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Add Get Current XPath

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This commit also moves some shared code to a common class.

Issue: #85
This commit is contained in:
Josh Johnson 2018-05-29 21:38:11 -04:00
parent af2060dc38
commit 6a92fa96f2
10 changed files with 223 additions and 84 deletions
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99
src/tree-view/xml-tree-data-provider.ts
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@ -7,12 +7,13 @@ import {
import * as path from "path";
import { DOMParser } from "xmldom";
import { Configuration, NativeCommands } from "../common";
import { Configuration, NativeCommands, XmlTraverser } from "../common";
import * as constants from "../constants";
export class XmlTreeDataProvider implements TreeDataProvider<any> {
private _onDidChangeTreeData: EventEmitter<any> = new EventEmitter<any>();
private _xmlDocument: Document;
private _xmlTraverser: XmlTraverser;
constructor(private _context: ExtensionContext) {
window.onDidChangeActiveTextEditor(() => {
@ -38,13 +39,13 @@ export class XmlTreeDataProvider implements TreeDataProvider<any> {
const treeItem = new TreeItem(element.localName);
if (!this._isElement(element)) {
if (!this._xmlTraverser.isElement(element)) {
treeItem.label = `${element.localName} = "${element.nodeValue}"`;
}
else if (enableMetadata) {
const childAttributes = this._getChildAttributeArray(<Element>element);
const childElements = this._getChildElementArray(<Element>element);
const childAttributes = this._xmlTraverser.getChildAttributeArray(<Element>element);
const childElements = this._xmlTraverser.getChildElementArray(<Element>element);
const totalChildren = (childAttributes.length + childElements.length);
if (totalChildren > 0) {
@ -64,7 +65,7 @@ export class XmlTreeDataProvider implements TreeDataProvider<any> {
treeItem.label += ")";
}
if (this._hasSimilarSiblings(<Element>element) && enableSync) {
if (this._xmlTraverser.hasSimilarSiblings(<Element>element) && enableSync) {
treeItem.label += ` [line ${(element as any).lineNumber}]`;
}
}
@ -88,8 +89,8 @@ export class XmlTreeDataProvider implements TreeDataProvider<any> {
this._refreshTree();
}
if (this._isElement(element)) {
return [].concat(this._getChildAttributeArray(<Element>element), this._getChildElementArray(<Element>element));
if (this._xmlTraverser.isElement(element)) {
return [].concat(this._xmlTraverser.getChildAttributeArray(<Element>element), this._xmlTraverser.getChildElementArray(<Element>element));
}
else if (this._xmlDocument) {
@ -102,78 +103,21 @@ export class XmlTreeDataProvider implements TreeDataProvider<any> {
}
getParent(element: Node): Node {
if (!element || !element.parentNode || !element.parentNode.parentNode) {
if ((!element || !element.parentNode || !element.parentNode.parentNode) && !(element as any).ownerElement) {
return undefined;
}
return element.parentNode;
return element.parentNode || (element as any).ownerElement;
}
getNodeAtPosition(position: Position): Node {
return this._getNodeAtPositionCore(position, this._xmlDocument.documentElement);
}
private _getNodeAtPositionCore(position: Position, contextElement: Element): Node {
if (!contextElement) {
return undefined;
}
if (((contextElement as any).lineNumber - 1) === position.line) {
return contextElement;
}
const children = this._getChildElementArray(<Element>contextElement);
let result: Node;
for (let i = 0; i < children.length; i++) {
const child = children[i];
result = this._getNodeAtPositionCore(position, child);
if (result) {
return result;
}
}
return undefined;
}
private _getChildAttributeArray(node: Element): any[] {
if (!node.attributes) {
return [];
}
const array = new Array<any>();
for (let i = 0; i < node.attributes.length; i++) {
array.push(node.attributes[i]);
}
return array;
}
private _getChildElementArray(node: Element): any[] {
if (!node.childNodes) {
return [];
}
const array = new Array<any>();
for (let i = 0; i < node.childNodes.length; i++) {
const child = node.childNodes[i];
if (this._isElement(child)) {
array.push(child);
}
}
return array;
return this._xmlTraverser.getNodeAtPosition(position);
}
private _getIcon(element: Node): any {
let type = "element";
if (!this._isElement(element)) {
if (!this._xmlTraverser.isElement(element)) {
type = "attribute";
}
@ -185,20 +129,6 @@ export class XmlTreeDataProvider implements TreeDataProvider<any> {
return icon;
}
private _hasSimilarSiblings(element: Element): boolean {
if (!element || !element.parentNode) {
return false;
}
const siblings = this._getChildElementArray(<Element>element.parentNode);
return (siblings.filter(x => x.tagName === element.tagName).length > 1);
}
private _isElement(node: Node): boolean {
return (!!node && !!(node as Element).tagName);
}
private _refreshTree(): void {
if (!this.activeEditor || this.activeEditor.document.languageId !== constants.languageIds.xml) {
NativeCommands.setContext(constants.contextKeys.xmlTreeViewEnabled, false);
@ -227,6 +157,11 @@ export class XmlTreeDataProvider implements TreeDataProvider<any> {
this._xmlDocument = new DOMParser().parseFromString("<InvalidDocument />", "text/xml");
}
finally {
this._xmlTraverser = this._xmlTraverser || new XmlTraverser(this._xmlDocument);
this._xmlTraverser.xmlDocument = this._xmlDocument;
}
this._onDidChangeTreeData.fire();
}