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+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Unit tests for the PanelMultiView module.
+ */
+
+const PANELS_COUNT = 2;
+let gPanelAnchors = [];
+let gPanels = [];
+let gPanelMultiViews = [];
+
+const PANELVIEWS_COUNT = 4;
+let gPanelViews = [];
+let gPanelViewLabels = [];
+
+const EVENT_TYPES = [
+ "popupshown",
+ "popuphidden",
+ "PanelMultiViewHidden",
+ "ViewShowing",
+ "ViewShown",
+ "ViewHiding",
+];
+
+/**
+ * Checks that the element is displayed, including the state of the popup where
+ * the element is located. This can trigger a synchronous reflow if necessary,
+ * because even though the code under test is designed to avoid synchronous
+ * reflows, it can raise completion events while a layout flush is still needed.
+ *
+ * In production code, event handlers for ViewShown have to wait for a flush if
+ * they need to read style or layout information, like other code normally does.
+ */
+function is_visible(element) {
+ let win = element.ownerGlobal;
+ let style = win.getComputedStyle(element);
+ if (style.display == "none") {
+ return false;
+ }
+ if (style.visibility != "visible") {
+ return false;
+ }
+ if (win.XULPopupElement.isInstance(element) && element.state != "open") {
+ return false;
+ }
+
+ // Hiding a parent element will hide all its children
+ if (element.parentNode != element.ownerDocument) {
+ return is_visible(element.parentNode);
+ }
+
+ return true;
+}
+
+/**
+ * Checks whether the label in the specified view is visible.
+ */
+function assertLabelVisible(viewIndex, expectedVisible) {
+ Assert.equal(
+ is_visible(gPanelViewLabels[viewIndex]),
+ expectedVisible,
+ `Visibility of label in view ${viewIndex}`
+ );
+}
+
+/**
+ * Opens the specified view as the main view in the specified panel.
+ */
+async function openPopup(panelIndex, viewIndex) {
+ gPanelMultiViews[panelIndex].setAttribute(
+ "mainViewId",
+ gPanelViews[viewIndex].id
+ );
+
+ let promiseShown = BrowserTestUtils.waitForEvent(
+ gPanelViews[viewIndex],
+ "ViewShown"
+ );
+ PanelMultiView.openPopup(
+ gPanels[panelIndex],
+ gPanelAnchors[panelIndex],
+ "bottomright topright"
+ );
+ await promiseShown;
+
+ Assert.ok(PanelView.forNode(gPanelViews[viewIndex]).active);
+ assertLabelVisible(viewIndex, true);
+}
+
+/**
+ * Closes the specified panel.
+ */
+async function hidePopup(panelIndex) {
+ gPanelMultiViews[panelIndex].setAttribute(
+ "mainViewId",
+ gPanelViews[panelIndex].id
+ );
+
+ let promiseHidden = BrowserTestUtils.waitForEvent(
+ gPanels[panelIndex],
+ "popuphidden"
+ );
+ PanelMultiView.hidePopup(gPanels[panelIndex]);
+ await promiseHidden;
+}
+
+/**
+ * Opens the specified subview in the specified panel.
+ */
+async function showSubView(panelIndex, viewIndex) {
+ let promiseShown = BrowserTestUtils.waitForEvent(
+ gPanelViews[viewIndex],
+ "ViewShown"
+ );
+ gPanelMultiViews[panelIndex].showSubView(gPanelViews[viewIndex]);
+ await promiseShown;
+
+ Assert.ok(PanelView.forNode(gPanelViews[viewIndex]).active);
+ assertLabelVisible(viewIndex, true);
+}
+
+/**
+ * Navigates backwards to the specified view, which is displayed as a result.
+ */
+async function goBack(panelIndex, viewIndex) {
+ let promiseShown = BrowserTestUtils.waitForEvent(
+ gPanelViews[viewIndex],
+ "ViewShown"
+ );
+ gPanelMultiViews[panelIndex].goBack();
+ await promiseShown;
+
+ Assert.ok(PanelView.forNode(gPanelViews[viewIndex]).active);
+ assertLabelVisible(viewIndex, true);
+}
+
+/**
+ * Records the specified events on an element into the specified array. An
+ * optional callback can be used to respond to events and trigger nested events.
+ */
+function recordEvents(
+ element,
+ eventTypes,
+ recordArray,
+ eventCallback = () => {}
+) {
+ let nestedEvents = [];
+ element.recorders = eventTypes.map(eventType => {
+ let recorder = {
+ eventType,
+ listener(event) {
+ let eventString =
+ nestedEvents.join("") + `${event.originalTarget.id}: ${event.type}`;
+ info(`Event on ${eventString}`);
+ recordArray.push(eventString);
+ // Any synchronous event triggered from within the given callback will
+ // include information about the current event.
