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Add support for
textDocument/documentHighlight for DTD
Fixes #545 Signed-off-by: azerr <[email protected]>
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98 changes: 98 additions & 0 deletions
98
...main/java/org/eclipse/lsp4xml/extensions/dtd/participants/DTDHighlightingParticipant.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2019 Red Hat Inc. and others. | ||
| * All rights reserved. This program and the accompanying materials | ||
| * which accompanies this distribution, and is available at | ||
| * http://www.eclipse.org/legal/epl-v20.html | ||
| * | ||
| * Contributors: | ||
| * Red Hat Inc. - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.eclipse.lsp4xml.extensions.dtd.participants; | ||
|
|
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| import java.util.List; | ||
|
|
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| import org.eclipse.lsp4j.DocumentHighlight; | ||
| import org.eclipse.lsp4j.DocumentHighlightKind; | ||
| import org.eclipse.lsp4j.Position; | ||
| import org.eclipse.lsp4j.jsonrpc.CancelChecker; | ||
| import org.eclipse.lsp4xml.dom.DOMNode; | ||
| import org.eclipse.lsp4xml.dom.DTDAttlistDecl; | ||
| import org.eclipse.lsp4xml.dom.DTDDeclParameter; | ||
| import org.eclipse.lsp4xml.dom.DTDElementDecl; | ||
| import org.eclipse.lsp4xml.extensions.dtd.utils.DTDUtils; | ||
| import org.eclipse.lsp4xml.services.extensions.IHighlightingParticipant; | ||
| import org.eclipse.lsp4xml.utils.XMLPositionUtility; | ||
|
|
||
| /** | ||
| * DTD highlight participant | ||
| * | ||
| * @author Angelo ZERR | ||
| * | ||
| */ | ||
|
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| public class DTDHighlightingParticipant implements IHighlightingParticipant { | ||
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| @Override | ||
| public void findDocumentHighlights(DOMNode node, Position position, int offset, List<DocumentHighlight> highlights, | ||
| CancelChecker cancelChecker) { | ||
| boolean findReferences = false; | ||
| DTDDeclParameter parameter = null; | ||
| DTDElementDecl elementDecl = null; | ||
|
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| if (node.isDTDElementDecl()) { | ||
| elementDecl = (DTDElementDecl) node; | ||
| if (elementDecl.isInNameParameter(offset)) { | ||
| // <!ELEMENT na|me --> here cursor is in the name of <!ELEMENT | ||
| // we must find all references from the <!ELEMENT which defines the name | ||
| findReferences = true; | ||
| parameter = elementDecl.getNameParameter(); | ||
| } else { | ||
| // <!ELEMENT name (chi|ld --> here cursor is in the child element | ||
| // we must find only the <!ELEMENT child | ||
| parameter = elementDecl.getParameterAt(offset); | ||
| } | ||
| } else if (node.isDTDAttListDecl()) { | ||
| DTDAttlistDecl attlistDecl = (DTDAttlistDecl) node; | ||
| if (attlistDecl.isInNameParameter(offset)) { | ||
| // <!ATTLIST na|me --> here cusror is in the name of <!ATTLIST | ||
| // we must find only the <!ELEMENT name | ||
| parameter = attlistDecl.getNameParameter(); | ||
| } | ||
| } | ||
|
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| if (parameter == null) { | ||
| return; | ||
| } | ||
|
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| if (findReferences) { | ||
| // case with <!ELEMENT na|me | ||
|
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| // highlight <!ELEMENT na|me | ||
| DTDDeclParameter originNode = parameter; | ||
| highlights.add( | ||
| new DocumentHighlight(XMLPositionUtility.createRange(originNode), DocumentHighlightKind.Write)); | ||
|
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| // highlight all references of na|me in ATTLIST and child of <!ELEMENT | ||
| DTDUtils.searchDTDOriginElementDecls(elementDecl, (origin, target) -> { | ||
| highlights | ||
| .add(new DocumentHighlight(XMLPositionUtility.createRange(origin), DocumentHighlightKind.Read)); | ||
| }, cancelChecker); | ||
| } else { | ||
| // case with | ||
| // - <!ELEMENT name (chi|ld | ||
| // - <!ATTLIST na|me | ||
|
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| // highlight <!ELEMENT name (chi|ld or <!ATTLIST na|me | ||
| DTDDeclParameter targetNode = parameter; | ||
| highlights | ||
| .add(new DocumentHighlight(XMLPositionUtility.createRange(targetNode), DocumentHighlightKind.Read)); | ||
|
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| // highlight the target <!ELEMENT nam|e | ||
| DTDUtils.searchDTDTargetElementDecl(parameter, true, targetName -> { | ||
| highlights.add( | ||
| new DocumentHighlight(XMLPositionUtility.createRange(targetName), DocumentHighlightKind.Write)); | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| } |
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