mirror of
https://github.com/correl/melpa.git
synced 2024-12-23 03:00:12 +00:00
828 lines
28 KiB
JavaScript
828 lines
28 KiB
JavaScript
Mithril = m = new function app(window, undefined) {
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var type = {}.toString
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var parser = /(?:(^|#|\.)([^#\.\[\]]+))|(\[.+?\])/g, attrParser = /\[(.+?)(?:=("|'|)(.*?)\2)?\]/
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var voidElements = /AREA|BASE|BR|COL|COMMAND|EMBED|HR|IMG|INPUT|KEYGEN|LINK|META|PARAM|SOURCE|TRACK|WBR/
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function m() {
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var args = arguments
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var hasAttrs = args[1] != null && type.call(args[1]) == "[object Object]" && !("tag" in args[1]) && !("subtree" in args[1])
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var attrs = hasAttrs ? args[1] : {}
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var classAttrName = "class" in attrs ? "class" : "className"
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var cell = {tag: "div", attrs: {}}
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var match, classes = []
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while (match = parser.exec(args[0])) {
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if (match[1] == "") cell.tag = match[2]
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else if (match[1] == "#") cell.attrs.id = match[2]
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else if (match[1] == ".") classes.push(match[2])
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else if (match[3][0] == "[") {
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var pair = attrParser.exec(match[3])
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cell.attrs[pair[1]] = pair[3] || (pair[2] ? "" :true)
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}
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}
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if (classes.length > 0) cell.attrs[classAttrName] = classes.join(" ")
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cell.children = hasAttrs ? args[2] : args[1]
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for (var attrName in attrs) {
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if (attrName == classAttrName) cell.attrs[attrName] = (cell.attrs[attrName] || "") + " " + attrs[attrName]
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else cell.attrs[attrName] = attrs[attrName]
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}
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return cell
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}
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function build(parentElement, parentTag, parentCache, parentIndex, data, cached, shouldReattach, index, editable, namespace, configs) {
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//`build` is a recursive function that manages creation/diffing/removal of DOM elements based on comparison between `data` and `cached`
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//`parentElement` is a DOM element used for W3C DOM API calls
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//`parentTag` is only used for handling a corner case for textarea values
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//`parentCache` is used to remove nodes in some multi-node cases
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//`parentIndex` and `index` are used to figure out the offset of nodes. They're artifacts from before arrays started being flattened and are likely refactorable
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//`data` and `cached` are, respectively, the new and old nodes being diffed
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//`shouldReattach` is a flag indicating whether a parent node was recreated (if so, and if this node is reused, then this node must reattach itself to the new parent)
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//`editable` is a flag that indicates whether an ancestor is contenteditable
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//`namespace` indicates the closest HTML namespace as it cascades down from an ancestor
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//`configs` is a list of config functions to run after the topmost `build` call finishes running
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//there's logic that relies on the assumption that null and undefined data are equivalent to empty strings
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//- this prevents lifecycle surprises from procedural helpers that mix implicit and explicit return statements
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//- it simplifies diffing code
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if (data == null) data = ""
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if (data.subtree === "retain") return cached
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var cachedType = type.call(cached), dataType = type.call(data)
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if (cached == null || cachedType != dataType) {
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if (cached != null) {
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if (parentCache && parentCache.nodes) {
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var offset = index - parentIndex
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var end = offset + (dataType == "[object Array]" ? data : cached.nodes).length
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clear(parentCache.nodes.slice(offset, end), parentCache.slice(offset, end))
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}
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else if (cached.nodes) clear(cached.nodes, cached)
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}
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cached = new data.constructor
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cached.nodes = []
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}
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if (dataType == "[object Array]") {
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data = flatten(data)
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var nodes = [], intact = cached.length === data.length, subArrayCount = 0
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//key algorithm: sort elements without recreating them if keys are present
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//1) create a map of all existing keys, and mark all for deletion
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//2) add new keys to map and mark them for addition
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//3) if key exists in new list, change action from deletion to a move
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//4) for each key, handle its corresponding action as marked in previous steps
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//5) copy unkeyed items into their respective gaps
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var DELETION = 1, INSERTION = 2 , MOVE = 3
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var existing = {}, unkeyed = [], shouldMaintainIdentities = false
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for (var i = 0; i < cached.length; i++) {
