Java tutorial
/******************************************************************************* * Copyright (c) 2011 Red Hat, Inc. * Distributed under license by Red Hat, Inc. All rights reserved. * This program is 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.jboss.tools.cdi.seam.text.ext.hyperlink; import java.util.ArrayList; import java.util.Map; import org.eclipse.core.resources.IFile; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jface.text.IRegion; import org.eclipse.jface.text.ITextViewer; import org.eclipse.jface.text.hyperlink.IHyperlink; import org.eclipse.ui.IEditorInput; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.part.FileEditorInput; import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion; import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement; import org.jboss.tools.cdi.core.CDICoreNature; import org.jboss.tools.cdi.core.CDIUtil; import org.jboss.tools.cdi.seam.config.core.CDISeamConfigExtension; import org.jboss.tools.cdi.seam.config.core.definition.SeamBeansDefinition; import org.jboss.tools.cdi.seam.config.core.definition.SeamFieldDefinition; import org.jboss.tools.cdi.seam.config.core.definition.SeamMemberDefinition; import org.jboss.tools.cdi.seam.config.core.definition.SeamMethodDefinition; import org.jboss.tools.cdi.seam.config.core.util.Util; import org.jboss.tools.cdi.seam.text.ext.CDISeamExtPlugin; import org.jboss.tools.cdi.text.ext.hyperlink.InjectedPointHyperlinkDetector; import org.jboss.tools.common.model.ui.editor.EditorPartWrapper; import org.jboss.tools.common.text.ext.util.StructuredModelWrapper; import org.jboss.tools.common.text.ext.util.Utils; import org.jboss.tools.jst.text.ext.hyperlink.jsp.JSPRootHyperlinkPartitioner; import org.w3c.dom.Document; import org.w3c.dom.Node; public class XMLInjectedPointHyperlinkDetector extends InjectedPointHyperlinkDetector { private static final String INJECT_NAME = "Inject"; private static final String INJECT_URI = "urn:java:ee"; public IHyperlink[] detectHyperlinks(ITextViewer textViewer, IRegion region, boolean canShowMultipleHyperlinks) { this.viewer = textViewer; if (region == null || !canShowMultipleHyperlinks) return null; IEditorPart editor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor(); if (!(editor instanceof EditorPartWrapper)) return null; IEditorInput input = ((EditorPartWrapper) editor).getEditorInput(); if (!(input instanceof FileEditorInput)) return null; file = ((FileEditorInput) input).getFile(); if (file == null) return null; CDICoreNature cdiNature = CDIUtil.getCDINatureWithProgress(file.getProject()); if (cdiNature == null) return null; document = textViewer.getDocument(); ArrayList<IHyperlink> hyperlinks = new ArrayList<IHyperlink>(); Node node = getTagNode(region.getOffset()); if (node == null) return null; int offset = ((IndexedRegion) node).getStartOffset(); String uri = getURI(node); IJavaElement element = null; IType type = Util.resolveType(node.getLocalName(), uri, cdiNature); if (type != null) { element = type; } else { SeamMemberDefinition def = find(cdiNature, offset, file); if (def instanceof SeamFieldDefinition) { element = ((SeamFieldDefinition) def).getField(); } else if (def instanceof SeamMethodDefinition) { element = ((SeamMethodDefinition) def).getMethod(); } } if (element != null) { IFile elementFile = null; try { elementFile = (IFile) element.getUnderlyingResource(); } catch (JavaModelException ex) { CDISeamExtPlugin.getDefault().logError(ex); } if (elementFile != null) findInjectedBeans(cdiNature, element, offset, elementFile.getFullPath(), hyperlinks, editor.isDirty()); if (hyperlinks != null && !hyperlinks.isEmpty()) { return (IHyperlink[]) hyperlinks.toArray(new IHyperlink[hyperlinks.size()]); } } return null; } private Node getTagNode(int offset) { StructuredModelWrapper smw = new StructuredModelWrapper(); smw.init(document); try { Document xmlDocument = smw.getDocument(); if (xmlDocument == null) return null; Node node = Utils.findNodeForOffset(xmlDocument, offset); if (node == null) return null; if (node instanceof IDOMElement) { if (INJECT_NAME.equals(node.getLocalName()) && INJECT_URI.equals(node.getNamespaceURI())) { return node.getParentNode(); } else if (offset >= ((IDOMElement) node).getStartOffset() && offset <= ((IDOMElement) node).getStartEndOffset()) return node; } return null; } finally { smw.dispose(); } } SeamMemberDefinition find(CDICoreNature cdi, int offset, IFile documentFile) { CDISeamConfigExtension ext = CDISeamConfigExtension.getExtension(cdi); if (ext == null) return null; SeamBeansDefinition def = ext.getContext().getDefinition(documentFile.getFullPath()); if (def == null) return null; return def.findExactly(offset); } private String getURI(Node node) { String nodeName = node.getNodeName(); if (nodeName.indexOf(':') == -1) return null; String nodePrefix = nodeName.substring(0, nodeName.indexOf(":")); //$NON-NLS-1$ if (nodePrefix == null || nodePrefix.length() == 0) return null; Map trackers = JSPRootHyperlinkPartitioner.getTrackersMap(document, ((IndexedRegion) node).getStartOffset()); return (String) (trackers == null ? null : trackers.get(nodePrefix)); } }