@claromentis/design-system
Version:
Claromentis Design System Component Library
1,167 lines (1,164 loc) • 87.7 kB
JavaScript
'use strict';
function _interopNamespace(e) {
if (e && e.__esModule) return e;
var n = Object.create(null);
if (e) {
Object.keys(e).forEach(function (k) {
if (k !== 'default') {
var d = Object.getOwnPropertyDescriptor(e, k);
Object.defineProperty(n, k, d.get ? d : {
enumerable: true,
get: function () {
return e[k];
}
});
}
});
}
n['default'] = e;
return Object.freeze(n);
}
const NAMESPACE = 'claromentis';
/**
* Virtual DOM patching algorithm based on Snabbdom by
* Simon Friis Vindum (@paldepind)
* Licensed under the MIT License
* https://github.com/snabbdom/snabbdom/blob/master/LICENSE
*
* Modified for Stencil's renderer and slot projection
*/
let scopeId;
let contentRef;
let hostTagName;
let useNativeShadowDom = false;
let checkSlotFallbackVisibility = false;
let checkSlotRelocate = false;
let isSvgMode = false;
let queuePending = false;
const getAssetPath = (path) => {
const assetUrl = new URL(path, plt.$resourcesUrl$);
return assetUrl.origin !== win.location.origin ? assetUrl.href : assetUrl.pathname;
};
const createTime = (fnName, tagName = '') => {
{
return () => {
return;
};
}
};
const uniqueTime = (key, measureText) => {
{
return () => {
return;
};
}
};
const HYDRATED_CSS = '{visibility:hidden}.hydrated{visibility:inherit}';
const XLINK_NS = 'http://www.w3.org/1999/xlink';
/**
* Default style mode id
*/
/**
* Reusable empty obj/array
* Don't add values to these!!
*/
const EMPTY_OBJ = {};
/**
* Namespaces
*/
const SVG_NS = 'http://www.w3.org/2000/svg';
const HTML_NS = 'http://www.w3.org/1999/xhtml';
const isDef = (v) => v != null;
const isComplexType = (o) => {
// https://jsperf.com/typeof-fn-object/5
o = typeof o;
return o === 'object' || o === 'function';
};
/**
* Helper method for querying a `meta` tag that contains a nonce value
* out of a DOM's head.
*
* @param doc The DOM containing the `head` to query against
* @returns The content of the meta tag representing the nonce value, or `undefined` if no tag
* exists or the tag has no content.
*/
function queryNonceMetaTagContent(doc) {
var _a, _b, _c;
return (_c = (_b = (_a = doc.head) === null || _a === void 0 ? void 0 : _a.querySelector('meta[name="csp-nonce"]')) === null || _b === void 0 ? void 0 : _b.getAttribute('content')) !== null && _c !== void 0 ? _c : undefined;
}
/**
* Production h() function based on Preact by
* Jason Miller (@developit)
* Licensed under the MIT License
* https://github.com/developit/preact/blob/master/LICENSE
*
* Modified for Stencil's compiler and vdom
*/
// export function h(nodeName: string | d.FunctionalComponent, vnodeData: d.PropsType, child?: d.ChildType): d.VNode;
// export function h(nodeName: string | d.FunctionalComponent, vnodeData: d.PropsType, ...children: d.ChildType[]): d.VNode;
const h = (nodeName, vnodeData, ...children) => {
let child = null;
let slotName = null;
let simple = false;
let lastSimple = false;
const vNodeChildren = [];
const walk = (c) => {
for (let i = 0; i < c.length; i++) {
child = c[i];
if (Array.isArray(child)) {
walk(child);
}
else if (child != null && typeof child !== 'boolean') {
if ((simple = typeof nodeName !== 'function' && !isComplexType(child))) {
child = String(child);
}
if (simple && lastSimple) {
// If the previous child was simple (string), we merge both
vNodeChildren[vNodeChildren.length - 1].$text$ += child;
}
else {
// Append a new vNode, if it's text, we create a text vNode
vNodeChildren.push(simple ? newVNode(null, child) : child);
}
lastSimple = simple;
}
}
};
walk(children);
if (vnodeData) {
if (vnodeData.name) {
slotName = vnodeData.name;
}
{
const classData = vnodeData.className || vnodeData.class;
if (classData) {
vnodeData.class =
typeof classData !== 'object'
? classData
: Object.keys(classData)
.filter((k) => classData[k])
.join(' ');
}
}
}
const vnode = newVNode(nodeName, null);
vnode.$attrs$ = vnodeData;
if (vNodeChildren.length > 0) {
vnode.$children$ = vNodeChildren;
}
{
vnode.$name$ = slotName;
}
return vnode;
};
/**
* A utility function for creating a virtual DOM node from a tag and some
* possible text content.
*
* @param tag the tag for this element
* @param text possible text content for the node
* @returns a newly-minted virtual DOM node
*/
const newVNode = (tag, text) => {
const vnode = {
$flags$: 0,
$tag$: tag,
$text$: text,
$elm$: null,
$children$: null,
};
{
vnode.$attrs$ = null;
}
{
vnode.$name$ = null;
}
return vnode;
};
const Host = {};
/**
* Check whether a given node is a Host node or not
*
* @param node the virtual DOM node to check
* @returns whether it's a Host node or not
*/
const isHost = (node) => node && node.$tag$ === Host;
/**
* Parse a new property value for a given property type.