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if (cached[i] && cached[i].attrs && cached[i].attrs.key != null) {
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shouldMaintainIdentities = true
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existing[cached[i].attrs.key] = {action: DELETION, index: i}
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}
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}
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if (shouldMaintainIdentities) {
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for (var i = 0; i < data.length; i++) {
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if (data[i] && data[i].attrs) {
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if (data[i].attrs.key != null) {
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var key = data[i].attrs.key
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if (!existing[key]) existing[key] = {action: INSERTION, index: i}
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else existing[key] = {action: MOVE, index: i, from: existing[key].index, element: parentElement.childNodes[existing[key].index]}
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}
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else unkeyed.push({index: i, element: parentElement.childNodes[i]})
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}
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}
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var actions = Object.keys(existing).map(function(key) {return existing[key]})
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var changes = actions.sort(function(a, b) {return a.action - b.action || a.index - b.index})
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var newCached = cached.slice()
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for (var i = 0, change; change = changes[i]; i++) {
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if (change.action == DELETION) {
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clear(cached[change.index].nodes, cached[change.index])
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newCached.splice(change.index, 1)
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}
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if (change.action == INSERTION) {
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var dummy = window.document.createElement("div")
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dummy.key = data[change.index].attrs.key
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parentElement.insertBefore(dummy, parentElement.childNodes[change.index])
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newCached.splice(change.index, 0, {attrs: {key: data[change.index].attrs.key}, nodes: [dummy]})
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}
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if (change.action == MOVE) {
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if (parentElement.childNodes[change.index] !== change.element && change.element !== null) {
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parentElement.insertBefore(change.element, parentElement.childNodes[change.index])
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}
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newCached[change.index] = cached[change.from]
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}
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}
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for (var i = 0; i < unkeyed.length; i++) {
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var change = unkeyed[i]
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parentElement.insertBefore(change.element, parentElement.childNodes[change.index])
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newCached[change.index] = cached[change.index]
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}
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cached = newCached
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cached.nodes = []
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for (var i = 0, child; child = parentElement.childNodes[i]; i++) cached.nodes.push(child)
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}
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//end key algorithm
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for (var i = 0, cacheCount = 0; i < data.length; i++) {
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var item = build(parentElement, parentTag, cached, index, data[i], cached[cacheCount], shouldReattach, index + subArrayCount || subArrayCount, editable, namespace, configs)
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if (item === undefined) continue
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if (!item.nodes.intact) intact = false
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var isArray = type.call(item) == "[object Array]"
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subArrayCount += isArray ? item.length : 1
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cached[cacheCount++] = item
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}
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if (!intact) {
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for (var i = 0; i < data.length; i++) {
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if (cached[i] != null) nodes = nodes.concat(cached[i].nodes)
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}
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for (var i = 0, node; node = cached.nodes[i]; i++) {
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if (node.parentNode != null && nodes.indexOf(node) < 0) clear([node], [cached[i]])
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}
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for (var i = cached.nodes.length, node; node = nodes[i]; i++) {
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if (node.parentNode == null) parentElement.appendChild(node)
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}
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if (data.length < cached.length) cached.length = data.length
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cached.nodes = nodes
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}
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}
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else if (data != null && dataType == "[object Object]") {
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//if an element is different enough from the one in cache, recreate it
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if (data.tag != cached.tag || Object.keys(data.attrs).join() != Object.keys(cached.attrs).join() || data.attrs.id != cached.attrs.id) {
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clear(cached.nodes)
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if (cached.configContext && typeof cached.configContext.onunload == "function") cached.configContext.onunload()
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}
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if (typeof data.tag != "string") return
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var node, isNew = cached.nodes.length === 0
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if (data.attrs.xmlns) namespace = data.attrs.xmlns
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else if (data.tag === "svg") namespace = "http://www.w3.org/2000/svg"
