mediawiki-extensions-Visual.../modules/ve-mw/init/targets/ve.init.mw.ViewPageTarget.init.js
Ori Livneh 13292744b1 Emit activation entry/exit traces at the appropriate times
Due to changes in the way VisualEditor is loaded, the trace.activate.{enter,exit}
events no longer enclose the entire VisualEditor initialization process. This
change ensures that trace.activate.enter is emitted as soon as the user clicks
on an edit link / tab and that the trace.activate.exit is not emitted until the
toolbar has been fully activated.

Change-Id: Ief798faa95a58898b9ae4dcbbbd30506c5dbd9a7
2015-03-23 23:19:12 +00:00

566 lines
19 KiB
JavaScript

/*!
* VisualEditor MediaWiki ViewPageTarget init.
*
* This file must remain as widely compatible as the base compatibility
* for MediaWiki itself (see mediawiki/core:/resources/startup.js).
* Avoid use of: ES5, SVG, HTML5 DOM, ContentEditable etc.
*
* @copyright 2011-2015 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/**
* Platform preparation for the MediaWiki view page. This loads (when user needs it) the
* actual MediaWiki integration and VisualEditor library.
*
* @class mw.libs.ve
* @alternateClassName ve.init.mw.ViewPageTarget.init
* @singleton
*/
( function () {
var conf, tabMessages, uri, pageExists, viewUri, veEditUri, isViewPage,
init, support, targetPromise, enable, tempdisable, userPrefEnabled,
plugins = [];
function showLoading() {
if ( !init.$loading ) {
init.$loading = $(
'<div class="ve-init-mw-viewPageTarget-loading-overlay">' +
'<div class="ve-init-mw-viewPageTarget-progress">' +
'<div class="ve-init-mw-viewPageTarget-progress-bar"></div>' +
'</div>' +
'</div>'
);
}
var $content = $( '#content' ),
contentRect = $content[0].getBoundingClientRect(),
offsetTop = $content.offset().top,
windowHeight = $( window ).height(),
top = Math.max( contentRect.top, 0 ),
bottom = Math.min( contentRect.bottom, windowHeight ),
middle = ( top + bottom ) / 2;
init.$loading.css( 'top', middle - offsetTop );
$content.prepend( init.$loading );
}
function setLoadingProgress( target, duration ) {
var $bar = init.$loading.find( '.ve-init-mw-viewPageTarget-progress-bar' ).stop();
if ( duration ) {
$bar.animate( { width: target + '%' }, duration );
} else {
$bar.css( 'width', target + '%' );
}
}
function hideLoading() {
if ( init.$loading ) {
init.$loading.detach();
}
}
/**
* Use deferreds to avoid loading and instantiating Target multiple times.
* @private
* @return {jQuery.Promise}
*/
function getTarget() {
if ( !targetPromise ) {
// The TargetLoader module is loaded in the bottom queue, so it should have been
// requested already but it might not have finished loading yet
targetPromise = mw.loader.using( 'ext.visualEditor.targetLoader' )
.then( function () {
// Add modules specific to desktop (modules shared between desktop
// and mobile are already added by TargetLoader)
// Note: it's safe to use .forEach() (ES5) here, because this code will
// never be called if the browser doesn't support ES5
[
'ext.visualEditor.viewPageTarget',
'ext.visualEditor.mwformatting',
'ext.visualEditor.mwgallery',
'ext.visualEditor.mwimage',
'ext.visualEditor.mwmeta'
].forEach( mw.libs.ve.targetLoader.addPlugin );
// Add requested plugins
plugins.forEach( mw.libs.ve.targetLoader.addPlugin );
plugins = [];
return mw.libs.ve.targetLoader.loadModules();
} )
.then( function () {
// Transfer methods
ve.init.mw.ViewPageTarget.prototype.setupSectionEditLinks = init.setupSectionLinks;
var target = new ve.init.mw.ViewPageTarget();
$( '#content' ).append( target.$element );
return target;
}, function ( e ) {
mw.log.warn( 'VisualEditor failed to load: ' + e );
} );
}
return targetPromise;
}
/**
* Load and activate the target.
