mediawiki-extensions-Visual.../modules/parser/ext.core.LinkHandler.js

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/**
* Simple link handler. Registers after template expansions, as an
* asynchronous transform.
*
* @author Gabriel Wicke <gwicke@wikimedia.org>
*
* TODO: keep round-trip information in meta tag or the like
*/
var jshashes = require('jshashes'),
PegTokenizer = require('./mediawiki.tokenizer.peg.js').PegTokenizer;
function WikiLinkHandler( manager, isInclude ) {
this.manager = manager;
this.manager.addTransform( this.onWikiLink.bind( this ), this.rank, 'tag', 'wikilink' );
// create a new peg parser for image options..
if ( !this.imageParser ) {
// Actually the regular tokenizer, but we'll call it with the
// img_options production only.
WikiLinkHandler.prototype.imageParser = new PegTokenizer();
}
}
WikiLinkHandler.prototype.rank = 1.15; // after AttributeExpander
WikiLinkHandler.prototype.onWikiLink = function ( token, manager, cb ) {
var env = this.manager.env;
var title = this.manager.env.makeTitleFromPrefixedText(
env.tokensToString(
env.lookupKV( token.attribs, 'href' ).v
)
);
if ( title.ns.isFile() ) {
return this.renderFile( token, manager, cb, title );
} else if ( title.ns.isCategory() ) {
// TODO: implement
return [];
} else {
// Check if page exists
//
var obj = new TagTk( 'a', [ this.manager.env.lookupKV( token.attribs, 'href' ) ] );
obj.attribs.push( new KV('data-mw-type', 'internal') );
var out = [obj].concat( this.manager.env.lookupKV( token.attribs, 'content' ).v,
new EndTagTk( 'a' ) );
//console.warn( JSON.stringify( out, null, 2 ) );
return { tokens: out };
}
};
WikiLinkHandler.prototype.renderFile = function ( token, manager, cb, title ) {
var env = manager.env;
// distinguish media types
// if image: parse options
// XXX: get /wiki from config!
var a = new TagTk( 'a', [ new KV( 'href', '/wiki' + title.makeLink() ) ] );
var MD5 = new jshashes.MD5(),
hash = MD5.hex( title.key ),
// XXX: Hackhack..
path = 'http://example.com/images/' +
[ hash[0], hash.substr(0, 2) ].join('/') + '/' + title.key;
// XXX: parse options
var options = this.parseImageOptions( env.lookupKV( token.attribs, 'content' ) );
// XXX: check if the file exists, generate thumbnail
// XXX: render according to mode (inline, thumb, framed etc)
var img = new SelfclosingTagTk( 'img',
[
// FIXME!
new KV( 'height', '220' ),
new KV( 'width', '1941' ),
new KV( 'src', path ),
new KV( 'alt', title.key )
] );
return { tokens: [ a, img, new EndTagTk( 'a' )] };
};
WikiLinkHandler.prototype.parseImageOptions = function ( tokens ) {
var text = this.manager.env.tokensToString( tokens );
};
if (typeof module == "object") {
module.exports.WikiLinkHandler = WikiLinkHandler;
}