699 lines
26 KiB
JavaScript
699 lines
26 KiB
JavaScript
"use strict"
|
|
|
|
var Vnode = require("../render/vnode")
|
|
|
|
module.exports = function($window) {
|
|
var $doc = $window.document
|
|
var $emptyFragment = $doc.createDocumentFragment()
|
|
|
|
var nameSpace = {
|
|
svg: "http://www.w3.org/2000/svg",
|
|
math: "http://www.w3.org/1998/Math/MathML"
|
|
}
|
|
|
|
var onevent
|
|
function setEventCallback(callback) {return onevent = callback}
|
|
|
|
function getNameSpace(vnode) {
|
|
return vnode.attrs && vnode.attrs.xmlns || nameSpace[vnode.tag]
|
|
}
|
|
|
|
//sanity check to discourage people from doing `vnode.state = ...`
|
|
function checkState(vnode, original) {
|
|
if (vnode.state !== original) throw new Error("`vnode.state` must not be modified")
|
|
}
|
|
|
|
//Note: the hook is passed as the `this` argument to allow proxying the
|
|
//arguments without requiring a full array allocation to do so. It also
|
|
//takes advantage of the fact the current `vnode` is the first argument in
|
|
//all lifecycle methods.
|
|
function callHook(vnode) {
|
|
var original = vnode.state
|
|
try {
|
|
return this.apply(original, arguments)
|
|
} finally {
|
|
checkState(vnode, original)
|
|
}
|
|
}
|
|
|
|
//create
|
|
function createNodes(parent, vnodes, start, end, hooks, nextSibling, ns) {
|
|
for (var i = start; i < end; i++) {
|
|
var vnode = vnodes[i]
|
|
if (vnode != null) {
|
|
createNode(parent, vnode, hooks, ns, nextSibling)
|
|
}
|
|
}
|
|
}
|
|
function createNode(parent, vnode, hooks, ns, nextSibling) {
|
|
var tag = vnode.tag
|
|
if (typeof tag === "string") {
|
|
vnode.state = {}
|
|
if (vnode.attrs != null) initLifecycle(vnode.attrs, vnode, hooks)
|
|
switch (tag) {
|
|
case "#": return createText(parent, vnode, nextSibling)
|
|
case "<": return createHTML(parent, vnode, nextSibling)
|
|
case "[": return createFragment(parent, vnode, hooks, ns, nextSibling)
|
|
default: return createElement(parent, vnode, hooks, ns, nextSibling)
|
|
}
|
|
}
|
|
else return createComponent(parent, vnode, hooks, ns, nextSibling)
|
|
}
|
|
function createText(parent, vnode, nextSibling) {
|
|
vnode.dom = $doc.createTextNode(vnode.children)
|
|
insertNode(parent, vnode.dom, nextSibling)
|
|
return vnode.dom
|
|
}
|
|
function createHTML(parent, vnode, nextSibling) {
|
|
var match = vnode.children.match(/^\s*?<(\w+)/im) || []
|
|
var parent1 = {caption: "table", thead: "table", tbody: "table", tfoot: "table", tr: "tbody", th: "tr", td: "tr", colgroup: "table", col: "colgroup"}[match[1]] || "div"
|
|
var temp = $doc.createElement(parent1)
|
|
|
|
temp.innerHTML = vnode.children
|
|
vnode.dom = temp.firstChild
|
|
vnode.domSize = temp.childNodes.length
|
|
var fragment = $doc.createDocumentFragment()
|
|
var child
|
|
while (child = temp.firstChild) {
|
|
fragment.appendChild(child)
|
|
}
|
|
insertNode(parent, fragment, nextSibling)
|
|
return fragment
|
|
}
|
|
function createFragment(parent, vnode, hooks, ns, nextSibling) {
|
|
var fragment = $doc.createDocumentFragment()
|
|
if (vnode.children != null) {
|
|
var children = vnode.children
|
|
createNodes(fragment, children, 0, children.length, hooks, null, ns)
|
|
}
|
|
vnode.dom = fragment.firstChild
|
|
vnode.domSize = fragment.childNodes.length
|
|
insertNode(parent, fragment, nextSibling)
|
|
return fragment
|
|
}
|
|
function createElement(parent, vnode, hooks, ns, nextSibling) {
|
|
var tag = vnode.tag
|
|
var attrs = vnode.attrs
|
|
var is = attrs && attrs.is
|
|
|
|
ns = getNameSpace(vnode) || ns
|
|
|
|
var element = ns ?
