forked from enviPath/enviPy
Current Dev State
This commit is contained in:
Tim Lorsbach
964
static/js/ketcher2/node_modules/preact/dist/preact.dev.js
generated
vendored
Normal file
964
static/js/ketcher2/node_modules/preact/dist/preact.dev.js
generated
vendored
Normal file
@ -0,0 +1,964 @@
|
||||
(function () {
|
||||
'use strict';
|
||||
|
||||
/** Virtual DOM Node */
|
||||
function VNode() {}
|
||||
|
||||
/** Global options
|
||||
* @public
|
||||
* @namespace options {Object}
|
||||
*/
|
||||
var options = {
|
||||
|
||||
/** If `true`, `prop` changes trigger synchronous component updates.
|
||||
* @name syncComponentUpdates
|
||||
* @type Boolean
|
||||
* @default true
|
||||
*/
|
||||
//syncComponentUpdates: true,
|
||||
|
||||
/** Processes all created VNodes.
|
||||
* @param {VNode} vnode A newly-created VNode to normalize/process
|
||||
*/
|
||||
//vnode(vnode) { }
|
||||
|
||||
/** Hook invoked after a component is mounted. */
|
||||
// afterMount(component) { }
|
||||
|
||||
/** Hook invoked after the DOM is updated with a component's latest render. */
|
||||
// afterUpdate(component) { }
|
||||
|
||||
/** Hook invoked immediately before a component is unmounted. */
|
||||
// beforeUnmount(component) { }
|
||||
};
|
||||
|
||||
var stack = [];
|
||||
|
||||
var EMPTY_CHILDREN = [];
|
||||
|
||||
/** JSX/hyperscript reviver
|
||||
* Benchmarks: https://esbench.com/bench/57ee8f8e330ab09900a1a1a0
|
||||
* @see http://jasonformat.com/wtf-is-jsx
|
||||
* @public
|
||||
*/
|
||||
|
||||
function h(nodeName, attributes) {
|
||||
var children = EMPTY_CHILDREN,
|
||||
lastSimple,
|
||||
child,
|
||||
simple,
|
||||
i;
|
||||
for (i = arguments.length; i-- > 2;) {
|
||||
stack.push(arguments[i]);
|
||||
}
|
||||
if (attributes && attributes.children != null) {
|
||||
if (!stack.length) stack.push(attributes.children);
|
||||
delete attributes.children;
|
||||
}
|
||||
while (stack.length) {
|
||||
if ((child = stack.pop()) && child.pop !== undefined) {
|
||||
for (i = child.length; i--;) stack.push(child[i]);
|
||||
} else {
|
||||
if (child === true || child === false) child = null;
|
||||
|
||||
if (simple = typeof nodeName !== 'function') {
|
||||
if (child == null) child = '';else if (typeof child === 'number') child = String(child);else if (typeof child !== 'string') simple = false;
|
||||
}
|
||||
|
||||
if (simple && lastSimple) {
|
||||
children[children.length - 1] += child;
|
||||
} else if (children === EMPTY_CHILDREN) {
|
||||
children = [child];
|
||||
} else {
|
||||
children.push(child);
|
||||
}
|
||||
|
||||
lastSimple = simple;
|
||||
}
|
||||
}
|
||||
|
||||
var p = new VNode();
|
||||
p.nodeName = nodeName;
|
||||
p.children = children;
|
||||
p.attributes = attributes == null ? undefined : attributes;
|
||||
p.key = attributes == null ? undefined : attributes.key;
|
||||
|
||||
// if a "vnode hook" is defined, pass every created VNode to it
|
||||
if (options.vnode !== undefined) options.vnode(p);
|
||||
|
||||
return p;
|
||||
}
|
||||
|
||||
/** Copy own-properties from `props` onto `obj`.
|
||||
* @returns obj
|
||||
* @private
|
||||
*/
|
||||
function extend(obj, props) {
|
||||
for (var i in props) {
|
||||
obj[i] = props[i];
|
||||
}return obj;
|
||||
}
|
||||
|
||||
function cloneElement(vnode, props) {
|
||||
return h(vnode.nodeName, extend(extend({}, vnode.attributes), props), arguments.length > 2 ? [].slice.call(arguments, 2) : vnode.children);
|
||||
}
|
||||
|
||||
// DOM properties that should NOT have "px" added when numeric
|
||||
var IS_NON_DIMENSIONAL = /acit|ex(?:s|g|n|p|$)|rph|ows|mnc|ntw|ine[ch]|zoo|^ord/i;
|
||||
|
||||
/** Managed queue of dirty components to be re-rendered */
|
||||
|
||||
var items = [];
|
||||
|
||||
function enqueueRender(component) {
|
||||
if (!component._dirty && (component._dirty = true) && items.push(component) == 1) {
|
||||
(options.debounceRendering || setTimeout)(rerender);
|
||||
}
|
||||
}
|
||||
|
||||
function rerender() {
|
||||
var p,
|
||||
list = items;
|
||||
items = [];
|
||||
while (p = list.pop()) {
|
||||
if (p._dirty) renderComponent(p);
|
||||
}
|
||||
}
|
||||
|
||||
/** Check if two nodes are equivalent.
