angular-xml-editor
Version:
XML editor component for Angular
261 lines (260 loc) • 25.6 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,uselessCode} checked by tsc
*/
import { Xml2html } from '../xml-html-converter/xml2html.class';
export class DomDummyNodeManager {
constructor() { }
/**
* @param {?} node
* @return {?}
*/
static IsDummyNode(node) {
/** @type {?} */
const asElem = /** @type {?} */ (node);
if (asElem && node.nodeType === Node.ELEMENT_NODE) {
return asElem.classList.contains(DomDummyNodeManager.DummyNodeClassName);
}
return false;
}
/**
* @param {?} node
* @return {?}
*/
static IsBeforeFirstTagDummyNode(node) {
if (DomDummyNodeManager.IsDummyNode(node)) {
/** @type {?} */
const asElem = /** @type {?} */ (node);
if (asElem && node.nodeType === Node.ELEMENT_NODE) {
return asElem.classList.contains(DomDummyNodeManager.DummyNodeBeforeFirstTagClassName);
}
return false;
}
else {
return false;
}
}
/**
* @param {?} node
* @return {?}
*/
static getPreviousSibling(node) {
if (!node) {
return undefined;
}
while (node) {
node = node.previousSibling;
if (node) {
if (DomDummyNodeManager.IsDummyNode(node)) {
}
else {
return node;
}
}
}
return undefined;
}
/**
* @param {?} node
* @return {?}
*/
static getNextSibling(node) {
if (!node) {
return undefined;
}
while (node) {
node = node.nextSibling;
if (node) {
if (DomDummyNodeManager.IsDummyNode(node)) {
}
else {
return node;
}
}
}
return undefined;
}
/**
* @param {?} node
* @return {?}
*/
static getChildNodeCount(node) {
if (!node) {
return 0;
}
/** @type {?} */
let count = 0;
for (let i = 0; i < node.childNodes.length; i++) {
if (!DomDummyNodeManager.IsDummyNode(node.childNodes[i])) {
count++;
}
}
return count;
}
/**
* @param {?} node
* @return {?}
*/
static getFirstChild(node) {
if (!node) {
return undefined;
}
/** @type {?} */
let first = /** @type {?} */ (node.firstChild);
while (DomDummyNodeManager.IsDummyNode(first)) {
first = first.nextSibling;
}
return first;
}
/**
* @param {?} node
* @return {?}
*/
static getLastChild(node) {
if (!node) {
return undefined;
}
/** @type {?} */
let last = /** @type {?} */ (node.lastChild);
while (DomDummyNodeManager.IsDummyNode(last)) {
last = last.previousSibling;
}
return last;
}
/**
* @param {?} node
* @param {?=} nodeDepth
* @return {?}
*/
RemoveAllDummyNodes(node, nodeDepth = 0) {
/** @type {?} */
let children = [];
for (let i = 0; i < node.childNodes.length; ++i) {
children.push(node.childNodes[i]);
}
// delete all dummy node children
children.forEach(child => {
if (DomDummyNodeManager.IsDummyNode(child)) {
node.removeChild(child);
}
});
children = [];
for (let i = 0; i < node.childNodes.length; ++i) {
children.push(node.childNodes[i]);
}
// update child nodes
children.forEach(child => {
this.RemoveAllDummyNodes(child, nodeDepth + 1);
});
}
/**
* @param {?} node
* @param {?=} nodeDepth
* @return {?}
*/
UpdateDummyNodes(node, nodeDepth = 0) {
/** @type {?} */
const document = node.ownerDocument;
/** @type {?} */
const asElement = /** @type {?} */ (node);
/** @type {?} */
const children = [];
for (let i = 0; i < node.childNodes.length; ++i) {
children.push(node.childNodes[i]);
}
if (asElement && !DomDummyNodeManager.IsDummyNode(asElement) && !DomDummyNodeManager.IsDummyNode(asElement.parentElement)) {
if (asElement.nodeType === Node.TEXT_NODE) {
/** @type {?} */
const before = asElement.previousSibling;
if (before.nodeType === Node.TEXT_NODE) {
// textnode after text node: dont insert dummy node!