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else if (data.tag === "math") namespace = "http://www.w3.org/1998/Math/MathML"
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if (isNew) {
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node = namespace === undefined ? window.document.createElement(data.tag) : window.document.createElementNS(namespace, data.tag)
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cached = {
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tag: data.tag,
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//process children before attrs so that select.value works correctly
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children: build(node, data.tag, undefined, undefined, data.children, cached.children, true, 0, data.attrs.contenteditable ? node : editable, namespace, configs),
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attrs: setAttributes(node, data.tag, data.attrs, {}, namespace),
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nodes: [node]
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}
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parentElement.insertBefore(node, parentElement.childNodes[index] || null)
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}
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else {
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node = cached.nodes[0]
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setAttributes(node, data.tag, data.attrs, cached.attrs, namespace)
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cached.children = build(node, data.tag, undefined, undefined, data.children, cached.children, false, 0, data.attrs.contenteditable ? node : editable, namespace, configs)
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cached.nodes.intact = true
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if (shouldReattach === true && node != null) parentElement.insertBefore(node, parentElement.childNodes[index] || null)
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}
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//schedule configs to be called. They are called after `build` finishes running
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if (typeof data.attrs["config"] === "function") {
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configs.push(data.attrs["config"].bind(window, node, !isNew, cached.configContext = cached.configContext || {}, cached))
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}
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}
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else if (typeof dataType != "function") {
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//handle text nodes
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var nodes
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if (cached.nodes.length === 0) {
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if (data.$trusted) {
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nodes = injectHTML(parentElement, index, data)
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}
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else {
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nodes = [window.document.createTextNode(data)]
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if (!parentElement.nodeName.match(voidElements)) parentElement.insertBefore(nodes[0], parentElement.childNodes[index] || null)
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}
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cached = "string number boolean".indexOf(typeof data) > -1 ? new data.constructor(data) : data
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cached.nodes = nodes
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}
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else if (cached.valueOf() !== data.valueOf() || shouldReattach === true) {
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nodes = cached.nodes
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if (!editable || editable !== window.document.activeElement) {
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if (data.$trusted) {
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clear(nodes, cached)
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nodes = injectHTML(parentElement, index, data)
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}
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else {
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//corner case: replacing the nodeValue of a text node that is a child of a textarea/contenteditable doesn't work
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if (parentTag === "textarea") parentElement.value = data
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else if (editable) editable.innerHTML = data
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else {
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if (nodes[0].nodeType == 1 || nodes.length > 1) { //was a trusted string
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clear(cached.nodes, cached)
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nodes = [window.document.createTextNode(data)]
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}
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parentElement.insertBefore(nodes[0], parentElement.childNodes[index] || null)
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nodes[0].nodeValue = data
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}
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}
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}
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cached = new data.constructor(data)
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cached.nodes = nodes
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}
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else cached.nodes.intact = true
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}
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return cached
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}
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function setAttributes(node, tag, dataAttrs, cachedAttrs, namespace) {
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var groups = {}
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for (var attrName in dataAttrs) {
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var dataAttr = dataAttrs[attrName]
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var cachedAttr = cachedAttrs[attrName]
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if (!(attrName in cachedAttrs) || (cachedAttr !== dataAttr) || node === window.document.activeElement) {
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cachedAttrs[attrName] = dataAttr
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if (attrName === "config") continue
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else if (typeof dataAttr == "function" && attrName.indexOf("on") == 0) {
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node[attrName] = autoredraw(dataAttr, node)
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}
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else if (attrName === "style" && typeof dataAttr == "object") {
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for (var rule in dataAttr) {
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if (cachedAttr == null || cachedAttr[rule] !== dataAttr[rule]) node.style[rule] = dataAttr[rule]
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}
