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Copyright 2010-2016 OCAD University Copyright 2012-2014 Raising the Floor - US Copyright 2014-2016 Raising the Floor - International Licensed under the Educational Community License (ECL), Version 2.0 or the New BSD license. You may not use this file except in compliance with one these Licenses. You may obtain a copy of the ECL 2.0 License and BSD License at https://github.com/fluid-project/infusion/raw/master/Infusion-LICENSE.txt */ /** This file contains functions which depend on the presence of a DOM document * and which depend on the contents of Fluid.js **/ var fluid_3_0_0 = fluid_3_0_0 || {}; (function ($, fluid) { "use strict"; fluid.defaults("fluid.viewComponent", { gradeNames: ["fluid.modelComponent"], initFunction: "fluid.initView", argumentMap: { container: 0, options: 1 }, members: { // Used to allow early access to DOM binder via IoC, but to also avoid triggering evaluation of selectors dom: "@expand:fluid.initDomBinder({that}, {that}.options.selectors)" } }); // unsupported, NON-API function fluid.dumpSelector = function (selectable) { return typeof (selectable) === "string" ? selectable : selectable.selector ? selectable.selector : ""; }; // unsupported, NON-API function // NOTE: this function represents a temporary strategy until we have more integrated IoC debugging. // It preserves the 1.3 and previous framework behaviour for the 1.x releases, but provides a more informative // diagnostic - in fact, it is perfectly acceptable for a component's creator to return no value and // the failure is really in assumptions in fluid.initLittleComponent. Revisit this issue for 2.0 fluid.diagnoseFailedView = function (componentName, that, options, args) { if (!that && fluid.hasGrade(options, "fluid.viewComponent")) { var container = fluid.wrap(args[1]); var message1 = "Instantiation of view component with type " + componentName + " failed, since "; Iif (!container) { fluid.fail(message1 + " container argument is empty"); } else Eif (container.length === 0) { fluid.fail(message1 + "selector \"", fluid.dumpSelector(args[1]), "\" did not match any markup in the document"); } else { fluid.fail(message1 + " component creator function did not return a value"); } } }; fluid.checkTryCatchParameter = function () { var location = window.location || { search: "", protocol: "file:" }; var GETparams = location.search.slice(1).split("&"); return fluid.find(GETparams, function (param) { Iif (param.indexOf("notrycatch") === 0) { return true; } }) === true; }; fluid.notrycatch = fluid.checkTryCatchParameter(); /** * Wraps an object in a jQuery if it isn't already one. This function is useful since * it ensures to wrap a null or otherwise falsy argument to itself, rather than the * often unhelpful jQuery default of returning the overall document node. * * @param {Object} obj - the object to wrap in a jQuery * @param {jQuery} [userJQuery] - the jQuery object to use for the wrapping, optional - use the current jQuery if absent * @return {jQuery} - The wrapped object. */ fluid.wrap = function (obj, userJQuery) { userJQuery = userJQuery || $; return ((!obj || obj.jquery) ? obj : userJQuery(obj)); }; /** * If obj is a jQuery, this function will return the first DOM element within it. Otherwise, the object will be returned unchanged. * * @param {jQuery} obj - The jQuery instance to unwrap into a pure DOM element. * @return {Object} - The unwrapped object. */ fluid.unwrap = function (obj) { return obj && obj.jquery ? obj[0] : obj; }; /** * Fetches a single container element and returns it as a jQuery. * * @param {String|jQuery|element} containerSpec - an id string, a single-element jQuery, or a DOM element specifying a unique container * @param {Boolean} fallible - <code>true</code> if an empty container is to be reported as a valid condition * @param {jQuery} [userJQuery] - the jQuery object to use for the wrapping, optional - use the current jQuery if absent * @return {jQuery} - A single-element jQuery container. */ fluid.container = function (containerSpec, fallible, userJQuery) { var selector = containerSpec.selector || containerSpec; Iif (userJQuery) { containerSpec = fluid.unwrap(containerSpec); } var container = fluid.wrap(containerSpec, userJQuery); if (fallible && (!container || container.length === 0)) { return null; } if (!container || !container.jquery || container.length !== 1) { if (typeof (containerSpec) !== "string") { containerSpec = container.selector; } var count = container.length !