mediawiki-extensions-Cite/modules/ve-cite/ve.ce.MWReferencesListNode.js
Ed Sanders 299e5d3655 Avoid exceptions if node teardown happens before setup
Change-Id: I7f55091023a3c0e92ce216e51f24bbc423f136c7
2021-06-03 22:50:44 +01:00

312 lines
8.2 KiB
JavaScript

/*!
* VisualEditor ContentEditable MWReferencesListNode class.
*
* @copyright 2011-2018 VisualEditor Team's Cite sub-team and others; see AUTHORS.txt
* @license MIT
*/
/**
* ContentEditable MediaWiki references list node.
*
* @class
* @extends ve.ce.LeafNode
* @mixins ve.ce.FocusableNode
*
* @constructor
* @param {ve.dm.MWReferencesListNode} model Model to observe
* @param {Object} [config] Configuration options
*/
ve.ce.MWReferencesListNode = function VeCeMWReferencesListNode() {
// Parent constructor
ve.ce.MWReferencesListNode.super.apply( this, arguments );
// Mixin constructors
ve.ce.FocusableNode.call( this );
// Properties
this.internalList = null;
this.listNode = null;
this.modified = false;
// DOM changes
this.$element.addClass( 've-ce-mwReferencesListNode' );
this.$reflist = $( '<ol>' ).addClass( 'mw-references references' );
this.$originalRefList = null;
this.$refmsg = $( '<p>' )
.addClass( 've-ce-mwReferencesListNode-muted' );
// Events
this.getModel().connect( this, { attributeChange: 'onAttributeChange' } );
this.updateDebounced = ve.debounce( this.update.bind( this ) );
// Initialization
this.updateDebounced();
};
/* Inheritance */
OO.inheritClass( ve.ce.MWReferencesListNode, ve.ce.LeafNode );
OO.mixinClass( ve.ce.MWReferencesListNode, ve.ce.FocusableNode );
/* Static Properties */
ve.ce.MWReferencesListNode.static.name = 'mwReferencesList';
ve.ce.MWReferencesListNode.static.tagName = 'div';
ve.ce.MWReferencesListNode.static.primaryCommandName = 'referencesList';
/* Static Methods */
/**
* @inheritdoc
*/
ve.ce.MWReferencesListNode.static.getDescription = function ( model ) {
return model.getAttribute( 'refGroup' );
};
/* Methods */
/**
* Handle setup events.
*
* @method
*/
ve.ce.MWReferencesListNode.prototype.onSetup = function () {
this.internalList = this.getModel().getDocument().getInternalList();
this.listNode = this.internalList.getListNode();
this.internalList.connect( this, { update: 'onInternalListUpdate' } );
this.listNode.connect( this, { update: 'onListNodeUpdate' } );
// Parent method
ve.ce.MWReferencesListNode.super.prototype.onSetup.call( this );
};
/**
* Handle teardown events.
*
* @method
*/
ve.ce.MWReferencesListNode.prototype.onTeardown = function () {
// Parent method
ve.ce.MWReferencesListNode.super.prototype.onTeardown.call( this );
if ( !this.listNode ) {
return;
}
this.internalList.disconnect( this, { update: 'onInternalListUpdate' } );
this.listNode.disconnect( this, { update: 'onListNodeUpdate' } );
this.internalList = null;
this.listNode = null;
};
/**
* Handle the updating of the InternalList object.
*
* This will occur after a document transaction.
*
* @method
* @param {string[]} groupsChanged A list of groups which have changed in this transaction
*/
ve.ce.MWReferencesListNode.prototype.onInternalListUpdate = function ( groupsChanged ) {
// Only update if this group has been changed
if ( groupsChanged.indexOf( this.getModel().getAttribute( 'listGroup' ) ) !== -1 ) {
this.modified = true;
this.updateDebounced();
}
};
/**
* Rerender when the 'listGroup' attribute changes in the model.
*
* @param {string} key Attribute key
* @param {string} from Old value
* @param {string} to New value
*/
ve.ce.MWReferencesListNode.prototype.onAttributeChange = function ( key ) {
switch ( key ) {
case 'listGroup':
this.updateDebounced();
this.modified = true;
break;
case 'isResponsive':
this.updateClasses();
break;
}
};
/**
* Handle the updating of the InternalListNode.
*
* This will occur after changes to any InternalItemNode.
*
* @method
*/
ve.ce.MWReferencesListNode.prototype.onListNodeUpdate = function () {
// When the list node updates we're not sure which list group the item
// belonged to so we always update
// TODO: Only re-render the reference which has been edited
this.updateDebounced();
};
/**
* Update the references list.