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for (var rule in cachedAttr) {
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if (!(rule in dataAttr)) node.style[rule] = ""
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}
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}
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else if (namespace != null) {
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if (attrName === "href") node.setAttributeNS("http://www.w3.org/1999/xlink", "href", dataAttr)
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else if (attrName === "className") node.setAttribute("class", dataAttr)
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else node.setAttribute(attrName, dataAttr)
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}
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else if (attrName === "value" && tag === "input") {
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if (node.value !== dataAttr) node.value = dataAttr
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}
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else if (attrName in node && !(attrName == "list" || attrName == "style")) {
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node[attrName] = dataAttr
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}
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else node.setAttribute(attrName, dataAttr)
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}
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}
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return cachedAttrs
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}
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function clear(nodes, cached) {
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for (var i = nodes.length - 1; i > -1; i--) {
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if (nodes[i] && nodes[i].parentNode) {
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nodes[i].parentNode.removeChild(nodes[i])
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cached = [].concat(cached)
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if (cached[i]) unload(cached[i])
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}
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}
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if (nodes.length != 0) nodes.length = 0
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}
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function unload(cached) {
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if (cached.configContext && typeof cached.configContext.onunload == "function") cached.configContext.onunload()
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if (cached.children) {
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if (type.call(cached.children) == "[object Array]") for (var i = 0; i < cached.children.length; i++) unload(cached.children[i])
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else if (cached.children.tag) unload(cached.children)
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}
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}
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function injectHTML(parentElement, index, data) {
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var nextSibling = parentElement.childNodes[index]
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if (nextSibling) {
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var isElement = nextSibling.nodeType != 1
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var placeholder = window.document.createElement("span")
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if (isElement) {
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parentElement.insertBefore(placeholder, nextSibling)
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placeholder.insertAdjacentHTML("beforebegin", data)
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parentElement.removeChild(placeholder)
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}
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else nextSibling.insertAdjacentHTML("beforebegin", data)
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}
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else parentElement.insertAdjacentHTML("beforeend", data)
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var nodes = []
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while (parentElement.childNodes[index] !== nextSibling) {
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nodes.push(parentElement.childNodes[index])
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index++
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}
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return nodes
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}
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function flatten(data) {
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var flattened = []
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for (var i = 0; i < data.length; i++) {
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var item = data[i]
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if (type.call(item) == "[object Array]") flattened.push.apply(flattened, flatten(item))
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else flattened.push(item)
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}
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return flattened
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}
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function autoredraw(callback, object, group) {
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return function(e) {
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e = e || event
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m.redraw.strategy("diff")
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m.startComputation()
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try {return callback.call(object, e)}
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finally {
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if (!lastRedrawId) lastRedrawId = -1;
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m.endComputation()
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}
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}
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}
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var html
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var documentNode = {
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insertAdjacentHTML: function(_, data) {
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window.document.write(data)
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window.document.close()
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},
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appendChild: function(node) {
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if (html === undefined) html = window.document.createElement("html")
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if (node.nodeName == "HTML") html = node
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else html.appendChild(node)
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if (window.document.documentElement && window.document.documentElement !== html) {
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window.document.replaceChild(html, window.document.documentElement)
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}