== undefined ? container.length : 0; fluid.fail((count > 1 ? "More than one (" + count + ") container elements were" : "No container element was") + " found for selector " + containerSpec); } if (!fluid.isDOMNode(container[0])) { fluid.fail("fluid.container was supplied a non-jQueryable element"); } // To address FLUID-5966, manually adding back the selector and context properties that were removed from jQuery v3.0. // ( see: https://jquery.com/upgrade-guide/3.0/#breaking-change-deprecated-context-and-selector-properties-removed ) // In most cases the "selector" property will already be restored through the DOM binder; // however, when a selector or pure jQuery element is supplied directly as a component's container, we need to add them // if it is possible to infer them. This feature is rarely used but is crucial for the prefs framework infrastructure // in Panels.js fluid.prefs.subPanel.resetDomBinder container.selector = selector; container.context = container.context || containerSpec.ownerDocument || document; return container; }; /** * Creates a new DOM Binder instance, used to locate elements in the DOM by name. * * @param {Object} container - the root element in which to locate named elements * @param {Object} selectors - a collection of named jQuery selectors * @return {Object} - The new DOM binder. */ fluid.createDomBinder = function (container, selectors) { // don't put on a typename to avoid confusing primitive visitComponentChildren var that = { id: fluid.allocateGuid(), cache: {} }; var userJQuery = container.constructor; function cacheKey(name, thisContainer) { return fluid.allocateSimpleId(thisContainer) + "-" + name; } function record(name, thisContainer, result) { that.cache[cacheKey(name, thisContainer)] = result; } that.locate = function (name, localContainer) { var selector, thisContainer, togo; selector = selectors[name]; if (selector === undefined) { return undefined; } thisContainer = localContainer ? $(localContainer) : container; Iif (!thisContainer) { fluid.fail("DOM binder invoked for selector " + name + " without container"); } if (selector === "") { togo = thisContainer; } else Iif (!selector) { togo = userJQuery(); } else { if (typeof (selector) === "function") { togo = userJQuery(selector.call(null, fluid.unwrap(thisContainer))); } else { togo = userJQuery(selector, thisContainer); } } if (!togo.selector) { togo.selector = selector; togo.context = thisContainer; } togo.selectorName = name; record(name, thisContainer, togo); return togo; }; that.fastLocate = function (name, localContainer) { var thisContainer = localContainer ? localContainer : container; var key = cacheKey(name, thisContainer); var togo = that.cache[key]; return togo ? togo : that.locate(name, localContainer); }; that.clear = function () { that.cache = {}; }; that.refresh = function (names, localContainer) { var thisContainer = localContainer ? localContainer : container; Eif (typeof names === "string") { names = [names]; } Iif (thisContainer.length === undefined) { thisContainer = [thisContainer]; } for (var i = 0; i < names.length; ++i) { for (var j = 0; j < thisContainer.length; ++j) { that.locate(names[i], thisContainer[j]); } } }; that.resolvePathSegment = that.locate; return that; }; /* Expect that jQuery selector query has resulted in a non-empty set of * results. If none are found, this function will fail with a diagnostic message, * with the supplied message prepended. */ fluid.expectFilledSelector = function (result, message) { Iif (result && result.length === 0 && result.jquery) { fluid.fail(message + ": selector \"" + result.selector + "\" with name " + result.selectorName + " returned no results in context " + fluid.dumpEl(result.context)); } }; /** * The central initialiation method called as the first act of every Fluid * component. This function automatically merges user options with defaults, * attaches a DOM Binder to the instance, and configures events. * * @param {String} componentName - The unique "name" of the component, which will be used * to fetch the default options from store. By recommendation, this should be the global * name of the component's creator function. * @param {jQueryable} containerSpec - A specifier for the single root "container node" in the * DOM which will house all the markup for this component. * @param {Object} userOptions - The user configuration options for this component. * @param {Object} localOptions - The local configuration options for this component. Unsupported, see comments for initLittleComponent. * @return {Object|null} - The newly created component, or `null` id the container does not exist. */ fluid.initView = function (componentName, containerSpec, userOptions, localOptions) { var container = fluid.container(containerSpec, true); fluid.expectFilledSelector(container, "Error instantiating component with name \"" + componentName); if (!container) { return null; } // Need to ensure container is set early, without relying on an IoC mechanism - rethink this with asynchrony var receiver = function (that) { that.container = container; }; var that = fluid.initLittleComponent(componentName, userOptions, localOptions || {gradeNames: ["fluid.viewComponent"]}, receiver); if (!that.dom) { fluid.initDomBinder(that); } // TODO: cannot afford a mutable container - put this into proper workflow var userJQuery = that.options.jQuery; // Do it a second time to correct for jQuery injection // if (userJQuery) { // container = fluid.container(containerSpec, true, userJQuery); // } fluid.log("Constructing view component " + componentName + " with container " + container.constructor.expando + (userJQuery ? " user jQuery " + userJQuery.expando : "") + " env: " + $.expando); return that; }; /** * Creates a new DOM Binder instance for the specified component and mixes it in. * * @param {Object} that - The component instance to attach the new DOM Binder to. * @param {Object} selectors - a collection of named jQuery selectors * @return {Object} - The DOM for the component. */ fluid.initDomBinder = function (that, selectors) { Iif (!that.container) { fluid.fail("fluid.initDomBinder called for component with typeName " + that.typeName + " without an initialised container - this has probably resulted from placing \"fluid.viewComponent\" in incorrect position in grade merging order. " + " Make sure to place it to the right of any non-view grades in the gradeNames list to ensure that it overrides properly: resolved gradeNames is ", that.options.gradeNames, " for component ", that); } that.dom = fluid.createDomBinder(that.container, selectors || that.options.selectors || {}); that.locate = that.dom.locate; return that.dom; }; // DOM Utilities. /** * Finds the nearest ancestor of the element that matches a predicate * @param {Element} element - DOM element * @param {Function} test - A function (predicate) accepting a DOM element, returning a truthy value representing a match * @return {Element|undefined} - The first element parent for which the predicate returns truthy - or undefined if no parent matches */ fluid.findAncestor = function (element, test) { element = fluid.unwrap(element); while (element) { if (test(element)) { return element; } element = element.parentNode; } }; fluid.findForm = function (node) { return fluid.findAncestor(node, function (element) { return element.nodeName.toLowerCase() === "form"; }); }; /* A utility with the same signature as jQuery.text and jQuery.html, but without the API irregularity * that treats a single argument of undefined as different to no arguments */ // in jQuery 1.7.1, jQuery pulled the same dumb trick with $.text() that they did with $.val() previously, // see comment in fluid.value below fluid.each(["text", "html"], function (method) { fluid[method] = function (node, newValue) { node = $(node); return newValue === undefined ? node[method]() : node[method](newValue); }; }); /* A generalisation of jQuery.val to correctly handle the case of acquiring and * setting the value of clustered radio button/checkbox sets, potentially, given * a node corresponding to just one element. */ fluid.value = function (nodeIn, newValue) { var node = fluid.unwrap(nodeIn); var multiple = false; Iif (node.nodeType === undefined && node.length > 1) { node = node[0]; multiple = true; } if ("input" !== node.nodeName.toLowerCase() || !/radio|checkbox/.test(node.type)) { // resist changes to contract of jQuery.val() in jQuery 1.5.1 (see FLUID-4113) return newValue === undefined ? $(node).val() : $(node).val(newValue); } var name = node.name; Iif (name === undefined) { fluid.fail("Cannot acquire value from node " + fluid.dumpEl(node) + " which does not have name attribute set"); } var elements; Iif (multiple) { elements = nodeIn; } else { elements = node.ownerDocument.getElementsByName(name); var scope = fluid.findForm(node); elements = $.grep(elements, function (element) { Iif (element.name !== name) { return false; } return !scope || fluid.dom.isContainer(scope, element); }); } if (newValue !== undefined) { if (typeof(newValue) === "boolean") { newValue = (newValue ? "true" : "false"); } // jQuery gets this partially right, but when dealing with radio button array will // set all of their values to "newValue" rather than setting the checked property // of the corresponding control. $.each(elements, function () { this.checked = (newValue instanceof Array ? newValue.indexOf(this.value) !