|
||||
* @param {Element} node
|
||||
* @param {VNode} vnode
|
||||
* @private
|
||||
*/
|
||||
|
||||
function isSameNodeType(node, vnode, hydrating) {
|
||||
if (typeof vnode === 'string' || typeof vnode === 'number') {
|
||||
return node.splitText !== undefined;
|
||||
}
|
||||
if (typeof vnode.nodeName === 'string') {
|
||||
return !node._componentConstructor && isNamedNode(node, vnode.nodeName);
|
||||
}
|
||||
return hydrating || node._componentConstructor === vnode.nodeName;
|
||||
}
|
||||
|
||||
/** Check if an Element has a given normalized name.
|
||||
* @param {Element} node
|
||||
* @param {String} nodeName
|
||||
*/
|
||||
|
||||
function isNamedNode(node, nodeName) {
|
||||
return node.normalizedNodeName === nodeName || node.nodeName.toLowerCase() === nodeName.toLowerCase();
|
||||
}
|
||||
|
||||
/**
|
||||
* Reconstruct Component-style `props` from a VNode.
|
||||
* Ensures default/fallback values from `defaultProps`:
|
||||
* Own-properties of `defaultProps` not present in `vnode.attributes` are added.
|
||||
* @param {VNode} vnode
|
||||
* @returns {Object} props
|
||||
*/
|
||||
|
||||
function getNodeProps(vnode) {
|
||||
var props = extend({}, vnode.attributes);
|
||||
props.children = vnode.children;
|
||||
|
||||
var defaultProps = vnode.nodeName.defaultProps;
|
||||
if (defaultProps !== undefined) {
|
||||
for (var i in defaultProps) {
|
||||
if (props[i] === undefined) {
|
||||
props[i] = defaultProps[i];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return props;
|
||||
}
|
||||
|
||||
/** Create an element with the given nodeName.
|
||||
* @param {String} nodeName
|
||||
* @param {Boolean} [isSvg=false] If `true`, creates an element within the SVG namespace.
|
||||
* @returns {Element} node
|
||||
*/
|
||||
|
||||
function createNode(nodeName, isSvg) {
|
||||
var node = isSvg ? document.createElementNS('http://www.w3.org/2000/svg', nodeName) : document.createElement(nodeName);
|
||||
node.normalizedNodeName = nodeName;
|
||||
return node;
|
||||
}
|
||||
|
||||
/** Remove a child node from its parent if attached.
|
||||
* @param {Element} node The node to remove
|
||||
*/
|
||||
|
||||
function removeNode(node) {
|
||||
if (node.parentNode) node.parentNode.removeChild(node);
|
||||
}
|
||||
|
||||
/** Set a named attribute on the given Node, with special behavior for some names and event handlers.
|
||||
* If `value` is `null`, the attribute/handler will be removed.
|
||||
* @param {Element} node An element to mutate
|
||||
* @param {string} name The name/key to set, such as an event or attribute name
|
||||
* @param {any} old The last value that was set for this name/node pair
|
||||
* @param {any} value An attribute value, such as a function to be used as an event handler
|
||||
* @param {Boolean} isSvg Are we currently diffing inside an svg?
|
||||
* @private
|
||||
*/
|
||||
|
||||
function setAccessor(node, name, old, value, isSvg) {
|
||||
if (name === 'className') name = 'class';
|
||||
|
||||
if (name === 'key') {
|
||||
// ignore
|
||||
} else if (name === 'ref') {
|
||||
if (old) old(null);
|
||||
if (value) value(node);
|
||||
} else if (name === 'class' && !isSvg) {
|
||||
node.className = value || '';
|
||||
} else if (name === 'style') {
|
||||
if (!value || typeof value === 'string' || typeof old === 'string') {
|
||||
node.style.cssText = value || '';
|
||||
}
|
||||
if (value && typeof value === 'object') {
|
||||
if (typeof old !== 'string') {
|
||||
for (var i in old) {
|
||||
if (!(i in value)) node.style[i] = '';
|
||||
}
|
||||
}
|
||||
for (var i in value) {
|
||||
node.style[i] = typeof value[i] === 'number' && IS_NON_DIMENSIONAL.test(i) === false ? value[i] + 'px' : value[i];
|
||||
}
|
||||
}
|
||||
} else if (name === 'dangerouslySetInnerHTML') {
|
||||
if (value) node.innerHTML = value.__html || '';
|
||||
} else if (name[0] == 'o' && name[1] == 'n') {
|
||||
var useCapture = name !== (name = name.replace(/Capture$/, ''));
|
||||
name = name.toLowerCase().substring(2);
|
||||
if (value) {
|
||||
if (!old) node.addEventListener(name, eventProxy, useCapture);
|
||||
} else {
|
||||
node.removeEventListener(name, eventProxy, useCapture);
|
||||
}
|
||||
(node._listeners || (node._listeners = {}))[name] = value;
|
||||
} else if (name !== 'list' && name !== 'type' && !isSvg && name in node) {
|
||||
setProperty(node, name, value == null ? '' : value);
|
||||
if (value == null || value === false) node.removeAttribute(name);
|
||||
} else {
|
||||
var ns = isSvg && name !== (name = name.replace(/^xlink\:?/, ''));
|
||||
if (value == null || value === false) {
|
||||
if (ns) node.removeAttributeNS('http://www.w3.org/1999/xlink', name.toLowerCase());else node.removeAttribute(name);
|
||||
} else if (typeof value !== 'function') {
|
||||
if (ns) node.setAttributeNS('http://www.w3.org/1999/xlink', name.toLowerCase(), value);else node.setAttribute(name, value);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/** Attempt to set a DOM property to the given value.
