| /* |
| * Copyright 2000-2014 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.featureStatistics.FeatureUsageTracker; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.RangeMarker; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.PsiDocumentManager; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.xml.XmlFile; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.util.IncorrectOperationException; |
| import com.intellij.xml.XmlNamespaceHelper; |
| import com.intellij.xml.XmlElementDescriptor; |
| import com.intellij.xml.XmlExtension; |
| import com.intellij.xml.XmlSchemaProvider; |
| import com.intellij.xml.impl.schema.AnyXmlElementDescriptor; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| |
| /** |
| * @author Dmitry Avdeev |
| */ |
| public class ExtendedTagInsertHandler extends XmlTagInsertHandler { |
| |
| private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.completion.ExtendedTagInsertHandler"); |
| |
| protected final String myElementName; |
| @Nullable protected final String myNamespace; |
| @Nullable protected final String myNamespacePrefix; |
| |
| public ExtendedTagInsertHandler(final String elementName, @Nullable final String namespace, @Nullable final String namespacePrefix) { |
| myElementName = elementName; |
| myNamespace = namespace; |
| myNamespacePrefix = namespacePrefix; |
| } |
| |
| @Override |
| public void handleInsert(final InsertionContext context, final LookupElement item) { |
| |
| final XmlFile contextFile = (XmlFile)context.getFile(); |
| final XmlExtension extension = XmlExtension.getExtension(contextFile); |
| final XmlFile file = extension.getContainingFile(contextFile); |
| final Project project = context.getProject(); |
| |
| assert file != null; |
| final PsiElement psiElement = file.findElementAt(context.getStartOffset()); |
| assert psiElement != null; |
| if (isNamespaceBound(psiElement)) { |
| doDefault(context, item); |
| return; |
| } |
| |
| final Editor editor = context.getEditor(); |
| final Document document = editor.getDocument(); |
| PsiDocumentManager.getInstance(project).commitDocument(document); |
| |
| final int caretOffset = editor.getCaretModel().getOffset(); |
| final RangeMarker caretMarker = document.createRangeMarker(caretOffset, caretOffset); |
| caretMarker.setGreedyToRight(true); |
| |
| final XmlNamespaceHelper.Runner<String, IncorrectOperationException> runAfter = |
| new XmlNamespaceHelper.Runner<String, IncorrectOperationException>() { |
| |
| @Override |
| public void run(final String namespacePrefix) { |
| |
| PsiDocumentManager.getInstance(project).commitDocument(document); |
| final PsiElement element = file.findElementAt(context.getStartOffset()); |
| if (element != null) { |
| qualifyWithPrefix(namespacePrefix, element, document); |
| PsiDocumentManager.getInstance(project).commitDocument(document); |
| } |
| editor.getCaretModel().moveToOffset(caretMarker.getEndOffset()); |
| PsiDocumentManager.getInstance(project).doPostponedOperationsAndUnblockDocument(document); |
| doDefault(context, item); |
| } |
| }; |
| |
| try { |
| final String prefixByNamespace = getPrefixByNamespace(file, myNamespace); |
| if (myNamespacePrefix != null || StringUtil.isEmpty(prefixByNamespace)) { |
| final String nsPrefix = myNamespacePrefix == null ? suggestPrefix(file, myNamespace) : myNamespacePrefix; |
| XmlNamespaceHelper.getHelper(file).insertNamespaceDeclaration(file, editor, Collections.singleton(myNamespace), nsPrefix, runAfter); |
| FeatureUsageTracker.getInstance().triggerFeatureUsed(XmlCompletionContributor.TAG_NAME_COMPLETION_FEATURE); |
| } else { |
| runAfter.run(prefixByNamespace); // qualify && complete |
| } |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| |
| protected void doDefault(final InsertionContext context, final LookupElement item) { |
| ExtendedTagInsertHandler.super.handleInsert(context, item); |
| } |
| |
| protected boolean isNamespaceBound(PsiElement psiElement) { |
| PsiElement parent = psiElement.getParent(); |
| if (!(parent instanceof XmlTag)) return false; |
| final XmlTag tag = (XmlTag)parent; |
| final XmlElementDescriptor tagDescriptor = tag.getDescriptor(); |
| final String tagNamespace = tag.getNamespace(); |
| assert myNamespace != null; |
| return tagDescriptor != null && !(tagDescriptor instanceof AnyXmlElementDescriptor) && myNamespace.equals(tagNamespace); |
| } |
| |
| @Nullable |
| public static String getPrefixByNamespace(XmlFile file, final String namespace) { |
| final XmlTag tag = file.getRootTag(); |
| return tag == null ? null : tag.getPrefixByNamespace(namespace); |
| } |
| |
| @Nullable |
| public static String suggestPrefix(XmlFile file, @Nullable String namespace) { |
| if (namespace == null) { |
| return null; |
| } |
| for (XmlSchemaProvider provider : XmlSchemaProvider.getAvailableProviders(file)) { |
| String prefix = provider.getDefaultPrefix(namespace, file); |
| if (prefix != null) { |
| return prefix; |
| } |
| } |
| return null; |
| } |
| |
| protected Set<String> getNamespaces(final XmlFile file) { |
| return XmlNamespaceHelper.getHelper(file).getNamespacesByTagName(myElementName, file); |
| } |
| |
| protected void qualifyWithPrefix(final String namespacePrefix, final PsiElement element, final Document document) { |
| qualifyWithPrefix(namespacePrefix, element); |
| } |
| |
| public static void qualifyWithPrefix(final String namespacePrefix, final PsiElement element) { |
| final PsiElement tag = element.getParent(); |
| if (tag instanceof XmlTag) { |
| final String prefix = ((XmlTag)tag).getNamespacePrefix(); |
| if (!prefix.equals(namespacePrefix) && StringUtil.isNotEmpty(namespacePrefix)) { |
| final String name = namespacePrefix + ":" + ((XmlTag)tag).getLocalName(); |
| try { |
| ((XmlTag)tag).setName(name); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| } |
| } |
| } |