== -1 : newValue === this.value); }); } else { // this part jQuery will not do - extracting value from <input> array var checked = $.map(elements, function (element) { return element.checked ? element.value : null; }); return node.type === "radio" ? checked[0] : checked; } }; fluid.BINDING_ROOT_KEY = "fluid-binding-root"; /* Recursively find any data stored under a given name from a node upwards * in its DOM hierarchy **/ fluid.findData = function (elem, name) { while (elem) { var data = $.data(elem, name); if (data) { return data; } elem = elem.parentNode; } }; fluid.bindFossils = function (node, data, fossils) { $.data(node, fluid.BINDING_ROOT_KEY, {data: data, fossils: fossils}); }; fluid.boundPathForNode = function (node, fossils) { node = fluid.unwrap(node); var key = node.name || node.id; var record = fossils[key]; return record ? record.EL : null; }; /* relevant, the changed value received at the given DOM node */ fluid.applyBoundChange = function (node, newValue, applier) { node = fluid.unwrap(node); Eif (newValue === undefined) { newValue = fluid.value(node); } Iif (node.nodeType === undefined && node.length > 0) { node = node[0]; } // assume here that they share name and parent var root = fluid.findData(node, fluid.BINDING_ROOT_KEY); Iif (!root) { fluid.fail("Bound data could not be discovered in any node above " + fluid.dumpEl(node)); } var name = node.name; var fossil = root.fossils[name]; Iif (!fossil) { fluid.fail("No fossil discovered for name " + name + " in fossil record above " + fluid.dumpEl(node)); } if (typeof(fossil.oldvalue) === "boolean") { // deal with the case of an "isolated checkbox" newValue = newValue[0] ? true : false; } var EL = root.fossils[name].EL; if (applier) { applier.fireChangeRequest({path: EL, value: newValue, source: "DOM:" + node.id}); } else { fluid.set(root.data, EL, newValue); } }; /* * Returns a jQuery object given the id of a DOM node. In the case the element * is not found, will return an empty list. */ fluid.jById = function (id, dokkument) { dokkument = dokkument && dokkument.nodeType === 9 ? dokkument : document; var element = fluid.byId(id, dokkument); var togo = element ? $(element) : []; togo.selector = "#" + id; togo.context = dokkument; return togo; }; /** * Returns an DOM element quickly, given an id * * @param {Object} id - the id of the DOM node to find * @param {Document} dokkument - the document in which it is to be found (if left empty, use the current document) * @return {Object} - The DOM element with this id, or null, if none exists in the document. */ fluid.byId = function (id, dokkument) { dokkument = dokkument && dokkument.nodeType === 9 ? dokkument : document; var el = dokkument.getElementById(id); if (el) { // Use element id property here rather than attribute, to work around FLUID-3953 Iif (el.id !== id) { fluid.fail("Problem in document structure - picked up element " + fluid.dumpEl(el) + " for id " + id + " without this id - most likely the element has a name which conflicts with this id"); } return el; } else { return null; } }; /** * Returns the id attribute from a jQuery or pure DOM element. * * @param {jQuery|Element} element - the element to return the id attribute for. * @return {String} - The id attribute of the element. */ fluid.getId = function (element) { return fluid.unwrap(element).id; }; /* * Allocate an id to the supplied element if it has none already, by a simple * scheme resulting in ids "fluid-id-nnnn" where nnnn is an increasing integer. */ fluid.allocateSimpleId = function (element) { element = fluid.unwrap(element); Iif (!element || fluid.isPrimitive(element)) { return null; } if (!element.id) { var simpleId = "fluid-id-" + fluid.allocateGuid(); element.id = simpleId; } return element.id; }; /** * Returns the document to which an element belongs, or the element itself if it is already a document * * @param {jQuery|Element} element - The element to return the document for * @return {Document} - The document in which it is to be found */ fluid.getDocument = function (element) { var node = fluid.unwrap(element); // DOCUMENT_NODE - guide to node types at https://developer.mozilla.org/en/docs/Web/API/Node/nodeType return node.nodeType === 9 ? node : node.ownerDocument; }; fluid.defaults("fluid.ariaLabeller", { gradeNames: ["fluid.viewComponent"], labelAttribute: "aria-label", liveRegionMarkup: "<div class=\"liveRegion fl-hidden-accessible\" aria-live=\"polite\"></div>", liveRegionId: "fluid-ariaLabeller-liveRegion", invokers: { generateLiveElement: { funcName: "fluid.ariaLabeller.generateLiveElement", args: "{that}" }, update: { funcName: "fluid.ariaLabeller.update", args: ["{that}", "{arguments}.0"] } }, listeners: { onCreate: { func: "{that}.update", args: [null] } } }); fluid.ariaLabeller.update = function (that, newOptions) { newOptions = newOptions || that.options; that.container.attr(that.options.labelAttribute, newOptions.text); if (newOptions.dynamicLabel) { var live = fluid.jById(that.options.liveRegionId); if (live.length === 0) { live = that.generateLiveElement(); } live.text(newOptions.text); } }; fluid.ariaLabeller.generateLiveElement = function (that) { var liveEl = $(that.options.liveRegionMarkup); liveEl.prop("id", that.options.liveRegionId); $("body").append(liveEl); return liveEl; }; var LABEL_KEY = "aria-labelling"; fluid.getAriaLabeller = function (element) { element = $(element); var that = fluid.getScopedData(element, LABEL_KEY); return that; }; /* Manages an ARIA-mediated label attached to a given DOM element. An * aria-labelledby attribute and