Restore drag-and-drop Quick Copy

chrome/content/zotero/xpcom/itemTreeView.js

@@ -2532,8 +2532,6 @@ Zotero.ItemTreeView.prototype.onDragStart = function (event) {
 	}
 	
 	// Get Quick Copy format for current URL
-// TODO: Fix this
-/** Currently broken
 	var url = this._ownerDocument.defaultView.content && this._ownerDocument.defaultView.content.location ?
 				this._ownerDocument.defaultView.content.location.href : null;
 	var format = Zotero.QuickCopy.getFormatFromURL(url);
@@ -2572,7 +2570,6 @@ Zotero.ItemTreeView.prototype.onDragStart = function (event) {
 		Zotero.debug(e);
 		Components.utils.reportError(e + " with '" + format.id + "'");
 	}
-*/
 };
 
 

chrome/content/zotero/xpcom/quickCopy.js

@@ -27,9 +27,18 @@
 Zotero.QuickCopy = new function() {
 	var _siteSettings;
 	var _formattedNames;
+	var _initialized = false;
 	
 	this.init = Zotero.Promise.coroutine(function* () {
 		yield this.loadSiteSettings();
+		
+		// Load code for selected export translator ahead of time
+		// (in the background, because it requires translator initialization)
+		setTimeout(_loadOutputFormat, 5000);
+		if (!_initialized) {
+			Zotero.Prefs.registerObserver("export.quickCopy.setting", () => _loadOutputFormat());
+			_initialized = true;
+		}
 	});
 	
 	
@@ -405,6 +414,22 @@ Zotero.QuickCopy = new function() {
 	};
 	
 	
+	/**
+	 * If an export translator is the selected output format, load its code (which must be done
+	 * asynchronously) ahead of time, since drag-and-drop requires synchronous operation
+	 */
+	var _loadOutputFormat = Zotero.Promise.coroutine(function* () {
+		var format = Zotero.Prefs.get("export.quickCopy.setting");
+		format = Zotero.QuickCopy.unserializeSetting(format);
+		if (format.mode == 'export') {
+			yield Zotero.Translators.init();
+			let translator = Zotero.Translators.get(format.id);
+			translator.cacheCode = true;
+			yield translator.getCode();
+		}
+	});
+	
+	
 	var _loadFormattedNames = Zotero.Promise.coroutine(function* () {
 		var t = new Date;
 		Zotero.debug("Loading formatted names for Quick Copy");

chrome/content/zotero/xpcom/translation/translate.js

@@ -1245,15 +1245,22 @@ Zotero.Translate.Base.prototype = {
 		this.setHandler("done", doneHandler);
 		this.setHandler("error", errorHandler);
 		
-		if(typeof this.translator[0] === "object") {
-			// already have a translator object, so use it
-			this._loadTranslator(this.translator[0]).then(function() { me._translateTranslatorLoaded() });
-		} else {
 		// need to get translator first
-			let translator = Zotero.Translators.get(this.translator[0]);
-			this.translator[0] = translator;
-			this._loadTranslator(translator).then(function() { me._translateTranslatorLoaded() });
+		if (typeof this.translator[0] !== "object") {
+			this.translator[0] = Zotero.Translators.get(this.translator[0]);
 		}
+		
+		var loadPromise = this._loadTranslator(this.translator[0]);
+		if (this.noWait) {
+			if (!loadPromise.isResolved()) {
+				return Zotero.Promise.reject(new Error("Load promise is not resolved in noWait mode"));
+			}
+			this._translateTranslatorLoaded();
+		}
+		else {
+			loadPromise.then(() => this._translateTranslatorLoaded());
+		}
+			
 		return deferred.promise;
 	},
 	
@@ -1633,7 +1640,7 @@ Zotero.Translate.Base.prototype = {
 	 * @param {Zotero.Translator} translator
 	 * @return {Boolean} Whether the translator could be successfully loaded
 	 */
-	"_loadTranslator":function(translator) {
+	"_loadTranslator": Zotero.Promise.method(function (translator) {
 		var sandboxLocation = this._getSandboxLocation();
 		if(!this._sandboxLocation || sandboxLocation !== this._sandboxLocation) {
 			this._sandboxLocation = sandboxLocation;
@@ -1646,19 +1653,42 @@ Zotero.Translate.Base.prototype = {
 		this._aborted = false;
 		this.saveQueue = [];
 		
-		var me = this;
-		return translator.getCode().then(function(code) {
+		var parse = function(code) {
 			Zotero.debug("Translate: Parsing code for " + translator.label + " "
 				+ "(" + translator.translatorID + ", " + translator.lastUpdated + ")", 4);
-			me._sandboxManager.eval("var exports = {}, ZOTERO_TRANSLATOR_INFO = "+code,
-				["detect"+me._entryFunctionSuffix, "do"+me._entryFunctionSuffix, "exports",
-					"ZOTERO_TRANSLATOR_INFO"],
-				(translator.file ? translator.file.path : translator.label));
-			me._translatorInfo = me._sandboxManager.sandbox.ZOTERO_TRANSLATOR_INFO;
-		}).catch(function(e) {
-			me.complete(false, e);
-		});
-	},
+			this._sandboxManager.eval(
+				"var exports = {}, ZOTERO_TRANSLATOR_INFO = " + code,
+				[
+					"detect" + this._entryFunctionSuffix,
+					"do" + this._entryFunctionSuffix,
+					"exports",
+					"ZOTERO_TRANSLATOR_INFO"
+				],
+				(translator.file ? translator.file.path : translator.label)
+			);
+			this._translatorInfo = this._sandboxManager.sandbox.ZOTERO_TRANSLATOR_INFO;
+		}.bind(this);
+		
+		if (this.noWait) {
+			try {
+				let codePromise = translator.getCode();
+				if (!codePromise.isResolved()) {
+					throw new Error("Code promise is not resolved in noWait mode");
+				}
+				parse(codePromise.value());
+			}
+			catch (e) {
+				this.complete(false, e);
+			}
+		}
+		else {
+			return translator.getCode()
+			.then(parse)
+			.catch(function(e) {
+				this.complete(false, e);
+			}.bind(this));
+		}
+	}),
 	
 	/**
 	 * Generates a sandbox for scraping/scraper detection

test/tests/quickCopyTest.js

@@ -33,4 +33,28 @@ describe("Zotero.QuickCopy", function() {
 			assert.deepEqual(Zotero.QuickCopy.getFormatFromURL('chrome://zotero/content/tab.xul'), quickCopyPref);
 		})
 	})
+	
+	describe("#getContentFromItems()", function () {
+		it("should generate BibTeX", function* () {
+			var item = yield createDataObject('item');
+			var content = "";
+			var worked = false;
+			
+			var format = 'export=9cb70025-a888-4a29-a210-93ec52da40d4'; // BibTeX
+			Zotero.Prefs.set('export.quickCopy.setting', format);
+			// The translator code is loaded automatically on pref change, but let's not wait for it
+			yield Zotero.QuickCopy.init();
+			
+			Zotero.QuickCopy.getContentFromItems(
+				[item],
+				format,
+				(obj, w) => {
+					content = obj.string;
+					worked = w;
+				}
+			);
+			assert.isTrue(worked);
+			assert.isTrue(content.trim().startsWith('@'));
+		});
+	});
 })