*
* While the prop value can reasonably be expected to be of `any` type as far as TypeScript's type checker is concerned,
* it is not safe to assume that the string returned by evaluating `typeof propValue` matches:
* 1. `any`, the type given to `propValue` in the function signature
* 2. the type stored from `propType`.
*
* This function provides the capability to parse/coerce a property's value to potentially any other JavaScript type.
*
* Property values represented in TSX preserve their type information. In the example below, the number 0 is passed to
* a component. This `propValue` will preserve its type information (`typeof propValue === 'number'`). Note that is
* based on the type of the value being passed in, not the type declared of the class member decorated with `@Prop`.
* ```tsx
* <my-cmp prop-val={0}></my-cmp>
* ```
*
* HTML prop values on the other hand, will always a string
*
* @param propValue the new value to coerce to some type
* @param propType the type of the prop, expressed as a binary number
* @returns the parsed/coerced value
*/
const parsePropertyValue = (propValue, propType) => {
// ensure this value is of the correct prop type
if (propValue != null && !isComplexType(propValue)) {
if (propType & 4 /* MEMBER_FLAGS.Boolean */) {
// per the HTML spec, any string value means it is a boolean true value
// but we'll cheat here and say that the string "false" is the boolean false
return propValue === 'false' ? false : propValue === '' || !!propValue;
}
if (propType & 2 /* MEMBER_FLAGS.Number */) {
// force it to be a number
return parseFloat(propValue);
}
if (propType & 1 /* MEMBER_FLAGS.String */) {
// could have been passed as a number or boolean
// but we still want it as a string
return String(propValue);
}
// redundant return here for better minification
return propValue;
}
// not sure exactly what type we want
// so no need to change to a different type
return propValue;
};
const getElement = (ref) => (getHostRef(ref).$hostElement$ );
const createEvent = (ref, name, flags) => {
const elm = getElement(ref);
return {
emit: (detail) => {
return emitEvent(elm, name, {
bubbles: !!(flags & 4 /* EVENT_FLAGS.Bubbles */),
composed: !!(flags & 2 /* EVENT_FLAGS.Composed */),
cancelable: !!(flags & 1 /* EVENT_FLAGS.Cancellable */),
detail,
});
},
};
};
/**
* Helper function to create & dispatch a custom Event on a provided target
* @param elm the target of the Event
* @param name the name to give the custom Event
* @param opts options for configuring a custom Event
* @returns the custom Event
*/
const emitEvent = (elm, name, opts) => {
const ev = plt.ce(name, opts);
elm.dispatchEvent(ev);
return ev;
};
const rootAppliedStyles = /*@__PURE__*/ new WeakMap();
const registerStyle = (scopeId, cssText, allowCS) => {
let style = styles.get(scopeId);
if (supportsConstructableStylesheets && allowCS) {
style = (style || new CSSStyleSheet());
if (typeof style === 'string') {
style = cssText;
}
else {
style.replaceSync(cssText);
}
}
else {
style = cssText;
}
styles.set(scopeId, style);
};
const addStyle = (styleContainerNode, cmpMeta, mode, hostElm) => {
var _a;
let scopeId = getScopeId(cmpMeta);
const style = styles.get(scopeId);
// if an element is NOT connected then getRootNode() will return the wrong root node
// so the fallback is to always use the document for the root node in those cases
styleContainerNode = styleContainerNode.nodeType === 11 /* NODE_TYPE.DocumentFragment */ ? styleContainerNode : doc;
if (style) {
if (typeof style === 'string') {
styleContainerNode = styleContainerNode.head || styleContainerNode;
let appliedStyles = rootAppliedStyles.get(styleContainerNode);
let styleElm;
if (!appliedStyles) {
rootAppliedStyles.set(styleContainerNode, (appliedStyles = new Set()));
}
if (!appliedStyles.has(scopeId)) {
{
{
styleElm = doc.createElement('style');
styleElm.innerHTML = style;
}
// Apply CSP nonce to the style tag if it exists
const nonce = (_a = plt.$nonce$) !== null && _a !== void 0 ? _a : queryNonceMetaTagContent(doc);
if (nonce != null) {
styleElm.setAttribute('nonce', nonce);
}
styleContainerNode.insertBefore(styleElm, styleContainerNode.querySelector('link'));
}
if (appliedStyles) {
appliedStyles.add(scopeId);
}
}
}
else if (!styleContainerNode.adoptedStyleSheets.includes(style)) {
styleContainerNode.adoptedStyleSheets = [...styleContainerNode.adoptedStyleSheets, style];
}
}
return scopeId;
};
const attachStyles = (hostRef) => {
const cmpMeta = hostRef.$cmpMeta$;
const elm = hostRef.$hostElement$;
const flags = cmpMeta.$flags$;
const endAttachStyles = createTime('attachStyles', cmpMeta.$tagName$);
const scopeId = addStyle(supportsShadow && elm.shadowRoot ? elm.shadowRoot : elm.getRootNode(), cmpMeta);
if (flags & 10 /* CMP_FLAGS.needsScopedEncapsulation */) {
// only required when we're NOT using native shadow dom (slot)
// or this browser doesn't support native shadow dom
// and this host element was NOT created with SSR
// let's pick out the inner content for slot projection
// create a node to represent where the original
// content was first placed, which is useful later on
// DOM WRITE!!