|
|
is ? $doc.createElementNS(ns, tag, {is: is}) : $doc.createElementNS(ns, tag) :
|
|
is ? $doc.createElement(tag, {is: is}) : $doc.createElement(tag)
|
|
vnode.dom = element
|
|
|
|
if (attrs != null) {
|
|
setAttrs(vnode, attrs, ns)
|
|
}
|
|
|
|
insertNode(parent, element, nextSibling)
|
|
|
|
if (vnode.attrs != null && vnode.attrs.contenteditable != null) {
|
|
setContentEditable(vnode)
|
|
}
|
|
else {
|
|
if (vnode.text != null) {
|
|
if (vnode.text !== "") element.textContent = vnode.text
|
|
else vnode.children = [Vnode("#", undefined, undefined, vnode.text, undefined, undefined)]
|
|
}
|
|
if (vnode.children != null) {
|
|
var children = vnode.children
|
|
createNodes(element, children, 0, children.length, hooks, null, ns)
|
|
setLateAttrs(vnode)
|
|
}
|
|
}
|
|
return element
|
|
}
|
|
function initComponent(vnode, hooks) {
|
|
var sentinel
|
|
if (typeof vnode.tag.view === "function") {
|
|
vnode.state = Object.create(vnode.tag)
|
|
sentinel = vnode.state.view
|
|
if (sentinel.$$reentrantLock$$ != null) return $emptyFragment
|
|
sentinel.$$reentrantLock$$ = true
|
|
} else {
|
|
vnode.state = void 0
|
|
sentinel = vnode.tag
|
|
if (sentinel.$$reentrantLock$$ != null) return $emptyFragment
|
|
sentinel.$$reentrantLock$$ = true
|
|
vnode.state = (vnode.tag.prototype != null && typeof vnode.tag.prototype.view === "function") ? new vnode.tag(vnode) : vnode.tag(vnode)
|
|
}
|
|
if (vnode.attrs != null) initLifecycle(vnode.attrs, vnode, hooks)
|
|
initLifecycle(vnode.state, vnode, hooks)
|
|
vnode.instance = Vnode.normalize(callHook.call(vnode.state.view, vnode))
|
|
if (vnode.instance === vnode) throw Error("A view cannot return the vnode it received as argument")
|
|
sentinel.$$reentrantLock$$ = null
|
|
}
|
|
function createComponent(parent, vnode, hooks, ns, nextSibling) {
|
|
initComponent(vnode, hooks)
|
|
if (vnode.instance != null) {
|
|
var element = createNode(parent, vnode.instance, hooks, ns, nextSibling)
|
|
vnode.dom = vnode.instance.dom
|
|
vnode.domSize = vnode.dom != null ? vnode.instance.domSize : 0
|
|
insertNode(parent, element, nextSibling)
|
|
return element
|
|
}
|
|
else {
|
|
vnode.domSize = 0
|
|
return $emptyFragment
|
|
}
|
|
}
|
|
|
|
//update
|
|
function updateNodes(parent, old, vnodes, recyclingParent, hooks, nextSibling, ns) {
|
|
if (old === vnodes && !recyclingParent || old == null && vnodes == null) return
|
|
else if (old == null) createNodes(parent, vnodes, 0, vnodes.length, hooks, nextSibling, ns)
|
|
else if (vnodes == null) removeNodes(old, 0, old.length, vnodes, recyclingParent)
|
|
else {
|
|
var start = 0, commonLength = Math.min(old.length, vnodes.length), originalOldLength = old.length, hasPool = false, isUnkeyed
|
|
for(; start < commonLength; start++) {
|
|
if (old[start] != null) {
|
|
isUnkeyed = old[start].key == null
|
|
break
|
|
}
|
|
if (vnodes[start] != null) {
|
|
isUnkeyed = vnodes[start].key == null
|
|
break
|
|
}
|
|
}
|
|
if (isUnkeyed && originalOldLength === vnodes.length) {
|
|
// treat it as a tuple, no pool here
|
|
for (; start < originalOldLength; start++) {
|
|
if (old[start] === vnodes[start] && !recyclingParent || old[start] == null && vnodes[start] == null) continue
|
|
else if (old[start] == null) createNode(parent, vnodes[start], hooks, ns, getNextSibling(old, start + 1, originalOldLength, nextSibling))
|
|
else if (vnodes[start] == null) removeNodes(old, start, start + 1, vnodes, recyclingParent)
