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| -rw-r--r-- | toolkit/content/widgets/notificationbox.js | 816 |
1 files changed, 816 insertions, 0 deletions
diff --git a/toolkit/content/widgets/notificationbox.js b/toolkit/content/widgets/notificationbox.js new file mode 100644 index 0000000000..5a323255f0 --- /dev/null +++ b/toolkit/content/widgets/notificationbox.js @@ -0,0 +1,816 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +// This is loaded into chrome windows with the subscript loader. If you need to +// define globals, wrap in a block to prevent leaking onto `window`. +{ + MozElements.NotificationBox = class NotificationBox { + /** + * Creates a new class to handle a notification box, but does not add any + * elements to the DOM until a notification has to be displayed. + * + * @param insertElementFn + * Called with the "notification-stack" element as an argument when the + * first notification has to be displayed. + */ + constructor(insertElementFn) { + this._insertElementFn = insertElementFn; + this._animating = false; + this.currentNotification = null; + } + + get stack() { + if (!this._stack) { + let stack = document.createXULElement("vbox"); + stack._notificationBox = this; + stack.className = "notificationbox-stack"; + stack.addEventListener("transitionend", event => { + if ( + (event.target.localName == "notification" || + event.target.localName == "notification-message") && + event.propertyName == "margin-top" + ) { + this._finishAnimation(); + } + }); + this._stack = stack; + this._insertElementFn(stack); + } + return this._stack; + } + + get _allowAnimation() { + return window.matchMedia("(prefers-reduced-motion: no-preference)") + .matches; + } + + get allNotifications() { + // Don't create any DOM if no new notification has been added yet. + if (!this._stack) { + return []; + } + + var closedNotification = this._closedNotification; + var notifications = [ + ...this.stack.getElementsByTagName("notification"), + ...this.stack.getElementsByTagName("notification-message"), + ]; + return notifications.filter(n => n != closedNotification); + } + + getNotificationWithValue(aValue) { + var notifications = this.allNotifications; + for (var n = notifications.length - 1; n >= 0; n--) { + if (aValue == notifications[n].getAttribute("value")) { + return notifications[n]; + } + } + return null; + } + + /** + * Creates a <notification> element and shows it. The calling code can modify + * the element synchronously to add features to the notification. + * + * aType + * String identifier that can uniquely identify the type of the notification. + * aNotification + * Object that contains any of the following properties, where only the + * priority must be specified: + * priority + * One of the PRIORITY_ constants. These determine the appearance of + * the notification based on severity (using the "type" attribute), and + * only the notification with the highest priority is displayed. + * label + * The main message text (as string), or object (with l10n-id, l10n-args), + * or a DocumentFragment containing elements to + * add as children of the notification's main <description> element. + * eventCallback + * This may be called with the "removed", "dismissed" or "disconnected" + * parameter: + * removed - notification has been removed + * dismissed - user dismissed notification + * disconnected - notification removed in any way + * notificationIs + * Defines a Custom Element name to use as the "is" value on creation. + * This allows subclassing the created element. + * telemetry + * Specifies the telemetry key to use that triggers when the notification + * is shown, dismissed and an action taken. This telemetry is a keyed scalar with keys for: + * 'shown', 'dismissed' and 'action'. If a button specifies a separate key, + * then 'action' is replaced by values specific to each button. The value telemetryFilter + * can be used to filter out each type. + * telemetryFilter + * If assigned, then an array of the telemetry types to send telemetry for. If not set, + * then all telemetry is sent. + * aButtons + * Array of objects defining action buttons: + * { + * label: + * Label of the <button> element. + * accessKey: + * Access key character for the <button> element. + * "l10n-id" + * Localization id for the <button>, to be used instead of + * specifying a separate label and access key. + * callback: + * When the button is used, this is called with the arguments: + * 1. The <notification> element. + * 2. This button object definition. + * 3. The <button> element. + * 4. The "command" event. + * If the callback returns false, the