|
||||
* IE & FF throw for certain property-value combinations.
|
||||
*/
|
||||
function setProperty(node, name, value) {
|
||||
try {
|
||||
node[name] = value;
|
||||
} catch (e) {}
|
||||
}
|
||||
|
||||
/** Proxy an event to hooked event handlers
|
||||
* @private
|
||||
*/
|
||||
function eventProxy(e) {
|
||||
return this._listeners[e.type](options.event && options.event(e) || e);
|
||||
}
|
||||
|
||||
/** Queue of components that have been mounted and are awaiting componentDidMount */
|
||||
var mounts = [];
|
||||
|
||||
/** Diff recursion count, used to track the end of the diff cycle. */
|
||||
var diffLevel = 0;
|
||||
|
||||
/** Global flag indicating if the diff is currently within an SVG */
|
||||
var isSvgMode = false;
|
||||
|
||||
/** Global flag indicating if the diff is performing hydration */
|
||||
var hydrating = false;
|
||||
|
||||
/** Invoke queued componentDidMount lifecycle methods */
|
||||
|
||||
function flushMounts() {
|
||||
var c;
|
||||
while (c = mounts.pop()) {
|
||||
if (options.afterMount) options.afterMount(c);
|
||||
if (c.componentDidMount) c.componentDidMount();
|
||||
}
|
||||
}
|
||||
|
||||
/** Apply differences in a given vnode (and it's deep children) to a real DOM Node.
|
||||
* @param {Element} [dom=null] A DOM node to mutate into the shape of the `vnode`
|
||||
* @param {VNode} vnode A VNode (with descendants forming a tree) representing the desired DOM structure
|
||||
* @returns {Element} dom The created/mutated element
|
||||
* @private
|
||||
*/
|
||||
|
||||
function diff(dom, vnode, context, mountAll, parent, componentRoot) {
|
||||
// diffLevel having been 0 here indicates initial entry into the diff (not a subdiff)
|
||||
if (! diffLevel++) {
|
||||
// when first starting the diff, check if we're diffing an SVG or within an SVG
|
||||
isSvgMode = parent != null && parent.ownerSVGElement !== undefined;
|
||||
|
||||
// hydration is inidicated by the existing element to be diffed not having a prop cache
|
||||
hydrating = dom != null && !('__preactattr_' in dom);
|
||||
}
|
||||
|
||||
var ret = idiff(dom, vnode, context, mountAll, componentRoot);
|
||||
|
||||
// append the element if its a new parent
|
||||
if (parent && ret.parentNode !== parent) parent.appendChild(ret);
|
||||
|
||||
// diffLevel being reduced to 0 means we're exiting the diff
|
||||
if (! --diffLevel) {
|
||||
hydrating = false;
|
||||
// invoke queued componentDidMount lifecycle methods
|
||||
if (!componentRoot) flushMounts();
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/** Internals of `diff()`, separated to allow bypassing diffLevel / mount flushing. */
|
||||
function idiff(dom, vnode, context, mountAll, componentRoot) {
|
||||
var out = dom,
|
||||
prevSvgMode = isSvgMode;
|
||||
|
||||
// empty values (null & undefined) render as empty Text nodes
|
||||
if (vnode == null) vnode = '';
|
||||
|
||||
// Fast case: Strings create/update Text nodes.
|
||||
if (typeof vnode === 'string') {
|
||||
|
||||
// update if it's already a Text node:
|
||||
if (dom && dom.splitText !== undefined && dom.parentNode && (!dom._component || componentRoot)) {
|
||||
if (dom.nodeValue != vnode) {
|
||||
dom.nodeValue = vnode;
|
||||
}
|
||||
} else {
|
||||
// it wasn't a Text node: replace it with one and recycle the old Element
|
||||
out = document.createTextNode(vnode);
|
||||
if (dom) {
|
||||
if (dom.parentNode) dom.parentNode.replaceChild(out, dom);
|
||||
recollectNodeTree(dom, true);
|
||||
}
|
||||
}
|
||||
|
||||
out['__preactattr_'] = true;
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
// If the VNode represents a Component, perform a component diff:
|
||||
if (typeof vnode.nodeName === 'function') {
|
||||
return buildComponentFromVNode(dom, vnode, context, mountAll);
|
||||
}
|
||||
|
||||
// Tracks entering and exiting SVG namespace when descending through the tree.