|
|
else updateNode(parent, old[start], vnodes[start], hooks, getNextSibling(old, start + 1, originalOldLength, nextSibling), recyclingParent, ns)
|
|
}
|
|
return
|
|
}
|
|
|
|
if (isRecyclable(old, vnodes)) {
|
|
hasPool = true
|
|
old = old.concat(old.pool)
|
|
}
|
|
|
|
var oldStart = start, oldEnd = old.length - 1, end = vnodes.length - 1, map, o, v, oFromPool
|
|
|
|
while (oldEnd >= oldStart && end >= start) {
|
|
o = old[oldStart]
|
|
v = vnodes[start]
|
|
oFromPool = hasPool && oldStart >= originalOldLength
|
|
if (o === v && !oFromPool && !recyclingParent || o == null && v == null) oldStart++, start++
|
|
else if (o == null) {
|
|
if (isUnkeyed) {
|
|
createNode(parent, vnodes[start], hooks, ns, getNextSibling(old, ++start, originalOldLength, nextSibling))
|
|
}
|
|
oldStart++
|
|
} else if (v == null) {
|
|
if (isUnkeyed){
|
|
removeNodes(old, start, start + 1, vnodes, recyclingParent)
|
|
oldStart++
|
|
}
|
|
start++
|
|
} else if (o.key === v.key) {
|
|
oldStart++, start++
|
|
updateNode(parent, o, v, hooks, getNextSibling(old, oldStart, originalOldLength, nextSibling), oFromPool || recyclingParent, ns)
|
|
if (oFromPool && o.tag === v.tag) insertNode(parent, toFragment(v), nextSibling)
|
|
} else {
|
|
o = old[oldEnd]
|
|
oFromPool = hasPool && oldEnd >= originalOldLength
|
|
if (o === v && !oFromPool && !recyclingParent) oldEnd--, start++
|
|
else if (o == null) oldEnd--
|
|
else if (v == null) start++
|
|
else if (o.key === v.key) {
|
|
updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, originalOldLength, nextSibling), oFromPool || recyclingParent, ns)
|
|
if (oFromPool && o.tag === v.tag || start < end) insertNode(parent, toFragment(v), getNextSibling(old, oldStart, originalOldLength, nextSibling))
|
|
oldEnd--, start++
|
|
}
|
|
else break
|
|
}
|
|
}
|
|
while (oldEnd >= oldStart && end >= start) {
|
|
o = old[oldEnd]
|
|
v = vnodes[end]
|
|
oFromPool = hasPool && oldEnd >= originalOldLength
|
|
if (o === v && !oFromPool && !recyclingParent) oldEnd--, end--
|
|
else if (o == null) oldEnd--
|
|
else if (v == null) end--
|
|
else if (o.key === v.key) {
|
|
updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, originalOldLength, nextSibling), oFromPool || recyclingParent, ns)
|
|
if (oFromPool && o.tag === v.tag) insertNode(parent, toFragment(v), nextSibling)
|
|
if (o.dom != null) nextSibling = o.dom
|
|
oldEnd--, end--
|
|
} else {
|
|
if (!map) map = getKeyMap(old, oldEnd)
|
|
if (v != null) {
|
|
var oldIndex = map[v.key]
|
|
if (oldIndex != null) {
|
|
o = old[oldIndex]
|
|
oFromPool = hasPool && oldIndex >= originalOldLength
|
|
updateNode(parent, o, v, hooks, getNextSibling(old, oldEnd + 1, originalOldLength, nextSibling), oFromPool || recyclingParent, ns)
|
|
insertNode(parent, toFragment(v), nextSibling)
|
|
o.skip = true
|
|
if (o.dom != null) nextSibling = o.dom
|
|
} else {
|
|
var dom = createNode(parent, v, hooks, ns, nextSibling)
|
|
nextSibling = dom
|
|
}
|
|
}
|
|
end--
|
|
}
|
|
if (end < start) break
|
|
}
|
|
createNodes(parent, vnodes, start, end + 1, hooks, nextSibling, ns)
|
|
removeNodes(old, oldStart, Math.min(oldEnd + 1, originalOldLength), vnodes, recyclingParent)
|
|
if (hasPool) {
|
|
var limit = Math.max(oldStart, originalOldLength)
|
|
for (; oldEnd >= limit; oldEnd--) {
|
|
if (old[oldEnd].skip) old[oldEnd].skip = false
|
|