*
* If you need to call methods on the target before activate is called, call getTarget()
* yourself, chain your work onto that promise, and pass that chained promise in as targetPromise.
* E.g. `activateTarget( getTarget().then( function( target ) { target.doAThing(); } ) );`
*
* @private
* @param {jQuery.Promise} [targetPromise] Promise that will be resolved with a ve.init.mw.Target
*/
function activateTarget( targetPromise ) {
// The TargetLoader module is loaded in the bottom queue, so it should have been
// requested already but it might not have finished loading yet
var dataPromise = mw.loader.using( 'ext.visualEditor.targetLoader' )
.then( function () {
return mw.libs.ve.targetLoader.requestPageData(
mw.config.get( 'wgRelevantPageName' ),
uri.query.oldid
);
} );
$( 'html' ).addClass( 've-activated ve-loading' );
showLoading();
setLoadingProgress( 70, 3000 );
targetPromise = targetPromise || getTarget();
targetPromise
.then( function ( target ) {
setLoadingProgress( 100, 1000 );
return target.activate( dataPromise );
} )
.then( function () {
setLoadingProgress( 0 );
ve.track( 'mwedit.ready' );
} )
.always( hideLoading );
}
conf = mw.config.get( 'wgVisualEditorConfig' );
tabMessages = conf.tabMessages;
uri = new mw.Uri();
pageExists = !!mw.config.get( 'wgRelevantArticleId' );
viewUri = new mw.Uri( mw.util.getUrl( mw.config.get( 'wgRelevantPageName' ) ) );
isViewPage = (
mw.config.get( 'wgIsArticle' ) &&
!( 'diff' in uri.query )
);
// On a view page, extend the current URI so parameters like oldid are carried over
// On a non-view page, use viewUri
veEditUri = ( isViewPage ? uri : viewUri ).clone().extend( { veaction: 'edit' } );
support = {
es5: !!(
// It would be much easier to do a quick inline function that asserts "use strict"
// works, but since IE9 doesn't support strict mode (and we don't use strict mode) we
// have to instead list all the ES5 features we do use.
Array.isArray &&
Array.prototype.filter &&
Array.prototype.indexOf &&
Array.prototype.map &&
Date.now &&
Date.prototype.toJSON &&
Object.create &&
Object.keys &&
String.prototype.trim &&
window.JSON &&
JSON.parse &&
JSON.stringify &&
Function.prototype.bind
),
contentEditable: 'contentEditable' in document.createElement( 'div' ),
svg: !!(
document.createElementNS &&
document.createElementNS( 'http://www.w3.org/2000/svg', 'svg' ).createSVGRect
)
};
init = {
support: support,
blacklist: conf.blacklist,
/**
* Add a plugin module or function.
*
* Plugins are run after VisualEditor is loaded, but before it is initialized. This allows
* plugins to add classes and register them with the factories and registries.
*
* The parameter to this function can be a ResourceLoader module name or a function.
*
* If it's a module name, it will be loaded together with the VisualEditor core modules when
* VE is loaded. No special care is taken to ensure that the module runs after the VE
* classes are loaded, so if this is desired, the module should depend on
* ext.visualEditor.core .
*
* If it's a function, it will be invoked once the VisualEditor core modules and any
* plugin modules registered through this function have been loaded, but before the editor
* is intialized. The function can optionally return a jQuery.Promise . VisualEditor will
* only be initialized once all promises returned by plugin functions have been resolved.
*
* // Register ResourceLoader module
* mw.libs.ve.addPlugin( 'ext.gadget.foobar' );
*
* // Register a callback
* mw.libs.ve.addPlugin( function ( target ) {
* ve.dm.Foobar = .....
