/*global define */
define([
"jquery",
"underscore",
"backbone",
"views/AltHeaderView",
"views/NavbarView",
"views/FooterView",
"views/SignInView",
"text!templates/alert.html",
"text!templates/appHead.html",
"text!templates/jsonld.txt",
"text!templates/app.html",
"text!templates/loading.html",
], function (
$,
_,
Backbone,
AltHeaderView,
NavbarView,
FooterView,
SignInView,
AlertTemplate,
AppHeadTemplate,
JsonLDTemplate,
AppTemplate,
LoadingTemplate
) {
"use strict";
var app = app || {};
/**
* @class AppView
* @classdesc The top-level view of the UI that contains and coordinates all other views of the UI
* @classcategory Views
*/
var AppView = Backbone.View.extend(
/** @lends AppView.prototype */ {
// Instead of generating a new element, bind to the existing skeleton of
// the App already present in the HTML.
el: "#metacatui-app",
//Templates
template: _.template(AppTemplate),
alertTemplate: _.template(AlertTemplate),
appHeadTemplate: _.template(AppHeadTemplate),
jsonLDTemplate: _.template(JsonLDTemplate),
loadingTemplate: _.template(LoadingTemplate),
events: {
click: "closePopovers",
"click .btn.direct-search": "routeToMetadata",
"keypress input.direct-search": "routeToMetadataOnEnter",
"click .toggle-slide": "toggleSlide",
"click input.copy": "higlightInput",
"focus input.copy": "higlightInput",
"click textarea.copy": "higlightInput",
"focus textarea.copy": "higlightInput",
"click .open-chat": "openChatWithMessage",
"click .login.redirect": "sendToLogin",
"focus .jump-width-input": "widenInput",
"focusout .jump-width-input": "narrowInput",
"click .temporary-message .close": "hideTemporaryMessage",
},
initialize: function () {
//Check for the LDAP sign in error message
if (
window.location.search.indexOf(
"error=Unable%20to%20authenticate%20LDAP%20user"
) > -1
) {
window.location =
window.location.origin +
window.location.pathname +
"#signinldaperror";
}
//Is there a logged-in user?
MetacatUI.appUserModel.checkStatus();
//Change the document title when the app changes the MetacatUI.appModel title at any time
this.listenTo(MetacatUI.appModel, "change:title", this.changeTitle);
this.listenTo(MetacatUI.appModel, "change:description", this.changeDescription);
this.checkIncompatibility();
},
/**
* The JS query selector for the element inside the AppView that contains the main view contents. When a new view is routed to
* and displayed via {@link AppView#showView}, the view will be inserted into this element.
* @type {string}
* @default "#Content"
* @since 2.22.0
*/
contentSelector: "#Content",
/**
* Gets the Element in this AppView via the {@link AppView#contentSelector}
* @returns {Element}
*/
getContentEl: function () {
return this.el.querySelector(this.contentSelector);
},
/**
* Change the web document's title
*/
changeTitle: function () {
document.title = MetacatUI.appModel.get("title");
},
/**
* Change the web document's description
* @since 2.25.0
*/
changeDescription: function () {
$("meta[name=description]").attr(
"content",
MetacatUI.appModel.get("description")
);
},
/** Render the main view and/or re-render subviews. Delegate rendering
and event handling to sub views.
---
If there is no AppView element on the page, don't render the application.
---
If there is no AppView element on the page, this function will exit without rendering anything.
For instance, this can occur when the AppView is loaded during unit tests.
See {@link AppView#el} to check which element is required for rendering. By default,
it is set to the element with the `metacatui-app` id (check docs for the most up-to-date info).
----
This step is usually unnecessary for Backbone Views since they should only render elements inside of
their own `el` anyway. But the APpView is different since it renders the overall structure of MetacatUI.
*/
render: function () {
//If there is no AppView element on the page, don't render the application.
if (!this.el) {
console.error(
"Not rendering the UI of the app since the AppView HTML element (AppView.el) does not exist on the page. Make sure you have the AppView element included in index.html"
);
return;
}
// set up the head - make sure to prepend, otherwise the CSS may be out of order!
$("head")
.append(
this.appHeadTemplate({
theme: MetacatUI.theme
})
)
//Add the JSON-LD to the head element
.append(
$(document.createElement("script"))
.attr("type", "application/ld+json")
.attr("id", "jsonld")
.html(this.jsonLDTemplate())
);
// set up the body
this.$el.append(this.template());
/**
* @name MetacatUI.navbarView
* @type NavbarView
* @description The view that displays a navigation menu on every MetacatUI page and controls the navigation between pages in MetacatUI.