target node is fabricated in the document * if they do not exist already, and a "little component" is returned exposing a method * "update" that allows the text to be updated. */ fluid.updateAriaLabel = function (element, text, options) { options = $.extend({}, options || {}, {text: text}); var that = fluid.getAriaLabeller(element); if (!that) { that = fluid.ariaLabeller(element, options); fluid.setScopedData(element, LABEL_KEY, that); } else { that.update(options); } return that; }; /* "Global Dismissal Handler" for the entire page. Attaches a click handler to the * document root that will cause dismissal of any elements (typically dialogs) which * have registered themselves. Dismissal through this route will automatically clean up * the record - however, the dismisser themselves must take care to deregister in the case * dismissal is triggered through the dialog interface itself. This component can also be * automatically configured by fluid.deadMansBlur by means of the "cancelByDefault" option */ var dismissList = {}; $(document).click(function (event) { var target = fluid.resolveEventTarget(event); while (target) { Iif (dismissList[target.id]) { return; } target = target.parentNode; } fluid.each(dismissList, function (dismissFunc, key) { dismissFunc(event); delete dismissList[key]; }); }); // TODO: extend a configurable equivalent of the above dealing with "focusin" events /* Accepts a free hash of nodes and an optional "dismissal function". * If dismissFunc is set, this "arms" the dismissal system, such that when a click * is received OUTSIDE any of the hierarchy covered by "nodes", the dismissal function * will be executed. */ fluid.globalDismissal = function (nodes, dismissFunc) { fluid.each(nodes, function (node) { // Don't bother to use the real id if it is from a foreign document - we will never receive events // from it directly in any case - and foreign documents may be under the control of malign fiends // such as tinyMCE who allocate the same id to everything var id = fluid.unwrap(node).ownerDocument === document ? fluid.allocateSimpleId(node) : fluid.allocateGuid(); if (dismissFunc) { dismissList[id] = dismissFunc; } else { delete dismissList[id]; } }); }; /* Provides an abstraction for determing the current time. * This is to provide a fix for FLUID-4762, where IE6 - IE8 * do not support Date.now(). */ fluid.now = function () { return Date.now ? Date.now() : (new Date()).getTime(); }; /* Sets an interation on a target control, which morally manages a "blur" for * a possibly composite region. * A timed blur listener is set on the control, which waits for a short period of * time (options.delay, defaults to 150ms) to discover whether the reason for the * blur interaction is that either a focus or click is being serviced on a nominated * set of "exclusions" (options.exclusions, a free hash of elements or jQueries). * If no such event is received within the window, options.handler will be called * with the argument "control", to service whatever interaction is required of the * blur. */ fluid.deadMansBlur = function (control, options) { // TODO: This should be rewritten as a proper component var that = {options: $.extend(true, {}, fluid.defaults("fluid.deadMansBlur"), options)}; that.blurPending = false; that.lastCancel = 0; that.canceller = function (event) { fluid.log("Cancellation through " + event.type + " on " + fluid.dumpEl(event.target)); that.lastCancel = fluid.now(); that.blurPending = false; }; that.noteProceeded = function () { fluid.globalDismissal(that.options.exclusions); }; that.reArm = function () { fluid.globalDismissal(that.options.exclusions, that.proceed); }; that.addExclusion = function (exclusions) { fluid.globalDismissal(exclusions, that.proceed); }; that.proceed = function (event) { fluid.log("Direct proceed through " + event.type + " on " + fluid.dumpEl(event.target)); that.blurPending = false; that.options.handler(control); }; fluid.each(that.options.exclusions, function (exclusion) { exclusion = $(exclusion); fluid.each(exclusion, function (excludeEl) { $(excludeEl).on("focusin", that.canceller). on("fluid-focus", that.canceller). click(that.canceller).mousedown(that.canceller); // Mousedown is added for FLUID-4212, as a result of Chrome bug 6759, 14204 }); }); Eif (!that.options.cancelByDefault) { $(control).on("focusout", function (event) { fluid.log("Starting blur timer for element " + fluid.dumpEl(event.target)); var now = fluid.now(); fluid.log("back delay: " + (now - that.lastCancel)); Eif (now - that.lastCancel > that.options.backDelay) { that.blurPending = true; } setTimeout(function () { if (that.blurPending) { that.options.handler(control); } }, that.options.delay); }); } else { that.reArm(); } return that; }; fluid.defaults("fluid.deadMansBlur", { gradeNames: "fluid.function", delay: 150, backDelay: 100 }); })(jQuery, fluid_3_0_0); |