elm['s-sc'] = scopeId;
elm.classList.add(scopeId + '-h');
}
endAttachStyles();
};
const getScopeId = (cmp, mode) => 'sc-' + (cmp.$tagName$);
/**
* Production setAccessor() function based on Preact by
* Jason Miller (@developit)
* Licensed under the MIT License
* https://github.com/developit/preact/blob/master/LICENSE
*
* Modified for Stencil's compiler and vdom
*/
const setAccessor = (elm, memberName, oldValue, newValue, isSvg, flags) => {
if (oldValue !== newValue) {
let isProp = isMemberInElement(elm, memberName);
let ln = memberName.toLowerCase();
if (memberName === 'class') {
const classList = elm.classList;
const oldClasses = parseClassList(oldValue);
const newClasses = parseClassList(newValue);
classList.remove(...oldClasses.filter((c) => c && !newClasses.includes(c)));
classList.add(...newClasses.filter((c) => c && !oldClasses.includes(c)));
}
else if (memberName === 'style') {
// update style attribute, css properties and values
{
for (const prop in oldValue) {
if (!newValue || newValue[prop] == null) {
if (prop.includes('-')) {
elm.style.removeProperty(prop);
}
else {
elm.style[prop] = '';
}
}
}
}
for (const prop in newValue) {
if (!oldValue || newValue[prop] !== oldValue[prop]) {
if (prop.includes('-')) {
elm.style.setProperty(prop, newValue[prop]);
}
else {
elm.style[prop] = newValue[prop];
}
}
}
}
else if ((!isProp ) &&
memberName[0] === 'o' &&
memberName[1] === 'n') {
// Event Handlers
// so if the member name starts with "on" and the 3rd characters is
// a capital letter, and it's not already a member on the element,
// then we're assuming it's an event listener
if (memberName[2] === '-') {
// on- prefixed events
// allows to be explicit about the dom event to listen without any magic
// under the hood:
// <my-cmp on-click> // listens for "click"
// <my-cmp on-Click> // listens for "Click"
// <my-cmp on-ionChange> // listens for "ionChange"
// <my-cmp on-EVENTS> // listens for "EVENTS"
memberName = memberName.slice(3);
}
else if (isMemberInElement(win, ln)) {
// standard event
// the JSX attribute could have been "onMouseOver" and the
// member name "onmouseover" is on the window's prototype
// so let's add the listener "mouseover", which is all lowercased
memberName = ln.slice(2);
}
else {
// custom event
// the JSX attribute could have been "onMyCustomEvent"
// so let's trim off the "on" prefix and lowercase the first character
// and add the listener "myCustomEvent"
// except for the first character, we keep the event name case
memberName = ln[2] + memberName.slice(3);
}
if (oldValue) {
plt.rel(elm, memberName, oldValue, false);
}
if (newValue) {
plt.ael(elm, memberName, newValue, false);
}
}
else {
// Set property if it exists and it's not a SVG
const isComplex = isComplexType(newValue);
if ((isProp || (isComplex && newValue !== null)) && !isSvg) {
try {
if (!elm.tagName.includes('-')) {
const n = newValue == null ? '' : newValue;
// Workaround for Safari, moving the <input> caret when re-assigning the same valued
if (memberName === 'list') {
isProp = false;
}
else if (oldValue == null || elm[memberName] != n) {
elm[memberName] = n;
}
}
else {
elm[memberName] = newValue;
}
}
catch (e) { }
}
/**
* Need to manually update attribute if:
* - memberName is not an attribute
* - if we are rendering the host element in order to reflect attribute
* - if it's a SVG, since properties might not work in <svg>
* - if the newValue is null/undefined or 'false'.
*/
let xlink = false;
{
if (ln !== (ln = ln.replace(/^xlink\:?/, ''))) {
memberName = ln;
xlink = true;
}
}
if (newValue == null || newValue === false) {
if (newValue !== false || elm.getAttribute(memberName) === '') {
if (xlink) {
elm.removeAttributeNS(XLINK_NS, memberName);
}
else {
elm.removeAttribute(memberName);
}
}
}
else if ((!isProp || flags & 4 /* VNODE_FLAGS.isHost */ || isSvg) && !isComplex) {
newValue = newValue === true ? '' : newValue;
if (xlink) {
elm.setAttributeNS(XLINK_NS, memberName, newValue);
}
else {
elm.setAttribute(memberName, newValue);
}
}
}
}
};
const parseClassListRegex = /\s/;
const parseClassList = (value) => (!value ? [] : value.split(parseClassListRegex));
const updateElement = (oldVnode, newVnode, isSvgMode, memberName) => {
// if the element passed in is a shadow root, which is a document fragment
// then we want to be adding attrs/props to the shadow root's "host" element
// if it's not a shadow root, then we add attrs/props to the same element
const elm = newVnode.$elm$.nodeType === 11 /* NODE_TYPE.DocumentFragment */ && newVnode.$elm$.host
? newVnode.$elm$.host
: newVnode.$elm$;
const oldVnodeAttrs = (oldVnode && oldVnode.$attrs$) || EMPTY_OBJ;
const newVnodeAttrs = newVnode.$attrs$ || EMPTY_OBJ;
{
// remove attributes no longer present on the vnode by setting them to undefined
for (memberName in oldVnodeAttrs) {
if (!(memberName in newVnodeAttrs)) {
setAccessor(elm, memberName, oldVnodeAttrs[memberName], undefined, isSvgMode, newVnode.$flags$);
}
}
}
// add new & update changed attributes
for (memberName in newVnodeAttrs) {
setAccessor(elm, memberName, oldVnodeAttrs[memberName], newVnodeAttrs[memberName], isSvgMode, newVnode.$flags$);
}
};
/**
* Create a DOM Node corresponding to one of the children of a given VNode.
