312 lines
No EOL
10 KiB
JavaScript
312 lines
No EOL
10 KiB
JavaScript
import { TAG_ID as $, NS, isNumberedHeader } from '../common/html.js';
|
|
//Element utils
|
|
const IMPLICIT_END_TAG_REQUIRED = new Set([$.DD, $.DT, $.LI, $.OPTGROUP, $.OPTION, $.P, $.RB, $.RP, $.RT, $.RTC]);
|
|
const IMPLICIT_END_TAG_REQUIRED_THOROUGHLY = new Set([
|
|
...IMPLICIT_END_TAG_REQUIRED,
|
|
$.CAPTION,
|
|
$.COLGROUP,
|
|
$.TBODY,
|
|
$.TD,
|
|
$.TFOOT,
|
|
$.TH,
|
|
$.THEAD,
|
|
$.TR,
|
|
]);
|
|
const SCOPING_ELEMENT_NS = new Map([
|
|
[$.APPLET, NS.HTML],
|
|
[$.CAPTION, NS.HTML],
|
|
[$.HTML, NS.HTML],
|
|
[$.MARQUEE, NS.HTML],
|
|
[$.OBJECT, NS.HTML],
|
|
[$.TABLE, NS.HTML],
|
|
[$.TD, NS.HTML],
|
|
[$.TEMPLATE, NS.HTML],
|
|
[$.TH, NS.HTML],
|
|
[$.ANNOTATION_XML, NS.MATHML],
|
|
[$.MI, NS.MATHML],
|
|
[$.MN, NS.MATHML],
|
|
[$.MO, NS.MATHML],
|
|
[$.MS, NS.MATHML],
|
|
[$.MTEXT, NS.MATHML],
|
|
[$.DESC, NS.SVG],
|
|
[$.FOREIGN_OBJECT, NS.SVG],
|
|
[$.TITLE, NS.SVG],
|
|
]);
|
|
const NAMED_HEADERS = [$.H1, $.H2, $.H3, $.H4, $.H5, $.H6];
|
|
const TABLE_ROW_CONTEXT = [$.TR, $.TEMPLATE, $.HTML];
|
|
const TABLE_BODY_CONTEXT = [$.TBODY, $.TFOOT, $.THEAD, $.TEMPLATE, $.HTML];
|
|
const TABLE_CONTEXT = [$.TABLE, $.TEMPLATE, $.HTML];
|
|
const TABLE_CELLS = [$.TD, $.TH];
|
|
//Stack of open elements
|
|
export class OpenElementStack {
|
|
get currentTmplContentOrNode() {
|
|
return this._isInTemplate() ? this.treeAdapter.getTemplateContent(this.current) : this.current;
|
|
}
|
|
constructor(document, treeAdapter, handler) {
|
|
this.treeAdapter = treeAdapter;
|
|
this.handler = handler;
|
|
this.items = [];
|
|
this.tagIDs = [];
|
|
this.stackTop = -1;
|
|
this.tmplCount = 0;
|
|
this.currentTagId = $.UNKNOWN;
|
|
this.current = document;
|
|
}
|
|
//Index of element
|
|
_indexOf(element) {
|
|
return this.items.lastIndexOf(element, this.stackTop);
|
|
}
|
|
//Update current element
|
|
_isInTemplate() {
|
|
return this.currentTagId === $.TEMPLATE && this.treeAdapter.getNamespaceURI(this.current) === NS.HTML;
|
|
}
|
|
_updateCurrentElement() {
|
|
this.current = this.items[this.stackTop];
|
|
this.currentTagId = this.tagIDs[this.stackTop];
|
|
}
|
|
//Mutations
|
|
push(element, tagID) {
|
|
this.stackTop++;
|
|
this.items[this.stackTop] = element;
|
|
this.current = element;
|
|
this.tagIDs[this.stackTop] = tagID;
|
|
this.currentTagId = tagID;
|
|
if (this._isInTemplate()) {
|
|
this.tmplCount++;
|
|
}
|
|
this.handler.onItemPush(element, tagID, true);
|
|
}
|
|
pop() {
|
|
const popped = this.current;
|
|
if (this.tmplCount > 0 && this._isInTemplate()) {
|
|
this.tmplCount--;
|
|
}
|
|
this.stackTop--;
|
|
this._updateCurrentElement();
|
|
this.handler.onItemPop(popped, true);
|
|
}
|
|
replace(oldElement, newElement) {
|
|
const idx = this._indexOf(oldElement);
|
|
this.items[idx] = newElement;
|
|
if (idx === this.stackTop) {
|
|