*/
MetacatUI.navbarView = new NavbarView();
MetacatUI.navbarView.setElement($("#Navbar")).render();
/**
* @name MetacatUI.altHeaderView
* @type AltHeaderView
* @description The view that displays a header on every MetacatUI view that uses the "AltHeader" header type.
* This header is usually for decorative / aesthetic purposes only.
*/
MetacatUI.altHeaderView = new AltHeaderView();
MetacatUI.altHeaderView.setElement($("#HeaderContainer")).render();
/**
* @name MetacatUI.footerView
* @type FooterView
* @description The view that displays the main footer of the MetacatUI page.
* It has informational and navigational links in it and is displayed on every page, except for views that hide it for full-screen display.
*/
MetacatUI.footerView = new FooterView();
MetacatUI.footerView.setElement($("#Footer")).render();
this.showTemporaryMessage();
//Load the Slaask chat widget if it is enabled in this theme
if (MetacatUI.appModel.get("slaaskKey") && window._slaask)
_slaask.init(MetacatUI.appModel.get("slaaskKey"));
this.listenForActivity();
this.listenForTimeout();
this.initializeWidgets();
return this;
},
// the currently rendered view
currentView: null,
// Our view switcher for the whole app
showView: function (view, viewOptions) {
if (!this.el) {
console.error(
"Not rendering the UI of the app since the AppView HTML element (AppView.el) does not exist on the page. Make sure you have the AppView element included in index.html"
);
return;
}
//reference to appView
var thisAppViewRef = this;
// Change the background image if there is one
MetacatUI.navbarView.changeBackground();
// close the current view
if (this.currentView) {
//If the current view has a function to confirm closing of the view, call it
if (typeof this.currentView.canClose == "function") {
//If the user or view confirmed that the view shouldn't be closed, then don't navigate to the next route
if (!this.currentView.canClose()) {
//Get a confirmation message from the view, or use a default one
if (
typeof this.currentView.getConfirmCloseMessage == "function"
) {
var confirmMessage = this.currentView.getConfirmCloseMessage();
} else {
var confirmMessage = "Leave this page?";
}
//Show a confirm alert to the user and wait for their response
var leave = confirm(confirmMessage);
//If they clicked Cancel, then don't navigate to the next route
if (!leave) {
MetacatUI.uiRouter.undoLastRoute();
return;
}
}
}
// need reference to the old/current view for the callback method
var oldView = this.currentView;
this.currentView.$el.fadeOut("slow", function () {
// clean up old view
if (oldView.onClose) oldView.onClose();
//If the view to show is not the same as the main content element, then put it inside the content element.
if (view.el !== thisAppViewRef.getContentEl()) {
thisAppViewRef.getContentEl().replaceChildren(view.el);
$(thisAppViewRef.getContentEl()).show();
}
view.$el.fadeIn("slow", function () {
// render the new view
view.render(viewOptions);
// after fade in, do postRender()
if (view.postRender) view.postRender();
// force scroll to top if no custom scrolling is implemented
else thisAppViewRef.scrollToTop();
});
});
} else {
//If the view to show is not the same as the main content element, then put it inside the content element.
if (view.el !== this.getContentEl()) {
this.getContentEl().replaceChildren(view.el);
}
// just show the view without transition
view.render(viewOptions);
if (view.postRender) view.postRender();
// force scroll to top if no custom scrolling is implemented
else thisAppViewRef.scrollToTop();
}
// track the current view
this.currentView = view;
MetacatUI.analytics?.trackPageView();
this.trigger("appRenderComplete");
},
routeToMetadata: function (e) {
e.preventDefault();
//Get the value from the input element
var form = $(e.target).attr("form") || null,
val = this.$("#" + form)
.find("input[type=text]")
.val();
//Remove the text from the input
this.$("#" + form)
.find("input[type=text]")
.val("");
if (!val) return false;
MetacatUI.uiRouter.navigate("view/" + val, { trigger: true });
},
routeToMetadataOnEnter: function (e) {
//If the user pressed a key inside a text input, we only want to proceed if it was the Enter key
if (e.type == "keypress" && e.keycode != 13) return;
else this.routeToMetadata(e);
},
sendToLogin: function (e) {
if (e) e.preventDefault();
var url = $(e.target).attr("href");
url = url.substring(0, url.indexOf("target=") + 7);
url += window.location.href;
window.location.href = url;
},
resetSearch: function () {
// Clear the search and map model to start a fresh search
MetacatUI.appSearchModel.clear();
MetacatUI.appSearchModel.set(MetacatUI.appSearchModel.defaults());
MetacatUI.mapModel.clear();
MetacatUI.mapModel.set(MetacatUI.mapModel.defaults());
//Clear the search history
MetacatUI.appModel.set("searchHistory", new Array());
MetacatUI.uiRouter.navigate("data", { trigger: true });
},
closePopovers: function (e) {
if (this.currentView && this.currentView.closePopovers)
this.currentView.closePopovers(e);
},
toggleSlide: function (e) {
if (e) e.preventDefault();
else return false;
var clickedOn = $(e.target),
toggleElId =
clickedOn.attr("data-slide-el") ||
clickedOn.parents("[data-slide-el]").attr("data-slide-el"),
toggleEl = $("#" + toggleElId);
toggleEl.slideToggle("fast", function () {
//Toggle the display of the link if it has the right class
if (clickedOn.is(".toggle-display-on-slide")) {
clickedOn.siblings(".toggle-display-on-slide").toggle();
clickedOn.toggle();
}
});
},
/**
* Displays the given message to the user in a Bootstrap "alert" style.