*
* @param oldParentVNode the parent VNode from the previous render
* @param newParentVNode the parent VNode from the current render
* @param childIndex the index of the VNode, in the _new_ parent node's
* children, for which we will create a new DOM node
* @param parentElm the parent DOM node which our new node will be a child of
* @returns the newly created node
*/
const createElm = (oldParentVNode, newParentVNode, childIndex, parentElm) => {
// tslint:disable-next-line: prefer-const
const newVNode = newParentVNode.$children$[childIndex];
let i = 0;
let elm;
let childNode;
let oldVNode;
if (!useNativeShadowDom) {
// remember for later we need to check to relocate nodes
checkSlotRelocate = true;
if (newVNode.$tag$ === 'slot') {
if (scopeId) {
// scoped css needs to add its scoped id to the parent element
parentElm.classList.add(scopeId + '-s');
}
newVNode.$flags$ |= newVNode.$children$
? // slot element has fallback content
2 /* VNODE_FLAGS.isSlotFallback */
: // slot element does not have fallback content
1 /* VNODE_FLAGS.isSlotReference */;
}
}
if (newVNode.$text$ !== null) {
// create text node
elm = newVNode.$elm$ = doc.createTextNode(newVNode.$text$);
}
else if (newVNode.$flags$ & 1 /* VNODE_FLAGS.isSlotReference */) {
// create a slot reference node
elm = newVNode.$elm$ =
doc.createTextNode('');
}
else {
if (!isSvgMode) {
isSvgMode = newVNode.$tag$ === 'svg';
}
// create element
elm = newVNode.$elm$ = (doc.createElementNS(isSvgMode ? SVG_NS : HTML_NS, newVNode.$flags$ & 2 /* VNODE_FLAGS.isSlotFallback */
? 'slot-fb'
: newVNode.$tag$)
);
if (isSvgMode && newVNode.$tag$ === 'foreignObject') {
isSvgMode = false;
}
// add css classes, attrs, props, listeners, etc.
{
updateElement(null, newVNode, isSvgMode);
}
if (isDef(scopeId) && elm['s-si'] !== scopeId) {
// if there is a scopeId and this is the initial render
// then let's add the scopeId as a css class
elm.classList.add((elm['s-si'] = scopeId));
}
if (newVNode.$children$) {
for (i = 0; i < newVNode.$children$.length; ++i) {
// create the node
childNode = createElm(oldParentVNode, newVNode, i, elm);
// return node could have been null
if (childNode) {
// append our new node
elm.appendChild(childNode);
}
}
}
{
if (newVNode.$tag$ === 'svg') {
// Only reset the SVG context when we're exiting <svg> element
isSvgMode = false;
}
else if (elm.tagName === 'foreignObject') {
// Reenter SVG context when we're exiting <foreignObject> element
isSvgMode = true;
}
}
}
{
elm['s-hn'] = hostTagName;
if (newVNode.$flags$ & (2 /* VNODE_FLAGS.isSlotFallback */ | 1 /* VNODE_FLAGS.isSlotReference */)) {
// remember the content reference comment
elm['s-sr'] = true;
// remember the content reference comment
elm['s-cr'] = contentRef;
// remember the slot name, or empty string for default slot
elm['s-sn'] = newVNode.$name$ || '';
// check if we've got an old vnode for this slot
oldVNode = oldParentVNode && oldParentVNode.$children$ && oldParentVNode.$children$[childIndex];
if (oldVNode && oldVNode.$tag$ === newVNode.$tag$ && oldParentVNode.$elm$) {
// we've got an old slot vnode and the wrapper is being replaced
// so let's move the old slot content back to it's original location
putBackInOriginalLocation(oldParentVNode.$elm$, false);
}
}
}
return elm;
};
const putBackInOriginalLocation = (parentElm, recursive) => {
plt.$flags$ |= 1 /* PLATFORM_FLAGS.isTmpDisconnected */;
const oldSlotChildNodes = parentElm.childNodes;
for (let i = oldSlotChildNodes.length - 1; i >= 0; i--) {
const childNode = oldSlotChildNodes[i];
if (childNode['s-hn'] !== hostTagName && childNode['s-ol']) {
// // this child node in the old element is from another component
// // remove this node from the old slot's parent
// childNode.remove();
// and relocate it back to it's original location
parentReferenceNode(childNode).insertBefore(childNode, referenceNode(childNode));
// remove the old original location comment entirely
// later on the patch function will know what to do
// and move this to the correct spot in need be
childNode['s-ol'].remove();
childNode['s-ol'] = undefined;
checkSlotRelocate = true;
}
if (recursive) {
putBackInOriginalLocation(childNode, recursive);
}
}
plt.$flags$ &= ~1 /* PLATFORM_FLAGS.isTmpDisconnected */;
};
/**
* Create DOM nodes corresponding to a list of {@link d.Vnode} objects and
* add them to the DOM in the appropriate place.