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else window.document.appendChild(html)
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},
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insertBefore: function(node) {
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this.appendChild(node)
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},
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childNodes: []
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}
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var nodeCache = [], cellCache = {}
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m.render = function(root, cell, forceRecreation) {
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var configs = []
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if (!root) throw new Error("Please ensure the DOM element exists before rendering a template into it.")
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var id = getCellCacheKey(root)
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var node = root == window.document || root == window.document.documentElement ? documentNode : root
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if (cellCache[id] === undefined) clear(node.childNodes)
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if (forceRecreation === true) reset(root)
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cellCache[id] = build(node, null, undefined, undefined, cell, cellCache[id], false, 0, null, undefined, configs)
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for (var i = 0; i < configs.length; i++) configs[i]()
|
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}
|
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function getCellCacheKey(element) {
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var index = nodeCache.indexOf(element)
|
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return index < 0 ? nodeCache.push(element) - 1 : index
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}
|
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|
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m.trust = function(value) {
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value = new String(value)
|
||
value.$trusted = true
|
||
return value
|
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}
|
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|
||
function _prop(store) {
|
||
var prop = function() {
|
||
if (arguments.length) store = arguments[0]
|
||
return store
|
||
}
|
||
|
||
prop.toJSON = function() {
|
||
return store
|
||
}
|
||
|
||
return prop
|
||
}
|
||
|
||
m.prop = function (store) {
|
||
if ((typeof store === 'object' || typeof store === 'function') &&
|
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typeof store.then === 'function') {
|
||
var prop = _prop()
|
||
newPromisedProp(prop, store).then(prop)
|
||
|
||
return prop
|
||
}
|
||
|
||
return _prop(store)
|
||
}
|
||
|
||
var roots = [], modules = [], controllers = [], lastRedrawId = 0, computePostRedrawHook = null, prevented = false
|
||
m.module = function(root, module) {
|
||
var index = roots.indexOf(root)
|
||
if (index < 0) index = roots.length
|
||
var isPrevented = false
|
||
if (controllers[index] && typeof controllers[index].onunload == "function") {
|
||
var event = {
|
||
preventDefault: function() {isPrevented = true}
|
||
}
|
||
controllers[index].onunload(event)
|
||
}
|
||
if (!isPrevented) {
|
||
m.redraw.strategy("all")
|
||
m.startComputation()
|
||
roots[index] = root
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||
modules[index] = module
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||
controllers[index] = new module.controller
|
||
m.endComputation()
|
||
}
|
||
}
|
||
m.redraw = function(force) {
|
||
var cancel = window.cancelAnimationFrame || window.clearTimeout
|
||
var defer = window.requestAnimationFrame || window.setTimeout
|
||
if (lastRedrawId && force !== true) {
|
||
cancel(lastRedrawId)
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||
lastRedrawId = defer(redraw, 0)
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||
}
|
||
else {
|
||
redraw()
|
||
lastRedrawId = defer(function() {lastRedrawId = null}, 0)
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||
}
|
||
}
|
||
m.redraw.strategy = m.prop()
|
||
function redraw() {
|
||
var mode = m.redraw.strategy()
|
||
for (var i = 0; i < roots.length; i++) {
|
||
if (controllers[i] && mode != "none") m.render(roots[i], modules[i].view(controllers[i]), mode == "all")
|
||
}
|
||
if (computePostRedrawHook) {
|
||
computePostRedrawHook()
|
||
computePostRedrawHook = null
|
||
}
|
||
lastRedrawId = null
|
||
m.redraw.strategy("diff")
|
||
}
|
||
|
||
var pendingRequests = 0
|
||
m.startComputation = function() {pendingRequests++}
|
||
m.endComputation = function() {
|
||
pendingRequests = Math.max(pendingRequests - 1, 0)
|
||
if (pendingRequests == 0) m.redraw()
|
||
}
|
||
|
||
m.withAttr = function(prop, withAttrCallback) {
|
||
return function(e) {
|
||
e = e || event
|
||
var currentTarget = e.currentTarget || this
|
||
withAttrCallback(prop in currentTarget ? currentTarget[prop] : currentTarget.getAttribute(prop))
|
||
}
|
||
}
|
||
|
||
//routing
|
||
var modes = {pathname: "", hash: "#", search: "?"}
|
||
var redirect = function() {}, routeParams = {}, currentRoute
|
||
m.route = function() {
|
||
if (arguments.length === 0) return currentRoute
|
||
else if (arguments.length === 3 && typeof arguments[1] == "string") {
|
||
var root = arguments[0], defaultRoute = arguments[1], router = arguments[2]
|
||
redirect = function(source) {
|
||
var path = currentRoute = normalizeRoute(source)
|
||
if (!routeByValue(root, router, path)) {
|
||
m.route(defaultRoute, true)
|
||
}
|
||
}
|
||
var listener = m.route.mode == "hash" ? "onhashchange" : "onpopstate"
|
||
window[listener] = function() {
|
||
if (currentRoute != normalizeRoute(window.location[m.route.mode])) {
|
||
redirect(window.location[m.route.mode])
|
||
}
|
||
}
|
||
computePostRedrawHook = setScroll
|
||
window[listener]()
|
||
}
|
||
else if (arguments[0].addEventListener) {
|
||
var element = arguments[0]
|
||
var isInitialized = arguments[1]
|
||
if (element.href.indexOf(modes[m.route.mode]) < 0) {
|
||
element.href = window.location.pathname + modes[m.route.mode] + element.pathname
|
||
}
|
||
if (!isInitialized) {
|
||
element.removeEventListener("click", routeUnobtrusive)
|
||
element.addEventListener("click", routeUnobtrusive)
|
||
}
|
||
}
|
||
else if (typeof arguments[0] == "string") {
|
||
currentRoute = arguments[0]
|
||
var querystring = typeof arguments[1] == "object" ? buildQueryString(arguments[1]) : null
|
||
if (querystring) currentRoute += (currentRoute.indexOf("?") === -1 ? "?" : "&") + querystring
|
||
|
||
var shouldReplaceHistoryEntry = (arguments.length == 3 ? arguments[2] : arguments[1]) === true
|
||
|
||
if (window.history.pushState) {
|
||
computePostRedrawHook = function() {
|
||
window.history[shouldReplaceHistoryEntry ? "replaceState" : "pushState"](null, window.document.title, modes[m.route.mode] + currentRoute)
|
||
setScroll()
|
||
}
|
||
redirect(modes[m.route.mode] + currentRoute)
|
||
}
|
||
else window.location[m.route.mode] = currentRoute
|
||
}
|
||
}
|
||
m.route.param = function(key) {return routeParams[key]}
|
||
m.route.mode = "search"
|
||
function normalizeRoute(route) {return route.slice(modes[m.route.mode].length)}
|
||
function routeByValue(root, router, path) {
|
||
routeParams = {}
|
||
|
||
var queryStart = path.indexOf("?")