|
||||
isSvgMode = vnode.nodeName === 'svg' ? true : vnode.nodeName === 'foreignObject' ? false : isSvgMode;
|
||||
|
||||
// If there's no existing element or it's the wrong type, create a new one:
|
||||
if (!dom || !isNamedNode(dom, String(vnode.nodeName))) {
|
||||
out = createNode(String(vnode.nodeName), isSvgMode);
|
||||
|
||||
if (dom) {
|
||||
// move children into the replacement node
|
||||
while (dom.firstChild) out.appendChild(dom.firstChild);
|
||||
|
||||
// if the previous Element was mounted into the DOM, replace it inline
|
||||
if (dom.parentNode) dom.parentNode.replaceChild(out, dom);
|
||||
|
||||
// recycle the old element (skips non-Element node types)
|
||||
recollectNodeTree(dom, true);
|
||||
}
|
||||
}
|
||||
|
||||
var fc = out.firstChild,
|
||||
props = out['__preactattr_'] || (out['__preactattr_'] = {}),
|
||||
vchildren = vnode.children;
|
||||
|
||||
// Optimization: fast-path for elements containing a single TextNode:
|
||||
if (!hydrating && vchildren && vchildren.length === 1 && typeof vchildren[0] === 'string' && fc != null && fc.splitText !== undefined && fc.nextSibling == null) {
|
||||
if (fc.nodeValue != vchildren[0]) {
|
||||
fc.nodeValue = vchildren[0];
|
||||
}
|
||||
}
|
||||
// otherwise, if there are existing or new children, diff them:
|
||||
else if (vchildren && vchildren.length || fc != null) {
|
||||
innerDiffNode(out, vchildren, context, mountAll, hydrating || props.dangerouslySetInnerHTML != null);
|
||||
}
|
||||
|
||||
// Apply attributes/props from VNode to the DOM Element:
|
||||
diffAttributes(out, vnode.attributes, props);
|
||||
|
||||
// restore previous SVG mode: (in case we're exiting an SVG namespace)
|
||||
isSvgMode = prevSvgMode;
|
||||
|
||||
return out;
|
||||
}
|
||||
|
||||
/** Apply child and attribute changes between a VNode and a DOM Node to the DOM.
|
||||
* @param {Element} dom Element whose children should be compared & mutated
|
||||
* @param {Array} vchildren Array of VNodes to compare to `dom.childNodes`
|
||||
* @param {Object} context Implicitly descendant context object (from most recent `getChildContext()`)
|
||||
* @param {Boolean} mountAll
|
||||
* @param {Boolean} isHydrating If `true`, consumes externally created elements similar to hydration
|
||||
*/
|
||||
function innerDiffNode(dom, vchildren, context, mountAll, isHydrating) {
|
||||
var originalChildren = dom.childNodes,
|
||||
children = [],
|
||||
keyed = {},
|
||||
keyedLen = 0,
|
||||
min = 0,
|
||||
len = originalChildren.length,
|
||||
childrenLen = 0,
|
||||
vlen = vchildren ? vchildren.length : 0,
|
||||
j,
|
||||
c,
|
||||
vchild,
|
||||
child;
|
||||
|
||||
// Build up a map of keyed children and an Array of unkeyed children:
|
||||
if (len !== 0) {
|
||||
for (var i = 0; i < len; i++) {
|
||||
var _child = originalChildren[i],
|
||||
props = _child['__preactattr_'],
|
||||
key = vlen && props ? _child._component ? _child._component.__key : props.key : null;
|
||||
if (key != null) {
|
||||
keyedLen++;
|
||||
keyed[key] = _child;
|
||||
} else if (props || (_child.splitText !== undefined ? isHydrating ? _child.nodeValue.trim() : true : isHydrating)) {
|
||||
children[childrenLen++] = _child;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (vlen !== 0) {
|
||||
for (var i = 0; i < vlen; i++) {
|
||||
vchild = vchildren[i];
|
||||
child = null;
|
||||
|
||||
// attempt to find a node based on key matching
|
||||
var key = vchild.key;
|
||||
if (key != null) {
|
||||
if (keyedLen && keyed[key] !== undefined) {
|
||||
child = keyed[key];
|
||||
keyed[key] = undefined;
|
||||
keyedLen--;
|
||||
}
|
||||
}
|
||||
// attempt to pluck a node of the same type from the existing children
|
||||
else if (!child && min < childrenLen) {
|
||||
for (j = min; j < childrenLen; j++) {
|
||||
if (children[j] !== undefined && isSameNodeType(c = children[j], vchild, isHydrating)) {
|
||||
child = c;
|
||||
children[j] = undefined;
|
||||
if (j === childrenLen - 1) childrenLen--;
|
||||
if (j === min) min++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// morph the matched/found/created DOM child to match vchild (deep)
|
||||
child = idiff(child, vchild, context, mountAll);
|
||||
|
||||
if (child && child !== dom) {
|
||||
if (i >= len) {
|
||||
dom.appendChild(child);
|
||||
} else if (child !== originalChildren[i]) {
|
||||
if (child === originalChildren[i + 1]) {
|
||||
removeNode(originalChildren[i]);
|
||||
} else {
|
||||
dom.insertBefore(child, originalChildren[i] || null);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// remove unused keyed children:
|
||||
if (keyedLen) {
|
||||
for (var i in keyed) {
|
||||
if (keyed[i] !== undefined) recollectNodeTree(keyed[i], false);
|
||||
}
|
||||
}
|
||||
|
||||
// remove orphaned unkeyed children:
|
||||
while (min <= childrenLen) {
|
||||
if ((child = children[childrenLen--]) !== undefined) recollectNodeTree(child, false);
|
||||
}
|
||||
}
|
||||
|
||||
/** Recursively recycle (or just unmount) a node an its descendants.