*
* @param parentElm the DOM node which should be used as a parent for the new
* DOM nodes
* @param before a child of the `parentElm` which the new children should be
* inserted before (optional)
* @param parentVNode the parent virtual DOM node
* @param vnodes the new child virtual DOM nodes to produce DOM nodes for
* @param startIdx the index in the child virtual DOM nodes at which to start
* creating DOM nodes (inclusive)
* @param endIdx the index in the child virtual DOM nodes at which to stop
* creating DOM nodes (inclusive)
*/
const addVnodes = (parentElm, before, parentVNode, vnodes, startIdx, endIdx) => {
let containerElm = ((parentElm['s-cr'] && parentElm['s-cr'].parentNode) || parentElm);
let childNode;
if (containerElm.shadowRoot && containerElm.tagName === hostTagName) {
containerElm = containerElm.shadowRoot;
}
for (; startIdx <= endIdx; ++startIdx) {
if (vnodes[startIdx]) {
childNode = createElm(null, parentVNode, startIdx, parentElm);
if (childNode) {
vnodes[startIdx].$elm$ = childNode;
containerElm.insertBefore(childNode, referenceNode(before) );
}
}
}
};
/**
* Remove the DOM elements corresponding to a list of {@link d.VNode} objects.
* This can be used to, for instance, clean up after a list of children which
* should no longer be shown.
*
* This function also handles some of Stencil's slot relocation logic.
*
* @param vnodes a list of virtual DOM nodes to remove
* @param startIdx the index at which to start removing nodes (inclusive)
* @param endIdx the index at which to stop removing nodes (inclusive)
* @param vnode a VNode
* @param elm an element
*/
const removeVnodes = (vnodes, startIdx, endIdx, vnode, elm) => {
for (; startIdx <= endIdx; ++startIdx) {
if ((vnode = vnodes[startIdx])) {
elm = vnode.$elm$;
{
// we're removing this element
// so it's possible we need to show slot fallback content now
checkSlotFallbackVisibility = true;
if (elm['s-ol']) {
// remove the original location comment
elm['s-ol'].remove();
}
else {
// it's possible that child nodes of the node
// that's being removed are slot nodes
putBackInOriginalLocation(elm, true);
}
}
// remove the vnode's element from the dom
elm.remove();
}
}
};
/**
* Reconcile the children of a new VNode with the children of an old VNode by
* traversing the two collections of children, identifying nodes that are
* conserved or changed, calling out to `patch` to make any necessary
* updates to the DOM, and rearranging DOM nodes as needed.
*
* The algorithm for reconciling children works by analyzing two 'windows' onto
* the two arrays of children (`oldCh` and `newCh`). We keep track of the
* 'windows' by storing start and end indices and references to the
* corresponding array entries. Initially the two 'windows' are basically equal
* to the entire array, but we progressively narrow the windows until there are
* no children left to update by doing the following:
*
* 1. Skip any `null` entries at the beginning or end of the two arrays, so
* that if we have an initial array like the following we'll end up dealing
* only with a window bounded by the highlighted elements:
*
* [null, null, VNode1 , ... , VNode2, null, null]
* ^^^^^^ ^^^^^^
*
* 2. Check to see if the elements at the head and tail positions are equal
* across the windows. This will basically detect elements which haven't
* been added, removed, or changed position, i.e. if you had the following
* VNode elements (represented as HTML):
*
* oldVNode: `<div><p><span>HEY</span></p></div>`
* newVNode: `<div><p><span>THERE</span></p></div>`
*
* Then when comparing the children of the `<div>` tag we check the equality
* of the VNodes corresponding to the `<p>` tags and, since they are the
* same tag in the same position, we'd be able to avoid completely
* re-rendering the subtree under them with a new DOM element and would just
* call out to `patch` to handle reconciling their children and so on.
*
* 3. Check, for both windows, to see if the element at the beginning of the
* window corresponds to the element at the end of the other window. This is
* a heuristic which will let us identify _some_ situations in which
* elements have changed position, for instance it _should_ detect that the
* children nodes themselves have not changed but merely moved in the
* following example:
*
* oldVNode: `<div><element-one /><element-two /></div>`
* newVNode: `<div><element-two /><element-one /></div>`
*
* If we find cases like this then we also need to move the concrete DOM
* elements corresponding to the moved children to write the re-order to the
* DOM.
*
* 4. Finally, if VNodes have the `key` attribute set on them we check for any
* nodes in the old children which have the same key as the first element in
* our window on the new children. If we find such a node we handle calling
* out to `patch`, moving relevant DOM nodes, and so on, in accordance with
* what we find.
*
* Finally, once we've narrowed our 'windows' to the point that either of them
* collapse (i.e. they have length 0) we then handle any remaining VNode
* insertion or deletion that needs to happen to get a DOM state that correctly
* reflects the new child VNodes. If, for instance, after our window on the old
* children has collapsed we still have more nodes on the new children that
* we haven't dealt with yet then we need to add them, or if the new children
* collapse but we still have unhandled _old_ children then we need to make
* sure the corresponding DOM nodes are removed.