+ nestedEvents.unshift(`${eventString} > `);
+ eventCallback(event);
+ nestedEvents.shift();
+ },
+ };
+ element.addEventListener(recorder.eventType, recorder.listener);
+ return recorder;
+ });
+}
+
+/**
+ * Stops recording events on an element.
+ */
+function stopRecordingEvents(element) {
+ for (let recorder of element.recorders) {
+ element.removeEventListener(recorder.eventType, recorder.listener);
+ }
+ delete element.recorders;
+}
+
+/**
+ * Sets up the elements in the browser window that will be used by all the other
+ * regression tests. Since the panel and view elements can live anywhere in the
+ * document, they are simply added to the same toolbar as the panel anchors.
+ *
+ * <toolbar id="nav-bar">
+ * <toolbarbutton/> -> gPanelAnchors[panelIndex]
+ * <panel> -> gPanels[panelIndex]
+ * <panelmultiview/> -> gPanelMultiViews[panelIndex]
+ * </panel>
+ * <panelview> -> gPanelViews[viewIndex]
+ * <label/> -> gPanelViewLabels[viewIndex]
+ * </panelview>
+ * </toolbar>
+ */
+add_task(async function test_setup() {
+ let navBar = document.getElementById("nav-bar");
+
+ for (let i = 0; i < PANELS_COUNT; i++) {
+ gPanelAnchors[i] = document.createXULElement("toolbarbutton");
+ gPanelAnchors[i].classList.add(
+ "toolbarbutton-1",
+ "chromeclass-toolbar-additional"
+ );
+ navBar.appendChild(gPanelAnchors[i]);
+
+ gPanels[i] = document.createXULElement("panel");
+ gPanels[i].id = "panel-" + i;
+ gPanels[i].setAttribute("type", "arrow");
+ gPanels[i].setAttribute("photon", true);
+ navBar.appendChild(gPanels[i]);
+
+ gPanelMultiViews[i] = document.createXULElement("panelmultiview");
+ gPanelMultiViews[i].id = "panelmultiview-" + i;
+ gPanels[i].appendChild(gPanelMultiViews[i]);
+ }
+
+ for (let i = 0; i < PANELVIEWS_COUNT; i++) {
+ gPanelViews[i] = document.createXULElement("panelview");
+ gPanelViews[i].id = "panelview-" + i;
+ navBar.appendChild(gPanelViews[i]);
+
+ gPanelViewLabels[i] = document.createXULElement("label");
+ gPanelViewLabels[i].setAttribute("value", "PanelView " + i);
+ gPanelViews[i].appendChild(gPanelViewLabels[i]);
+ }
+
+ registerCleanupFunction(() => {
+ [...gPanelAnchors, ...gPanels, ...gPanelViews].forEach(e => e.remove());
+ });
+});
+
+/**
+ * Shows and hides all views in a panel with this static structure:
+ *
+ * - Panel 0
+ * - View 0
+ * - View 1
+ * - View 3
+ * - View 2
+ */
+add_task(async function test_simple() {
+ // Show main view 0.
+ await openPopup(0, 0);
+
+ // Show and hide subview 1.
+ await showSubView(0, 1);
+ assertLabelVisible(0, false);
+ await goBack(0, 0);
+ assertLabelVisible(1, false);
+
+ // Show subview 3.
+ await showSubView(0, 3);
+ assertLabelVisible(0, false);
+
+ // Show and hide subview 2.
+ await showSubView(0, 2);
+ assertLabelVisible(3, false);
+ await goBack(0, 3);
+ assertLabelVisible(2, false);
+
+ // Hide subview 3.
+ await goBack(0, 0);
+ assertLabelVisible(3, false);
+
+ // Hide main view 0.
+ await hidePopup(0);
+ assertLabelVisible(0, false);
+});
+
+/**
+ * Tests the event sequence in a panel with this static structure:
+ *
+ * - Panel 0
+ * - View 0
+ * - View 1
+ * - View 3
+ * - View 2
+ */
+add_task(async function test_simple_event_sequence() {
+ let recordArray = [];
+ recordEvents(gPanels[0], EVENT_TYPES, recordArray);
+
+ await openPopup(0, 0);
+ await showSubView(0, 1);
+ await goBack(0, 0);
+ await showSubView(0, 3);
+ await showSubView(0, 2);
+ await goBack(0, 3);
+ await goBack(0, 0);
+ await hidePopup(0);
+
+ stopRecordingEvents(gPanels[0]);
+
+ Assert.deepEqual(recordArray, [
+ "panelview-0: ViewShowing",
+ "panelview-0: ViewShown",
+ "panel-0: popupshown",
+ "panelview-1: ViewShowing",
+ "panelview-1: ViewShown",
+ "panelview-1: ViewHiding",
+ "panelview-0: ViewShown",
+ "panelview-3: ViewShowing",
+ "panelview-3: ViewShown",
+ "panelview-2: ViewShowing",
+ "panelview-2: ViewShown",
+ "panelview-2: ViewHiding",
+ "panelview-3: ViewShown",
+ "panelview-3: ViewHiding",
+ "panelview-0: ViewShown",
+ "panelview-0: ViewHiding",
+ "panelmultiview-0: PanelMultiViewHidden",
+ "panel-0: popuphidden",
+ ]);
+});
+
+/**
+ * Tests that further navigation is suppressed until the new view is shown.