|
||
if (queryStart !== -1) {
|
||
routeParams = parseQueryString(path.substr(queryStart + 1, path.length))
|
||
path = path.substr(0, queryStart)
|
||
}
|
||
|
||
for (var route in router) {
|
||
if (route == path) {
|
||
m.module(root, router[route])
|
||
return true
|
||
}
|
||
|
||
var matcher = new RegExp("^" + route.replace(/:[^\/]+?\.{3}/g, "(.*?)").replace(/:[^\/]+/g, "([^\\/]+)") + "\/?$")
|
||
|
||
if (matcher.test(path)) {
|
||
path.replace(matcher, function() {
|
||
var keys = route.match(/:[^\/]+/g) || []
|
||
var values = [].slice.call(arguments, 1, -2)
|
||
for (var i = 0; i < keys.length; i++) routeParams[keys[i].replace(/:|\./g, "")] = decodeURIComponent(values[i])
|
||
m.module(root, router[route])
|
||
})
|
||
return true
|
||
}
|
||
}
|
||
}
|
||
function routeUnobtrusive(e) {
|
||
e = e || event
|
||
if (e.ctrlKey || e.metaKey || e.which == 2) return
|
||
e.preventDefault()
|
||
m.route(e.currentTarget[m.route.mode].slice(modes[m.route.mode].length))
|
||
}
|
||
function setScroll() {
|
||
if (m.route.mode != "hash" && window.location.hash) window.location.hash = window.location.hash
|
||
else window.scrollTo(0, 0)
|
||
}
|
||
function buildQueryString(object, prefix) {
|
||
var str = []
|
||
for(var prop in object) {
|
||
var key = prefix ? prefix + "[" + prop + "]" : prop, value = object[prop]
|
||
str.push(typeof value == "object" ? buildQueryString(value, key) : encodeURIComponent(key) + "=" + encodeURIComponent(value))
|
||
}
|
||
return str.join("&")
|
||
}
|
||
function parseQueryString(str) {
|
||
var pairs = str.split("&"), params = {}
|
||
for (var i = 0; i < pairs.length; i++) {
|
||
var pair = pairs[i].split("=")
|
||
params[decodeSpace(pair[0])] = pair[1] ? decodeSpace(pair[1]) : (pair.length === 1 ? true : "")
|
||
}
|
||
return params
|
||
}
|
||
function decodeSpace(string) {
|
||
return decodeURIComponent(string.replace(/\+/g, " "))
|
||
}
|
||
function reset(root) {
|
||
var cacheKey = getCellCacheKey(root)
|
||
clear(root.childNodes, cellCache[cacheKey])
|
||
cellCache[cacheKey] = undefined
|
||
}
|
||
|
||
function newPromisedProp(prop, promise) {
|
||
prop.then = function () {
|
||
var newProp = m.prop()
|
||
return newPromisedProp(newProp,
|
||
promise.then.apply(promise, arguments).then(newProp))
|
||
}
|
||
prop.promise = prop
|
||
prop.resolve = function (val) {
|
||
prop(val)
|
||
promise = promise.resolve.apply(promise, arguments)
|
||
return prop
|
||
}
|
||
prop.reject = function () {
|
||
promise = promise.reject.apply(promise, arguments)
|
||
return prop
|
||
}
|
||
|
||
return prop
|
||
}
|
||
m.deferred = function () {
|
||
return newPromisedProp(m.prop(), new Deferred())
|
||
}
|
||
// Promiz.mithril.js | Zolmeister | MIT
|
||
function Deferred(fn, er) {
|
||
// states
|
||
// 0: pending
|
||
// 1: resolving
|
||
// 2: rejecting
|
||
// 3: resolved
|
||
// 4: rejected
|
||
var self = this,
|
||
state = 0,
|
||
val = 0,
|
||
next = [];
|
||
|
||
self['promise'] = self
|
||
|
||
self['resolve'] = function (v) {
|
||
if (!state) {
|
||
val = v
|
||
state = 1
|
||
|
||
fire()
