Follow redirects in the link inspector API

Show redirect targets first, then any redirects to it
immediately after.

Change-Id: Ifde579410b4fbf42e0598e4b069963162333da55

VisualEditor.php

@@ -1148,6 +1148,7 @@ $wgResourceModules += array(
 		'messages' => array(
 			'visualeditor-annotationbutton-linknode-tooltip',
 			'visualeditor-linkinspector-description-new-page',
+			'visualeditor-linkinspector-description-redirect',
 			'visualeditor-linkinspector-illegal-title',
 			'visualeditor-linknodeinspector-add-label',
 			'visualeditor-linknodeinspector-title',

extension.json

@@ -1174,6 +1174,7 @@
 			"messages": [
 				"visualeditor-annotationbutton-linknode-tooltip",
 				"visualeditor-linkinspector-description-new-page",
+				"visualeditor-linkinspector-description-redirect",
 				"visualeditor-linkinspector-illegal-title",
 				"visualeditor-linknodeinspector-add-label",
 				"visualeditor-linknodeinspector-title"

modules/ve-mw/i18n/en.json

@@ -242,6 +242,7 @@
 	"visualeditor-formatdropdown-format-mw-heading6": "Sub-heading 4",
 	"visualeditor-languages-tool": "Languages",
 	"visualeditor-linkinspector-description-new-page": "Page does not exist yet",
+	"visualeditor-linkinspector-description-redirect": "redirect to $1",
 	"visualeditor-linkinspector-illegal-title": "Invalid page title",
 	"visualeditor-linknodeinspector-add-label": "Add label",
 	"visualeditor-linknodeinspector-title": "Simple link",

modules/ve-mw/i18n/qqq.json

@@ -251,6 +251,7 @@
 	"visualeditor-formatdropdown-format-mw-heading6": "Item in the MediaWiki formatting dropdown for a level 6 heading (sub-section)\n{{Related|Visualeditor-formatdropdown}}",
 	"visualeditor-languages-tool": "Tool for opening the languages links section of the meta dialog.\n{{Identical|Language}}",
 	"visualeditor-linkinspector-description-new-page": "Description label for a new page in the link inspector.",
+	"visualeditor-linkinspector-description-redirect": "Description label for a redirect in the link inspector.",
 	"visualeditor-linkinspector-illegal-title": "Warning that the entered text is not a valid page title.",
 	"visualeditor-linknodeinspector-add-label": "Label of button that converts an auto-numbered, external, labelless link into a labeled external link",
 	"visualeditor-linknodeinspector-title": "Title of inspector for editing auto-numbered, external, labelless links.\n\nSee also:\n* {{msg-mw|Visualeditor-annotationbutton-linknode-tooltip}}",

modules/ve-mw/ui/widgets/ve.ui.MWLinkTargetInputWidget.js

@@ -193,6 +193,7 @@ ve.ui.MWLinkTargetInputWidget.prototype.getLookupRequest = function () {
 					prop: 'info|pageprops|pageimages|pageterms',
 					pithumbsize: 80,
 					pilimit: 5,
+					redirects: '',
 					wbptterms: 'description',
 					ppprop: 'disambiguation'
 				} );
@@ -214,7 +215,7 @@ ve.ui.MWLinkTargetInputWidget.prototype.getLookupRequest = function () {
  * @param {Mixed} data Response from server
  */
 ve.ui.MWLinkTargetInputWidget.prototype.getLookupCacheDataFromResponse = function ( data ) {
-	return data.query && data.query.pages || {};
+	return data.query || {};
 };
 
 /**
@@ -241,22 +242,42 @@ ve.ui.MWLinkTargetInputWidget.prototype.onLookupInputChange = function () {
  * @returns {OO.ui.MenuOptionWidget[]} Menu items
  */
 ve.ui.MWLinkTargetInputWidget.prototype.getLookupMenuOptionsFromData = function ( data ) {
-	var i, len, index, pageExists, pageExistsExact, suggestionPage, linkData,
+	var i, len, index, pageExists, pageExistsExact, suggestionPage, linkData, redirect, redirects,
 		items = [],
 		suggestionPages = [],
 		titleObj = mw.Title.newFromText( this.value ),
+		redirectsTo = {},
 		links = {};
 
-	for ( index in data ) {
-		suggestionPage = data[index];
+	if ( data.redirects ) {
+		for ( i = 0, len = data.redirects.length; i < len; i++ ) {
+			redirect = data.redirects[i];
+			redirectsTo[redirect.to] = redirectsTo[redirect.to] || [];
+			redirectsTo[redirect.to].push( redirect.from );
+		}
+	}
+
+	for ( index in data.pages ) {
+		suggestionPage = data.pages[index];
 		links[suggestionPage.title] = {
 			missing: false,
-			redirect: suggestionPage.redirect !== undefined,
+			redirect: false,
 			disambiguation: ve.getProp( suggestionPage, 'pageprops', 'disambiguation' ) !== undefined,
 			imageUrl: ve.getProp( suggestionPage, 'thumbnail', 'source' ),
 			description: ve.getProp( suggestionPage, 'terms', 'description' )
 		};
 		suggestionPages.push( suggestionPage.title );
+
+		redirects = redirectsTo[suggestionPage.title] || [];
+		for ( i = 0, len = redirects.length; i < len; i++ ) {
+			links[redirects[i]] = {
+				missing: false,
+				redirect: true,
+				disambiguation: false,
+				description: ve.msg( 'visualeditor-linkinspector-description-redirect', suggestionPage.title )
+			};
+			suggestionPages.push( redirects[i] );
+		}
 	}
 
 	// If not found, run value through mw.Title to avoid treating a match as a