* } );
*
* // Register a callback that loads another script
* mw.libs.ve.addPlugin( function () {
* return $.getScript( 'http://example.com/foobar.js' );
* } );
*
* @param {string|Function} plugin Module name or callback that optionally returns a promise
*/
addPlugin: function ( plugin ) {
plugins.push( plugin );
},
setupSkin: function () {
init.setupTabs();
init.setupSectionLinks();
},
setupTabs: function () {
// HACK: Remove this when the Education Program offers a proper way to detect and disable.
if (
// HACK: Work around jscs.requireCamelCaseOrUpperCaseIdentifiers
mw.config.get( 'wgNamespaceIds' )[ true && 'education_program' ] === mw.config.get( 'wgNamespaceNumber' )
) {
return;
}
var caVeEdit,
action = pageExists ? 'edit' : 'create',
pTabsId = $( '#p-views' ).length ? 'p-views' : 'p-cactions',
$caSource = $( '#ca-viewsource' ),
$caEdit = $( '#ca-edit' ),
$caVeEdit = $( '#ca-ve-edit' ),
$caEditLink = $caEdit.find( 'a' ),
$caVeEditLink = $caVeEdit.find( 'a' ),
reverseTabOrder = $( 'body' ).hasClass( 'rtl' ) && pTabsId === 'p-views',
/*jshint bitwise:false */
caVeEditNextnode = ( reverseTabOrder ^ conf.tabPosition === 'before' ) ? $caEdit.get( 0 ) : $caEdit.next().get( 0 );
if ( !$caVeEdit.length ) {
// The below duplicates the functionality of VisualEditorHooks::onSkinTemplateNavigation()
// in case we're running on a cached page that doesn't have these tabs yet.
// If there is no edit tab or a view-source tab,
// the user doesn't have permission to edit.
if ( $caEdit.length && !$caSource.length ) {
// Add the VisualEditor tab (#ca-ve-edit)
caVeEdit = mw.util.addPortletLink(
pTabsId,
// Use url instead of '#'.
// So that 1) one can always open it in a new tab, even when
// onEditTabClick is bound.
// 2) when onEditTabClick is not bound (!isViewPage) it will
// just work.
veEditUri,
tabMessages[action] !== null ? mw.msg( tabMessages[action] ) : $caEditLink.text(),
'ca-ve-edit',
mw.msg( 'tooltip-ca-ve-edit' ),
mw.msg( 'accesskey-ca-ve-edit' ),
caVeEditNextnode
);
$caVeEdit = $( caVeEdit );
$caVeEditLink = $caVeEdit.find( 'a' );
}
} else if ( $caEdit.length && $caVeEdit.length ) {
// Make the state of the page consistent with the config if needed
/*jshint bitwise:false */
if ( reverseTabOrder ^ conf.tabPosition === 'before' ) {
if ( $caEdit[0].nextSibling === $caVeEdit[0] ) {
$caVeEdit.after( $caEdit );
}
} else {
if ( $caVeEdit[0].nextSibling === $caEdit[0] ) {
$caEdit.after( $caVeEdit );
}
}
if ( tabMessages[action] !== null ) {
$caVeEditLink.text( mw.msg( tabMessages[action] ) );
}
}
// If the edit tab is hidden, remove it.
if ( !( init.isAvailable && userPrefEnabled ) ) {
$caVeEdit.remove();
}
// Alter the edit tab (#ca-edit)
if ( $( '#ca-view-foreign' ).length ) {
if ( tabMessages[action + 'localdescriptionsource'] !== null ) {
$caEditLink.text( mw.msg( tabMessages[action + 'localdescriptionsource'] ) );
}
} else {
if ( tabMessages[action + 'source'] !== null ) {
$caEditLink.text( mw.msg( tabMessages[action + 'source'] ) );
}
}
if ( conf.tabPosition === 'before' ) {
$caEdit.addClass( 'collapsible' );
} else {
$caVeEdit.addClass( 'collapsible' );
}
// Process appendix messages
if ( tabMessages[action + 'appendix'] !== null ) {
$caVeEditLink.append(
$( '<span>' )
.addClass( 've-tabmessage-appendix' )
.text( mw.msg( tabMessages[action + 'appendix'] ) )
);
}
if ( tabMessages[action + 'sourceappendix'] !== null ) {
$caEditLink.append(
$( '<span>' )
.addClass( 've-tabmessage-appendix' )
.text( mw.msg( tabMessages[action + 'sourceappendix'] ) )
);
}
if ( isViewPage ) {
// Allow instant switching to edit mode, without refresh
$caVeEdit.click( init.onEditTabClick );
}
},
setupSectionLinks: function () {
var $editsections = $( '#mw-content-text .mw-editsection' ),
bodyDir = $( 'body' ).css( 'direction' );
// Match direction of the user interface
// TODO: Why is this needed? It seems to work fine without.
if ( $editsections.css( 'direction' ) !== bodyDir ) {
// Avoid creating inline style attributes if the inherited value is already correct
$editsections.css( 'direction', bodyDir );
}
// The "visibility" css construct ensures we always occupy the same space in the layout.