else addToPool(old[oldEnd], vnodes)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
function updateNode(parent, old, vnode, hooks, nextSibling, recycling, ns) {
|
|
var oldTag = old.tag, tag = vnode.tag
|
|
if (oldTag === tag) {
|
|
vnode.state = old.state
|
|
vnode.events = old.events
|
|
if (!recycling && shouldNotUpdate(vnode, old)) return
|
|
if (typeof oldTag === "string") {
|
|
if (vnode.attrs != null) {
|
|
if (recycling) {
|
|
vnode.state = {}
|
|
initLifecycle(vnode.attrs, vnode, hooks)
|
|
}
|
|
else updateLifecycle(vnode.attrs, vnode, hooks)
|
|
}
|
|
switch (oldTag) {
|
|
case "#": updateText(old, vnode); break
|
|
case "<": updateHTML(parent, old, vnode, nextSibling); break
|
|
case "[": updateFragment(parent, old, vnode, recycling, hooks, nextSibling, ns); break
|
|
default: updateElement(old, vnode, recycling, hooks, ns)
|
|
}
|
|
}
|
|
else updateComponent(parent, old, vnode, hooks, nextSibling, recycling, ns)
|
|
}
|
|
else {
|
|
removeNode(old, null, recycling)
|
|
createNode(parent, vnode, hooks, ns, nextSibling)
|
|
}
|
|
}
|
|
function updateText(old, vnode) {
|
|
if (old.children.toString() !== vnode.children.toString()) {
|
|
old.dom.nodeValue = vnode.children
|
|
}
|
|
vnode.dom = old.dom
|
|
}
|
|
function updateHTML(parent, old, vnode, nextSibling) {
|
|
if (old.children !== vnode.children) {
|
|
toFragment(old)
|
|
createHTML(parent, vnode, nextSibling)
|
|
}
|
|
else vnode.dom = old.dom, vnode.domSize = old.domSize
|
|
}
|
|
function updateFragment(parent, old, vnode, recycling, hooks, nextSibling, ns) {
|
|
updateNodes(parent, old.children, vnode.children, recycling, hooks, nextSibling, ns)
|
|
var domSize = 0, children = vnode.children
|
|
vnode.dom = null
|
|
if (children != null) {
|
|
for (var i = 0; i < children.length; i++) {
|
|
var child = children[i]
|
|
if (child != null && child.dom != null) {
|
|
if (vnode.dom == null) vnode.dom = child.dom
|
|
domSize += child.domSize || 1
|
|
}
|
|
}
|
|
if (domSize !== 1) vnode.domSize = domSize
|
|
}
|
|
}
|
|
function updateElement(old, vnode, recycling, hooks, ns) {
|
|
var element = vnode.dom = old.dom
|
|
ns = getNameSpace(vnode) || ns
|
|
|
|
if (vnode.tag === "textarea") {
|
|
if (vnode.attrs == null) vnode.attrs = {}
|
|
if (vnode.text != null) {
|
|
vnode.attrs.value = vnode.text //FIXME handle multiple children
|
|
vnode.text = undefined
|
|
}
|
|
}
|
|
updateAttrs(vnode, old.attrs, vnode.attrs, ns)
|
|
if (vnode.attrs != null && vnode.attrs.contenteditable != null) {
|
|
setContentEditable(vnode)
|
|
}
|
|
else if (old.text != null && vnode.text != null && vnode.text !== "") {
|
|
if (old.text.toString() !== vnode.text.toString()) old.dom.firstChild.nodeValue = vnode.text
|
|
}
|
|
else {
|
|
if (old.text != null) old.children = [Vnode("#", undefined, undefined, old.text, undefined, old.dom.firstChild)]
|
|
if (vnode.text != null) vnode.children = [Vnode("#", undefined, undefined, vnode.text, undefined, undefined)]
|
|
updateNodes(element, old.children, vnode.children, recycling, hooks, null, ns)
|
|
}
|
|
}
|
|
function updateComponent(parent, old, vnode, hooks, nextSibling, recycling, ns) {
|
|
if (recycling) {
|
|
initComponent(vnode, hooks)
|
|
} else {
|
|
vnode.instance = Vnode.normalize(callHook.call(vnode.state.view, vnode))
|
|
if (vnode.instance === vnode) throw Error("A view cannot return the vnode it received as argument")
|
|
