8 * @param {jQuery.Event} e
10 function doLivePreview( e ) {
11 var isDiff, api, request, postData, copySelectors, section,
12 $wikiPreview, $wikiDiff, $editform, $textbox, $summary, $copyElements, $spinner, $errorBox;
14 isDiff = ( e.target.name === 'wpDiff' );
15 $wikiPreview = $( '#wikiPreview' );
16 $wikiDiff = $( '#wikiDiff' );
17 $editform = $( '#editform' );
18 $textbox = $editform.find( '#wpTextbox1' );
19 $summary = $editform.find( '#wpSummary' );
20 $errorBox = $( '.errorbox' );
21 section = $editform.find( '[name="wpSection"]' ).val();
23 if ( $textbox.length === 0 ) {
26 // Show changes for a new section is not yet supported
27 if ( isDiff && section === 'new' ) {
32 // Remove any previously displayed errors
34 // Show #wikiPreview if it's hidden to be able to scroll to it
35 // (if it is hidden, it's also empty, so nothing changes in the rendering)
38 // Jump to where the preview will appear
39 $wikiPreview[0].scrollIntoView();
53 $copyElements = $( copySelectors.join( ',' ) );
55 // Not shown during normal preview, to be removed if present
56 $( '.mw-newarticletext' ).remove();
58 $spinner = $.createSpinner( {
62 $wikiPreview.before( $spinner );
64 marginTop: $spinner.height()
67 // Can't use fadeTo because it calls show(), and we might want to keep some elements hidden
68 // (e.g. empty #catlinks)
69 $copyElements.animate( { opacity: 0.4 }, 'fast' );
74 uselang: mw.config.get( 'wgUserLanguage' ),
75 title: mw.config.get( 'wgPageName' ),
76 text: $textbox.textSelection( 'getContents' ),
77 summary: $summary.textSelection( 'getContents' )
80 if ( section !== '' ) {
81 postData.sectionpreview = '';
82 if ( section === 'new' ) {
83 postData.section = section;
84 postData.sectiontitle = postData.summary;
91 // First PST the input, then diff it
92 postData.onlypst = '';
93 request = api.post( postData );
94 request.done( function ( response ) {
100 titles: mw.config.get( 'wgPageName' ),
101 rvdifftotext: response.parse.text['*'],
104 if ( section !== '' ) {
105 postData.rvsection = section;
107 return api.post( postData ).done( function ( result2 ) {
109 var diffHtml = result2.query.pages[result2.query.pageids[0]]
110 .revisions[0].diff['*'];
111 $wikiDiff.find( 'table.diff tbody' ).html( diffHtml );
113 // "result.blah is undefined" error, ignore
121 $.extend( postData, {
124 prop: 'text|displaytitle|modules|jsconfigvars|categorieshtml|templates|langlinks|limitreporthtml',
125 disableeditsection: true
127 request = api.post( postData );
128 request.done( function ( response ) {
129 var li, newList, $displaytitle, $content, $parent, $list;
130 if ( response.parse.jsconfigvars ) {
131 mw.config.set( response.parse.jsconfigvars );
133 if ( response.parse.modules ) {
134 mw.loader.load( response.parse.modules.concat(
135 response.parse.modulescripts,
136 response.parse.modulestyles,
137 response.parse.modulemessages ) );
139 if ( response.parse.displaytitle ) {
140 $displaytitle = $( $.parseHTML( response.parse.displaytitle ) );
141 $( '#firstHeading' ).msg(
142 mw.config.get( 'wgEditMessage', 'editing' ),
145 document.title = mw.msg(
148 mw.config.get( 'wgEditMessage', 'editing' ),
153 if ( response.parse.categorieshtml ) {
154 $( '#catlinks' ).replaceWith( response.parse.categorieshtml['*'] );
156 if ( response.parse.templates ) {
158 $.each( response.parse.templates, function ( i, template ) {
162 'href': mw.util.getUrl( template['*'] ),
163 'class': ( template.exists !== undefined ? '' : 'new' )
165 .text( template['*'] )
170 $editform.find( '.templatesUsed .mw-editfooter-list' ).detach().empty().append( newList ).appendTo( '.templatesUsed' );