|
||||
* @param {Node} node DOM node to start unmount/removal from
|
||||
* @param {Boolean} [unmountOnly=false] If `true`, only triggers unmount lifecycle, skips removal
|
||||
*/
|
||||
|
||||
function recollectNodeTree(node, unmountOnly) {
|
||||
var component = node._component;
|
||||
if (component) {
|
||||
// if node is owned by a Component, unmount that component (ends up recursing back here)
|
||||
unmountComponent(component);
|
||||
} else {
|
||||
// If the node's VNode had a ref function, invoke it with null here.
|
||||
// (this is part of the React spec, and smart for unsetting references)
|
||||
if (node['__preactattr_'] != null && node['__preactattr_'].ref) node['__preactattr_'].ref(null);
|
||||
|
||||
if (unmountOnly === false || node['__preactattr_'] == null) {
|
||||
removeNode(node);
|
||||
}
|
||||
|
||||
removeChildren(node);
|
||||
}
|
||||
}
|
||||
|
||||
/** Recollect/unmount all children.
|
||||
* - we use .lastChild here because it causes less reflow than .firstChild
|
||||
* - it's also cheaper than accessing the .childNodes Live NodeList
|
||||
*/
|
||||
|
||||
function removeChildren(node) {
|
||||
node = node.lastChild;
|
||||
while (node) {
|
||||
var next = node.previousSibling;
|
||||
recollectNodeTree(node, true);
|
||||
node = next;
|
||||
}
|
||||
}
|
||||
|
||||
/** Apply differences in attributes from a VNode to the given DOM Element.
|
||||
* @param {Element} dom Element with attributes to diff `attrs` against
|
||||
* @param {Object} attrs The desired end-state key-value attribute pairs
|
||||
* @param {Object} old Current/previous attributes (from previous VNode or element's prop cache)
|
||||
*/
|
||||
function diffAttributes(dom, attrs, old) {
|
||||
var name;
|
||||
|
||||
// remove attributes no longer present on the vnode by setting them to undefined
|
||||
for (name in old) {
|
||||
if (!(attrs && attrs[name] != null) && old[name] != null) {
|
||||
setAccessor(dom, name, old[name], old[name] = undefined, isSvgMode);
|
||||
}
|
||||
}
|
||||
|
||||
// add new & update changed attributes
|
||||
for (name in attrs) {
|
||||
if (name !== 'children' && name !== 'innerHTML' && (!(name in old) || attrs[name] !== (name === 'value' || name === 'checked' ? dom[name] : old[name]))) {
|
||||
setAccessor(dom, name, old[name], old[name] = attrs[name], isSvgMode);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/** Retains a pool of Components for re-use, keyed on component name.
|
||||
* Note: since component names are not unique or even necessarily available, these are primarily a form of sharding.
|
||||
* @private
|
||||
*/
|
||||
var components = {};
|
||||
|
||||
/** Reclaim a component for later re-use by the recycler. */
|
||||
|
||||
function collectComponent(component) {
|
||||
var name = component.constructor.name;
|
||||
(components[name] || (components[name] = [])).push(component);
|
||||
}
|
||||
|
||||
/** Create a component. Normalizes differences between PFC's and classful Components. */
|
||||
|
||||
function createComponent(Ctor, props, context) {
|
||||
var list = components[Ctor.name],
|
||||
inst;
|
||||
|
||||
if (Ctor.prototype && Ctor.prototype.render) {
|
||||
inst = new Ctor(props, context);
|
||||
Component.call(inst, props, context);
|
||||
} else {
|
||||
inst = new Component(props, context);
|
||||
inst.constructor = Ctor;
|
||||
inst.render = doRender;
|
||||
}
|
||||
|
||||
if (list) {
|
||||
for (var i = list.length; i--;) {
|
||||
if (list[i].constructor === Ctor) {
|
||||
inst.nextBase = list[i].nextBase;
|
||||
list.splice(i, 1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
return inst;
|
||||
}
|
||||
|
||||
/** The `.render()` method for a PFC backing instance. */
|
||||
function doRender(props, state, context) {
|
||||
return this.constructor(props, context);
|
||||
}
|
||||
|
||||
/** Set a component's `props` (generally derived from JSX attributes).
