angular-xml-editor
Version:
XML editor component for Angular
60 lines (59 loc) • 7.8 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,uselessCode} checked by tsc
*/
import { DomDummyNodeManager } from '../dummyNodes/domDummyNodeManager.class';
import { XMLCursorPositions } from '../cursor/xmlCursorPos.class';
export class XmlDomCleaner {
/**
* @param {?} node
* @param {?} actualCursor
* @return {?}
*/
static cleanUp(node, actualCursor) {
this.concatTextNodes(node, actualCursor);
}
/**
*
* if two textnodes are direct siblings: concat to one textnode
* @param {?} node
* @param {?} actualCursor
* @param {?=} nodeDepth
* @return {?}
*/
static concatTextNodes(node, actualCursor, nodeDepth = 0) {
/** @type {?} */
let restart = true;
while (restart === true) {
restart = false;
for (let i = 0; i < node.childNodes.length; ++i) {
/** @type {?} */
const firstToCheck = node.childNodes[i];
if (DomDummyNodeManager.IsDummyNode(firstToCheck)) {
throw new Error('Dummynodes have to be removed before using XmlDomCleaner!');
}
if (firstToCheck.nodeType === Node.TEXT_NODE) {
/** @type {?} */
const secondToCheck = firstToCheck.nextSibling;
if (secondToCheck !== null && secondToCheck.nodeType === Node.TEXT_NODE) {
// two text nodes after each other => concat
if (actualCursor.StartPos.ActualNode === secondToCheck) {
actualCursor.StartPos.SetCursor(firstToCheck, XMLCursorPositions.CursorInsideTextNode, firstToCheck.textContent.length + actualCursor.StartPos.PosInTextnode);
}
if (actualCursor.EndPos.ActualNode === secondToCheck) {
actualCursor.EndPos.SetCursor(firstToCheck, XMLCursorPositions.CursorInsideTextNode, firstToCheck.textContent.length + actualCursor.EndPos.PosInTextnode);
}
firstToCheck.textContent = firstToCheck.textContent + secondToCheck.textContent;
node.removeChild(secondToCheck);
restart = true;
}
}
}
}
// update child nodes
for (let i = 0; i < node.childNodes.length; ++i) {
this.concatTextNodes(node.childNodes[i], actualCursor, nodeDepth + 1);
}
}
}
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