8 * @param {jQuery.Event} e
10 function doLivePreview( e
) {
11 var isDiff
, api
, parseRequest
, diffRequest
, 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 $spinner
= $( '.mw-spinner-preview' );
21 $errorBox
= $( '.errorbox' );
22 section
= $editform
.find( '[name="wpSection"]' ).val();
24 if ( $textbox
.length
=== 0 ) {
27 // Show changes for a new section is not yet supported
28 if ( isDiff
&& section
=== 'new' ) {
33 // Remove any previously displayed errors
35 // Show #wikiPreview if it's hidden to be able to scroll to it
36 // (if it is hidden, it's also empty, so nothing changes in the rendering)
39 // Jump to where the preview will appear
40 $wikiPreview
[ 0 ].scrollIntoView();
55 $copyElements
= $( copySelectors
.join( ',' ) );
57 // Not shown during normal preview, to be removed if present
58 $( '.mw-newarticletext' ).remove();
60 if ( $spinner
.length
=== 0 ) {
61 $spinner
= $.createSpinner( {
65 .addClass( 'mw-spinner-preview' )
66 .css( 'margin-top', '1em' );
67 $wikiPreview
.before( $spinner
);
72 // Can't use fadeTo because it calls show(), and we might want to keep some elements hidden
73 // (e.g. empty #catlinks)
74 $copyElements
.animate( { opacity
: 0.4 }, 'fast' );
80 title
: mw
.config
.get( 'wgPageName' ),
81 summary
: $summary
.textSelection( 'getContents' ),
88 if ( postData
.summary
) {
89 parseRequest
= api
.post( postData
);
92 diffRequest
= api
.post( {
96 titles
: mw
.config
.get( 'wgPageName' ),
97 rvdifftotext
: $textbox
.textSelection( 'getContents' ),
98 rvdifftotextpst
: true,
100 rvsection
: section
=== '' ? undefined : section
103 // Wait for the summary before showing the diff so the page doesn't jump twice
104 $.when( diffRequest
, parseRequest
).done( function ( response
) {
107 diffHtml
= response
[ 0 ].query
.pages
[ 0 ]
108 .revisions
[ 0 ].diff
.body
;
109 $wikiDiff
.find( 'table.diff tbody' ).html( diffHtml
);
110 mw
.hook( 'wikipage.diff' ).fire( $wikiDiff
.find( 'table.diff' ) );
112 // "result.blah is undefined" error, ignore
120 $.extend( postData
, {
121 prop
: 'text|indicators|displaytitle|modules|jsconfigvars|categorieshtml|templates|langlinks|limitreporthtml',
122 text
: $textbox
.textSelection( 'getContents' ),
125 sectionpreview
: section
!== '',
126 disableeditsection
: true,
127 useskin
: mw
.config
.get( 'skin' ),
128 uselang
: mw
.config
.get( 'wgUserLanguage' )
130 if ( section
=== 'new' ) {
131 postData
.section
= 'new';
132 postData
.sectiontitle
= postData
.summary
;
135 parseRequest
= api
.post( postData
);
136 parseRequest
.done( function ( response
) {
137 var li
, newList
, $displaytitle
, $content
, $parent
, $list
;
138 if ( response
.parse
.jsconfigvars
) {
139 mw
.config
.set( response
.parse
.jsconfigvars
);
141 if ( response
.parse
.modules
) {
142 mw
.loader
.load( response
.parse
.modules
.concat(
143 response
.parse
.modulescripts
,
144 response
.parse
.modulestyles
149 $.each( response
.parse
.indicators
, function ( name
, indicator
) {
152 .addClass( 'mw-indicator' )
153 .attr( 'id', mw
.util
.escapeId( 'mw-indicator-' + name
) )
156 // Add a whitespace between the <div>s because
157 // they get displayed with display: inline-block
158 document
.createTextNode( '\n' )
161 $( '.mw-indicators' ).empty().append( newList
);
163 if ( response
.parse
.displaytitle
) {
164 $displaytitle
= $( $.parseHTML( response
.parse
.displaytitle
) );
165 $( '#firstHeading' ).msg(
166 mw
.config
.get( 'wgEditMessage', 'editing' ),
169 document
.title
= mw
.msg(
172 mw
.config
.get( 'wgEditMessage', 'editing' ),
177 if ( response
.parse
.categorieshtml
) {
178 $content
= $( $.parseHTML( response
.parse
.categorieshtml
) );
179 mw
.hook( 'wikipage.categories' ).fire( $content
);
180 $( '.catlinks[data-mw="interface"]' ).replaceWith( $content
);
182 if ( response
.parse
.templates
) {
184 $.each( response
.parse
.templates
, function ( i
, template
) {
188 href
: mw
.util
.getUrl( template
.title
),
189 'class': ( template
.exists
? '' : 'new' )
191 .text( template
.title
)
196 $editform
.find( '.templatesUsed .mw-editfooter-list' ).detach().empty().append( newList