|
||||
* @param {Object} props
|
||||
* @param {Object} [opts]
|
||||
* @param {boolean} [opts.renderSync=false] If `true` and {@link options.syncComponentUpdates} is `true`, triggers synchronous rendering.
|
||||
* @param {boolean} [opts.render=true] If `false`, no render will be triggered.
|
||||
*/
|
||||
|
||||
function setComponentProps(component, props, opts, context, mountAll) {
|
||||
if (component._disable) return;
|
||||
component._disable = true;
|
||||
|
||||
if (component.__ref = props.ref) delete props.ref;
|
||||
if (component.__key = props.key) delete props.key;
|
||||
|
||||
if (!component.base || mountAll) {
|
||||
if (component.componentWillMount) component.componentWillMount();
|
||||
} else if (component.componentWillReceiveProps) {
|
||||
component.componentWillReceiveProps(props, context);
|
||||
}
|
||||
|
||||
if (context && context !== component.context) {
|
||||
if (!component.prevContext) component.prevContext = component.context;
|
||||
component.context = context;
|
||||
}
|
||||
|
||||
if (!component.prevProps) component.prevProps = component.props;
|
||||
component.props = props;
|
||||
|
||||
component._disable = false;
|
||||
|
||||
if (opts !== 0) {
|
||||
if (opts === 1 || options.syncComponentUpdates !== false || !component.base) {
|
||||
renderComponent(component, 1, mountAll);
|
||||
} else {
|
||||
enqueueRender(component);
|
||||
}
|
||||
}
|
||||
|
||||
if (component.__ref) component.__ref(component);
|
||||
}
|
||||
|
||||
/** Render a Component, triggering necessary lifecycle events and taking High-Order Components into account.
|
||||
* @param {Component} component
|
||||
* @param {Object} [opts]
|
||||
* @param {boolean} [opts.build=false] If `true`, component will build and store a DOM node if not already associated with one.
|
||||
* @private
|
||||
*/
|
||||
|
||||
function renderComponent(component, opts, mountAll, isChild) {
|
||||
if (component._disable) return;
|
||||
|
||||
var props = component.props,
|
||||
state = component.state,
|
||||
context = component.context,
|
||||
previousProps = component.prevProps || props,
|
||||
previousState = component.prevState || state,
|
||||
previousContext = component.prevContext || context,
|
||||
isUpdate = component.base,
|
||||
nextBase = component.nextBase,
|
||||
initialBase = isUpdate || nextBase,
|
||||
initialChildComponent = component._component,
|
||||
skip = false,
|
||||
rendered,
|
||||
inst,
|
||||
cbase;
|
||||
|
||||
// if updating
|
||||
if (isUpdate) {
|
||||
component.props = previousProps;
|
||||
component.state = previousState;
|
||||
component.context = previousContext;
|
||||
if (opts !== 2 && component.shouldComponentUpdate && component.shouldComponentUpdate(props, state, context) === false) {
|
||||
skip = true;
|
||||
} else if (component.componentWillUpdate) {
|
||||
component.componentWillUpdate(props, state, context);
|
||||
}
|
||||
component.props = props;
|
||||
component.state = state;
|
||||
component.context = context;
|
||||
}
|
||||
|
||||
component.prevProps = component.prevState = component.prevContext = component.nextBase = null;
|
||||
component._dirty = false;
|
||||
|
||||
if (!skip) {
|
||||
rendered = component.render(props, state, context);
|
||||
|
||||
// context to pass to the child, can be updated via (grand-)parent component
|
||||
if (component.getChildContext) {
|
||||
context = extend(extend({}, context), component.getChildContext());
|
||||
}
|
||||
|
||||
var childComponent = rendered && rendered.nodeName,
|
||||
toUnmount,
|
||||
base;
|
||||
|
||||
if (typeof childComponent === 'function') {
|
||||
// set up high order component link
|
||||
|
||||
var childProps = getNodeProps(rendered);
|
||||
inst = initialChildComponent;
|
||||
|
||||
if (inst && inst.constructor === childComponent && childProps.key == inst.__key) {
|
||||
setComponentProps(inst, childProps, 1, context, false);
