Add a prompt to import Mendeley DB if mendeley citation found in doc

chrome/content/zotero/import/importWizard.js

@@ -49,6 +49,10 @@ var Zotero_Import_Wizard = {
 				document.getElementById('create-collection-checkbox').removeAttribute('checked');
 			}
 		}
+		
+		if (args && args.pageID) {
+			this._wizard.goTo(args.pageID);
+		}
 
 		if (args && args.mendeleyCode && Zotero.Prefs.get("import.mendeleyUseOAuth")) {
 			this._mendeleyCode = args.mendeleyCode;

chrome/content/zotero/xpcom/integration.js

@@ -2632,11 +2632,42 @@ Zotero.Integration.URIMap.prototype.getZoteroItemForURIs = async function (uris)
 			replacer = await Zotero.Relations.getByPredicateAndObject(
 				'item', 'mendeleyDB:documentUUID', m[1]
 			);
-			if (replacer.length && !replacer[0].deleted) {
-				zoteroItem = replacer[0];
-				break;
+			if (replacer.length) {
+				if (!replacer[0].deleted) {
+					zoteroItem = replacer[0];
+					break;
+				}
 			}
-		}
+			// If not blocked by user having pressed skip in this session,
+			// or user having checked the checkbox to not be prompted about this,
+			// or user having imported their library with the new version of importer
+			else if (!(this.session.dontPromptForMendeley
+				|| Zotero.Prefs.get('integration.dontPromptMendeleyImport')
+				|| await Zotero.DB.valueQueryAsync("SELECT value FROM settings WHERE setting='mendeleyImport' AND key='version'")
+			)) {
+				// Prompt user to (re)import their mendeley database which might make us recognize
+				// these items
+				let checkbox = {};
+				let result = Zotero.Prompt.confirm({
+					title: Zotero.getString('integration.mendeleyImport.title'),
+					text: Zotero.getString('integration.mendeleyImport.description', [Zotero.appName]),
+					button0: Zotero.getString('integration.mendeleyImport.openImporter'),
+					button1: Zotero.getString('general.skip'),
+					checkLabel: Zotero.getString('general.dontAskAgain'),
+					checkbox
+				});
+				if (result === 0) {
+					setTimeout(() => Zotero.getMainWindow().Zotero_File_Interface.showImportWizard({ pageID: 'mendeley-online-explanation' }));
+					throw new Zotero.Exception.UserCancelled("Importing mendeley citations");
+				}
+				else {
+					this.session.dontPromptForMendeley = true;
+				}
+				if (checkbox.value) {
+					Zotero.Prefs.set('integration.dontPromptMendeleyImport', true);
+				}
+			}
+		};
 		
 	}
 	

chrome/locale/en-US/zotero/zotero.properties

@@ -74,6 +74,7 @@ general.tryLater                 = Try Later
 general.showDirectory = Show Directory
 general.showInLibrary = Show in Library
 general.continue = Continue
+general.skip	        = Skip
 general.copy			= Copy
 general.copyToClipboard = Copy to Clipboard
 general.cancel			= Cancel
@@ -990,6 +991,9 @@ integration.exportDocument.description1 = Zotero will convert citations in the d
 integration.exportDocument.description2 = You should make a backup of the document before proceeding.
 integration.importInstructions = The Zotero citations in this document have been converted to a format that can be safely transferred between word processors. Open this document in a supported word processor and press Refresh in the Zotero plugin to continue working with the citations.
 integration.upgradeTemplate = The %S plugin for %S is outdated. Reinstall the plugin from Preferences → Cite → Word Processors.
+integration.mendeleyImport.title          = Missing Mendeley Data
+integration.mendeleyImport.description    = %1$S detected that the document you are citing with contains Mendeley citations. %1$S will be able to manage these citations if you import your Mendeley database.
+integration.mendeleyImport.openImporter   = Open Mendeley Importer...
 
 styles.install.title				= Install Style
 styles.install.unexpectedError		= An unexpected error occurred while installing "%1$S"

components/zotero-service.js

@@ -53,6 +53,7 @@ const xpcomFilesAll = [
 	'mimeTypeHandler',
 	'pdfWorker/manager',
 	'ipc',
+	'prompt',
 	'profile',
 	'progressWindow',
 	'proxy',

defaults/preferences/zotero.js

@@ -137,6 +137,7 @@ pref("extensions.zotero.integration.autoRegenerate", -1);	// -1 = ask; 0 = no; 1
 pref("extensions.zotero.integration.useClassicAddCitationDialog", false);
 pref("extensions.zotero.integration.keepAddCitationDialogRaised", false);
 pref("extensions.zotero.integration.upgradeTemplateDelayedOn", 0);
+pref("extensions.zotero.integration.dontPromptMendeleyImport", false);
 
 // Connector settings
 pref("extensions.zotero.httpServer.enabled", false);	// TODO enabled for testing only