* @param {object} options A literal object of options for the alert message.
* @property {string|Element} options.message A message string or HTML Element to display
* @property {string} [options.classes] A string of HTML classes to set on the alert
* @property {string|Element} [options.container] The container to show the alert in
* @property {boolean} [options.replaceContents] If true, the alert will replace the contents of the container element.
* If false, the alert will be prepended to the container element.
* @property {boolean|number} [options.delay] Set to true or specify a number of milliseconds to display the alert temporarily
* @property {boolean} [options.remove] If true, the user will be able to remove the alert with a "close" icon.
* @property {boolean} [options.includeEmail] If true, the alert will include a link to the {@link AppConfig#emailContact}
* @property {string} [options.emailBody] Specify an email body to use in the email link.
* @returns {Element} The alert element
*/
showAlert: function () {
if (arguments.length > 1) {
var options = {
message: arguments[0],
classes: arguments[1],
container: arguments[2],
delay: arguments[3],
};
if (typeof arguments[4] == "object") {
options = _.extend(options, arguments[4]);
}
} else {
var options = arguments[0];
}
if (typeof options != "object" || !options) {
return;
}
if (!options.classes) options.classes = "alert-success";
if (!options.container || !$(options.container).length)
options.container = this.$el;
//Remove any alerts that are already in this container
if ($(options.container).children(".alert-container").length > 0)
$(options.container).children(".alert-container").remove();
//Allow messages to be HTML or strings
if (typeof options.message != "string")
options.message = $(document.createElement("div"))
.append($(options.message))
.html();
var emailOptions = "";
//Check for more options
if (options.emailBody) emailOptions += "?body=" + options.emailBody;
var alert = $.parseHTML(
this.alertTemplate({
msg: options.message,
classes: options.classes,
emailOptions: emailOptions,
remove: options.remove || false,
includeEmail: options.includeEmail,
}).trim()
);
if (options.delay) {
$(alert).hide();
if (options.replaceContents) {
$(options.container).html(alert);
} else {
$(options.container).prepend(alert);
}
$(alert)
.show()
.delay(typeof options.delay == "number" ? options.delay : 3000)
.fadeOut();
} else {
if (options.replaceContents) {
$(options.container).html(alert);
} else {
$(options.container).prepend(alert);
}
}
return alert;
},
/**
* Previous to MetacatUI 2.14.0, the {@link AppView#showAlert} function allowed up to five parameters
* to customize the alert message. As of 2.14.0, the function has condensed these options into
* a single literal object. See the docs for {@link AppView#showAlert}. The old signature of five
* parameters may soon be deprecated completely, but is still supported.