|
||||
} else {
|
||||
toUnmount = inst;
|
||||
|
||||
component._component = inst = createComponent(childComponent, childProps, context);
|
||||
inst.nextBase = inst.nextBase || nextBase;
|
||||
inst._parentComponent = component;
|
||||
setComponentProps(inst, childProps, 0, context, false);
|
||||
renderComponent(inst, 1, mountAll, true);
|
||||
}
|
||||
|
||||
base = inst.base;
|
||||
} else {
|
||||
cbase = initialBase;
|
||||
|
||||
// destroy high order component link
|
||||
toUnmount = initialChildComponent;
|
||||
if (toUnmount) {
|
||||
cbase = component._component = null;
|
||||
}
|
||||
|
||||
if (initialBase || opts === 1) {
|
||||
if (cbase) cbase._component = null;
|
||||
base = diff(cbase, rendered, context, mountAll || !isUpdate, initialBase && initialBase.parentNode, true);
|
||||
}
|
||||
}
|
||||
|
||||
if (initialBase && base !== initialBase && inst !== initialChildComponent) {
|
||||
var baseParent = initialBase.parentNode;
|
||||
if (baseParent && base !== baseParent) {
|
||||
baseParent.replaceChild(base, initialBase);
|
||||
|
||||
if (!toUnmount) {
|
||||
initialBase._component = null;
|
||||
recollectNodeTree(initialBase, false);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (toUnmount) {
|
||||
unmountComponent(toUnmount);
|
||||
}
|
||||
|
||||
component.base = base;
|
||||
if (base && !isChild) {
|
||||
var componentRef = component,
|
||||
t = component;
|
||||
while (t = t._parentComponent) {
|
||||
(componentRef = t).base = base;
|
||||
}
|
||||
base._component = componentRef;
|
||||
base._componentConstructor = componentRef.constructor;
|
||||
}
|
||||
}
|
||||
|
||||
if (!isUpdate || mountAll) {
|
||||
mounts.unshift(component);
|
||||
} else if (!skip) {
|
||||
// Ensure that pending componentDidMount() hooks of child components
|
||||
// are called before the componentDidUpdate() hook in the parent.
|
||||
flushMounts();
|
||||
|
||||
if (component.componentDidUpdate) {
|
||||
component.componentDidUpdate(previousProps, previousState, previousContext);
|
||||
}
|
||||
if (options.afterUpdate) options.afterUpdate(component);
|
||||
}
|
||||
|
||||
if (component._renderCallbacks != null) {
|
||||
while (component._renderCallbacks.length) component._renderCallbacks.pop().call(component);
|
||||
}
|
||||
|
||||
if (!diffLevel && !isChild) flushMounts();
|
||||
}
|
||||
|
||||
/** Apply the Component referenced by a VNode to the DOM.
|
||||
* @param {Element} dom The DOM node to mutate
|
||||
* @param {VNode} vnode A Component-referencing VNode
|
||||
* @returns {Element} dom The created/mutated element
|
||||
* @private
|
||||
*/
|
||||
|
||||
function buildComponentFromVNode(dom, vnode, context, mountAll) {
|
||||
var c = dom && dom._component,
|
||||
originalComponent = c,
|
||||
oldDom = dom,
|
||||
isDirectOwner = c && dom._componentConstructor === vnode.nodeName,
|
||||
isOwner = isDirectOwner,
|
||||
props = getNodeProps(vnode);
|
||||
while (c && !isOwner && (c = c._parentComponent)) {
|
||||
isOwner = c.constructor === vnode.nodeName;
|
||||
}
|
||||
|
||||
if (c && isOwner && (!mountAll || c._component)) {
|
||||
setComponentProps(c, props, 3, context, mountAll);
|
||||
dom = c.base;
|
||||
} else {
|
||||
if (originalComponent && !isDirectOwner) {
|
||||
unmountComponent(originalComponent);
|
||||
dom = oldDom = null;
|
||||
}
|
||||
|
||||
c = createComponent(vnode.nodeName, props, context);
|
||||
if (dom && !c.nextBase) {
|
||||
c.nextBase = dom;
|
||||
// passing dom/oldDom as nextBase will recycle it if unused, so bypass recycling on L229:
|
||||
oldDom = null;
|
||||
}
|
||||
setComponentProps(c, props, 1, context, mountAll);
|
||||
dom = c.base;
|
||||
|
||||
if (oldDom && dom !== oldDom) {
|
||||
oldDom._component = null;
|
||||
recollectNodeTree(oldDom, false);
|
||||
}
|
||||
}
|
||||
|
||||
return dom;
|
||||
}
|
||||
|
||||
/** Remove a component from the DOM and recycle it.