// This prevents the heading from changing its wrap when the user toggles editSourceLink.
if ( $editsections.find( '.mw-editsection-visualeditor' ).length === 0 ) {
// If PHP didn't build the section edit links (because of caching), build them
$editsections.each( function () {
var $editsection = $( this ),
$editSourceLink = $editsection.find( 'a' ).eq( 0 ),
$editLink = $editSourceLink.clone(),
$divider = $( '<span>' ),
dividerText = mw.msg( 'pipe-separator' );
if ( tabMessages.editsectionsource !== null ) {
$editSourceLink.text( mw.msg( tabMessages.editsectionsource ) );
}
if ( tabMessages.editsection !== null ) {
$editLink.text( mw.msg( tabMessages.editsection ) );
}
$divider
.addClass( 'mw-editsection-divider' )
.text( dividerText );
// Don't mess with section edit links on foreign file description pages
// (bug 54259)
if ( !$( '#ca-view-foreign' ).length ) {
$editLink
.attr( 'href', function ( i, val ) {
return new mw.Uri( veEditUri ).extend( {
vesection: new mw.Uri( val ).query.section
} );
} )
.addClass( 'mw-editsection-visualeditor' );
if ( conf.tabPosition === 'before' ) {
$editSourceLink.before( $editLink, $divider );
} else {
$editSourceLink.after( $divider, $editLink );
}
}
} );
}
// Process appendix messages
if ( tabMessages.editsectionappendix ) {
$editsections.find( '.mw-editsection-visualeditor' )
.append(
$( '<span>' )
.addClass( 've-tabmessage-appendix' )
.text( mw.msg( tabMessages.editsectionappendix ) )
);
}
if ( tabMessages.editsectionsourceappendix ) {
$editsections.find( 'a:not(.mw-editsection-visualeditor)' )
.append(
$( '<span>' )
.addClass( 've-tabmessage-appendix' )
.text( mw.msg( tabMessages.editsectionsourceappendix ) )
);
}
if ( isViewPage ) {
// Only init without refresh if we're on a view page. Though section edit links
// are rarely shown on non-view pages, they appear in one other case, namely
// when on a diff against the latest version of a page. In that case we mustn't
// init without refresh as that'd initialise for the wrong rev id (bug 50925)
// and would preserve the wrong DOM with a diff on top.
$editsections
.find( '.mw-editsection-visualeditor' )
.click( init.onEditSectionLinkClick )
;
}
},
onEditTabClick: function ( e ) {
// Default mouse button is normalised by jQuery to key code 1.
// Only do our handling if no keys are pressed, mouse button is 1
// (e.g. not middle click or right click) and no modifier keys
// (e.g. cmd-click to open in new tab).
if ( ( e.which && e.which !== 1 ) || e.shiftKey || e.altKey || e.ctrlKey || e.metaKey ) {
return;
}
ve.track( 'trace.activate.enter' );
ve.track( 'mwedit.init', { type: 'page', mechanism: 'click' } );
if ( history.pushState && uri.query.veaction !== 'edit' ) {
// Replace the current state with one that is tagged as ours, to prevent the
// back button from breaking when used to exit VE. FIXME: there should be a better
// way to do this. See also similar code in the ViewPageTarget constructor.