if (vnode.attrs != null) updateLifecycle(vnode.attrs, vnode, hooks)
|
|
updateLifecycle(vnode.state, vnode, hooks)
|
|
}
|
|
if (vnode.instance != null) {
|
|
if (old.instance == null) createNode(parent, vnode.instance, hooks, ns, nextSibling)
|
|
else updateNode(parent, old.instance, vnode.instance, hooks, nextSibling, recycling, ns)
|
|
vnode.dom = vnode.instance.dom
|
|
vnode.domSize = vnode.instance.domSize
|
|
}
|
|
else if (old.instance != null) {
|
|
removeNode(old.instance, null, recycling)
|
|
vnode.dom = undefined
|
|
vnode.domSize = 0
|
|
}
|
|
else {
|
|
vnode.dom = old.dom
|
|
vnode.domSize = old.domSize
|
|
}
|
|
}
|
|
function isRecyclable(old, vnodes) {
|
|
if (old.pool != null && Math.abs(old.pool.length - vnodes.length) <= Math.abs(old.length - vnodes.length)) {
|
|
var oldChildrenLength = old[0] && old[0].children && old[0].children.length || 0
|
|
var poolChildrenLength = old.pool[0] && old.pool[0].children && old.pool[0].children.length || 0
|
|
var vnodesChildrenLength = vnodes[0] && vnodes[0].children && vnodes[0].children.length || 0
|
|
if (Math.abs(poolChildrenLength - vnodesChildrenLength) <= Math.abs(oldChildrenLength - vnodesChildrenLength)) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
function getKeyMap(vnodes, end) {
|
|
var map = {}, i = 0
|
|
for (var i = 0; i < end; i++) {
|
|
var vnode = vnodes[i]
|
|
if (vnode != null) {
|
|
var key = vnode.key
|
|
if (key != null) map[key] = i
|
|
}
|
|
}
|
|
return map
|
|
}
|
|
function toFragment(vnode) {
|
|
var count = vnode.domSize
|
|
if (count != null || vnode.dom == null) {
|
|
var fragment = $doc.createDocumentFragment()
|
|
if (count > 0) {
|
|
var dom = vnode.dom
|
|
while (--count) fragment.appendChild(dom.nextSibling)
|
|
fragment.insertBefore(dom, fragment.firstChild)
|
|
}
|
|
return fragment
|
|
}
|
|
else return vnode.dom
|
|
}
|
|
function getNextSibling(vnodes, i, limit, nextSibling) {
|
|
for (; i < limit; i++) {
|
|
if (vnodes[i] != null && vnodes[i].dom != null) return vnodes[i].dom
|
|
}
|
|
return nextSibling
|
|
}
|
|
|
|
function insertNode(parent, dom, nextSibling) {
|
|
if (nextSibling) parent.insertBefore(dom, nextSibling)
|
|
else parent.appendChild(dom)
|
|
}
|
|
|
|
function setContentEditable(vnode) {
|
|
var children = vnode.children
|
|
if (children != null && children.length === 1 && children[0].tag === "<") {
|
|
var content = children[0].children
|
|
if (vnode.dom.innerHTML !== content) vnode.dom.innerHTML = content
|
|
}
|
|
else if (vnode.text != null || children != null && children.length !== 0) throw new Error("Child node of a contenteditable must be trusted")
|
|
}
|
|
|
|
//remove
|
|
function removeNodes(vnodes, start, end, context, recycling) {
|
|
for (var i = start; i < end; i++) {
|
|
var vnode = vnodes[i]
|
|
if (vnode != null) {
|
|
if (vnode.skip) vnode.skip = false
|
|
else removeNode(vnode, context, recycling)
|
|
}
|
|
}
|
|
}
|
|
function removeNode(vnode, context, recycling) {
|
|
var expected = 1, called = 0
|
|
var original = vnode.state
|
|
if (!recycling) {
|
|
if (vnode.attrs && typeof vnode.attrs.onbeforeremove === "function") {
|
|
var result = callHook.call(vnode.attrs.onbeforeremove, vnode)
|
|
if (result != null && typeof result.then === "function") {
|
|
expected++
|
|
result.then(continuation, continuation)
|
|
}
|
|
}
|
|
if (typeof vnode.tag !== "string" && typeof vnode.state.onbeforeremove === "function") {
|
|
