| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.codeInsight.completion; |
| |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.codeInsight.lookup.LookupElementBuilder; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiReference; |
| import com.intellij.psi.impl.source.xml.XmlAttributeImpl; |
| import com.intellij.psi.impl.source.xml.XmlAttributeReference; |
| import com.intellij.psi.meta.PsiPresentableMetaData; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.psi.xml.XmlFile; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.util.ProcessingContext; |
| import com.intellij.xml.NamespaceAwareXmlAttributeDescriptor; |
| import com.intellij.xml.XmlAttributeDescriptor; |
| import com.intellij.xml.XmlElementDescriptor; |
| import com.intellij.xml.XmlExtension; |
| import com.intellij.xml.util.HtmlUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import static com.intellij.codeInsight.completion.CompletionInitializationContext.DUMMY_IDENTIFIER_TRIMMED; |
| |
| public class XmlAttributeReferenceCompletionProvider extends CompletionProvider<CompletionParameters> { |
| private static final Logger LOG = Logger.getInstance(XmlAttributeReferenceCompletionProvider.class); |
| |
| @Override |
| protected void addCompletions(@NotNull CompletionParameters parameters, |
| ProcessingContext context, |
| @NotNull CompletionResultSet result) { |
| PsiReference reference = parameters.getPosition().getContainingFile().findReferenceAt(parameters.getOffset()); |
| if (reference instanceof XmlAttributeReference) { |
| addAttributeReferenceCompletionVariants((XmlAttributeReference)reference, result, null); |
| } |
| } |
| |
| public static void addAttributeReferenceCompletionVariants(XmlAttributeReference reference, CompletionResultSet result, |
| @Nullable InsertHandler<LookupElement> replacementInsertHandler) { |
| final XmlTag declarationTag = reference.getElement().getParent(); |
| LOG.assertTrue(declarationTag.isValid()); |
| final XmlElementDescriptor parentDescriptor = declarationTag.getDescriptor(); |
| if (parentDescriptor != null) { |
| final XmlAttribute[] attributes = declarationTag.getAttributes(); |
| XmlAttributeDescriptor[] descriptors = parentDescriptor.getAttributesDescriptors(declarationTag); |
| |
| descriptors = HtmlUtil.appendHtmlSpecificAttributeCompletions(declarationTag, descriptors, reference.getElement()); |
| |
| addVariants(result, attributes, descriptors, reference.getElement(), replacementInsertHandler); |
| } |
| } |
| |
| private static void addVariants(final CompletionResultSet result, |
| final XmlAttribute[] attributes, |
| final XmlAttributeDescriptor[] descriptors, |
| XmlAttribute attribute, |
| @Nullable InsertHandler<LookupElement> replacementInsertHandler) { |
| final XmlTag tag = attribute.getParent(); |
| final PsiFile file = tag.getContainingFile(); |
| final XmlExtension extension = XmlExtension.getExtension(file); |
| final String prefix = attribute.getName().contains(":") && ((XmlAttributeImpl) attribute).getRealLocalName().length() > 0 |
| ? attribute.getNamespacePrefix() + ":" |
| : null; |
| |
| CompletionData |
| completionData = CompletionUtil.getCompletionDataByElement(attribute, attribute.getContainingFile().getOriginalFile()); |
| boolean caseSensitive = !(completionData instanceof HtmlCompletionData) || ((HtmlCompletionData)completionData).isCaseSensitive(); |
| |
| for (XmlAttributeDescriptor descriptor : descriptors) { |
| if (isValidVariant(attribute, descriptor, attributes, extension)) { |
| String name = descriptor.getName(tag); |
| |
| InsertHandler<LookupElement> insertHandler = XmlAttributeInsertHandler.INSTANCE; |
| |
| if (replacementInsertHandler != null) { |
| insertHandler = replacementInsertHandler; |
| } |
| else if (descriptor instanceof NamespaceAwareXmlAttributeDescriptor) { |
| final String namespace = ((NamespaceAwareXmlAttributeDescriptor)descriptor).getNamespace(tag); |
| |
| if (file instanceof XmlFile && |
| namespace != null && |
| namespace.length() > 0 && |
| !name.contains(":") && |
| tag.getPrefixByNamespace(namespace) == null) { |
| insertHandler = new XmlAttributeInsertHandler(namespace); |
| } |
| } |
| if (prefix == null || name.startsWith(prefix)) { |
| if (prefix != null && name.length() > prefix.length()) { |
| name = descriptor.getName(tag).substring(prefix.length()); |
| } |
| LookupElementBuilder element = LookupElementBuilder.create(name); |
| if (descriptor instanceof PsiPresentableMetaData) { |
| element = element.withIcon(((PsiPresentableMetaData)descriptor).getIcon()); |
| } |
| final int separator = name.indexOf(':'); |
| if (separator > 0) { |
| element = element.withLookupString(name.substring(separator + 1)); |
| } |
| element = element |
| .withCaseSensitivity(caseSensitive) |
| .withInsertHandler(insertHandler); |
| result.addElement( |
| descriptor.isRequired() ? PrioritizedLookupElement.withPriority(element.appendTailText("(required)", true), 100) : |
| HtmlUtil.isOwnHtmlAttribute(descriptor) ? PrioritizedLookupElement.withPriority(element, 50) : element); |
| } |
| } |
| } |
| } |
| |
| private static boolean isValidVariant(XmlAttribute attribute, |
| @NotNull XmlAttributeDescriptor descriptor, |
| final XmlAttribute[] attributes, |
| final XmlExtension extension) { |
| if (extension.isIndirectSyntax(descriptor)) return false; |
| String descriptorName = descriptor.getName(attribute.getParent()); |
| if (descriptorName == null) { |
| LOG.error("Null descriptor name for " + descriptor + " " + descriptor.getClass() + " "); |
| return false; |
| } |
| for (final XmlAttribute otherAttr : attributes) { |
| if (otherAttr != attribute && otherAttr.getName().equals(descriptorName)) return false; |
| } |
| return !descriptorName.contains(DUMMY_IDENTIFIER_TRIMMED); |
| } |
| |
| } |