( $lc.text(), 'The Bars', 'Variable keys mapping - text' );
// Passing parameteters to mw.msg
- html = '<div><span><html:msg key="foo-welcome" /></span></div>';
+ html = '<div><span><html:msg key="foo-welcome"></span></div>';
$lc = $( html ).localize( {
params: {
'foo-welcome': [sitename, 'yesterday']
// Combination of options prefix, params and keys
x = 'bazz';
- html = '<div><span title-msg="title"><html:msg key="label" /></span></div>';
+ html = '<div><span title-msg="title"><html:msg key="label"></span></div>';
$lc = $( html ).localize( {
prefix: 'foo-',
keys: {