}
else {
if (!DomDummyNodeManager.IsDummyNode(before)) {
asElement.parentNode.insertBefore(this.createDummyNode(document), asElement);
}
}
}
if (asElement.nodeType === Node.ELEMENT_NODE) {
/** @type {?} */
let firstChild = node.firstChild;
if (!firstChild) {
// create dummy node in empty tag
node.appendChild(this.createDummyNode(document));
firstChild = node.firstChild;
}
if (Xml2html.isNoClosingElement(node)) {
}
else {
firstChild = node.firstChild;
if (!firstChild) {
// create dummy node in empty tag
node.appendChild(this.createDummyNode(document));
firstChild = node.firstChild;
}
// Insert a dummy node before the first child
if (!DomDummyNodeManager.IsDummyNode(firstChild)) {
if (firstChild) {
node.insertBefore(this.createDummyNode(document), firstChild);
firstChild = node.firstChild;
}
else {
node.appendChild(this.createDummyNode(document));
}
}
/** @type {?} */
let lastChild = node.lastChild;
if (!DomDummyNodeManager.IsDummyNode(lastChild)) {
node.appendChild(this.createDummyNode(document));
lastChild = node.lastChild;
}
// Insert a dummy node before the first (dummy child) but optical in front of the node (to show the cursor in front of the node)
if (nodeDepth > 0) {
if (DomDummyNodeManager.IsDummyNode(firstChild) && !DomDummyNodeManager.IsBeforeFirstTagDummyNode(firstChild)) {
/** @type {?} */
const dummyNode = this.createDummyNode(document);
dummyNode.classList.add(DomDummyNodeManager.DummyNodeBeforeFirstTagClassName);
asElement.insertBefore(dummyNode, firstChild);
}
}
}
}
}
// update child nodes
children.forEach(child => {
this.UpdateDummyNodes(child, nodeDepth + 1);
});
}
/**
* @param {?} targetDocument
* @param {?=} content
* @return {?}
*/
createDummyNode(targetDocument, content) {
/** @type {?} */
const dummyNode = targetDocument.createElement('span');
/** @type {?} */
let dummy2TextNode;
if (content === undefined) {
dummy2TextNode = targetDocument.createTextNode(DomDummyNodeManager.DummyNodeContent);
}
else {
dummy2TextNode = targetDocument.createTextNode(content);
}
dummyNode.classList.add(DomDummyNodeManager.DummyNodeClassName);
dummyNode.appendChild(dummy2TextNode);
return dummyNode;
}
}
DomDummyNodeManager.DummyNodeClassName = 'dummyNode';
DomDummyNodeManager.DummyNodeBeforeFirstTagClassName = 'beforefirstTag';
DomDummyNodeManager.DummyNodeContent = String.fromCharCode(160);
if (false) {
/** @type {?} */
DomDummyNodeManager.DummyNodeClassName;
/** @type {?} */
DomDummyNodeManager.DummyNodeBeforeFirstTagClassName;
/** @type {?} */
DomDummyNodeManager.DummyNodeContent;
}
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{ Xml2html } from '../xml-html-converter/xml2html.class';\r\n\r\nexport class DomDummyNodeManager {\r\n  public static DummyNodeClassName = 'dummyNode';\r\n  public static DummyNodeBeforeFirstTagClassName = 'beforefirstTag';\r\n  public static DummyNodeContent = String.fromCharCode(160);\r\n\r\n  constructor() {}\r\n\r\n  public static IsDummyNode(node: Node) {\r\n    const asElem = node as Element;\r\n    if (asElem && node.nodeType === Node.ELEMENT_NODE) {\r\n      return asElem.classList.contains(DomDummyNodeManager.DummyNodeClassName);\r\n    }\r\n    return false;\r\n  }\r\n\r\n  public static IsBeforeFirstTagDummyNode(node: Node) {\r\n    if (DomDummyNodeManager.IsDummyNode(node)) {\r\n      const asElem = node as Element;\r\n      if (asElem && node.nodeType === Node.ELEMENT_NODE) {\r\n        return asElem.classList.contains(DomDummyNodeManager.DummyNodeBeforeFirstTagClassName);\r\n      }\r\n      return false;\r\n    } else {\r\n      return false;\r\n    }\r\n  }\r\n\r\n  // get previos sibling - except dummy nodes\r\n  public static getPreviousSibling(node: Node): Node {\r\n    if (!node) {\r\n      return undefined;\r\n    }\r\n    while (node) {\r\n      node = node.previousSibling;\r\n      if (node) {\r\n        if (DomDummyNodeManager.IsDummyNode(node)) {\r\n        } else {\r\n          return node;\r\n        }\r\n      }\r\n    }\r\n    return undefined;\r\n  }\r\n\r\n  // get next sibling - except dummy nodes\r\n  public static getNextSibling(node: Node): Node {\r\n    if (!node) {\r\n      return undefined;\r\n    }\r\n    while (node) {\r\n      node = node.nextSibling;\r\n      if (node) {\r\n        if (DomDummyNodeManager.IsDummyNode(node)) {\r\n        } else {\r\n          return node;\r\n        }\r\n      }\r\n    }\r\n    return undefined;\r\n  }\r\n\r\n  // get children count - except dummy nodes\r\n  public static getChildNodeCount(node: Node): number {\r\n    if (!node) {\r\n      return 0;\r\n    }\r\n    let count = 0;\r\n    for (let i = 0; i < node.childNodes.length; i++) {\r\n      if (!DomDummyNodeManager.IsDummyNode(node.childNodes[i])) {\r\n        count++;\r\n      }\r\n    }\r\n    return count;\r\n  }\r\n\r\n  // get first child - except