fix focus test breakage after zotero@6859614 (#3977)

- edits to zoteroPaneTest.js focus tests to expect the updated focus
sequence: selected tab -> tabs menu -> sync button -> collectionTree
toolbar -> collectionTree -> tags selector -> itemTree toolbar
- updated tags selector keydown handling to explicitly handle all
tab/shift-tab events using moveFocus. It is more readable and explicit
focus handling for all components is required for programmic tab/shiftTab
events dispatched in tests to actually move focus
Fixes: #3975

chrome/content/zotero/components/search.jsx

@@ -92,6 +92,7 @@ class Search extends React.PureComponent {
 					onChange={this.handleChange}
 					onKeyDown={this.handleKeyDown}
 					value={this.state.immediateValue}
+					className="search-input"
 					{...pick(this.props, p => p.startsWith('data-') || p.startsWith('aria-'))}
 				/>
 				{this.state.immediateValue !== ''

chrome/content/zotero/zoteroPane.js

@@ -414,7 +414,7 @@ var ZoteroPane = new function()
 						}
 						// If tag selector is collapsed, go to "New item" button, otherwise
 						// default to focusing on tag selector
-						return false;
+						return tagContainer.querySelector(".tag-selector-list");
 					},
 					Escape: clearCollectionSearch
 				}
@@ -432,30 +432,37 @@ var ZoteroPane = new function()
 		});
 
 		tagSelector.addEventListener("keydown", (e) => {
-			// Tab from the scrollable tag list or Shift-Tab from the input field focuses the first
+			let actionsMap = {
-			// non-disabled tag. If there are none, the tags are skipped
+				'search-input': {
-			if ((e.target.classList.contains("tag-selector-list") && e.key == "Tab" && !e.shiftKey)
+					Tab: () => tagSelector.querySelector('.tag-selector-actions'),
-				|| e.target.tagName == "input" && e.key == "Tab" && e.shiftKey) {
+					ShiftTab: () => {
-				let firstNonDisabledTag = document.querySelector('.tag-selector-item:not(.disabled)');
+						let firstNonDisabledTag = tagSelector.querySelector('.tag-selector-item:not(.disabled)');
 						if (firstNonDisabledTag) {
-					firstNonDisabledTag.focus();
+							return firstNonDisabledTag;
 						}
-				else if (e.target.classList.contains("tag-selector-list")) {
+						return document.getElementById("collection-tree");
-					tagSelector.querySelector("input").focus();
+					},
+				},
+				'tag-selector-item': {
+					Tab: () => tagSelector.querySelector(".search-input"),
+					ShiftTab: () => tagSelector.querySelector(".tag-selector-list"),
+				},
+				'tag-selector-actions': {
+					Tab: () => document.getElementById('zotero-tb-add'),
+					ShiftTab: () => tagSelector.querySelector(".search-input")
+				},
+				'tag-selector-list': {
+					Tab: () => {
+						let firstNonDisabledTag = tagSelector.querySelector('.tag-selector-item:not(.disabled)');
+						if (firstNonDisabledTag) {
+							return firstNonDisabledTag;
 						}
-				else {
+						return tagSelector.querySelector(".search-input");
-					tagSelector.querySelector(".tag-selector-list").focus();
+					},
-				}
+					ShiftTab: () => document.getElementById("collection-tree"),
-				
-				e.preventDefault();
-				e.stopPropagation();
-			}
-			// Special treatment for tag selector button because it has no id
-			if (e.target.tagName == "button" && e.key == "Tab" && !e.shiftKey) {
-				document.getElementById('zotero-tb-add').focus();
-				e.preventDefault();
-				e.stopPropagation();
 				}
+			};
+			moveFocus(actionsMap, e);
 		});
 	}
 

test/tests/zoteroPaneTest.js

@@ -1495,7 +1495,15 @@ describe("ZoteroPane", function() {
 			var collection = new Zotero.Collection;
 			collection.name = "Focus Test";
 			await collection.saveTx();
+			// Make sure there is a tag
+			var item = new Zotero.Item('newspaperArticle');
+			item.setCollections([collection.id]);
+			await item.setTags(["Tag"]);
+			await item.saveTx({
+				skipSelect: true
+			});
 			await waitForItemsLoad(win);
+			await zp.collectionsView.selectLibrary(userLibraryID);
 		});
 
 		var tab = new KeyboardEvent('keydown', {
@@ -1519,19 +1527,23 @@ describe("ZoteroPane", function() {
 			bubbles: true
 		});
 
-		// TEMP: https://github.com/zotero/zotero/issues/3975
+		// Focus sequence for Zotero Pane
-		it.skip("should shift-tab through the toolbar to item-tree", async function () {
-			let searchBox = doc.getElementById('zotero-tb-search-textbox');
-			searchBox.focus();
-
 		let sequence = [
 			"zotero-tb-search-dropmarker",
 			"zotero-tb-add",
+			"tag-selector-actions",
+			"search-input",
+			"tag-selector-item",
+			"tag-selector-list",
+			"collection-tree",
 			"zotero-collections-search",
 			"zotero-tb-collection-add",
 			"zotero-tb-sync",
 			"zotero-tb-tabs-menu"
 		];
+		it("should shift-tab across the zotero pane", async function () {
+			let searchBox = doc.getElementById('zotero-tb-search-textbox');
+			searchBox.focus();
 
 			for (let id of sequence) {
 				doc.activeElement.dispatchEvent(shiftTab);
@@ -1539,7 +1551,14 @@ describe("ZoteroPane", function() {
 				if (id === "zotero-collections-search") {
 					await Zotero.Promise.delay(250);
 				}
+				// Some elements don't have id, so use classes to verify they're focused
+				if (doc.activeElement.id) {
 					assert.equal(doc.activeElement.id, id);
+				}
+				else {
+					let clases = [...doc.activeElement.classList];
+					assert.include(clases, id);
+				}
 				// Wait for collection search to be hidden for subsequent tests
 				if (id === "zotero-tb-collection-add") {
 					await Zotero.Promise.delay(50);
@@ -1552,27 +1571,24 @@ describe("ZoteroPane", function() {
 			assert.equal(doc.activeElement.id, "item-tree-main-default");
 		});
 
-		// TEMP: https://github.com/zotero/zotero/issues/3975
+		it("should tab across the zotero pane", async function () {
-		it.skip("should tab through the toolbar to collection-tree", async function () {
 			win.Zotero_Tabs.moveFocus("current");
-			let sequence = [
+			sequence.reverse();
-				"zotero-tb-tabs-menu",
-				"zotero-tb-sync",
-				"zotero-tb-collection-add",
-				"zotero-collections-search",
-				"zotero-tb-add",
-				"zotero-tb-search-dropmarker",
-				'zotero-tb-search-textbox',
-				'collection-tree',
-			];
 			for (let id of sequence) {
 				doc.activeElement.dispatchEvent(tab);
 				// Wait for collection search to be revealed
 				if (id === "zotero-collections-search") {
 					await Zotero.Promise.delay(250);
 				}
+				// Some elements don't have id, so use classes to verify they're focused
+				if (doc.activeElement.id) {
 					assert.equal(doc.activeElement.id, id);
 				}
+				else {
+					let clases = [...doc.activeElement.classList];
+					assert.include(clases, id);
+				}
+			}
 		});
 
 		it("should navigate toolbarbuttons with arrows", async function () {