*
* @param parentElm the node into which the parent VNode is rendered
* @param oldCh the old children of the parent node
* @param newVNode the new VNode which will replace the parent
* @param newCh the new children of the parent node
*/
const updateChildren = (parentElm, oldCh, newVNode, newCh) => {
let oldStartIdx = 0;
let newStartIdx = 0;
let oldEndIdx = oldCh.length - 1;
let oldStartVnode = oldCh[0];
let oldEndVnode = oldCh[oldEndIdx];
let newEndIdx = newCh.length - 1;
let newStartVnode = newCh[0];
let newEndVnode = newCh[newEndIdx];
let node;
while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
if (oldStartVnode == null) {
// VNode might have been moved left
oldStartVnode = oldCh[++oldStartIdx];
}
else if (oldEndVnode == null) {
oldEndVnode = oldCh[--oldEndIdx];
}
else if (newStartVnode == null) {
newStartVnode = newCh[++newStartIdx];
}
else if (newEndVnode == null) {
newEndVnode = newCh[--newEndIdx];
}
else if (isSameVnode(oldStartVnode, newStartVnode)) {
// if the start nodes are the same then we should patch the new VNode
// onto the old one, and increment our `newStartIdx` and `oldStartIdx`
// indices to reflect that. We don't need to move any DOM Nodes around
// since things are matched up in order.
patch(oldStartVnode, newStartVnode);
oldStartVnode = oldCh[++oldStartIdx];
newStartVnode = newCh[++newStartIdx];
}
else if (isSameVnode(oldEndVnode, newEndVnode)) {
// likewise, if the end nodes are the same we patch new onto old and
// decrement our end indices, and also likewise in this case we don't
// need to move any DOM Nodes.
patch(oldEndVnode, newEndVnode);
oldEndVnode = oldCh[--oldEndIdx];
newEndVnode = newCh[--newEndIdx];
}
else if (isSameVnode(oldStartVnode, newEndVnode)) {
// case: "Vnode moved right"
//
// We've found that the last node in our window on the new children is
// the same VNode as the _first_ node in our window on the old children
// we're dealing with now. Visually, this is the layout of these two
// nodes:
//
// newCh: [..., newStartVnode , ... , newEndVnode , ...]
// ^^^^^^^^^^^
// oldCh: [..., oldStartVnode , ... , oldEndVnode , ...]
// ^^^^^^^^^^^^^
//
// In this situation we need to patch `newEndVnode` onto `oldStartVnode`
// and move the DOM element for `oldStartVnode`.
if ((oldStartVnode.$tag$ === 'slot' || newEndVnode.$tag$ === 'slot')) {
putBackInOriginalLocation(oldStartVnode.$elm$.parentNode, false);
}
patch(oldStartVnode, newEndVnode);
// We need to move the element for `oldStartVnode` into a position which
// will be appropriate for `newEndVnode`. For this we can use
// `.insertBefore` and `oldEndVnode.$elm$.nextSibling`. If there is a
// sibling for `oldEndVnode.$elm$` then we want to move the DOM node for
// `oldStartVnode` between `oldEndVnode` and it's sibling, like so:
//
// <old-start-node />
// <some-intervening-node />
// <old-end-node />
// <!-- -> <-- `oldStartVnode.$elm$` should be inserted here
// <next-sibling />
//
// If instead `oldEndVnode.$elm$` has no sibling then we just want to put
// the node for `oldStartVnode` at the end of the children of
// `parentElm`. Luckily, `Node.nextSibling` will return `null` if there
// aren't any siblings, and passing `null` to `Node.insertBefore` will
// append it to the children of the parent element.
parentElm.insertBefore(oldStartVnode.$elm$, oldEndVnode.$elm$.nextSibling);
oldStartVnode = oldCh[++oldStartIdx];
newEndVnode = newCh[--newEndIdx];
}
else if (isSameVnode(oldEndVnode, newStartVnode)) {
// case: "Vnode moved left"
//
// We've found that the first node in our window on the new children is
// the same VNode as the _last_ node in our window on the old children.
// Visually, this is the layout of these two nodes:
//
// newCh: [..., newStartVnode , ... , newEndVnode , ...]
// ^^^^^^^^^^^^^
// oldCh: [..., oldStartVnode , ... , oldEndVnode , ...]
// ^^^^^^^^^^^
//
// In this situation we need to patch `newStartVnode` onto `oldEndVnode`
// (which will handle updating any changed attributes, reconciling their
// children etc) but we also need to move the DOM node to which
// `oldEndVnode` corresponds.
if ((oldStartVnode.$tag$ === 'slot' || newEndVnode.$tag$ === 'slot')) {
putBackInOriginalLocation(oldEndVnode.$elm$.parentNode, false);
}
patch(oldEndVnode, newStartVnode);
// We've already checked above if `oldStartVnode` and `newStartVnode` are
// the same node, so since we're here we know that they are not. Thus we
// can move the element for `oldEndVnode` _before_ the element for
// `oldStartVnode`, leaving `oldStartVnode` to be reconciled in the
// future.
parentElm.insertBefore(oldEndVnode.$elm$, oldStartVnode.$elm$);
oldEndVnode = oldCh[--oldEndIdx];
newStartVnode = newCh[++newStartIdx];
}
else {
{
// We either didn't find an element in the old children that matches
// the key of the first new child OR the build is not using `key`
// attributes at all. In either case we need to create a new element
// for the new node.
