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Copyright 2013 OCAD University Copyright 2013-2014 Raising the Floor - US Copyright 2015-2016 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 */ fluid_3_0_0 = fluid_3_0_0 || {}; (function ($, fluid) { "use strict"; Iif (!fluid.renderer) { fluid.fail("fluidRenderer.js is a necessary dependency of RendererUtilities"); } // TODO: API status of these 3 functions is uncertain. So far, they have never // appeared in documentation. fluid.renderer.visitDecorators = function (that, visitor) { fluid.visitComponentChildren(that, function (component, name) { if (name.indexOf(fluid.renderer.decoratorComponentPrefix) === 0) { visitor(component, name); } }, {flat: true}, []); }; fluid.renderer.clearDecorators = function (that) { var instantiator = fluid.getInstantiator(that); fluid.renderer.visitDecorators(that, function (component, name) { instantiator.clearComponent(that, name); }); }; fluid.renderer.getDecoratorComponents = function (that) { var togo = {}; fluid.renderer.visitDecorators(that, function (component, name) { togo[name] = component; }); return togo; }; // Utilities for coordinating options in renderer components - this code is all pretty // dreadful and needs to be organised as a suitable set of defaults and policies fluid.renderer.modeliseOptions = function (options, defaults, baseOptions) { return $.extend({}, defaults, fluid.filterKeys(baseOptions, ["model", "applier"]), options); }; fluid.renderer.reverseMerge = function (target, source, names) { names = fluid.makeArray(names); fluid.each(names, function (name) { if (target[name] === undefined && source[name] !== undefined) { target[name] = source[name]; } }); }; /** "Renderer component" infrastructure **/ // TODO: fix this up with IoC and improved handling of templateSource as well as better // options layout (model appears in both rOpts and eOpts) // "options" here is the original "rendererFnOptions" fluid.renderer.createRendererSubcomponent = function (container, selectors, options, parentThat, fossils) { options = options || {}; var source = options.templateSource ? options.templateSource : {node: $(container)}; var nativeModel = options.rendererOptions.model === undefined; var rendererOptions = fluid.renderer.modeliseOptions(options.rendererOptions, null, parentThat); rendererOptions.fossils = fossils || {}; rendererOptions.parentComponent = parentThat; if (container.jquery) { var cascadeOptions = { document: container[0].ownerDocument, jQuery: container.constructor }; fluid.renderer.reverseMerge(rendererOptions, cascadeOptions, fluid.keys(cascadeOptions)); } var that = {}; var templates = null; that.render = function (tree) { var cutpointFn = options.cutpointGenerator || "fluid.renderer.selectorsToCutpoints"; rendererOptions.cutpoints = rendererOptions.cutpoints || fluid.invokeGlobalFunction(cutpointFn, [selectors, options]); if (nativeModel) { // check necessary since the component insanely supports the possibility the model is not the component's model! // and the pagedTable uses this. rendererOptions.model = parentThat.model; // fix FLUID-5664 } var renderTarget = $(options.renderTarget ? options.renderTarget : container); if (templates) { fluid.clear(rendererOptions.fossils); fluid.reRender(templates, renderTarget, tree, rendererOptions); } else { if (typeof(source) === "function") { // TODO: make a better attempt than this at asynchrony source = source(); } templates = fluid.render(source, renderTarget, tree, rendererOptions); } }; return that; }; fluid.defaults("fluid.rendererComponent", { gradeNames: ["fluid.viewComponent"], initFunction: "fluid.initRendererComponent", mergePolicy: { "rendererOptions.idMap": "nomerge", protoTree: "noexpand, replace", parentBundle: "nomerge", "changeApplierOptions.resolverSetConfig": "resolverSetConfig" }, invokers: { refreshView: { funcName: "fluid.rendererComponent.refreshView", args: "{that}" }, produceTree: { funcName: "fluid.rendererComponent.produceTree", args: "{that}" } }, rendererOptions: { autoBind: true }, events: { onResourcesFetched: null, prepareModelForRender: null, onRenderTree: null, afterRender: null }, listeners: { onCreate: { funcName: "fluid.rendererComponent.renderOnInit", args: ["{that}.options.renderOnInit", "{that}"], priority: "last" } } }); fluid.rendererComponent.renderOnInit = function (renderOnInit, that) { if (renderOnInit || that.renderOnInit) { that.refreshView(); } }; fluid.protoExpanderForComponent = function (parentThat, options) { var expanderOptions = fluid.renderer.modeliseOptions(options.expanderOptions, {ELstyle: "${}"}, parentThat); fluid.renderer.reverseMerge(expanderOptions, options, ["resolverGetConfig", "resolverSetConfig"]); var expander = fluid.renderer.makeProtoExpander(expanderOptions, parentThat); return expander; }; fluid.rendererComponent.refreshView = function (that) { if (!that.renderer) { // Terrible stopgap fix for FLUID-5279 - all of this implementation will be swept away // model relay may cause this to be called during init, and we have no proper definition for "that.renderer" since it is // constructed in a terrible way that.renderOnInit = true; return; } else { fluid.renderer.clearDecorators(that); that.events.prepareModelForRender.fire(that.model, that.applier, that); var tree = that.produceTree(that); var rendererFnOptions = that.renderer.rendererFnOptions; // Terrible stopgap fix for FLUID-5821 - given that model reference may be rebound, generate the expander from scratch on every render if (!rendererFnOptions.noexpand) { var expander = fluid.protoExpanderForComponent(that, rendererFnOptions); tree = expander(tree); } that.events.onRenderTree.fire(that, tree); that.renderer.render(tree); that.events.afterRender.fire(that); } }; fluid.rendererComponent.produceTree = function (that) { var produceTreeOption = that.options.produceTree; return produceTreeOption ? (typeof(produceTreeOption) === "string" ? fluid.getGlobalValue(produceTreeOption) : produceTreeOption) (that) : that.options.protoTree; }; fluid.initRendererComponent = function (componentName, container, options) { var that = fluid.initView(componentName, container, options, {gradeNames: ["fluid.rendererComponent"]}); fluid.getForComponent(that, "model"); // Force resolution of these due to our terrible workflow fluid.getForComponent(that, "applier"); fluid.diagnoseFailedView(componentName, that, fluid.defaults(componentName), arguments); fluid.fetchResources(that.options.resources, that.events.onResourcesFetched.fire); // TODO: deal with asynchrony var rendererOptions = fluid.renderer.modeliseOptions(that.options.rendererOptions, null, that); var messageResolver; if (!rendererOptions.messageSource && that.options.strings) { messageResolver = fluid.messageResolver({ messageBase: that.options.strings, resolveFunc: that.options.messageResolverFunction, parents: fluid.makeArray(that.options.parentBundle) }); rendererOptions.messageSource = {type: "resolver", resolver: messageResolver}; } fluid.renderer.reverseMerge(rendererOptions, that.options, ["resolverGetConfig", "resolverSetConfig"]); that.rendererOptions = rendererOptions; var rendererFnOptions = $.extend({}, that.options.rendererFnOptions, { rendererOptions: rendererOptions, repeatingSelectors: that.options.repeatingSelectors, selectorsToIgnore: that.options.selectorsToIgnore, expanderOptions: { envAdd: {styles: that.options.styles} } }); if (that.options.resources && that.options.resources.template) { rendererFnOptions.templateSource = function () { // TODO: don't obliterate, multitemplates, etc. return that.options.resources.template.resourceText; }; } fluid.renderer.reverseMerge(rendererFnOptions, that.options, ["resolverGetConfig", "resolverSetConfig"]); Iif (rendererFnOptions.rendererTargetSelector) { container = function () {return that.dom.locate(rendererFnOptions.rendererTargetSelector); }; } var renderer = { fossils: {}, rendererFnOptions: rendererFnOptions, boundPathForNode: function (node) { return fluid.boundPathForNode(node, renderer.fossils); } }; var rendererSub = fluid.renderer.createRendererSubcomponent(container, that.options.selectors, rendererFnOptions, that, renderer.fossils); that.renderer = $.extend(renderer, rendererSub); if (messageResolver) { that.messageResolver = messageResolver; } renderer.refreshView = fluid.getForComponent(that, "refreshView"); // Stopgap implementation for FLUID-4334 return that; }; var removeSelectors = function (selectors, selectorsToIgnore) { fluid.each(fluid.makeArray(selectorsToIgnore), function (selectorToIgnore) { delete selectors[selectorToIgnore]; }); return selectors; }; var markRepeated = function (selectorKey, repeatingSelectors) { if (repeatingSelectors) { fluid.each(repeatingSelectors, function (repeatingSelector) { if (selectorKey === repeatingSelector) { selectorKey = selectorKey + ":"; } }); } return selectorKey; }; fluid.renderer.selectorsToCutpoints = function (selectors, options) { var togo = []; options = options || {}; selectors = fluid.copy(selectors); // Make a copy before potentially destructively changing someone's selectors. if (options.selectorsToIgnore) { selectors = removeSelectors(selectors, options.selectorsToIgnore); } for (var selectorKey in selectors) { togo.push({ id: markRepeated(selectorKey, options.repeatingSelectors), selector: selectors[selectorKey] }); } return togo; }; /** END of "Renderer Components" infrastructure **/ fluid.renderer.NO_COMPONENT = {}; /* A special "shallow copy" operation suitable for nondestructively * merging trees of components. jQuery.extend in shallow mode will * neglect null valued properties. * This function is unsupported: It is not really intended for use by implementors. */ fluid.renderer.mergeComponents = function (target, source) { for (var key in source) { target[key] = source[key]; } return target; }; fluid.registerNamespace("fluid.renderer.selection"); /** Definition of expanders - firstly, "heavy" expanders **/ fluid.renderer.selection.inputs = function (options, container, key, config) { fluid.expect("Selection to inputs expander", options, ["selectID", "inputID", "labelID", "rowID"]); var selection = config.expander(options.tree); // Remove the tree from option expansion as this is handled above, and // the tree may have strings with similar syntax to IoC references. var optsToExpand = fluid.censorKeys(options, ["tree"]); var expandedOpts = config.expandLight(optsToExpand); var rows = fluid.transform(selection.optionlist.value, function (option, index) { var togo = {}; var element = {parentRelativeID: "..::" + expandedOpts.selectID, choiceindex: index}; togo[expandedOpts.inputID] = element; togo[expandedOpts.labelID] = fluid.copy(element); return togo; }); var togo = {}; // TODO: JICO needs to support "quoted literal key initialisers" :P togo[expandedOpts.selectID] = selection; togo[expandedOpts.rowID] = {children: rows}; togo = config.expander(togo); return togo; }; fluid.renderer.repeat = function (options, container, key, config) { fluid.expect("Repetition expander", options, ["controlledBy", "tree"]); var env = config.threadLocal(); var path = fluid.extractContextualPath(options.controlledBy, {ELstyle: "ALL"}, env); var list = fluid.get(config.model, path, config.resolverGetConfig); var togo = {}; Iif (!list || list.length === 0) { return options.ifEmpty ? config.expander(options.ifEmpty) : togo; } var expanded = []; fluid.each(list, function (element, i) { var EL = fluid.model.composePath(path, i); var envAdd = {}; Eif (options.pathAs) { envAdd[options.pathAs] = "${" + EL + "}"; } if (options.valueAs) { envAdd[options.valueAs] = fluid.get(config.model, EL, config.resolverGetConfig); } var expandrow = fluid.withEnvironment(envAdd, function () { return config.expander(options.tree); }, env); if (fluid.isArrayable(expandrow)) { if (expandrow.length > 0) { expanded.push({children: expandrow}); } } else Eif (expandrow !== fluid.renderer.NO_COMPONENT) { expanded.push(expandrow); } }); var repeatID = options.repeatID; if (repeatID.indexOf(":") === -1) { repeatID = repeatID + ":"; } fluid.each(expanded, function (entry) {entry.ID = repeatID; }); return expanded; }; fluid.renderer.condition = function (options, container, key, config) { fluid.expect("Selection to condition expander", options, ["condition"]); var condition; if (options.condition.funcName) { var args = config.expandLight(options.condition.args); condition = fluid.invokeGlobalFunction(options.condition.funcName, args); } else Iif (options.condition.expander) { condition = config.expander(options.condition); } else { condition = config.expandLight(options.condition); } var tree = (condition ? options.trueTree : options.falseTree); if (!tree) { tree = fluid.renderer.NO_COMPONENT; } return config.expander(tree); }; /* An EL extraction utility suitable for context expressions which occur in * expanding component trees. It dispatches context expressions to fluid.transformContextPath * in order to resolve them against EL references stored in the direct environment, and hence * to the "true (direct) model" - however, if there is no entry in the direct environment, it will resort to the "externalFetcher". * It