|
||
}
|
||
return this
|
||
}
|
||
|
||
self['reject'] = function (v) {
|
||
if (!state) {
|
||
val = v
|
||
state = 2
|
||
|
||
fire()
|
||
}
|
||
return this
|
||
}
|
||
|
||
self['then'] = function (fn, er) {
|
||
var d = new Deferred(fn, er)
|
||
if (state == 3) {
|
||
d.resolve(val)
|
||
}
|
||
else if (state == 4) {
|
||
d.reject(val)
|
||
}
|
||
else {
|
||
next.push(d)
|
||
}
|
||
return d
|
||
}
|
||
|
||
var finish = function (type) {
|
||
state = type || 4
|
||
next.map(function (p) {
|
||
state == 3 && p.resolve(val) || p.reject(val)
|
||
})
|
||
}
|
||
|
||
// ref : reference to 'then' function
|
||
// cb, ec, cn : successCallback, failureCallback, notThennableCallback
|
||
function thennable (ref, cb, ec, cn) {
|
||
if ((typeof val == 'object' || typeof val == 'function') && typeof ref == 'function') {
|
||
try {
|
||
|
||
// cnt protects against abuse calls from spec checker
|
||
var cnt = 0
|
||
ref.call(val, function (v) {
|
||
if (cnt++) return
|
||
val = v
|
||
cb()
|
||
}, function (v) {
|
||
if (cnt++) return
|
||
val = v
|
||
ec()
|
||
})
|
||
} catch (e) {
|
||
val = e
|
||
ec()
|
||
}
|
||
} else {
|
||
cn()
|
||
}
|
||
};
|
||
|
||
function fire() {
|
||
|
||
// check if it's a thenable
|
||
var ref;
|
||
try {
|
||
ref = val && val.then
|
||
} catch (e) {
|
||
val = e
|
||
state = 2
|
||
return fire()
|
||
}
|
||
thennable(ref, function () {
|
||
state = 1
|
||
fire()
|
||
}, function () {
|
||
state = 2
|
||
fire()
|
||
}, function () {
|
||
try {
|
||
if (state == 1 && typeof fn == 'function') {
|
||
val = fn(val)
|
||
}
|
||
|
||
else if (state == 2 && typeof er == 'function') {
|
||
val = er(val)
|
||
state = 1
|
||
}
|
||
} catch (e) {
|
||
val = e
|
||
return finish()
|
||
}
|
||
|
||
if (val == self) {
|
||
val = TypeError()
|
||
finish()
|
||
} else thennable(ref, function () {
|
||
finish(3)
|
||
}, finish, function () {
|
||
finish(state == 1 && 3)
|
||
})
|
||
|
||
})
|
||
}
|
||
}
|
||
|
||
m.sync = function(args) {
|
||
var method = "resolve"
|
||
function synchronizer(pos, resolved) {
|
||
return function(value) {
|
||
results[pos] = value
|
||
if (!resolved) method = "reject"
|
||
if (--outstanding == 0) {
|
||
deferred.promise(results)
|
||
deferred[method](results)
|
||
}
|
||
return value
|
||
}
|
||
}
|
||
|
||
var deferred = m.deferred()
|
||
var outstanding = args.length
|
||
var results = new Array(outstanding)
|
||
if (args.length > 0) {
|
||
for (var i = 0; i < args.length; i++) {
|
||
args[i].then(synchronizer(i, true), synchronizer(i, false))
|
||
}
|
||
}
|
||
else deferred.resolve()
|
||
|
||
return deferred.promise
|
||
}
|
||
function identity(value) {return value}
|
||
|
||
function ajax(options) {
|
||
var xhr = new window.XMLHttpRequest
|
||
xhr.open(options.method, options.url, true, options.user, options.password)
|
||
xhr.onreadystatechange = function() {
|
||
if (xhr.readyState === 4) {
|
||
if (xhr.status >= 200 && xhr.status < 300) options.onload({type: "load", target: xhr})
|
||
else options.onerror({type: "error", target: xhr})
|
||
}
|
||
}
|
||
