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XSI attributes are provided as completion items
Fixes eclipse#163 Signed-off-by: Nikolas Komonen <[email protected]>
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org.eclipse.lsp4xml/src/main/java/org/eclipse/lsp4xml/services/XSISchemaModel.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| /** | ||
| * Copyright (c) 2018 Red Hat, Inc. and others. | ||
| * All rights reserved. This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Public License v1.0 | ||
| * which accompanies this distribution, and is available at | ||
| * http://www.eclipse.org/legal/epl-v10.html | ||
| * | ||
| * Contributors: | ||
| * Red Hat Inc. - initial API and implementation | ||
| */ | ||
| package org.eclipse.lsp4xml.services; | ||
|
|
||
| import org.eclipse.lsp4j.CompletionItem; | ||
| import org.eclipse.lsp4j.CompletionItemKind; | ||
| import org.eclipse.lsp4j.InsertTextFormat; | ||
| import org.eclipse.lsp4j.Range; | ||
| import org.eclipse.lsp4j.TextEdit; | ||
| import org.eclipse.lsp4xml.dom.Element; | ||
| import org.eclipse.lsp4xml.dom.XMLDocument; | ||
| import org.eclipse.lsp4xml.services.extensions.ICompletionRequest; | ||
| import org.eclipse.lsp4xml.services.extensions.ICompletionResponse; | ||
|
|
||
| /** | ||
| * This class holds values that represent the XSI xsd. | ||
| * Can be seen at https://www.w3.org/2001/XMLSchema-instance | ||
| */ | ||
| public class XSISchemaModel { | ||
|
|
||
| public static void computeCompletionResponses(ICompletionRequest request, | ||
| ICompletionResponse response, Range editRange, XMLDocument document) { | ||
| String snippet = ""; | ||
| boolean isSnippetsSupported = request.getCompletionSettings().isCompletionSnippetsSupported(); | ||
| if(request.getCompletionSettings().isCompletionSnippetsSupported()) { | ||
| snippet = "$0"; | ||
| } | ||
| String actualPrefix = document.getSchemaInstancePrefix(); | ||
| String name; | ||
| String documentation; | ||
| Element root = document.getDocumentElement(); | ||
| boolean schemaLocationExists = document.hasSchemaLocation(); | ||
| boolean noNamespaceSchemaLocationExists = document.hasNoNamespaceSchemaLocation(); | ||
| //Indicates that no values are allowed inside an XML element | ||
| if(!attributeAlreadyExists(root, actualPrefix, "nil")) { | ||
| name = actualPrefix + ":nil"; | ||
| documentation = "Indicates that no values are allowed inside an XML element"; | ||
| String nilSnippet = "true" + snippet; | ||
| createCompletionItem(name, isSnippetsSupported, nilSnippet, editRange, response, documentation); | ||
| } | ||
| //Signals that an element should be accepted as ·valid· when it has no content despite | ||
| //a content type which does not require or even necessarily allow empty content. | ||
| //An element may be ·valid· without content if it has the attribute xsi:nil with | ||
| //the value true. | ||
| if(!attributeAlreadyExists(root, actualPrefix, "type")) { | ||
| documentation = "Signals that an element should be accepted as `valid` when it has no content despite" + | ||
| "a content type which does not require or even necessarily allow empty content."; | ||
| name = actualPrefix + ":type"; | ||
| createCompletionItem(name, isSnippetsSupported, snippet, editRange, response, documentation); | ||
| } | ||
| //The xsi:schemaLocation and xsi:noNamespaceSchemaLocation attributes can be used in a document | ||
| //to provide hints as to the physical location of schema documents which may be used for ·assessment·. | ||
| if(!schemaLocationExists && !noNamespaceSchemaLocationExists) { | ||
| documentation = "The xsi:schemaLocation and xsi:noNamespaceSchemaLocation attributes can be used in a document " + | ||
| "to provide hints as to the physical location of schema documents which may be used for ·assessment·."; | ||
| name = actualPrefix + ":schemaLocation"; | ||
| createCompletionItem(name, isSnippetsSupported, snippet, editRange, response, documentation); | ||
|
|
||
| name = actualPrefix + ":noNamespaceSchemaLocation"; | ||
| createCompletionItem(name, isSnippetsSupported, snippet, editRange, response, documentation); } | ||
| } | ||
|
|
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| private static void createCompletionItem(String text, boolean isSnippetsSupported, | ||
| String defaultAndSnippet, Range editRange, ICompletionResponse response, String documentation) { | ||
| CompletionItem item = new CompletionItem(); | ||
| item.setLabel(text); | ||
| item.setKind(CompletionItemKind.Value); | ||
| item.setFilterText(text); | ||
| item.setInsertTextFormat(isSnippetsSupported ? InsertTextFormat.Snippet : InsertTextFormat.PlainText); | ||
| item.setTextEdit(new TextEdit(editRange, text + "=\"" + defaultAndSnippet + "\"")); | ||
| item.setDocumentation(documentation); | ||
| response.addCompletionItem(item); | ||
| } | ||
|
|
||
| private static boolean attributeAlreadyExists(Element root, String actualPrefix, String suffix) { | ||
| return root.getAttributeNode(actualPrefix + ":" + suffix) != null; | ||
| } | ||
| } |
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