+ */
+add_task(async function test_navigation_suppression() {
+ await openPopup(0, 0);
+
+ // Test re-entering the "showSubView" method.
+ let promiseShown = BrowserTestUtils.waitForEvent(gPanelViews[1], "ViewShown");
+ gPanelMultiViews[0].showSubView(gPanelViews[1]);
+ Assert.ok(
+ !PanelView.forNode(gPanelViews[0]).active,
+ "The previous view should become inactive synchronously."
+ );
+
+ // The following call will have no effect.
+ gPanelMultiViews[0].showSubView(gPanelViews[2]);
+ await promiseShown;
+
+ // Test re-entering the "goBack" method.
+ promiseShown = BrowserTestUtils.waitForEvent(gPanelViews[0], "ViewShown");
+ gPanelMultiViews[0].goBack();
+ Assert.ok(
+ !PanelView.forNode(gPanelViews[1]).active,
+ "The previous view should become inactive synchronously."
+ );
+
+ // The following call will have no effect.
+ gPanelMultiViews[0].goBack();
+ await promiseShown;
+
+ // Main view 0 should be displayed.
+ assertLabelVisible(0, true);
+
+ await hidePopup(0);
+});
+
+/**
+ * Tests reusing views that are already open in another panel. In this test, the
+ * structure of the first panel will change dynamically:
+ *
+ * - Panel 0
+ * - View 0
+ * - View 1
+ * - Panel 1
+ * - View 1
+ * - View 2
+ * - Panel 0
+ * - View 1
+ * - View 0
+ */
+add_task(async function test_switch_event_sequence() {
+ let recordArray = [];
+ recordEvents(gPanels[0], EVENT_TYPES, recordArray);
+ recordEvents(gPanels[1], EVENT_TYPES, recordArray);
+
+ // Show panel 0.
+ await openPopup(0, 0);
+ await showSubView(0, 1);
+
+ // Show panel 1 with the view that is already open and visible in panel 0.
+ // This will close panel 0 automatically.
+ await openPopup(1, 1);
+ await showSubView(1, 2);
+
+ // Show panel 0 with a view that is already open but invisible in panel 1.
+ // This will close panel 1 automatically.
+ await openPopup(0, 1);
+ await showSubView(0, 0);
+
+ // Hide panel 0.
+ await hidePopup(0);
+
+ stopRecordingEvents(gPanels[0]);
+ stopRecordingEvents(gPanels[1]);
+
+ Assert.deepEqual(recordArray, [
+ "panelview-0: ViewShowing",
+ "panelview-0: ViewShown",
+ "panel-0: popupshown",
+ "panelview-1: ViewShowing",
+ "panelview-1: ViewShown",
+ "panelview-1: ViewHiding",
+ "panelview-0: ViewHiding",
+ "panelmultiview-0: PanelMultiViewHidden",
+ "panel-0: popuphidden",
+ "panelview-1: ViewShowing",
+ "panel-1: popupshown",
+ "panelview-1: ViewShown",
+ "panelview-2: ViewShowing",
+ "panelview-2: ViewShown",
+ "panel-1: popuphidden",
+ "panelview-2: ViewHiding",
+ "panelview-1: ViewHiding",
+ "panelmultiview-1: PanelMultiViewHidden",
+ "panelview-1: ViewShowing",
+ "panelview-1: ViewShown",
+ "panel-0: popupshown",
+ "panelview-0: ViewShowing",
+ "panelview-0: ViewShown",
+ "panelview-0: ViewHiding",
+ "panelview-1: ViewHiding",
+ "panelmultiview-0: PanelMultiViewHidden",
+ "panel-0: popuphidden",
+ ]);
+});
+
+/**
+ * Tests the event sequence when opening the main view is canceled.