if (options.serialize == JSON.stringify && options.method != "GET") {
|
||
xhr.setRequestHeader("Content-Type", "application/json; charset=utf-8");
|
||
}
|
||
if (typeof options.config == "function") {
|
||
var maybeXhr = options.config(xhr, options)
|
||
if (maybeXhr != null) xhr = maybeXhr
|
||
}
|
||
xhr.send(options.method == "GET" ? "" : options.data)
|
||
return xhr
|
||
}
|
||
function bindData(xhrOptions, data, serialize) {
|
||
if (data && Object.keys(data).length > 0) {
|
||
if (xhrOptions.method == "GET") {
|
||
xhrOptions.url = xhrOptions.url + (xhrOptions.url.indexOf("?") < 0 ? "?" : "&") + buildQueryString(data)
|
||
}
|
||
else xhrOptions.data = serialize(data)
|
||
}
|
||
return xhrOptions
|
||
}
|
||
function parameterizeUrl(url, data) {
|
||
var tokens = url.match(/:[a-z]\w+/gi)
|
||
if (tokens && data) {
|
||
for (var i = 0; i < tokens.length; i++) {
|
||
var key = tokens[i].slice(1)
|
||
url = url.replace(tokens[i], data[key])
|
||
delete data[key]
|
||
}
|
||
}
|
||
return url
|
||
}
|
||
|
||
m.request = function(xhrOptions) {
|
||
if (xhrOptions.background !== true) m.startComputation()
|
||
var deferred = m.deferred()
|
||
var serialize = xhrOptions.serialize = xhrOptions.serialize || JSON.stringify
|
||
var deserialize = xhrOptions.deserialize = xhrOptions.deserialize || JSON.parse
|
||
var extract = xhrOptions.extract || function(xhr) {
|
||
return xhr.responseText.length === 0 && deserialize === JSON.parse ? null : xhr.responseText
|
||
}
|
||
xhrOptions.url = parameterizeUrl(xhrOptions.url, xhrOptions.data)
|
||
xhrOptions = bindData(xhrOptions, xhrOptions.data, serialize)
|
||
xhrOptions.onload = xhrOptions.onerror = function(e) {
|
||
try {
|
||
e = e || event
|
||
var unwrap = (e.type == "load" ? xhrOptions.unwrapSuccess : xhrOptions.unwrapError) || identity
|
||
var response = unwrap(deserialize(extract(e.target, xhrOptions)))
|
||
if (e.type == "load") {
|
||
if (type.call(response) == "[object Array]" && xhrOptions.type) {
|
||
for (var i = 0; i < response.length; i++) response[i] = new xhrOptions.type(response[i])
|
||
}
|
||
else if (xhrOptions.type) response = new xhrOptions.type(response)
|
||
}
|
||
deferred[e.type == "load" ? "resolve" : "reject"](response)
|
||
}
|
||
catch (e) {
|
||
if (e instanceof SyntaxError) throw new SyntaxError("Could not parse HTTP response. See http://lhorie.github.io/mithril/mithril.request.html#using-variable-data-formats")
|
||
else if (type.call(e) == "[object Error]" && e.constructor !== Error) throw e
|
||
else deferred.reject(e)
|
||
}
|
||
if (xhrOptions.background !== true) m.endComputation()
|
||
}
|
||
ajax(xhrOptions)
|
||
return deferred.promise
|
||
}
|
||
|
||
//testing API
|
||
m.deps = function(mock) {return window = mock}
|
||
//for internal testing only, do not use `m.deps.factory`
|
||
m.deps.factory = app
|
||
|
||
return m
|
||
}(typeof window != "undefined" ? window : {})
|
||
|
||
if (typeof module != "undefined" && module !== null) module.exports = m
|
||
if (typeof define == "function" && define.amd) define(function() {return m})
|
||
|
||
;;;
|