notification is closed. + * link: + * A url to open when the button is clicked. The button is + * rendered like a link. The callback is called as well. + * supportPage: + * Used for a support page link. If no other properties are specified, + * defaults to a link with a 'Learn more' label. + * popup: + * If specified, the button will open the popup element with this + * ID, anchored to the button. This is alternative to "callback". + * telemetry: + * Specifies the key to add for the telemetry to trigger when the + * button is pressed. If not specified, then 'action' is used for + * a press on any button. Specify this only if you want to distinguish + * which button has been pressed in telemetry data. + * is: + * Defines a Custom Element name to use as the "is" value on + * button creation. + * } + * + * @return The <notification> element that is shown. + */ + appendNotification(aType, aNotification, aButtons) { + if ( + aNotification.priority < this.PRIORITY_SYSTEM || + aNotification.priority > this.PRIORITY_CRITICAL_HIGH + ) { + throw new Error( + "Invalid notification priority " + aNotification.priority + ); + } + + MozXULElement.insertFTLIfNeeded("toolkit/global/notification.ftl"); + + // Create the Custom Element and connect it to the document immediately. + var newitem; + if (!aNotification.notificationIs) { + if (!customElements.get("notification-message")) { + // There's some weird timing stuff when this element is created at + // script load time, we don't need it until now anyway so be lazy. + createNotificationMessageElement(); + } + newitem = document.createElement("notification-message"); + newitem.setAttribute("message-bar-type", "infobar"); + } else { + newitem = document.createXULElement( + "notification", + aNotification.notificationIs + ? { is: aNotification.notificationIs } + : {} + ); + } + + // Append or prepend notification, based on stack preference. + if (this.stack.hasAttribute("prepend-notifications")) { + this.stack.prepend(newitem); + } else { + this.stack.append(newitem); + } + + // Custom notification classes may not have the messageText property. + if (newitem.messageText) { + // Can't use instanceof in case this was created from a different document: + if ( + aNotification.label && + typeof aNotification.label == "object" && + aNotification.label.nodeType && + aNotification.label.nodeType == + aNotification.label.DOCUMENT_FRAGMENT_NODE + ) { + newitem.messageText.appendChild(aNotification.label); + } else if ( + aNotification.label && + typeof aNotification.label == "object" && + "l10n-id" in aNotification.label + ) { + let message = document.createElement("span"); + document.l10n.setAttributes( + message, + aNotification.label["l10n-id"], + aNotification.label["l10n-args"] + ); + newitem.messageText.appendChild(message); + } else { + newitem.messageText.textContent = aNotification.label; + } + } + newitem.setAttribute("value", aType); + + newitem.eventCallback = aNotification.eventCallback; + + if (aButtons) { + newitem.setButtons(aButtons); + } + + if (aNotification.telemetry) { + newitem.telemetry = aNotification.telemetry; + if (aNotification.telemetryFilter) { + newitem.telemetryFilter = aNotification.telemetryFilter; + } + } + + newitem.priority = aNotification.priority; + if (aNotification.priority == this.PRIORITY_SYSTEM) { + newitem.setAttribute("type", "system"); + } else if (aNotification.priority >= this.PRIORITY_CRITICAL_LOW) { + newitem.setAttribute("type", "critical"); + } else if (aNotification.priority <= this.PRIORITY_INFO_HIGH) { + newitem.setAttribute("type", "info"); + } else { + newitem.setAttribute("type", "warning"); + } + + // Animate the notification. + newitem.style.display = "block"; + newitem.style.position = "fixed"; + newitem.style.top = "100%"; + newitem.style.marginTop = "-15px"; + newitem.style.opacity = "0"; + this._showNotification(newitem, true); + + // Fire event for accessibility APIs + var event = document.createEvent("Events"); + event.initEvent("AlertActive", true, true); + newitem.dispatchEvent(event); + + // If the notification is not visible, don't call shown() on the + // new notification until it is visible. This will typically be + // a tabbrowser that does this when a tab is selected. + if (this.isShown) { + newitem.shown(); + } + + return newitem; + } + + removeNotification(aItem, aSkipAnimation) { + if (!aItem.parentNode) { + return; + } + this.currentNotification = aItem; + this.removeCurrentNotification(aSkipAnimation); + } + + _removeNotificationElement(aChild) { + let hadFocus = aChild.matches(":focus-within"); + + if (aChild.eventCallback) { + aChild.eventCallback("removed"); + } + aChild.remove(); + + // Make sure focus doesn't get lost (workaround for bug 570835). + if (hadFocus) { + Services.focus.moveFocus( + window, + this.stack, + Services.focus.MOVEFOCUS_FORWARD, + 0 + ); + } + } + + removeCurrentNotification(aSkipAnimation) { + this._showNotification(this.currentNotification, false, aSkipAnimation); + } + + removeAllNotifications(aImmediate) { + var notifications = this.allNotifications; + for (var n = notifications.length - 1; n >= 0; n--) { + if (aImmediate) { + this._removeNotificationElement(notifications[n]); + } else { + this.removeNotification(notifications[n]); + } + } + this.currentNotification = null; + + // Clean up any currently-animating notification; this is necessary + // if a notification was just opened and is still animating, but we + // want to close it *without* animating. This can even happen if + // animations get disabled (via prefers-reduced-motion) and this method + // is called immediately after an animated notification was displayed + // (although this case isn't very likely). + if (aImmediate || !this._allowAnimation) { + this._finishAnimation(); + } + } + + removeTransientNotifications() { + var notifications = this.allNotifications; + for (var n = notifications.length - 1; n >= 0; n--) { + var notification = notifications[n]; + if (notification.persistence) { + notification.persistence--; + } else if (Date.now() > notification.timeout) { + this.removeNotification(notification, true); + } + } + } + + shown() { + for (let notification of this.allNotifications) { + notification.shown(); + } + } + + get isShown() { + let stack = this.stack; + let parent = this.stack.parentNode; + if (parent.localName == "named-deck") { + return parent.selectedViewName == stack.getAttribute("name"); + } + + return true; + } + + _showNotification(aNotification, aSlideIn, aSkipAnimation) { + this._finishAnimation(); + + let { marginTop, marginBottom } = getComputedStyle(aNotification); + let baseHeight = aNotification.getBoundingClientRect().height; + var height = + baseHeight + parseInt(marginTop, 10) + parseInt(marginBottom, 10); + var skipAnimation = + aSkipAnimation || baseHeight == 0 || !this._allowAnimation; + aNotification.classList.toggle("animated", !skipAnimation); + + if (aSlideIn) { + this.currentNotification = aNotification; + aNotification.style.removeProperty("display"); + aNotification.style.removeProperty("position"); + aNotification.style.removeProperty("top"); + aNotification.style.removeProperty("margin-top"); + aNotification.style.removeProperty("opacity"); + + if (skipAnimation) { + return; + } + } else { + this._closedNotification = aNotification; + var notifications = this.allNotifications; + var idx = notifications.length - 1; + this.currentNotification = idx >= 0 ? notifications[idx] : null; + + if (skipAnimation) { + this._removeNotificationElement(this._closedNotification); + delete this._closedNotification; + return; + } + + aNotification.style.marginTop = -height + "px"; + aNotification.style.opacity = 0; + } + + this._animating = true; + } + + _finishAnimation() { + if (this._animating) { + this._animating = false; + if (this._closedNotification) { + this._removeNotificationElement(this._closedNotification); + delete this._closedNotification; + } + } + } + }; + + // These are defined on the instance prototype for backwards compatibility. + Object.assign(MozElements.NotificationBox.prototype, { + PRIORITY_SYSTEM: 0, + PRIORITY_INFO_LOW: 1, + PRIORITY_INFO_MEDIUM: 2, + PRIORITY_INFO_HIGH: 3, + PRIORITY_WARNING_LOW: 4, + PRIORITY_WARNING_MEDIUM: 5, + PRIORITY_WARNING_HIGH: 6, + PRIORITY_CRITICAL_LOW: 7, + PRIORITY_CRITICAL_MEDIUM: 8, + PRIORITY_CRITICAL_HIGH: 9, + }); + + MozElements.Notification = class Notification extends MozXULElement { + static get markup() { + return ` + <hbox class="messageDetails" align="center" flex="1" + oncommand="this.parentNode._doButtonCommand(event);"> + <image class="messageImage"/> + <description class="messageText" flex="1"/> + <spacer flex="1"/> + </hbox> + <toolbarbutton ondblclick="event.stopPropagation();" + class="messageCloseButton close-icon tabbable" + data-l10n-id="close-notification-message" + oncommand="this.parentNode.dismiss();"/> + `; + } + + constructor() { + super(); + this.persistence = 0; + this.priority = 0; + this.timeout = 0; + this.telemetry = null; + this._shown = false; + } + + connectedCallback() { + MozXULElement.insertFTLIfNeeded("toolkit/global/notification.ftl"); + this.appendChild(this.constructor.fragment); + + for (let [propertyName, selector] of [ + ["messageDetails", ".messageDetails"], + ["messageImage", ".messageImage"], + ["messageText", ".messageText"], + ["spacer", "spacer"], + ["buttonContainer", ".messageDetails"], + ["closeButton", ".messageCloseButton"], + ]) { + this[propertyName] = this.querySelector(selector); + } + } + + disconnectedCallback() { + if (this.eventCallback) { + this.eventCallback("disconnected"); + } + } + + setButtons(aButtons) { + for (let button of aButtons) { + let buttonElem; + + let link = button.link; + let localeId = button["l10n-id"]; + if (!link && button.supportPage) { + link = + Services.urlFormatter.formatURLPref("app.support.baseURL") + + button.supportPage; + if (!button.label && !localeId) { + localeId = "notification-learnmore-default-label"; + } + } + + if (link) { + buttonElem = document.createXULElement("label", { + is: "text-link", + }); + buttonElem.setAttribute("href", link); + buttonElem.classList.add("notification-link"); + buttonElem.onclick = (...args) => this._doButtonCommand(...args); + } else { + buttonElem = document.createXULElement( + "button", + button.is ? { is: button.is } : {} + ); + buttonElem.classList.add("notification-button"); + + if (button.primary) { + buttonElem.classList.add("primary"); + } + } + + if (localeId) { + buttonElem.setAttribute("data-l10n-id", localeId); + } else { + buttonElem.setAttribute(link ? "value" : "label", button.label); + if (typeof button.accessKey == "string") { + buttonElem.setAttribute("accesskey", button.accessKey); + } + } + + if (link) { + this.messageText.appendChild(buttonElem); + } else { + this.messageDetails.appendChild(buttonElem); + } + buttonElem.buttonInfo = button; + } + } + + get control() { + return this.closest(".notificationbox-stack")._notificationBox; + } + + /** + * Changes the text of an existing notification. If the notification was + * created with a custom fragment, it will be overwritten with plain text + * or a localized message. + * + * @param {string | { "l10n-id": string, "l10n-args"?: string }} value + */ + set label(value) { + if (value && typeof value == "object" && "l10n-id" in value) { + const message = document.createElement("span"); + document.l10n.setAttributes( + message, + value["l10n-id"], + value["l10n-args"] + ); + while (this.messageText.firstChild) { + this.messageText.firstChild.remove(); + } + this.messageText.appendChild(message); + } else { + this.messageText.textContent = value; + } + } + + /** + * This method should only be called when the user has manually closed the + * notification. If you want to programmatically close the notification, you + * should call close() instead. + */ + dismiss() { + this._doTelemetry("dismissed"); + + if (this.eventCallback) { + this.eventCallback("dismissed"); + } + this.close(); + } + + close() { + if (!this.parentNode) { + return; + } + this.control.removeNotification(this); + } + + // This will be called when the host (such as a tabbrowser) determines that + // the notification is made visible to the user. + shown() { + if (!this._shown) { + this._shown = true; + this._doTelemetry("shown"); + } + } + + _doTelemetry(type) { + if ( + this.telemetry && + (!this.telemetryFilter || this.telemetryFilter.includes(type)) + ) { + Services.telemetry.keyedScalarAdd(this.telemetry, type, 1); + } + } + + _doButtonCommand(event) { + if (!("buttonInfo" in event.target)) { + return; + } + + var button = event.target.buttonInfo; + this._doTelemetry(button.telemetry || "action"); + + if (button.popup) { + document + .getElementById(button.popup) + .openPopup( + event.originalTarget, + "after_start", + 0, + 0, + false, + false, + event + ); + event.stopPropagation(); + } else { + var callback = button.callback; + if (callback) { + var result = callback(this, button, event.target, event); + if (!result) { + this.close(); + } + event.stopPropagation(); + } + } + } + }; + + customElements.define("notification", MozElements.Notification); + + function createNotificationMessageElement() { + // Get a reference to MessageBarElement from a created element so the import + // gets handled automatically if needed. + class NotificationMessage extends document.createElement("message-bar") + .constructor { + constructor() { + super(); + this.persistence = 0; + this.priority = 0; + this.timeout = 0; + this.telemetry = null; + this._shown = false; + } + + connectedCallback() { + this.toggleAttribute("dismissable", true); + this.closeButton.classList.add("notification-close"); + + this.container = this.shadowRoot.querySelector(".container"); + this.container.classList.add("infobar"); + this.setAlertRole(); + + let messageContent = this.shadowRoot.querySelector(".content"); + messageContent.classList.add("notification-content"); + + // Remove the <slot>, API surface is `set label()` and `setButtons()`. + messageContent.textContent = ""; + + // A 'label' allows screen readers to detect the text of the alert. + this.messageText = document.createElement("label"); + this.messageText.classList.add("notification-message"); + this.buttonContainer = document.createElement("span"); + this.buttonContainer.classList.add("notification-button-container"); + + this.messageImage = this.shadowRoot.querySelector(".icon"); + + messageContent.append(this.messageText, this.buttonContainer); + this.shadowRoot.addEventListener("click", this); + this.shadowRoot.addEventListener("command", this); + } + + disconnectedCallback() { + if (this.eventCallback) { + this.eventCallback("disconnected"); + } + } + + _doTelemetry(type) { + if ( + this.telemetry && + (!this.telemetryFilter || this.telemetryFilter.includes(type)) + ) { + Services.telemetry.keyedScalarAdd(this.telemetry, type, 1); + } + } + + get control() { + return this.closest(".notificationbox-stack")._notificationBox; + } + + close() { + if (!this.parentNode) { + return; + } + this.control.removeNotification(this); + } + + // This will be called when the host (such as a tabbrowser) determines that + // the notification is made visible to the user. + shown() { + if (!this._shown) { + this._shown = true; + this._doTelemetry("shown"); + } + } + + setAlertRole() { + // Wait a little for this to render before setting the role for more + // consistent alerts to screen readers. + this.container.removeAttribute("role"); + window.requestAnimationFrame(() => { + window.requestAnimationFrame(() => { + this.container.setAttribute("role", "alert"); + }); + }); + } + + handleEvent(e) { + if (e.type == "click" && e.target.localName != "label") { + return; + } + + if ("buttonInfo" in e.target) { + let { buttonInfo } = e.target; + let { callback, popup } = buttonInfo; + + this._doTelemetry(buttonInfo.telemetry || "action"); + + if (popup) { + document + .getElementById(popup) + .openPopup( + e.originalTarget, + "after_start", + 0, + 0, + false, + false, + e + ); + e.stopPropagation(); + } else if (callback) { + if (!callback(this, buttonInfo, e.target, e)) { + this.close(); + } + e.stopPropagation(); + } + } + } + + /** + * Changes the text of an existing notification. If the notification was + * created with a custom fragment, it will be overwritten with plain text + * or a localized message. + * + * @param {string | { "l10n-id": string, "l10n-args"?: string }} value + */ + set label(value) { + if (value && typeof value == "object" && "l10n-id" in value) { + const message = document.createElement("span"); + document.l10n.setAttributes( + message, + value["l10n-id"], + value["l10n-args"] + ); + while (this.messageText.firstChild) { + this.messageText.firstChild.remove(); + } + this.messageText.appendChild(message); + } else { + this.messageText.textContent = value; + } + this.setAlertRole(); + } + + setButtons(buttons) { + this._buttons = buttons; + for (let button of buttons) { + let link = button.link || button.supportPage; + let localeId = button["l10n-id"]; + + let buttonElem; + if (button.hasOwnProperty("supportPage")) { + window.ensureCustomElements("moz-support-link"); + buttonElem = document.createElement("a", { + is: "moz-support-link", + }); + buttonElem.classList.add("notification-link"); + buttonElem.setAttribute("support-page", button.supportPage); + } else if (link) { + buttonElem = document.createXULElement("label", { + is: "text-link", + }); + buttonElem.setAttribute("href", link); + buttonElem.classList.add("notification-link", "text-link"); + } else { + buttonElem = document.createXULElement( + "button", + button.is ? { is: button.is } : {} + ); + buttonElem.classList.add("notification-button", "small-button"); + + if (button.primary) { + buttonElem.classList.add("primary"); + } + } + + if (localeId) { + document.l10n.setAttributes(buttonElem, localeId); + } else { + buttonElem.setAttribute(link ? "value" : "label", button.label); + if (typeof button.accessKey == "string") { + buttonElem.setAttribute("accesskey", button.accessKey); + } + } + + if (link) { + this.messageText.append(new Text(" "), buttonElem); + } else { + this.buttonContainer.appendChild(buttonElem); + } + buttonElem.buttonInfo = button; + } + } + + dismiss() { + this._doTelemetry("dismissed"); + + if (this.eventCallback) { + this.eventCallback("dismissed"); + } + super.dismiss(); + } + } + customElements.define("notification-message", NotificationMessage); + } +} |