this.current = newElement;
|
|
}
|
|
}
|
|
insertAfter(referenceElement, newElement, newElementID) {
|
|
const insertionIdx = this._indexOf(referenceElement) + 1;
|
|
this.items.splice(insertionIdx, 0, newElement);
|
|
this.tagIDs.splice(insertionIdx, 0, newElementID);
|
|
this.stackTop++;
|
|
if (insertionIdx === this.stackTop) {
|
|
this._updateCurrentElement();
|
|
}
|
|
this.handler.onItemPush(this.current, this.currentTagId, insertionIdx === this.stackTop);
|
|
}
|
|
popUntilTagNamePopped(tagName) {
|
|
let targetIdx = this.stackTop + 1;
|
|
do {
|
|
targetIdx = this.tagIDs.lastIndexOf(tagName, targetIdx - 1);
|
|
} while (targetIdx > 0 && this.treeAdapter.getNamespaceURI(this.items[targetIdx]) !== NS.HTML);
|
|
this.shortenToLength(targetIdx < 0 ? 0 : targetIdx);
|
|
}
|
|
shortenToLength(idx) {
|
|
while (this.stackTop >= idx) {
|
|
const popped = this.current;
|
|
if (this.tmplCount > 0 && this._isInTemplate()) {
|
|
this.tmplCount -= 1;
|
|
}
|
|
this.stackTop--;
|
|
this._updateCurrentElement();
|
|
this.handler.onItemPop(popped, this.stackTop < idx);
|
|
}
|
|
}
|
|
popUntilElementPopped(element) {
|
|
const idx = this._indexOf(element);
|
|
this.shortenToLength(idx < 0 ? 0 : idx);
|
|
}
|
|
popUntilPopped(tagNames, targetNS) {
|
|
const idx = this._indexOfTagNames(tagNames, targetNS);
|
|
this.shortenToLength(idx < 0 ? 0 : idx);
|
|
}
|
|
popUntilNumberedHeaderPopped() {
|
|
this.popUntilPopped(NAMED_HEADERS, NS.HTML);
|
|
}
|
|
popUntilTableCellPopped() {
|
|
this.popUntilPopped(TABLE_CELLS, NS.HTML);
|
|
}
|
|
popAllUpToHtmlElement() {
|
|
//NOTE: here we assume that the root <html> element is always first in the open element stack, so
|
|
//we perform this fast stack clean up.
|
|
this.tmplCount = 0;
|
|
this.shortenToLength(1);
|
|
}
|
|
_indexOfTagNames(tagNames, namespace) {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
if (tagNames.includes(this.tagIDs[i]) && this.treeAdapter.getNamespaceURI(this.items[i]) === namespace) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
clearBackTo(tagNames, targetNS) {
|
|
const idx = this._indexOfTagNames(tagNames, targetNS);
|
|
this.shortenToLength(idx + 1);
|
|
}
|
|
clearBackToTableContext() {
|
|
this.clearBackTo(TABLE_CONTEXT, NS.HTML);
|
|
}
|
|
clearBackToTableBodyContext() {
|
|
this.clearBackTo(TABLE_BODY_CONTEXT, NS.HTML);
|
|
}
|
|
clearBackToTableRowContext() {
|
|
this.clearBackTo(TABLE_ROW_CONTEXT, NS.HTML);
|
|
}
|
|
remove(element) {
|
|
const idx = this._indexOf(element);
|
|
if (idx >= 0) {
|
|
if (idx === this.stackTop) {
|
|
this.pop();
|
|
}
|
|
else {
|
|
this.items.splice(idx, 1);
|
|
this.tagIDs.splice(idx, 1);
|
|
this.stackTop--;
|
|
this._updateCurrentElement();
|
|
this.handler.onItemPop(element, false);
|
|
}
|
|
}
|
|
}
|
|
//Search
|
|
tryPeekProperlyNestedBodyElement() {
|
|
//Properly nested <body> element (should be second element in stack).