|
||||
* @param {Component} component The Component instance to unmount
|
||||
* @private
|
||||
*/
|
||||
|
||||
function unmountComponent(component) {
|
||||
if (options.beforeUnmount) options.beforeUnmount(component);
|
||||
|
||||
var base = component.base;
|
||||
|
||||
component._disable = true;
|
||||
|
||||
if (component.componentWillUnmount) component.componentWillUnmount();
|
||||
|
||||
component.base = null;
|
||||
|
||||
// recursively tear down & recollect high-order component children:
|
||||
var inner = component._component;
|
||||
if (inner) {
|
||||
unmountComponent(inner);
|
||||
} else if (base) {
|
||||
if (base['__preactattr_'] && base['__preactattr_'].ref) base['__preactattr_'].ref(null);
|
||||
|
||||
component.nextBase = base;
|
||||
|
||||
removeNode(base);
|
||||
collectComponent(component);
|
||||
|
||||
removeChildren(base);
|
||||
}
|
||||
|
||||
if (component.__ref) component.__ref(null);
|
||||
}
|
||||
|
||||
/** Base Component class.
|
||||
* Provides `setState()` and `forceUpdate()`, which trigger rendering.
|
||||
* @public
|
||||
*
|
||||
* @example
|
||||
* class MyFoo extends Component {
|
||||
* render(props, state) {
|
||||
* return <div />;
|
||||
* }
|
||||
* }
|
||||
*/
|
||||
|
||||
function Component(props, context) {
|
||||
this._dirty = true;
|
||||
|
||||
/** @public
|
||||
* @type {object}
|
||||
*/
|
||||
this.context = context;
|
||||
|
||||
/** @public
|
||||
* @type {object}
|
||||
*/
|
||||
this.props = props;
|
||||
|
||||
/** @public
|
||||
* @type {object}
|
||||
*/
|
||||
this.state = this.state || {};
|
||||
}
|
||||
|
||||
extend(Component.prototype, {
|
||||
|
||||
/** Returns a `boolean` indicating if the component should re-render when receiving the given `props` and `state`.
|
||||
* @param {object} nextProps
|
||||
* @param {object} nextState
|
||||
* @param {object} nextContext
|
||||
* @returns {Boolean} should the component re-render
|
||||
* @name shouldComponentUpdate
|
||||
* @function
|
||||
*/
|
||||
|
||||
/** Update component state by copying properties from `state` to `this.state`.
|
||||
* @param {object} state A hash of state properties to update with new values
|
||||
* @param {function} callback A function to be called once component state is updated
|
||||
*/
|
||||
setState: function setState(state, callback) {
|
||||
var s = this.state;
|
||||
if (!this.prevState) this.prevState = extend({}, s);
|
||||
extend(s, typeof state === 'function' ? state(s, this.props) : state);
|
||||
if (callback) (this._renderCallbacks = this._renderCallbacks || []).push(callback);
|
||||
enqueueRender(this);
|
||||
},
|
||||
|
||||
/** Immediately perform a synchronous re-render of the component.
|
||||
* @param {function} callback A function to be called after component is re-rendered.
|
||||
* @private
|
||||
*/
|
||||
forceUpdate: function forceUpdate(callback) {
|
||||
if (callback) (this._renderCallbacks = this._renderCallbacks || []).push(callback);
|
||||
renderComponent(this, 2);
|
||||
},
|
||||
|
||||
/** Accepts `props` and `state`, and returns a new Virtual DOM tree to build.
|
||||
* Virtual DOM is generally constructed via [JSX](http://jasonformat.com/wtf-is-jsx).
|
||||
* @param {object} props Props (eg: JSX attributes) received from parent element/component
|
||||
* @param {object} state The component's current state
|
||||
* @param {object} context Context object (if a parent component has provided context)
|
||||
* @returns VNode
|
||||
*/
|
||||
render: function render() {}
|
||||
|
||||
});
|
||||
|
||||
/** Render JSX into a `parent` Element.
|
||||
* @param {VNode} vnode A (JSX) VNode to render
|
||||
* @param {Element} parent DOM element to render into
|
||||
* @param {Element} [merge] Attempt to re-use an existing DOM tree rooted at `merge`
|
||||
* @public
|
||||
*
|
||||
* @example
|
||||
* // render a div into <body>:
|
||||
* render(<div id="hello">hello!</div>, document.body);
|
||||
*
|
||||
* @example
|
||||
* // render a "Thing" component into #foo:
|
||||
* const Thing = ({ name }) => <span>{ name }</span>;
|
||||
* render(<Thing name="one" />, document.querySelector('#foo'));
|
||||
*/
|
||||
|
||||
function render(vnode, parent, merge) {
|
||||
return diff(merge, vnode, {}, false, parent, false);
|
||||
}
|
||||
|
||||
var preact = {
|
||||
h: h,
|
||||
createElement: h,
|
||||
cloneElement: cloneElement,
|
||||
Component: Component,
|
||||
render: render,
|
||||
rerender: rerender,
|
||||
options: options
|
||||
};
|
||||
|
||||
if (typeof module != 'undefined') module.exports = preact;else self.preact = preact;
|
||||
}());
|
||||
//# sourceMappingURL=preact.dev.js.map
|
||||
Reference in New Issue
Block a user