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/**
* Responsible for executing a deferred request to the MediaWiki back-end to
* retrieve the representation for a #ask query.
*/
/*global jQuery, mediaWiki, smw */
/*jslint white: true */
( function( $, mw, onoi ) {
'use strict';
/**
* @since 3.0
* @constructor
*
* @param container {Object}
* @param api {Object}
*/
var Query = function ( container, api ) {
this.VERSION = "3.0";
this.container = container;
this.mwApi = api;
this.title = mw.config.get( 'wgPageName' );
this.data = container.data( 'query' );
this.query = this.data.query;
this.cmd = this.data.cmd;
this.control = container.find( '#deferred-control' ).data( 'control' );
this.limit = this.data.limit;
this.offset = this.data.offset;
this.rangeLimit = this.limit;
this.rangeOffset = this.offset;
this.init = true;
this.max = this.data.max;
this.step = 5;
this.postfix = '';
// Ensure to have a limit, offset parameter for queries that use
// the default setting
if ( this.query.indexOf( "|limit=" ) == -1 ) {
this.query = this.query + '|limit=' + this.limit;
}
if ( this.query.indexOf( "|offset=" ) == -1 ) {
this.query = this.query + '|offset=' + this.offset;
}
if ( this.query.indexOf( "|default=" ) == -1 ) {
this.query = this.query + '|default=' + mw.msg( 'smw_result_noresults' );
}
};
/**
* Request and parse a #ask/#show query using the MediaWiki API back-end
*
* @since 3.0
*/
Query.prototype.doApiRequest = function() {
var self = this,
noTrace = '';
// Replace limit, offset with altered values
var query = self.query.replace(
'limit=' + self.limit,
'limit=' + self.rangeLimit
).replace(
'offset=' + self.offset,
'offset=' + self.rangeOffset
);
// In case the query was altered from its original request, signal
// to the QueryDependencyLinksStore to disable any tracking
if ( self.query !== query ) {
noTrace = '|@notrace';
};
// API notes "modules: Gives the ResourceLoader modules used on the page.
// Either jsconfigvars or encodedjsconfigvars must be requested jointly
// with modules. 1.24+"
self.mwApi.post( {
action: "parse",
title: self.title,
contentmodel: 'wikitext',
prop: 'text|modules|jsconfigvars',
text: '{{#' + self.cmd + ':' + query + noTrace + '}}'
} ).done( function( data ) {
if ( self.init === true ) {
self.initControls();
self.replaceOutput( '' );
};
// Remove any comments retrieved from the API parse
var text = data.parse.text['*'].replace(/<!--[\S\s]*?-->/gm, '' );
// Remove any remaining placeholder loading classes
if ( self.control !== '' ) {
text = text.replace( 'smw-loading-image-dots', '' );
}
// Remove any <p> element to avoid line breakages
if ( self.cmd === 'show' ) {
text = text.replace( /(?:^<p[^>]*>)|(?:<\/p>$)/img, '' );
}
self.replaceOutput( text, '', data.parse.modules );
} ).fail ( function( code, failure ) {
var error = code + ': ' + failure.textStatus;
if ( failure.hasOwnProperty( 'exception' ) && failure.hasOwnProperty( 'xhr' ) ) {
error = failure.xhr.responseText;
} else if ( failure.hasOwnProperty( 'error' ) && failure.error.hasOwnProperty( 'info' ) ) {
error = failure.error.info;
}
self.container.find( '#deferred-control' ).replaceWith( "<div id='deferred-control'></div>" );
self.container.find( '.irs' ).hide();
self.replaceOutput( error, "smw-callout smw-callout-error" );
} );
};
/**
* Replace output with generated content
*
* @since 3.0
*
* @param text {String}
* @param oClass {String}
* @param modules {Array}
*
* @return {this}
*/
Query.prototype.replaceOutput = function( text, oClass, modules ) {
var self = this,
element = this.cmd === 'ask' ? 'div' : 'span';
oClass = oClass !== undefined ? "class='" + oClass + "'" : '';
self.container.find( '#deferred-output' ).replaceWith(
"<" + element + " id='deferred-output'" + oClass + ">" + text + "</" + element + ">"
);
self.reload( modules );
};
/**
* Reload module objects that rely on JavaScript to be executed after a
* fresh parse.
*
* @since 3.0
*
* @param modules {Array}
*/
Query.prototype.reload = function( modules ) {
var self = this;
// Trigger an event to re-apply JS instances initialization on new
// content
if ( modules !== undefined ) {
mw.loader.using( modules ).done( function () {
mw.hook( 'smw.deferred.query' ).fire( self.container );
} );
} else {
mw.hook( 'smw.deferred.query' ).fire( self.container );
}
var table = self.container.find( '#deferred-output table' );
// MW's table sorter isn't listed as page module therefore make an exception
// and reload it manually
if ( table.length > 0 && table.hasClass( 'sortable' ) ) {
mw.loader.using( 'jquery.tablesorter' ).done( function () {
table.tablesorter();
mw.hook( 'smw.deferred.query.tablesorter' ).fire( table );
} );
}
};
/**
* Executes and manages the initialization of control elements
*
* @since 3.0
*/
Query.prototype.initControls = function() {
var self = this;
var loading = '<div class="smw-flex-center smw-absolute"><span class="smw-overlay-spinner medium flex" alt="Loading..."></span></div>';
if ( self.init === true && self.control === 'slider' ) {
self.container.find( '#deferred-control' ).ionRangeSlider( {
type: "double",
min: 0,
max: self.max,
step: self.step,
from: self.offset,
to: self.limit + self.offset,
force_edges: true,
postfix: self.postfix,
min_interval: 1,
grid: true,
grid_num: 2,
onChange: function ( data ) {
self.container.find( '#deferred-output' ).addClass( 'is-disabled' ).append( loading );
},
onFinish: function ( data ) {
self.rangeOffset = data.from - self.offset;
self.rangeLimit = data.to - data.from;
self.doApiRequest();
}
} );
};
// Once called turn off the init flag
self.init = self.init === true ? false : self.init;
};
/**
* @since 3.0
*/
$( document ).ready( function() {
$( '.smw-deferred-query' ).each( function() {
var q = new Query(
$( this ),
new mw.Api()
);
q.doApiRequest();
} );
} );
}( jQuery, mediaWiki ) );
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