mediawiki-extensions-Visual.../modules/ve-mw/init/targets/ve.init.mw.ViewPageTarget.init.js

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/*!
* 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 2011-2013 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/*global mw */
/**
* Platform preparation for the MediaWiki view page. This loads (when user needs it) the
* actual MediaWiki integration and VisualEditor library.
*
* @class ve.init.mw.ViewPageTarget.init
* @singleton
*/
( function () {
var conf, uri, pageExists, viewUri, veEditUri, isViewPage,
init, isBlacklisted, getTargetDeferred;
/**
* Use deferreds to avoid loading and instantiating Target multiple times.
* @return {jQuery.Promise}
*/
function getTarget() {
var loadTargetDeferred;
if ( !getTargetDeferred ) {
getTargetDeferred = $.Deferred();
loadTargetDeferred = $.Deferred()
.done( function () {
var target = new ve.init.mw.ViewPageTarget();
ve.init.mw.targets.push( target );
// Transfer methods
ve.init.mw.ViewPageTarget.prototype.setupSectionEditLinks = init.setupSectionEditLinks;
getTargetDeferred.resolve( target );
} )
.fail( getTargetDeferred.reject );
mw.loader.using( 'ext.visualEditor.viewPageTarget', loadTargetDeferred.resolve, loadTargetDeferred.reject );
}
return getTargetDeferred.promise();
}
conf = mw.config.get( 'wgVisualEditorConfig' );
uri = new mw.Uri();
pageExists = !!mw.config.get( 'wgArticleId' );
viewUri = new mw.Uri( mw.util.wikiGetlink( mw.config.get( 'wgRelevantPageName' ) ) );
veEditUri = viewUri.clone().extend( { 'veaction': 'edit' } );
isViewPage = (
mw.config.get( 'wgAction' ) === 'view' &&
!( 'diff' in uri.query )
);
init = {
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.prototype.toJSON &&
Function.prototype.bind &&
Object.create &&
Object.keys &&
String.prototype.trim &&
window.JSON &&
JSON.parse &&
JSON.stringify
),
contentEditable: 'contentEditable' in document.createElement( 'div' )
},
blacklist: {
// IE <= 8 has various incompatibilities in layout and feature support
// IE9 and IE10 generally work but fail in ajax handling when making POST
// requests to the VisualEditor/Parsoid API which is causing silent failures
// when trying to save a page (bug 49187)
'msie': [['<=', 10]],
// Android 2.x and below "support" CE but don't trigger keyboard input
'android': [['<', 3]],
// Firefox issues in versions 12 and below (bug 50780)
// Wikilink [[./]] bug in Firefox 14 and below (bug 50720)
'firefox': [['<=', 14]],
// Blacklist all versions:
'opera': null,
'blackberry': null
},
skinSetup: function () {
init.setupTabLayout();
init.setupSectionEditLinks();
},
setupTabLayout: function () {
var caVeEdit, caVeEditSource,
action = pageExists ? 'edit' : 'create',
pTabsId = $( '#p-views' ).length ? 'p-views' : 'p-cactions',
$caSource = $( '#ca-viewsource' ),
$caEdit = $( '#ca-edit' ),
$caEditLink = $caEdit.find( 'a' ),
reverseTabOrder = $( 'body' ).hasClass( 'rtl' ) && pTabsId === 'p-views',
caVeEditNextnode = reverseTabOrder ? $caEdit.get( 0 ) : $caEdit.next().get( 0 );
if ( !$caEdit.length || $caSource.length ) {
// If there is no edit tab or a view-source tab,
// the user doesn't have permission to edit.
return;
}
// Add independent "VisualEditor" tab (#ca-ve-edit).
if ( conf.tabLayout === 'add' ) {
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,
// visualeditor-ca-ve-create
// visualeditor-ca-ve-edit
mw.msg( 'visualeditor-ca-ve-' + action ),
'ca-ve-edit',
mw.msg( 'tooltip-ca-ve-edit' ),
mw.msg( 'accesskey-ca-ve-edit' ),
caVeEditNextnode
);
// Replace "Edit" tab with a veEditUri version, add "Edit source" tab.
} else {
// Create "Edit source" link.
// Re-create instead of convert ca-edit since we don't want to copy over accesskey etc.
caVeEditSource = mw.util.addPortletLink(
pTabsId,
// Use original href to preserve oldid etc. (bug 38125)
$caEditLink.attr( 'href' ),
// visualeditor-ca-createsource
// visualeditor-ca-editsource
mw.msg( 'visualeditor-ca-' + action + 'source' ),
'ca-editsource',
// tooltip-ca-editsource
// tooltip-ca-createsource
mw.msg( 'tooltip-ca-' + action + 'source' ),
mw.msg( 'accesskey-ca-editsource' ),
caVeEditNextnode
);
// Copy over classes (e.g. 'selected')
$( caVeEditSource ).addClass( $caEdit.attr( 'class' ) );
// Create "Edit" tab.