).appendTo( '.templatesUsed' );
198 if ( response
.parse
.limitreporthtml
) {
199 $( '.limitreport' ).html( response
.parse
.limitreporthtml
);
201 if ( response
.parse
.langlinks
&& mw
.config
.get( 'skin' ) === 'vector' ) {
203 $.each( response
.parse
.langlinks
, function ( i
, langlink
) {
205 .addClass( 'interlanguage-link interwiki-' + langlink
.lang
)
209 title
: langlink
.title
+ ' - ' + langlink
.langname
,
211 hreflang
: langlink
.lang
213 .text( langlink
.autonym
)
217 $list
= $( '#p-lang ul' );
218 $parent
= $list
.parent();
219 $list
.detach().empty().append( newList
).prependTo( $parent
);
222 if ( response
.parse
.text
) {
223 $content
= $wikiPreview
.children( '.mw-content-ltr,.mw-content-rtl' );
226 .html( response
.parse
.text
);
228 mw
.hook( 'wikipage.content' ).fire( $content
);
231 $wikiPreview
.append( $content
);
237 $.when( parseRequest
, diffRequest
).done( function ( parseResp
) {
238 var parse
= parseResp
&& parseResp
[ 0 ].parse
,
239 isSubject
= ( section
=== 'new' ),
240 summaryMsg
= isSubject
? 'subject-preview' : 'summary-preview',
241 $summaryPreview
= $editform
.find( '.mw-summary-preview' ).empty();
242 if ( parse
&& parse
.parsedsummary
) {
243 $summaryPreview
.append(
244 mw
.message( summaryMsg
).parse(),
246 $( '<span>' ).addClass( 'comment' ).html(
247 // There is no equivalent to rawParams
248 mw
.message( 'parentheses' ).escaped()
249 // .replace() use $ as start of a pattern.
250 // $$ is the pattern for '$'.
251 // The inner .replace() duplicates any $ and
252 // the outer .replace() simplifies the $$.
253 .replace( '$1', parse
.parsedsummary
.replace( /\$/g, '$$$$' ) )
257 mw
.hook( 'wikipage.editform' ).fire( $editform
);
258 } ).always( function () {
260 $copyElements
.animate( {
263 } ).fail( function ( code
, result
) {
264 // This just shows the error for whatever request failed first
265 var errorMsg
= 'API error: ' + code
;
266 if ( code
=== 'http' ) {
267 errorMsg
= 'HTTP error: ';
268 if ( result
.exception
) {
269 errorMsg
+= result
.exception
;
271 errorMsg
+= result
.textStatus
;
274 $errorBox
= $( '<div>' )
275 .addClass( 'errorbox' )
276 .html( '<strong>' + mw
.message( 'previewerrortext' ).escaped() + '</strong><br>' )
277 .append( document
.createTextNode( errorMsg
) );
279 $wikiPreview
.hide().before( $errorBox
);
284 // Do not enable on user .js/.css pages, as there's no sane way of "previewing"
285 // the scripts or styles without reloading the page.
286 if ( $( '#mw-userjsyoucanpreview' ).length
|| $( '#mw-usercssyoucanpreview' ).length
) {
290 // The following elements can change in a preview but are not output
291 // by the server when they're empty until the preview response.
292 // TODO: Make the server output these always (in a hidden state), so we don't
293 // have to fish and (hopefully) put them in the right place (since skins
294 // can change where they are output).
296 if ( !document
.getElementById( 'p-lang' ) && document
.getElementById( 'p-tb' ) && mw
.config
.get( 'skin' ) === 'vector' ) {
297 $( '.portal:last' ).after(
302 'aria-labelledby': 'p-lang-label'
304 .append( $( '<h3>' ).attr( 'id', 'p-lang-label' ).text( mw
.msg( 'otherlanguages' ) ) )
305 .append( $( '<div>' ).addClass( 'body' ).append( '<ul>' ) )
309 if ( !$( '.mw-summary-preview' ).length
) {
310 $( '#wpSummary' ).after(
311 $( '<div>' ).addClass( 'mw-summary-preview' )
315 if ( !document
.getElementById( 'wikiDiff' ) && document
.getElementById( 'wikiPreview' ) ) {
316 $( '#wikiPreview' ).after(
319 .attr( 'id', 'wikiDiff' )
320 .html( '<table class="diff"><col class="diff-marker"/><col class="diff-content"/>' +
321 '<col class="diff-marker"/><col class="diff-content"/><tbody/></table>' )
325 // This should be moved down to '#editform', but is kept on the body for now
326 // because the LiquidThreads extension is re-using this module with only half
327 // the EditPage (doesn't include #editform presumably, T57463).
328 $( document
.body
).on( 'click', '#wpPreview, #wpDiff', doLivePreview
);
331 }( mediaWiki
, jQuery
) );