*/
ve.ce.MWReferencesListNode.prototype.update = function () {
var i, iLen, index, firstNode, key, keyedNodes, modelNode, refPreview,
$li, internalList, refGroup, listGroup, nodes,
model = this.getModel();
// Check the node hasn't been destroyed, as this method is debounced.
if ( !model ) {
return;
}
internalList = model.getDocument().internalList;
refGroup = model.getAttribute( 'refGroup' );
listGroup = model.getAttribute( 'listGroup' );
nodes = internalList.getNodeGroup( listGroup );
// Just use Parsoid-provided DOM for first rendering
// NB: Technically this.modified could be reset to false if this
// node is re-attached, but that is an unlikely edge case.
if ( !this.modified && model.getElement().originalDomElementsHash ) {
this.$originalRefList = $( model.getStore().value(
model.getElement().originalDomElementsHash
) );
this.$element.append( this.$originalRefList );
return;
}
if ( this.$originalRefList ) {
this.$originalRefList.remove();
this.$originalRefList = null;
}
this.$reflist.detach().empty();
this.$refmsg.detach();
if ( refGroup !== '' ) {
this.$reflist.attr( 'data-mw-group', refGroup );
} else {
this.$reflist.removeAttr( 'data-mw-group' );
}
if ( !nodes || !nodes.indexOrder.length ) {
if ( refGroup !== '' ) {
this.$refmsg.text( ve.msg( 'cite-ve-referenceslist-isempty', refGroup ) );
} else {
this.$refmsg.text( ve.msg( 'cite-ve-referenceslist-isempty-default' ) );
}
this.$element.append( this.$refmsg );
} else {
for ( i = 0, iLen = nodes.indexOrder.length; i < iLen; i++ ) {
index = nodes.indexOrder[ i ];
firstNode = nodes.firstNodes[ index ];
key = internalList.keys[ index ];
keyedNodes = nodes.keyedNodes[ key ];
keyedNodes = keyedNodes.filter( function ( node ) {
// Exclude placeholder references
if ( node.getAttribute( 'placeholder' ) ) {
return false;
}
// Exclude references defined inside the references list node
do {
node = node.parent;
if ( node instanceof ve.dm.MWReferencesListNode ) {
return false;
}
} while ( node );
return true;
} );
if ( !keyedNodes.length ) {
continue;
}
$li = $( '<li>' )
.append( this.renderBacklinks( keyedNodes, refGroup ) );
// Generate reference HTML from first item in key
modelNode = internalList.getItemNode( firstNode.getAttribute( 'listIndex' ) );
if ( modelNode && modelNode.length ) {
refPreview = new ve.ui.MWPreviewElement( modelNode, { useView: true } );
$li.append(
$( '<span>' )
.addClass( 'reference-text' )
.append( refPreview.$element )
);
} else {
$li.append(
$( '<span>' )
.addClass( 've-ce-mwReferencesListNode-muted' )
.text( ve.msg( 'cite-ve-referenceslist-missingref-in-list' ) )
);
}
this.$reflist.append( $li );
}
this.updateClasses();
this.$element.append( this.$reflist );
}
};
/**
* Update ref list classes.
*
* Currently used to set responsive layout
*/
ve.ce.MWReferencesListNode.prototype.updateClasses = function () {
var isResponsive = this.getModel().getAttribute( 'isResponsive' );
this.$element
.toggleClass( 'mw-references-wrap', isResponsive )
.toggleClass( 'mw-references-columns', isResponsive && this.$reflist.children().length > 10 );
};
/**
* Build markers for backlinks
*
* @param {ve.dm.Node[]} keyedNodes A list of ref nodes linked to a reference list item
* @param {string} refGroup Reference group name
* @return {jQuery} Element containing backlinks
*/
ve.ce.MWReferencesListNode.prototype.renderBacklinks = function ( keyedNodes, refGroup ) {
var j, jLen, $link, $refSpan;
if ( keyedNodes.length > 1 ) {
// named reference with multiple usages
$refSpan = $( '<span>' ).attr( 'rel', 'mw:referencedBy' );
for ( j = 0, jLen = keyedNodes.length; j < jLen; j++ ) {
$link = $( '<a>' ).append(
$( '<span>' ).addClass( 'mw-linkback-text' )
.text( ( j + 1 ) + ' ' )
);
if ( refGroup !== '' ) {
$link.attr( 'data-mw-group', refGroup );
}
$refSpan.append( $link );
}
return $refSpan;
} else {
// solo reference
$link = $( '<a>' ).attr( 'rel', 'mw:referencedBy' ).append(
$( '<span>' ).addClass( 'mw-linkback-text' )
.text( '↑ ' )
);
if ( refGroup !== '' ) {
$link.attr( 'data-mw-group', refGroup );
}
return $link;
}
};
/* Registration */
ve.ce.nodeFactory.register( ve.ce.MWReferencesListNode );