node = createElm(oldCh && oldCh[newStartIdx], newVNode, newStartIdx, parentElm);
newStartVnode = newCh[++newStartIdx];
}
if (node) {
// if we created a new node then handle inserting it to the DOM
{
parentReferenceNode(oldStartVnode.$elm$).insertBefore(node, referenceNode(oldStartVnode.$elm$));
}
}
}
}
if (oldStartIdx > oldEndIdx) {
// we have some more new nodes to add which don't match up with old nodes
addVnodes(parentElm, newCh[newEndIdx + 1] == null ? null : newCh[newEndIdx + 1].$elm$, newVNode, newCh, newStartIdx, newEndIdx);
}
else if (newStartIdx > newEndIdx) {
// there are nodes in the `oldCh` array which no longer correspond to nodes
// in the new array, so lets remove them (which entails cleaning up the
// relevant DOM nodes)
removeVnodes(oldCh, oldStartIdx, oldEndIdx);
}
};
/**
* Compare two VNodes to determine if they are the same
*
* **NB**: This function is an equality _heuristic_ based on the available
* information set on the two VNodes and can be misleading under certain
* circumstances. In particular, if the two nodes do not have `key` attrs
* (available under `$key$` on VNodes) then the function falls back on merely
* checking that they have the same tag.
*
* So, in other words, if `key` attrs are not set on VNodes which may be
* changing order within a `children` array or something along those lines then
* we could obtain a false negative and then have to do needless re-rendering
* (i.e. we'd say two VNodes aren't equal when in fact they should be).
*
* @param leftVNode the first VNode to check
* @param rightVNode the second VNode to check
* @returns whether they're equal or not
*/
const isSameVnode = (leftVNode, rightVNode) => {
// compare if two vnode to see if they're "technically" the same
// need to have the same element tag, and same key to be the same
if (leftVNode.$tag$ === rightVNode.$tag$) {
if (leftVNode.$tag$ === 'slot') {
return leftVNode.$name$ === rightVNode.$name$;
}
return true;
}
return false;
};
const referenceNode = (node) => {
// this node was relocated to a new location in the dom
// because of some other component's slot
// but we still have an html comment in place of where
// it's original location was according to it's original vdom
return (node && node['s-ol']) || node;
};
const parentReferenceNode = (node) => (node['s-ol'] ? node['s-ol'] : node).parentNode;
/**
* Handle reconciling an outdated VNode with a new one which corresponds to
* it. This function handles flushing updates to the DOM and reconciling the
* children of the two nodes (if any).
*
* @param oldVNode an old VNode whose DOM element and children we want to update
* @param newVNode a new VNode representing an updated version of the old one
*/
const patch = (oldVNode, newVNode) => {
const elm = (newVNode.$elm$ = oldVNode.$elm$);
const oldChildren = oldVNode.$children$;
const newChildren = newVNode.$children$;
const tag = newVNode.$tag$;
const text = newVNode.$text$;
let defaultHolder;
if (text === null) {
{
// test if we're rendering an svg element, or still rendering nodes inside of one
// only add this to the when the compiler sees we're using an svg somewhere
isSvgMode = tag === 'svg' ? true : tag === 'foreignObject' ? false : isSvgMode;
}
{
if (tag === 'slot')
;
else {
// either this is the first render of an element OR it's an update
// AND we already know it's possible it could have changed
// this updates the element's css classes, attrs, props, listeners, etc.
updateElement(oldVNode, newVNode, isSvgMode);
}
}
if (oldChildren !== null && newChildren !== null) {
// looks like there's child vnodes for both the old and new vnodes
// so we need to call `updateChildren` to reconcile them
updateChildren(elm, oldChildren, newVNode, newChildren);
}
else if (newChildren !== null) {
// no old child vnodes, but there are new child vnodes to add
if (oldVNode.$text$ !== null) {
// the old vnode was text, so be sure to clear it out
elm.textContent = '';
}
// add the new vnode children
addVnodes(elm, null, newVNode, newChildren, 0, newChildren.length - 1);
}
else if (oldChildren !== null) {
// no new child vnodes, but there are old child vnodes to remove
removeVnodes(oldChildren, 0, oldChildren.length - 1);
}
if (isSvgMode && tag === 'svg') {
isSvgMode = false;
}
}
else if ((defaultHolder = elm['s-cr'])) {
// this element has slotted content
defaultHolder.parentNode.textContent = text;
}
else if (oldVNode.$text$ !== text) {
// update the text content for the text only vnode
// and also only if the text is different than before
elm.data = text;
}
};
const updateFallbackSlotVisibility = (elm) => {
// tslint:disable-next-line: prefer-const
const childNodes = elm.childNodes;
let childNode;
let i;
let ilen;
let j;
let slotNameAttr;
let nodeType;
for (i = 0, ilen = childNodes.length; i < ilen; i++) {
childNode = childNodes[i];
if (childNode.nodeType === 1 /* NODE_TYPE.ElementNode */) {
if (childNode['s-sr']) {
// this is a slot fallback node
// get the slot name for this slot reference node
slotNameAttr = childNode['s-sn'];