satisfies a similar contract as fluid.extractEL, in that it will either return * an EL path, or undefined if the string value supplied cannot be interpreted * as an EL path with respect to the supplied options - it may also return {value: value} * in the case the context can be resolved by the supplied "externalFetcher" (required for FLUID-4986) */ // unsupported, non-API function fluid.extractContextualPath = function (string, options, env, externalFetcher) { var parsed = fluid.extractELWithContext(string, options); if (parsed) { if (parsed.context) { return env[parsed.context] ? fluid.transformContextPath(parsed, env).path : {value: externalFetcher(parsed)}; } else { return parsed.path; } } }; // unsupported, non-API function fluid.transformContextPath = function (parsed, env) { if (parsed.context) { var fetched = env[parsed.context]; var EL; if (typeof(fetched) === "string") { EL = fluid.extractEL(fetched, {ELstyle: "${}"}); } if (EL) { return { noDereference: parsed.path === "", path: fluid.model.composePath(EL, parsed.path) }; } } return parsed; }; // A forgiving variation of "makeStackFetcher" that returns nothing on failing to resolve an IoC reference, // in keeping with current protoComponent semantics. Note to self: abolish protoComponents fluid.renderer.makeExternalFetcher = function (contextThat) { return function (parsed) { var foundComponent = fluid.resolveContext(parsed.context, contextThat); return foundComponent ? fluid.getForComponent(foundComponent, parsed.path) : undefined; }; }; /** Create a "protoComponent expander" with the supplied set of options. * The returned value will be a function which accepts a "protoComponent tree" * as argument, and returns a "fully expanded" tree suitable for supplying * directly to the renderer. * A "protoComponent tree" is similar to the "dehydrated form" accepted by * the historical renderer - only * i) The input format is unambiguous - this expander will NOT accept hydrated * components in the {ID: "myId, myfield: "myvalue"} form - but ONLY in * the dehydrated {myID: {myfield: myvalue}} form. * ii) This expander has considerably greater power to expand condensed trees. * In particular, an "EL style" option can be supplied which will expand bare * strings found as values in the tree into UIBound components by a configurable * strategy. Supported values for "ELstyle" are a) "ALL" - every string will be * interpreted as an EL reference and assigned to the "valuebinding" member of * the UIBound, or b) any single character, which if it appears as the first * character of the string, will mark it out as an EL reference - otherwise it * will be considered a literal value, or c) the value "${}" which will be * recognised bracketing any other EL expression. */ fluid.renderer.makeProtoExpander = function (expandOptions, parentThat) { // shallow copy of options - cheaply avoid destroying model, and all others are primitive var options = $.extend({ ELstyle: "${}" }, expandOptions); // shallow copy of options if (parentThat) { options.externalFetcher = fluid.renderer.makeExternalFetcher(parentThat); } var threadLocal; // rebound on every expansion at entry point function fetchEL(string) { var env = threadLocal(); return fluid.extractContextualPath(string, options, env, options.externalFetcher); } var IDescape = options.IDescape || "\\"; var expandLight = function (source) { return fluid.expand(source, options); }; var expandBound = function (value, concrete) { if (value.messagekey !== undefined) { return { componentType: "UIMessage", messagekey: expandBound(value.messagekey), args: expandLight(value.args) }; } var proto; if (!fluid.isPrimitive(value) && !fluid.isArrayable(value)) { proto = $.extend({}, value); if (proto.decorators) { proto.decorators = expandLight(proto.decorators); } value = proto.value; delete proto.value; } else { proto = {}; } var EL; if (typeof (value) === "string") { var fetched = fetchEL(value); EL = typeof (fetched) === "string" ? fetched : null; value = fluid.get(fetched, "value") || value; } if (EL) { proto.valuebinding = EL; } else if (value !