history.replaceState( { tag: 'visualeditor' }, document.title, uri );
// Set veaction to edit
history.pushState( { tag: 'visualeditor' }, document.title, veEditUri );
// Update mw.Uri instance
uri = veEditUri;
}
e.preventDefault();
activateTarget();
},
onEditSectionLinkClick: function ( e ) {
var targetPromise;
if ( ( e.which && e.which !== 1 ) || e.shiftKey || e.altKey || e.ctrlKey || e.metaKey ) {
return;
}
ve.track( 'trace.activate.enter' );
ve.track( 'mwedit.init', { type: 'section', mechanism: 'click' } );
if ( history.pushState && uri.query.veaction !== 'edit' ) {
// Replace the current state with one that is tagged as ours, to prevent the
// back button from breaking when used to exit VE. FIXME: there should be a better
// way to do this. See also similar code in the ViewPageTarget constructor.
history.replaceState( { tag: 'visualeditor' }, document.title, uri );
// Change the state to the href of the section link that was clicked. This saves
// us from having to figure out the section number again.
history.pushState( { tag: 'visualeditor' }, document.title, this.href );
}
e.preventDefault();
targetPromise = getTarget().then( function ( target ) {
target.saveEditSection( $( e.target ).closest( 'h1, h2, h3, h4, h5, h6' ).get( 0 ) );
return target;
} );
activateTarget( targetPromise );
}
};
support.visualEditor = support.es5 &&
support.contentEditable &&
support.svg &&
( ( 'vewhitelist' in uri.query ) || !$.client.test( init.blacklist, null, true ) );
// Cast "0" (T89513)
enable = Number( mw.user.options.get( 'visualeditor-enable' ) );
tempdisable = Number( mw.user.options.get( 'visualeditor-betatempdisable' ) );
userPrefEnabled = (
// Allow disabling for anonymous users separately from changing the
// default preference (bug 50000)
!( conf.disableForAnons && mw.config.get( 'wgUserName' ) === null ) &&
// User has 'visualeditor-enable' preference enabled (for alpha opt-in)
// User has 'visualeditor-betatempdisable' preference disabled
enable && !tempdisable
);
// Whether VisualEditor should be available for the current user, page, wiki, mediawiki skin,
// browser etc.
init.isAvailable = (
support.visualEditor &&
// Only in supported skins
$.inArray( mw.config.get( 'skin' ), conf.skins ) !== -1 &&
// Only in enabled namespaces
$.inArray(
new mw.Title( mw.config.get( 'wgRelevantPageName' ) ).getNamespaceId(),
conf.namespaces
) !== -1 &&
// Not on pages which are outputs of the Page Translation feature
mw.config.get( 'wgTranslatePageTranslation' ) !== 'translation' &&
// Only for pages with a wikitext content model
mw.config.get( 'wgPageContentModel' ) === 'wikitext'
);
// Note: Though VisualEditor itself only needs this exposure for a very small reason
// (namely to access init.blacklist from the unit tests...) this has become one of the nicest
// ways to easily detect whether the VisualEditor initialisation code is present.
//
// The VE global was once available always, but now that platform integration initialisation
// is properly separated, it doesn't exist until the platform loads VisualEditor core.
//
// Most of mw.libs.ve is considered subject to change and private. The exception is that
// mw.libs.ve.isAvailable is public, and indicates whether the VE editor itself can be loaded
// on this page. See above for why it may be false.
mw.libs.ve = init;
if ( init.isAvailable && userPrefEnabled ) {
$( 'html' ).addClass( 've-available' );
} else {
$( 'html' ).addClass( 've-not-available' );
// Don't return here because we do want the skin setup to consistently happen
// for e.g. "Edit" > "Edit source" even when VE is not available.
}
$( function () {
var currentUri = new mw.Uri( location.href ),
isSection;
if ( init.isAvailable ) {
if ( isViewPage && uri.query.veaction === 'edit' ) {
isSection = uri.query.vesection !== undefined;
ve.track( 'trace.activate.enter' );
ve.track( 'mwedit.init', { type: isSection ? 'section' : 'page', mechanism: 'url' } );
activateTarget();
}
}
if ( userPrefEnabled ) {
init.setupSkin();
}
if ( currentUri.query.venotify ) {
// The following messages can be used here:
// postedit-confirmation-saved
// postedit-confirmation-created
// postedit-confirmation-restored
mw.hook( 'postEdit' ).fire( {
message: mw.msg( 'postedit-confirmation-' + currentUri.query.venotify, mw.user )
} );
delete currentUri.query.venotify;
}
} );
}() );