// by default always show a fallback slot node
// then hide it if there are other slots in the light dom
childNode.hidden = false;
for (j = 0; j < ilen; j++) {
nodeType = childNodes[j].nodeType;
if (childNodes[j]['s-hn'] !== childNode['s-hn'] || slotNameAttr !== '') {
// this sibling node is from a different component OR is a named fallback slot node
if (nodeType === 1 /* NODE_TYPE.ElementNode */ && slotNameAttr === childNodes[j].getAttribute('slot')) {
childNode.hidden = true;
break;
}
}
else {
// this is a default fallback slot node
// any element or text node (with content)
// should hide the default fallback slot node
if (nodeType === 1 /* NODE_TYPE.ElementNode */ ||
(nodeType === 3 /* NODE_TYPE.TextNode */ && childNodes[j].textContent.trim() !== '')) {
childNode.hidden = true;
break;
}
}
}
}
// keep drilling down
updateFallbackSlotVisibility(childNode);
}
}
};
const relocateNodes = [];
const relocateSlotContent = (elm) => {
// tslint:disable-next-line: prefer-const
let childNode;
let node;
let hostContentNodes;
let slotNameAttr;
let relocateNodeData;
let j;
let i = 0;
const childNodes = elm.childNodes;
const ilen = childNodes.length;
for (; i < ilen; i++) {
childNode = childNodes[i];
if (childNode['s-sr'] && (node = childNode['s-cr']) && node.parentNode) {
// first got the content reference comment node
// then we got it's parent, which is where all the host content is in now
hostContentNodes = node.parentNode.childNodes;
slotNameAttr = childNode['s-sn'];
for (j = hostContentNodes.length - 1; j >= 0; j--) {
node = hostContentNodes[j];
if (!node['s-cn'] && !node['s-nr'] && node['s-hn'] !== childNode['s-hn']) {
// let's do some relocating to its new home
// but never relocate a content reference node
// that is suppose to always represent the original content location
if (isNodeLocatedInSlot(node, slotNameAttr)) {
// it's possible we've already decided to relocate this node
relocateNodeData = relocateNodes.find((r) => r.$nodeToRelocate$ === node);
// made some changes to slots
// let's make sure we also double check
// fallbacks are correctly hidden or shown
checkSlotFallbackVisibility = true;
node['s-sn'] = node['s-sn'] || slotNameAttr;
if (relocateNodeData) {
// previously we never found a slot home for this node
// but turns out we did, so let's remember it now
relocateNodeData.$slotRefNode$ = childNode;
}
else {
// add to our list of nodes to relocate
relocateNodes.push({
$slotRefNode$: childNode,
$nodeToRelocate$: node,
});
}
if (node['s-sr']) {
relocateNodes.map((relocateNode) => {
if (isNodeLocatedInSlot(relocateNode.$nodeToRelocate$, node['s-sn'])) {
relocateNodeData = relocateNodes.find((r) => r.$nodeToRelocate$ === node);
if (relocateNodeData && !relocateNode.$slotRefNode$) {
relocateNode.$slotRefNode$ = relocateNodeData.$slotRefNode$;
}
}
});
}
}
else if (!relocateNodes.some((r) => r.$nodeToRelocate$ === node)) {
// so far this element does not have a slot home, not setting slotRefNode on purpose
// if we never find a home for this element then we'll need to hide it
relocateNodes.push({
$nodeToRelocate$: node,
});
}
}
}
}
if (childNode.nodeType === 1 /* NODE_TYPE.ElementNode */) {
relocateSlotContent(childNode);
}
}
};
const isNodeLocatedInSlot = (nodeToRelocate, slotNameAttr) => {
if (nodeToRelocate.nodeType === 1 /* NODE_TYPE.ElementNode */) {
if (nodeToRelocate.getAttribute('slot') === null && slotNameAttr === '') {
return true;
}
if (nodeToRelocate.getAttribute('slot') === slotNameAttr) {
return true;
}
return false;
}
if (nodeToRelocate['s-sn'] === slotNameAttr) {
return true;
}
return slotNameAttr === '';
};
/**
* The main entry point for Stencil's virtual DOM-based rendering engine
*
* Given a {@link d.HostRef} container and some virtual DOM nodes, this
* function will handle creating a virtual DOM tree with a single root, patching
* the current virtual DOM tree onto an old one (if any), dealing with slot
* relocation, and reflecting attributes.
*
* @param hostRef data needed to root and render the virtual DOM tree, such as
* the DOM node into which it should be rendered.
* @param renderFnResults the virtual DOM nodes to be rendered
*/
const renderVdom = (hostRef, renderFnResults) => {
const hostElm = hostRef.$hostElement$;
const cmpMeta = hostRef.$cmpMeta$;
const oldVNode = hostRef.$vnode$ || newVNode(null, null);
const rootVnode = isHost(renderFnResults) ? renderFnResults : h(null, null, renderFnResults);
hostTagName = hostElm.tagName;
if (cmpMeta.$attrsToReflect$) {
rootVnode.$attrs$ = rootVnode.$attrs$ || {};
cmpMeta.$attrsToReflect$.map(([propName, attribute]) => (rootVnode.$attrs$[attribute] = hostElm[propName]));
}
rootVnode.$tag$ = null;
rootVnode.$flags$ |= 4 /* VNODE_FLAGS.isHost */;
hostRef.$vnode$ = rootVnode;
rootVnode.$elm$ = oldVNode.$elm$ = (hostElm.shadowRoot || hostElm );
{
scopeId = hostElm['s-sc'];
}
{
contentRef = hostElm['s-cr'];
useNativeShadowDom = supportsShadow && (cmpMeta.$flags$ & 1 /* CMP_FLAGS.shadowDomEncapsulation */) !== 0;
// always reset
checkSlotFallbackVisibility =