var result = callHook.call(vnode.state.onbeforeremove, vnode)
|
|
if (result != null && typeof result.then === "function") {
|
|
expected++
|
|
result.then(continuation, continuation)
|
|
}
|
|
}
|
|
}
|
|
continuation()
|
|
function continuation() {
|
|
if (++called === expected) {
|
|
if (!recycling) {
|
|
checkState(vnode, original)
|
|
onremove(vnode)
|
|
}
|
|
if (vnode.dom) {
|
|
var count = vnode.domSize || 1
|
|
if (count > 1) {
|
|
var dom = vnode.dom
|
|
while (--count) {
|
|
removeNodeFromDOM(dom.nextSibling)
|
|
}
|
|
}
|
|
removeNodeFromDOM(vnode.dom)
|
|
addToPool(vnode, context)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
function removeNodeFromDOM(node) {
|
|
var parent = node.parentNode
|
|
if (parent != null) parent.removeChild(node)
|
|
}
|
|
function addToPool(vnode, context) {
|
|
if (context != null && vnode.domSize == null && !hasIntegrationMethods(vnode.attrs) && typeof vnode.tag === "string") { //TODO test custom elements
|
|
if (!context.pool) context.pool = [vnode]
|
|
else context.pool.push(vnode)
|
|
}
|
|
}
|
|
function onremove(vnode) {
|
|
if (vnode.attrs && typeof vnode.attrs.onremove === "function") callHook.call(vnode.attrs.onremove, vnode)
|
|
if (typeof vnode.tag !== "string") {
|
|
if (typeof vnode.state.onremove === "function") callHook.call(vnode.state.onremove, vnode)
|
|
if (vnode.instance != null) onremove(vnode.instance)
|
|
} else {
|
|
var children = vnode.children
|
|
if (Array.isArray(children)) {
|
|
for (var i = 0; i < children.length; i++) {
|
|
var child = children[i]
|
|
if (child != null) onremove(child)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//attrs
|
|
function setAttrs(vnode, attrs, ns) {
|
|
for (var key in attrs) {
|
|
setAttr(vnode, key, null, attrs[key], ns)
|
|
}
|
|
}
|
|
function setAttr(vnode, key, old, value, ns) {
|
|
if (key === "key" || key === "is" || isLifecycleMethod(key)) return
|
|
if (key[0] === "o" && key[1] === "n") return updateEvent(vnode, key, value)
|
|
if ((old === value && !isFormAttribute(vnode, key)) && typeof value !== "object" || value === undefined) return
|
|
var element = vnode.dom
|
|
if (key.slice(0, 6) === "xlink:") element.setAttributeNS("http://www.w3.org/1999/xlink", key, value)
|
|
else if (key === "style") updateStyle(element, old, value)
|
|
else if (key in element && !isAttribute(key) && ns === undefined && !isCustomElement(vnode)) {
|
|
if (key === "value") {
|
|
var normalized = "" + value // eslint-disable-line no-implicit-coercion
|
|
//setting input[value] to same value by typing on focused element moves cursor to end in Chrome
|
|
if ((vnode.tag === "input" || vnode.tag === "textarea") && vnode.dom.value === normalized && vnode.dom === $doc.activeElement) return
|
|
//setting select[value] to same value while having select open blinks select dropdown in Chrome
|
|
if (vnode.tag === "select") {
|
|
if (value === null) {
|
|
if (vnode.dom.selectedIndex === -1 && vnode.dom === $doc.activeElement) return
|
|
} else {
|
|
if (old !== null && vnode.dom.value === normalized && vnode.dom === $doc.activeElement) return
|
|
}
|
|
}
|
|
//setting option[value] to same value while having select open blinks select dropdown in Chrome
|
|
if (vnode.tag === "option" && old != null && vnode.dom.value === normalized) return
|
|
}
|
|
// If you assign an input type that is not supported by IE 11 with an assignment expression, an error will occur.