|
|
return this.stackTop >= 1 && this.tagIDs[1] === $.BODY ? this.items[1] : null;
|
|
}
|
|
contains(element) {
|
|
return this._indexOf(element) > -1;
|
|
}
|
|
getCommonAncestor(element) {
|
|
const elementIdx = this._indexOf(element) - 1;
|
|
return elementIdx >= 0 ? this.items[elementIdx] : null;
|
|
}
|
|
isRootHtmlElementCurrent() {
|
|
return this.stackTop === 0 && this.tagIDs[0] === $.HTML;
|
|
}
|
|
//Element in scope
|
|
hasInScope(tagName) {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
const tn = this.tagIDs[i];
|
|
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
|
|
if (tn === tagName && ns === NS.HTML) {
|
|
return true;
|
|
}
|
|
if (SCOPING_ELEMENT_NS.get(tn) === ns) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
hasNumberedHeaderInScope() {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
const tn = this.tagIDs[i];
|
|
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
|
|
if (isNumberedHeader(tn) && ns === NS.HTML) {
|
|
return true;
|
|
}
|
|
if (SCOPING_ELEMENT_NS.get(tn) === ns) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
hasInListItemScope(tagName) {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
const tn = this.tagIDs[i];
|
|
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
|
|
if (tn === tagName && ns === NS.HTML) {
|
|
return true;
|
|
}
|
|
if (((tn === $.UL || tn === $.OL) && ns === NS.HTML) || SCOPING_ELEMENT_NS.get(tn) === ns) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
hasInButtonScope(tagName) {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
const tn = this.tagIDs[i];
|
|
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
|
|
if (tn === tagName && ns === NS.HTML) {
|
|
return true;
|
|
}
|
|
if ((tn === $.BUTTON && ns === NS.HTML) || SCOPING_ELEMENT_NS.get(tn) === ns) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
hasInTableScope(tagName) {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
const tn = this.tagIDs[i];
|
|
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
|
|
if (ns !== NS.HTML) {
|
|
continue;
|
|
}
|
|
if (tn === tagName) {
|
|
return true;
|
|
}
|
|
if (tn === $.TABLE || tn === $.TEMPLATE || tn === $.HTML) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
hasTableBodyContextInTableScope() {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
const tn = this.tagIDs[i];
|
|
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
|
|
if (ns !== NS.HTML) {
|
|
continue;
|
|
}
|
|
if (tn === $.TBODY || tn === $.THEAD || tn === $.TFOOT) {
|
|
return true;
|
|
}
|
|
if (tn === $.TABLE || tn === $.HTML) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
hasInSelectScope(tagName) {
|
|
for (let i = this.stackTop; i >= 0; i--) {
|
|
const tn = this.tagIDs[i];
|
|
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
|
|
if (ns !== NS.HTML) {
|
|
continue;
|
|
}
|
|
if (tn === tagName) {
|
|
return true;
|
|
}
|
|
if (tn !== $.OPTION && tn !== $.OPTGROUP) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
//Implied end tags
|
|
generateImpliedEndTags() {
|
|
while (IMPLICIT_END_TAG_REQUIRED.has(this.currentTagId)) {
|
|
this.pop();
|
|
}
|
|
}
|
|
generateImpliedEndTagsThoroughly() {
|
|
while (IMPLICIT_END_TAG_REQUIRED_THOROUGHLY.has(this.currentTagId)) {
|
|
this.pop();
|
|
}
|
|
}
|
|
generateImpliedEndTagsWithExclusion(exclusionId) {
|
|
while (this.currentTagId !== exclusionId && IMPLICIT_END_TAG_REQUIRED_THOROUGHLY.has(this.currentTagId)) {
|
|
this.pop();
|
|
}
|
|
}
|
|
}
|
|
//# sourceMappingURL=open-element-stack.js.map
|