* @deprecated
* @param {string|Element} msg
* @param {string} [classes]
* @param {string|Element} [container]
* @param {boolean} [delay]
* @param {object} [options]
* @param {boolean} [options.includeEmail] If true, the alert will include a link to the {@link AppConfig#emailContact}
* @param {string} [options.emailBody]
* @param {boolean} [options.remove]
* @param {boolean} [options.replaceContents]
*/
showAlert_deprecated: function (
msg,
classes,
container,
delay,
options
) {},
/**
* Listens to the focus event on the window to detect when a user switches back to this browser tab from somewhere else
* When a user checks back, we want to check for log-in status
*/
listenForActivity: function () {
MetacatUI.appUserModel.on("change:loggedIn", function () {
if (!MetacatUI.appUserModel.get("loggedIn")) return;
//When the user re-focuses back on the window
$(window).focus(function () {
//If the user has logged out in the meantime, then exit
if (!MetacatUI.appUserModel.get("loggedIn")) return;
//If the expiration date of the token has passed, then allow the user to sign back in
if (MetacatUI.appUserModel.get("expires") <= new Date()) {
MetacatUI.appView.showTimeoutSignIn();
}
});
});
},
/**
* Will determine the length of time until the user's current token expires,
* and will set a window timeout for that length of time. When the timeout
* is triggered, the sign in modal window will be displayed so that the user
* can sign in again (which happens in AppView.showTimeoutSignIn())
*/
listenForTimeout: function () {
//Only proceed if the user is logged in
if (!MetacatUI.appUserModel.get("checked")) {
//When the user logged back in, listen again for the next timeout
this.listenToOnce(
MetacatUI.appUserModel,
"change:checked",
function () {
//If the user is logged in, then listen call this function again
if (
MetacatUI.appUserModel.get("checked") &&
MetacatUI.appUserModel.get("loggedIn")
)
this.listenForTimeout();
}
);
return;
} else if (!MetacatUI.appUserModel.get("loggedIn")) {
//When the user logged back in, listen again for the next timeout
this.listenToOnce(
MetacatUI.appUserModel,
"change:loggedIn",
function () {
//If the user is logged in, then listen call this function again
if (
MetacatUI.appUserModel.get("checked") &&
MetacatUI.appUserModel.get("loggedIn")
)
this.listenForTimeout();
}
);
return;
}
var view = this,
expires = MetacatUI.appUserModel.get("expires"),
timeLeft = expires - new Date();
//If there is no time left until expiration, then show the sign in view now
if (timeLeft < 0) {
this.showTimeoutSignIn();
}
//Otherwise, set a timeout for a expiration time, then show the Sign In View
else {
var timeoutId = setTimeout(function () {
view.showTimeoutSignIn.call(view);
}, timeLeft);
//Save the timeout id in case we want to destroy the timeout later
MetacatUI.appUserModel.set("timeoutId", timeoutId);
}
},
/**
* If the user's auth token has expired, a new SignInView model window is
* displayed so the user can sign back in. A listener is set on the appUserModel
* so that when they do successfully sign back in, we set another timeout listener
* via AppView.listenForTimeout()
*/
showTimeoutSignIn: function () {
if (MetacatUI.appUserModel.get("expires") <= new Date()) {
MetacatUI.appUserModel.set("loggedIn", false);
var signInView = new SignInView({
inPlace: true,
closeButtons: false,
topMessage:
"Your session has timed out. Click Sign In to open a " +
"new window to sign in again. Make sure your browser settings allow pop-ups.",
});
var signInForm = signInView.render().el;
if (this.subviews && Array.isArray(this.subviews))
this.subviews.push(signInView);
else this.subviews = [signInView];
$("body").append(signInForm);
$(signInForm).modal();
//When the user logged back in, listen again for the next timeout
this.listenToOnce(
MetacatUI.appUserModel,
"change:checked",
function () {
if (
MetacatUI.appUserModel.get("checked") &&
MetacatUI.appUserModel.get("loggedIn")
)
this.listenForTimeout();
}
);
}
},
openChatWithMessage: function () {
if (!_slaask) return;
$("#slaask-input").val(MetacatUI.appModel.get("defaultSupportMessage"));
$("#slaask-button").trigger("click");
},
initializeWidgets: function () {
// Autocomplete widget extension to provide description tooltips.
$.widget("app.hoverAutocomplete", $.ui.autocomplete, {
// Set the content attribute as the "item.desc" value.
// This becomes the tooltip content.
_renderItem: function (ul, item) {
// if we have a label, use it for the title
var title = item.value;
if (item.label) {
title = item.label;
}
// if we have a description, use it for the content
var content = item.value;
if (item.desc) {
content = item.desc;
if (item.desc != item.value) {
content += " (" + item.value + ")";
}
}
var element = this._super(ul, item)
.attr("data-title", title)
.attr("data-content", content);
element.popover({
placement: "right",
trigger: "hover",
container: "body",
});
return element;
},
});
},
/**
* Checks if the user's browser is an outdated version that won't work with
* MetacatUI well, and displays a warning message to the user..
* The user agent is checked against the `unsupportedBrowsers` list in the AppModel.