|
|
if (vnode.tag === "input" && key === "type") {
|
|
element.setAttribute(key, value)
|
|
return
|
|
}
|
|
element[key] = value
|
|
}
|
|
else {
|
|
if (typeof value === "boolean") {
|
|
if (value) element.setAttribute(key, "")
|
|
else element.removeAttribute(key)
|
|
}
|
|
else element.setAttribute(key === "className" ? "class" : key, value)
|
|
}
|
|
}
|
|
function setLateAttrs(vnode) {
|
|
var attrs = vnode.attrs
|
|
if (vnode.tag === "select" && attrs != null) {
|
|
if ("value" in attrs) setAttr(vnode, "value", null, attrs.value, undefined)
|
|
if ("selectedIndex" in attrs) setAttr(vnode, "selectedIndex", null, attrs.selectedIndex, undefined)
|
|
}
|
|
}
|
|
function updateAttrs(vnode, old, attrs, ns) {
|
|
if (attrs != null) {
|
|
for (var key in attrs) {
|
|
setAttr(vnode, key, old && old[key], attrs[key], ns)
|
|
}
|
|
}
|
|
if (old != null) {
|
|
for (var key in old) {
|
|
if (attrs == null || !(key in attrs)) {
|
|
if (key === "className") key = "class"
|
|
if (key[0] === "o" && key[1] === "n" && !isLifecycleMethod(key)) updateEvent(vnode, key, undefined)
|
|
else if (key !== "key") vnode.dom.removeAttribute(key)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
function isFormAttribute(vnode, attr) {
|
|
return attr === "value" || attr === "checked" || attr === "selectedIndex" || attr === "selected" && vnode.dom === $doc.activeElement || vnode.dom.parentNode === $doc.activeElement
|
|
}
|
|
function isLifecycleMethod(attr) {
|
|
return attr === "oninit" || attr === "oncreate" || attr === "onupdate" || attr === "onremove" || attr === "onbeforeremove" || attr === "onbeforeupdate"
|
|
}
|
|
function isAttribute(attr) {
|
|
return attr === "href" || attr === "list" || attr === "form" || attr === "width" || attr === "height"// || attr === "type"
|
|
}
|
|
function isCustomElement(vnode){
|
|
return vnode.attrs.is || vnode.tag.indexOf("-") > -1
|
|
}
|
|
function hasIntegrationMethods(source) {
|
|
return source != null && (source.oncreate || source.onupdate || source.onbeforeremove || source.onremove)
|
|
}
|
|
|
|
//style
|
|
function updateStyle(element, old, style) {
|
|
if (old != null && style != null && typeof old === "object" && typeof style === "object" && style !== old) {
|
|
// Both old & new are (different) objects.
|
|
// Update style properties that have changed
|
|
for (var key in style) {
|
|
if (style[key] !== old[key]) element.style[key] = style[key]
|
|
}
|
|
// Remove style properties that no longer exist
|
|
for (var key in old) {
|
|
if (!(key in style)) element.style[key] = ""
|
|
}
|
|
return
|
|
}
|
|
if (old === style) element.style.cssText = "", old = null
|
|
if (style == null) element.style.cssText = ""
|
|
else if (typeof style === "string") element.style.cssText = style
|
|
else {
|
|
if (typeof old === "string") element.style.cssText = ""
|
|
for (var key in style) {
|
|
element.style[key] = style[key]
|
|
}
|
|
}
|
|
}
|
|
|
|
// Here's an explanation of how this works:
|
|
// 1. The event names are always (by design) prefixed by `on`.