172 if ( response.parse.limitreporthtml ) {
173 $( '.limitreport' ).html( response.parse.limitreporthtml['*'] );
175 if ( response.parse.langlinks && mw.config.get( 'skin' ) === 'vector' ) {
177 $.each( response.parse.langlinks, function ( i, langlink ) {
179 .addClass( 'interlanguage-link interwiki-' + langlink.lang )
182 'href': langlink.url,
183 'title': langlink['*'] + ' - ' + langlink.langname,
184 'lang': langlink.lang,
185 'hreflang': langlink.lang
187 .text( langlink.autonym )
191 $list = $( '#p-lang ul' );
192 $parent = $list.parent();
193 $list.detach().empty().append( newList ).prependTo( $parent );
196 if ( response.parse.text['*'] ) {
197 $content = $wikiPreview.children( '.mw-content-ltr,.mw-content-rtl' );
200 .html( response.parse.text['*'] );
202 mw.hook( 'wikipage.content' ).fire( $content );
205 $wikiPreview.append( $content );
212 request.done( function ( response ) {
213 var isSubject = ( section === 'new' ),
214 summaryMsg = isSubject ? 'subject-preview' : 'summary-preview';
215 if ( response.parse.parsedsummary ) {
216 $editform.find( '.mw-summary-preview' )
219 mw.message( summaryMsg ).parse(),
221 $( '<span>' ).addClass( 'comment' ).html(
222 // There is no equivalent to rawParams
223 mw.message( 'parentheses' ).escaped()
224 .replace( '$1', response.parse.parsedsummary['*'] )
229 request.always( function () {
231 $copyElements.animate( {
235 request.fail( function ( code, result ) {
236 var errorMsg = 'API error: ' + code;
237 if ( code === 'http' ) {
238 errorMsg = 'HTTP error: ';
239 if ( result.exception ) {
240 errorMsg += result.exception;
242 errorMsg += result.textStatus;
245 $errorBox = $( '<div>' )
246 .addClass( 'errorbox' )
247 .html( '<strong>' + mw.message( 'previewerrortext' ).escaped() + '</strong><br>' )
248 .append( document.createTextNode( errorMsg ) );
250 $wikiPreview.hide().before( $errorBox );
255 // Do not enable on user .js/.css pages, as there's no sane way of "previewing"
256 // the scripts or styles without reloading the page.
257 if ( $( '#mw-userjsyoucanpreview' ).length || $( '#mw-usercssyoucanpreview' ).length ) {
261 // The following elements can change in a preview but are not output
262 // by the server when they're empty until the preview response.
263 // TODO: Make the server output these always (in a hidden state), so we don't
264 // have to fish and (hopefully) put them in the right place (since skins
265 // can change where they are output).
267 if ( !document.getElementById( 'p-lang' ) && document.getElementById( 'p-tb' ) && mw.config.get( 'skin' ) === 'vector' ) {
268 $( '.portal:last' ).after(
272 'role': 'navigation',
273 'title': mw.msg( 'tooltip-p-lang' ),
274 'aria-labelledby': 'p-lang-label'
276 .append( $( '<h3>' ).attr( 'id', 'p-lang-label' ).text( mw.msg( 'otherlanguages' ) ) )
277 .append( $( '<div>' ).addClass( 'body' ).append( '<ul>' ) )
281 if ( !$( '.mw-summary-preview' ).length ) {
282 $( '#wpSummary' ).after(
283 $( '<div>' ).addClass( 'mw-summary-preview' )
287 if ( !document.getElementById( 'wikiDiff' ) && document.getElementById( 'wikiPreview' ) ) {
288 $( '#wikiPreview' ).after(
291 .attr( 'id', 'wikiDiff' )
292 .html( '<table class="diff"><col class="diff-marker"/><col class="diff-content"/>' +
293 '<col class="diff-marker"/><col class="diff-content"/><tbody/></table>' )
297 // This should be moved down to '#editform', but is kept on the body for now
298 // because the LiquidThreads extension is re-using this module with only half
299 // the EditPage (doesn't include #editform presumably, bug 55463).
300 $( document.body ).on( 'click', '#wpPreview, #wpDiff', doLivePreview );
303 }( mediaWiki, jQuery ) );