*/
checkIncompatibility: function () {
//Check if this browser is incompatible with this app. i.e. It is an old browser version
var isUnsupportedBrowser = _.some(
MetacatUI.appModel.get("unsupportedBrowsers"),
function (browserRegEx) {
var matches = navigator.userAgent.match(browserRegEx);
return matches && matches.length > 0;
}
);
if (!isUnsupportedBrowser) {
return;
} else {
//Show a warning message to the user about their browser.
this.showAlert(
"Your web browser is out of date. Update your browser for more security, " +
"speed and the best experience on this site.",
"alert-warning",
this.$el,
false,
{ remove: true }
);
this.$el
.children(".alert-container")
.addClass("important-app-message");
}
},
/**
* Shows a temporary message at the top of the view
*/
showTemporaryMessage: function () {
try {
//Is there a temporary message to display throughout the app?
if (MetacatUI.appModel.get("temporaryMessage")) {
var startTime = MetacatUI.appModel.get("temporaryMessageStartTime"),
endTime = MetacatUI.appModel.get("temporaryMessageEndTime"),
today = new Date(),
isDisplayed = false;
//Find cases where we should display the message
//If there is a date range and today is in the range
if (startTime && endTime && today > startTime && today < endTime) {
isDisplayed = true;
}
//If there's just a start time and today is after it
else if (startTime && !endTime && today > startTime) {
isDisplayed = true;
}
//If there's just an end time and today is before it
else if (!startTime && endTime && today < endTime) {
isDisplayed = true;
}
//If there's no start or end time
else if (!startTime && !endTime) {
isDisplayed = true;
}
if (isDisplayed) {
require(["text!templates/alert.html"], function (alertTemplate) {
//Get classes for the message
var classes =
MetacatUI.appModel.get("temporaryMessageClasses") || "";
classes += " temporary-message";
var container =
MetacatUI.appModel.get("temporaryMessageContainer") ||
"#Navbar";
//If the message exists already, return
if ($(container + " .temporary-message").length) {
return;
}
//Insert the message using the Alert template
$(container).prepend(
_.template(alertTemplate)({
classes: classes,
msg: MetacatUI.appModel.get("temporaryMessage"),
includeEmail: MetacatUI.appModel.get(
"temporaryMessageIncludeEmail"
),
remove: true,
})
);
//Add a class to the body in case we need to adjust other elements on the page
$("body").addClass("has-temporary-message");
});
}
}
} catch (e) {
console.error("Couldn't display the temporary message: ", e);
}
},
/**
* Hides the temporary message
*/
hideTemporaryMessage: function () {
try {
this.$(".temporary-message").remove();
$("body").removeClass("has-temporary-message");
} catch (e) {
console.error("Couldn't hide the temporary message: ", e);
}
},
/********************** Utilities ********************************/
// Various utility functions to use across the app //
/************ Function to add commas to large numbers ************/
commaSeparateNumber: function (val) {
if (!val) return 0;
if (val < 1) return Math.round(val * 100) / 100;
while (/(\d+)(\d{3})/.test(val.toString())) {
val = val.toString().replace(/(\d+)(\d{3})/, "$1" + "," + "$2");
}
return val;
},
numberAbbreviator: function (number, decimalPlaces) {
if (number === 0) {
return 0;
}
decimalPlaces = Math.pow(10, decimalPlaces);
var abbreviations = ["K", "M", "B", "T"];
// Go through the array backwards, so we do the largest first
for (var i = abbreviations.length - 1; i >= 0; i--) {
// Convert array index to "1000", "1000000", etc
var size = Math.pow(10, (i + 1) * 3);
// If the number is bigger or equal do the abbreviation
if (size <= number) {
// Here, we multiply by decimalPlaces, round, and then divide by decimalPlaces.
// This gives us nice rounding to a particular decimal place.
number =
Math.round((number * decimalPlaces) / size) / decimalPlaces;
// Handle special case where we round up to the next abbreviation
if (number == 1000 && i < abbreviations.length - 1) {
number = 1;
i++;
}
// Add the letter for the abbreviation
number += abbreviations[i];
break;
}
}
return number;
},
higlightInput: function (e) {
if (!e) return;
e.preventDefault();
e.target.setSelectionRange(0, 9999);
},
widenInput: function (e) {
$(e.target).css("width", "200px");
},
narrowInput: function (e) {
$(e.target).delay(500).animate({ width: "60px" });
},
// scroll to top of page
scrollToTop: function () {
$("body,html")
.stop(true, true) //stop first for it to work in FF
.animate({ scrollTop: 0 }, "slow");
return false;
},
scrollTo: function (pageElement, offsetTop) {
//Find the header height if it is a fixed element
var headerOffset =
this.$("#Header").css("position") == "fixed"
? this.$("#Header").outerHeight()
: 0;
var navOffset =
this.$("#Navbar").css("position") == "fixed"
? this.$("#Navbar").outerHeight()
: 0;
var totalOffset = headerOffset + navOffset;
$("body,html")
.stop(true, true) //stop first for it to work in FF
.animate(
{ scrollTop: $(pageElement).offset().top - 40 - totalOffset },
1000
);
return false;
},
}
);
return AppView;
});