|
|
// 2. The EventListener interface accepts either a function or an object
|
|
// with a `handleEvent` method.
|
|
// 3. The object does not inherit from `Object.prototype`, to avoid
|
|
// any potential interference with that (e.g. setters).
|
|
// 4. The event name is remapped to the handler before calling it.
|
|
// 5. In function-based event handlers, `ev.target === this`. We replicate
|
|
// that below.
|
|
function EventDict() {}
|
|
EventDict.prototype = Object.create(null)
|
|
EventDict.prototype.handleEvent = function (ev) {
|
|
var handler = this["on" + ev.type]
|
|
if (typeof handler === "function") handler.call(ev.target, ev)
|
|
else if (typeof handler.handleEvent === "function") handler.handleEvent(ev)
|
|
if (typeof onevent === "function") onevent.call(ev.target, ev)
|
|
}
|
|
|
|
//event
|
|
function updateEvent(vnode, key, value) {
|
|
if (vnode.events != null) {
|
|
if (vnode.events[key] === value) return
|
|
if (value != null && (typeof value === "function" || typeof value === "object")) {
|
|
if (vnode.events[key] == null) vnode.dom.addEventListener(key.slice(2), vnode.events, false)
|
|
vnode.events[key] = value
|
|
} else {
|
|
if (vnode.events[key] != null) vnode.dom.removeEventListener(key.slice(2), vnode.events, false)
|
|
vnode.events[key] = undefined
|
|
}
|
|
} else if (value != null && (typeof value === "function" || typeof value === "object")) {
|
|
vnode.events = new EventDict()
|
|
vnode.dom.addEventListener(key.slice(2), vnode.events, false)
|
|
vnode.events[key] = value
|
|
}
|
|
}
|
|
|
|
//lifecycle
|
|
function initLifecycle(source, vnode, hooks) {
|
|
if (typeof source.oninit === "function") callHook.call(source.oninit, vnode)
|
|
if (typeof source.oncreate === "function") hooks.push(callHook.bind(source.oncreate, vnode))
|
|
}
|
|
function updateLifecycle(source, vnode, hooks) {
|
|
if (typeof source.onupdate === "function") hooks.push(callHook.bind(source.onupdate, vnode))
|
|
}
|
|
function shouldNotUpdate(vnode, old) {
|
|
var forceVnodeUpdate, forceComponentUpdate
|
|
if (vnode.attrs != null && typeof vnode.attrs.onbeforeupdate === "function") {
|
|
forceVnodeUpdate = callHook.call(vnode.attrs.onbeforeupdate, vnode, old)
|
|
}
|
|
if (typeof vnode.tag !== "string" && typeof vnode.state.onbeforeupdate === "function") {
|
|
forceComponentUpdate = callHook.call(vnode.state.onbeforeupdate, vnode, old)
|
|
}
|
|
if (!(forceVnodeUpdate === undefined && forceComponentUpdate === undefined) && !forceVnodeUpdate && !forceComponentUpdate) {
|
|
vnode.dom = old.dom
|
|
vnode.domSize = old.domSize
|
|
vnode.instance = old.instance
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
function render(dom, vnodes) {
|
|
if (!dom) throw new Error("Ensure the DOM element being passed to m.route/m.mount/m.render is not undefined.")
|
|
var hooks = []
|
|
var active = $doc.activeElement
|
|
var namespace = dom.namespaceURI
|
|
|
|
// First time rendering into a node clears it out
|
|
if (dom.vnodes == null) dom.textContent = ""
|
|
|
|
if (!Array.isArray(vnodes)) vnodes = [vnodes]
|
|
updateNodes(dom, dom.vnodes, Vnode.normalizeChildren(vnodes), false, hooks, null, namespace === "http://www.w3.org/1999/xhtml" ? undefined : namespace)
|
|
dom.vnodes = vnodes
|
|
// document.activeElement can return null in IE https://developer.mozilla.org/en-US/docs/Web/API/Document/activeElement
|
|
if (active != null && $doc.activeElement !== active) active.focus()
|
|
for (var i = 0; i < hooks.length; i++) hooks[i]()
|
|
}
|
|
|
|
return {render: render, setEventCallback: setEventCallback}
|
|
}
|