$caEdit.remove();
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,
$caEditLink.text(),
$caEdit.attr( 'id' ),
$caEditLink.attr( 'title' ),
mw.msg( 'accesskey-ca-ve-edit' ),
reverseTabOrder ? caVeEditSource.nextSibling : caVeEditSource
);
}
if ( isViewPage ) {
// Allow instant switching to edit mode, without refresh
$( caVeEdit ).click( init.onEditTabClick );
}
},
setupSectionEditLinks: function () {
var $editsections = $( '#mw-content-text .mw-editsection' );
// match direction to the user interface
$editsections.css( 'direction', $( 'body' ).css( 'direction' ) );
// 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.
$editsections.each( function () {
var $closingBracket, $expandedOnly, $hiddenBracket, $outerClosingBracket,
expandTimeout, shrinkTimeout,
$editsection = $( this ),
$heading = $editsection.closest( 'h1, h2, h3, h4, h5, h6' ),
$editLink = $editsection.find( 'a' ).eq( 0 ),
$editSourceLink = $editLink.clone(),
$links = $editLink.add( $editSourceLink ),
$divider = $( '<span>' ),
dividerText = $.trim( mw.msg( 'pipe-separator' ) ),
$brackets = $( [ this.firstChild, this.lastChild ] );
function expandSoon() {
// Cancel pending shrink, schedule expansion instead
clearTimeout( shrinkTimeout );
expandTimeout = setTimeout( expand, 100 );
}
function expand() {
clearTimeout( shrinkTimeout );
$closingBracket.css( 'visibility', 'hidden' );
$expandedOnly.css( 'visibility', 'visible' );
$heading.addClass( 'mw-editsection-expanded' );
}
function shrinkSoon() {
// Cancel pending expansion, schedule shrink instead
clearTimeout( expandTimeout );
shrinkTimeout = setTimeout( shrink, 100 );
}
function shrink() {
clearTimeout( expandTimeout );
if ( !$links.is( ':focus' ) ) {
$closingBracket.css( 'visibility', 'visible' );
$expandedOnly.css( 'visibility', 'hidden' );
$heading.removeClass( 'mw-editsection-expanded' );
}
}
// TODO: Remove this (see Id27555c6 in mediawiki/core)
if ( !$brackets.hasClass( 'mw-editsection-bracket' ) ) {
$brackets = $brackets
.wrap( $( '<span>' ).addClass( 'mw-editsection-bracket' ) )
.parent();
}
$closingBracket = $brackets.last();
$outerClosingBracket = $closingBracket.clone();
$expandedOnly = $divider.add( $editSourceLink ).add( $outerClosingBracket )
.css( 'visibility', 'hidden' );
// The hidden bracket after the devider ensures we have balanced space before and after
// divider. The space before the devider is provided by the original closing bracket.
$hiddenBracket = $closingBracket.clone().css( 'visibility', 'hidden' );
// Events
$heading.on( { 'mouseenter': expandSoon, 'mouseleave': shrinkSoon } );
$links.on( { 'focus': expand, 'blur': shrinkSoon } );
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.
$editLink.click( init.onEditSectionLinkClick );
}
// Initialization
$editSourceLink
.addClass( 'mw-editsection-link-secondary' )
.text( mw.msg( 'visualeditor-ca-editsource-section' ) );
$divider
.addClass( 'mw-editsection-divider' )
.text( dividerText );
$editLink
.attr( 'href', function ( i, val ) {
return new mw.Uri( veEditUri ).extend( {
'vesection': new mw.Uri( val ).query.section
} );
} )
.addClass( 'mw-editsection-link-primary' );
$closingBracket
.after( $divider, $hiddenBracket, $editSourceLink, $outerClosingBracket );
} );
},
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;
}
e.preventDefault();
getTarget().done( function ( target ) {
target.logEvent( 'Edit', { action: 'edit-link-click' } );
target.activate();
} );
},
onEditSectionLinkClick: function ( e ) {
if ( ( e.which && e.which !== 1 ) || e.shiftKey || e.altKey || e.ctrlKey || e.metaKey ) {
return;
}
e.preventDefault();
getTarget().done( function ( target ) {
target.logEvent( 'Edit', { action: 'section-edit-link-click' } );
target.saveEditSection( $( e.target ).closest( 'h1, h2, h3, h4, h5, h6' ).get( 0 ) );
target.activate();
} );
}
};
// 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 VisualEditor is present on this page. The VE global was once
// available always, but now that platform integration initialisation is propertly separated,
// it doesn't exist until the platform loads VisualEditor core. Though mw.libs.ve shouldn't be
// considered an API (the methods are subject to change and considered private), the presence
// of this property should be reliable.
mw.libs.ve = init;
isBlacklisted = !( 'vewhitelist' in uri.query ) && $.client.test( init.blacklist, null, true );
if ( !init.support.es5 || !init.support.contentEditable || isBlacklisted ) {
mw.log( 'Browser does not support VisualEditor' );
return;
}
$( function () {
if ( isViewPage ) {
if ( uri.query.veaction === 'edit' ) {
getTarget().done( function ( target ) {
target.activate();
} );
}
}
init.skinSetup();
} );
}() );