dummy nodes\r\n  public static getFirstChild(node: Node): Node {\r\n    if (!node) {\r\n      return undefined;\r\n    }\r\n    let first = node.firstChild as Node;\r\n    while (DomDummyNodeManager.IsDummyNode(first)) {\r\n      first = first.nextSibling;\r\n    }\r\n    return first;\r\n  }\r\n\r\n  // get last child - except dummy nodes\r\n  public static getLastChild(node: Node): Node {\r\n    if (!node) {\r\n      return undefined;\r\n    }\r\n    let last = node.lastChild as Node;\r\n    while (DomDummyNodeManager.IsDummyNode(last)) {\r\n      last = last.previousSibling;\r\n    }\r\n    return last;\r\n  }\r\n\r\n  RemoveAllDummyNodes(node: Node, nodeDepth = 0): void {\r\n    let children: Node[] = [];\r\n    for (let i = 0; i < node.childNodes.length; ++i) {\r\n      children.push(node.childNodes[i]);\r\n    }\r\n\r\n    // delete all dummy node children\r\n    children.forEach(child => {\r\n      if (DomDummyNodeManager.IsDummyNode(child)) {\r\n        node.removeChild(child);\r\n      }\r\n    });\r\n\r\n    children = [];\r\n    for (let i = 0; i < node.childNodes.length; ++i) {\r\n      children.push(node.childNodes[i]);\r\n    }\r\n\r\n    // update child nodes\r\n    children.forEach(child => {\r\n      this.RemoveAllDummyNodes(child, nodeDepth + 1);\r\n    });\r\n  }\r\n\r\n  UpdateDummyNodes(node: Node, nodeDepth = 0) {\r\n    const document = node.ownerDocument;\r\n    const asElement = node as Element;\r\n\r\n    const children: Node[] = [];\r\n    for (let i = 0; i < node.childNodes.length; ++i) {\r\n      children.push(node.childNodes[i]);\r\n    }\r\n\r\n    if (asElement && !DomDummyNodeManager.IsDummyNode(asElement) && !DomDummyNodeManager.IsDummyNode(asElement.parentElement)) {\r\n      if (asElement.nodeType === Node.TEXT_NODE) {\r\n        const before = asElement.previousSibling;\r\n        if (before.nodeType === Node.TEXT_NODE) {\r\n          // textnode after text node: dont insert dummy node!\r\n        } else {\r\n          if (!DomDummyNodeManager.IsDummyNode(before)) {\r\n            asElement.parentNode.insertBefore(this.createDummyNode(document), asElement);\r\n          }\r\n        }\r\n      }\r\n\r\n      if (asElement.nodeType === Node.ELEMENT_NODE) {\r\n        let firstChild = node.firstChild;\r\n        if (!firstChild) {\r\n          // create dummy node in empty tag\r\n          node.appendChild(this.createDummyNode(document));\r\n          firstChild = node.firstChild;\r\n        }\r\n\r\n        if (Xml2html.isNoClosingElement(node)) {\r\n        } else {\r\n          firstChild = node.firstChild;\r\n\r\n          if (!firstChild) {\r\n            // create dummy node in empty tag\r\n            node.appendChild(this.createDummyNode(document));\r\n            firstChild = node.firstChild;\r\n          }\r\n\r\n          // Insert a dummy node before the first child\r\n          if (!DomDummyNodeManager.IsDummyNode(firstChild)) {\r\n            if (firstChild) {\r\n              node.insertBefore(this.createDummyNode(document), firstChild);\r\n              firstChild = node.firstChild;\r\n            } else {\r\n              node.appendChild(this.createDummyNode(document));\r\n            }\r\n          }\r\n\r\n          // Insert a dummy node after the last child\r\n          let lastChild = node.lastChild;\r\n          if (!DomDummyNodeManager.IsDummyNode(lastChild)) {\r\n            node.appendChild(this.createDummyNode(document));\r\n            lastChild = node.lastChild;\r\n          }\r\n\r\n          // Insert a dummy node before the first (dummy child) but optical in front of the node (to show the cursor in front of the node)\r\n          if (nodeDepth > 0) {\r\n            if (DomDummyNodeManager.IsDummyNode(firstChild) && !DomDummyNodeManager.IsBeforeFirstTagDummyNode(firstChild)) {\r\n              const dummyNode = this.createDummyNode(document);\r\n              dummyNode.classList.add(DomDummyNodeManager.DummyNodeBeforeFirstTagClassName);\r\n              asElement.insertBefore(dummyNode, firstChild);\r\n            }\r\n          }\r\n        }\r\n      }\r\n    }\r\n\r\n    // update child nodes\r\n    children.forEach(child => {\r\n      this.UpdateDummyNodes(child, nodeDepth + 1);\r\n    });\r\n  }\r\n\r\n  public createDummyNode(targetDocument: Document, content?: string): Element {\r\n    const dummyNode = targetDocument.createElement('span');\r\n    let dummy2TextNode;\r\n    if (content === undefined) {\r\n      dummy2TextNode = targetDocument.createTextNode(DomDummyNodeManager.DummyNodeContent);\r\n    } else {\r\n      dummy2TextNode = targetDocument.createTextNode(content);\r\n    }\r\n    dummyNode.classList.add(DomDummyNodeManager.DummyNodeClassName);\r\n    dummyNode.appendChild(dummy2TextNode);\r\n    return dummyNode;\r\n  }\r\n}\r\n"]}