== undefined) { proto.value = value; } if (options.model && proto.valuebinding && proto.value === undefined) { proto.value = fluid.get(options.model, proto.valuebinding, options.resolverGetConfig); } if (concrete) { proto.componentType = "UIBound"; } return proto; }; options.filter = fluid.expander.lightFilter; var expandCond; var expandLeafOrCond; var expandEntry = function (entry) { var comp = []; expandCond(entry, comp); return {children: comp}; }; var expandExternal = function (entry) { if (entry === fluid.renderer.NO_COMPONENT) { return entry; } var singleTarget; var target = []; var pusher = function (comp) { singleTarget = comp; }; expandLeafOrCond(entry, target, pusher); return singleTarget || target; }; var expandConfig = { model: options.model, resolverGetConfig: options.resolverGetConfig, resolverSetConfig: options.resolverSetConfig, expander: expandExternal, expandLight: expandLight //threadLocal: threadLocal }; var expandLeaf = function (leaf, componentType) { var togo = {componentType: componentType}; var map = fluid.renderer.boundMap[componentType] || {}; for (var key in leaf) { if (/decorators|args/.test(key)) { togo[key] = expandLight(leaf[key]); continue; } else if (map[key]) { togo[key] = expandBound(leaf[key]); } else { togo[key] = leaf[key]; } } return togo; }; // A child entry may be a cond, a leaf, or another "thing with children". // Unlike the case with a cond's contents, these must be homogeneous - at least // they may either be ALL leaves, or else ALL cond/childed etc. // In all of these cases, the key will be THE PARENT'S KEY var expandChildren = function (entry, pusher) { var children = entry.children; for (var i = 0; i < children.length; ++i) { // each child in this list will lead to a WHOLE FORKED set of children. var target = []; var comp = { children: target}; var child = children[i]; // This use of function creation within a loop is acceptable since // the function does not attempt to close directly over the loop counter var childPusher = function (comp) { // eslint-disable-line no-loop-func target[target.length] = comp; }; expandLeafOrCond(child, target, childPusher); // Rescue the case of an expanded leaf into single component - TODO: check what sense this makes of the grammar if (comp.children.length === 1 && !comp.children[0].ID) { comp = comp.children[0]; } pusher(comp); } }; function detectBareBound(entry) { return fluid.find(entry, function (value, key) { return key === "decorators"; }) !== false; } // We have reached something which is either a leaf or Cond - either inside // a Cond or as an entry in children. expandLeafOrCond = function (entry, target, pusher) { var componentType = fluid.renderer.inferComponentType(entry); if (!componentType && (fluid.isPrimitive(entry) || detectBareBound(entry))) { componentType = "UIBound"; } if (componentType) { pusher(componentType === "UIBound" ? expandBound(entry, true) : expandLeaf(entry, componentType)); } else { // we couldn't recognise it as a leaf, so it must be a cond // this may be illegal if we are already in a cond. Iif (!target) { fluid.fail("Illegal cond->cond transition"); } expandCond(entry, target); } }; // cond entry may be a leaf, "thing with children" or a "direct bound". // a Cond can ONLY occur as a direct member of "children". Each "cond" entry may // give rise to one or many elements with the SAME key - if "expandSingle" discovers // "thing with children" they will all share the same key found in proto. expandCond = function (proto, target) { var key; var expandToTarget = function (expander) { var expanded = fluid.invokeGlobalFunction(expander.type, [expander, proto, key, expandConfig]); if (expanded !== fluid.renderer.NO_COMPONENT) { fluid.each(expanded, function (el) {target[target.length] = el; }); } }; var condPusher = function (comp) { comp.ID = key; target[target.length] = comp; }; for (key in proto) { var entry = proto[key]; Iif (key.charAt(0) === IDescape) { key = key.substring(1); } if (key === "expander") { var expanders = fluid.makeArray(entry); fluid.each(expanders, expandToTarget); } else Eif (entry) { if (entry.children) { if (key.indexOf(":") === -1) { key = key + ":"; } expandChildren(entry, condPusher); } else if (fluid.renderer.isBoundPrimitive(entry)) { condPusher(expandBound(entry, true)); } else { expandLeafOrCond(entry, null, condPusher); } } } }; return function (entry) { threadLocal = fluid.threadLocal(function () { return $.extend({}, options.envAdd); }); options.fetcher = fluid.makeEnvironmentFetcher(options.model, fluid.transformContextPath, threadLocal, options.externalFetcher); expandConfig.threadLocal = threadLocal; return expandEntry(entry); }; }; })(jQuery, fluid_3_0_0); |