+ */
+add_task(async function test_cancel_mainview_event_sequence() {
+ let recordArray = [];
+ recordEvents(gPanels[0], EVENT_TYPES, recordArray, event => {
+ if (event.type == "ViewShowing") {
+ event.preventDefault();
+ }
+ });
+
+ gPanelMultiViews[0].setAttribute("mainViewId", gPanelViews[0].id);
+
+ let promiseHidden = BrowserTestUtils.waitForEvent(gPanels[0], "popuphidden");
+ PanelMultiView.openPopup(
+ gPanels[0],
+ gPanelAnchors[0],
+ "bottomright topright"
+ );
+ await promiseHidden;
+
+ stopRecordingEvents(gPanels[0]);
+
+ Assert.deepEqual(recordArray, [
+ "panelview-0: ViewShowing",
+ "panelview-0: ViewHiding",
+ "panelmultiview-0: PanelMultiViewHidden",
+ "panelmultiview-0: popuphidden",
+ ]);
+});
+
+/**
+ * Tests the event sequence when opening a subview is canceled.
+ */
+add_task(async function test_cancel_subview_event_sequence() {
+ let recordArray = [];
+ recordEvents(gPanels[0], EVENT_TYPES, recordArray, event => {
+ if (
+ event.type == "ViewShowing" &&
+ event.originalTarget.id == gPanelViews[1].id
+ ) {
+ event.preventDefault();
+ }
+ });
+
+ await openPopup(0, 0);
+
+ let promiseHiding = BrowserTestUtils.waitForEvent(
+ gPanelViews[1],
+ "ViewHiding"
+ );
+ gPanelMultiViews[0].showSubView(gPanelViews[1]);
+ await promiseHiding;
+
+ // Only the subview should have received the hidden event at this point.
+ Assert.deepEqual(recordArray, [
+ "panelview-0: ViewShowing",
+ "panelview-0: ViewShown",
+ "panel-0: popupshown",
+ "panelview-1: ViewShowing",
+ "panelview-1: ViewHiding",
+ ]);
+ recordArray.length = 0;
+
+ await hidePopup(0);
+
+ stopRecordingEvents(gPanels[0]);
+
+ Assert.deepEqual(recordArray, [
+ "panelview-0: ViewHiding",
+ "panelmultiview-0: PanelMultiViewHidden",
+ "panel-0: popuphidden",
+ ]);
+});
+
+/**
+ * Tests the event sequence when closing the panel while opening the main view.
+ */
+add_task(async function test_close_while_showing_mainview_event_sequence() {
+ let recordArray = [];
+ recordEvents(gPanels[0], EVENT_TYPES, recordArray, event => {
+ if (event.type == "ViewShowing") {
+ PanelMultiView.hidePopup(gPanels[0]);
+ }
+ });
+
+ gPanelMultiViews[0].setAttribute("mainViewId", gPanelViews[0].id);
+
+ let promiseHidden = BrowserTestUtils.waitForEvent(gPanels[0], "popuphidden");
+ let promiseHiding = BrowserTestUtils.waitForEvent(
+ gPanelViews[0],
+ "ViewHiding"
+ );
+ PanelMultiView.openPopup(
+ gPanels[0],
+ gPanelAnchors[0],
+ "bottomright topright"
+ );
+ await promiseHiding;
+ await promiseHidden;
+
+ stopRecordingEvents(gPanels[0]);
+
+ Assert.deepEqual(recordArray, [
+ "panelview-0: ViewShowing",
+ "panelview-0: ViewShowing > panelview-0: ViewHiding",
+ "panelview-0: ViewShowing > panelmultiview-0: PanelMultiViewHidden",
+ "panelview-0: ViewShowing > panelmultiview-0: popuphidden",
+ ]);
+});
+
+/**
+ * Tests the event sequence when closing the panel while opening a subview.
+ */
+add_task(async function test_close_while_showing_subview_event_sequence() {
+ let recordArray = [];
+ recordEvents(gPanels[0], EVENT_TYPES, recordArray, event => {
+ if (
+ event.type == "ViewShowing" &&
+ event.originalTarget.id == gPanelViews[1].id
+ ) {
+ PanelMultiView.hidePopup(gPanels[0]);
+ }
+ });
+
+ await openPopup(0, 0);
+
+ let promiseHidden = BrowserTestUtils.waitForEvent(gPanels[0], "popuphidden");
+ gPanelMultiViews[0].showSubView(gPanelViews[1]);
+ await promiseHidden;
+
+ stopRecordingEvents(gPanels[0]);
+
+ Assert.deepEqual(recordArray, [
+ "panelview-0: ViewShowing",
+ "panelview-0: ViewShown",
+ "panel-0: popupshown",
+ "panelview-1: ViewShowing",
+ "panelview-1: ViewShowing > panelview-1: ViewHiding",
+ "panelview-1: ViewShowing > panelview-0: ViewHiding",
+ "panelview-1: ViewShowing > panelmultiview-0: PanelMultiViewHidden",
+ "panelview-1: ViewShowing > panel-0: popuphidden",
+ ]);
+});
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