Java tutorial
/******************************************************************************* * Copyright (c) 2013 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.common.el.ui.internal.info; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.Reader; import java.io.StringReader; import java.net.MalformedURLException; import java.net.URI; import java.net.URISyntaxException; import java.net.URL; import java.text.MessageFormat; import java.util.Arrays; import java.util.List; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.Assert; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.FileLocator; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Platform; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IMember; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.internal.ui.JavaPlugin; import org.eclipse.jdt.internal.ui.JavaPluginImages; import org.eclipse.jdt.internal.ui.actions.OpenBrowserUtil; import org.eclipse.jdt.internal.ui.actions.SimpleSelectionProvider; import org.eclipse.jdt.internal.ui.infoviews.JavadocView; import org.eclipse.jdt.internal.ui.text.java.hover.JavadocBrowserInformationControlInput; import org.eclipse.jdt.internal.ui.text.java.hover.JavadocHover; import org.eclipse.jdt.internal.ui.text.javadoc.JavadocContentAccess2; import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels; import org.eclipse.jdt.internal.ui.viewsupport.JavaElementLinks; import org.eclipse.jdt.ui.JavaElementLabels; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jdt.ui.actions.OpenAttachedJavadocAction; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.ToolBarManager; import org.eclipse.jface.internal.text.html.BrowserInformationControl; import org.eclipse.jface.internal.text.html.BrowserInformationControlInput; import org.eclipse.jface.internal.text.html.BrowserInput; import org.eclipse.jface.internal.text.html.HTMLPrinter; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.text.AbstractReusableInformationControlCreator; import org.eclipse.jface.text.DefaultInformationControl; import org.eclipse.jface.text.IInformationControl; import org.eclipse.jface.text.IInformationControlCreator; import org.eclipse.jface.text.IInformationControlExtension4; import org.eclipse.jface.text.IInputChangedListener; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.browser.LocationEvent; import org.eclipse.swt.browser.LocationListener; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchPart; import org.eclipse.ui.IWorkbenchSite; import org.eclipse.ui.IWorkbenchWindow; import org.eclipse.ui.PartInitException; import org.eclipse.ui.PlatformUI; import org.eclipse.wst.xml.ui.internal.taginfo.XMLTagInfoHoverProcessor; import org.jboss.tools.common.el.ui.ElUiPlugin; import org.jboss.tools.common.el.ui.ca.ELProposalProcessor; import org.jboss.tools.common.model.XModelObject; import org.jboss.tools.common.model.filesystems.impl.JarSystemImpl; import org.osgi.framework.Bundle; /** * A utility class for Hover Info and Content Assist Additional Info creation * * @author Victor V. Rubezhny * */ @SuppressWarnings("restriction") public class ELInfoHover extends XMLTagInfoHoverProcessor { private IInformationControlCreator fHoverControlCreator; private IInformationControlCreator fPresenterControlCreator; /* * @see org.eclipse.jdt.internal.ui.text.java.hover.AbstractJavaEditorTextHover#getInformationPresenterControlCreator() */ public IInformationControlCreator getInformationPresenterControlCreator() { final boolean[] browserInformationControlAvailable = new boolean[] { false }; Display.getDefault().syncExec(new Runnable() { @Override public void run() { Shell shell = JavaPlugin.getActiveWorkbenchShell(); browserInformationControlAvailable[0] = (shell != null && BrowserInformationControl.isAvailable(shell)); } }); if (!browserInformationControlAvailable[0]) return null; if (fPresenterControlCreator == null) fPresenterControlCreator = new PresenterControlCreator(getSite()); return fPresenterControlCreator; } /* * @see ITextHoverExtension#getHoverControlCreator() */ @Override public IInformationControlCreator getHoverControlCreator() { if (fHoverControlCreator == null) fHoverControlCreator = new HoverControlCreator(getInformationPresenterControlCreator(), null); return fHoverControlCreator; } public static Object getHoverInfo(String info, IProgressMonitor monitor) { if (info != null && info.length() > 0) { StringBuffer buffer = new StringBuffer(); HTMLPrinter.insertPageProlog(buffer, 0, getCSSStyles()); buffer.append(info.trim()); HTMLPrinter.addPageEpilog(buffer); return new ELBrowserInformationControlInput(null, null, processLinks(buffer.toString()), 0); } return null; } public static Object getHoverInfo(IJavaElement[] javaElements, IProgressMonitor monitor) { if (javaElements != null && javaElements.length > 0) { Arrays.sort(javaElements, ELProposalProcessor.CASE_INSENSITIVE_ORDER); return new ELBrowserInformationControlInput(null, javaElements, processLinks(extractProposalContextInfo(javaElements)), 0); } return null; } public static Object getHoverInfo(String baseName, String propertyName, Object allObjects, IProgressMonitor monitor) { String info = extractProposalContextInfo(baseName, propertyName, allObjects); return info != null ? new ELBrowserInformationControlInput(null, null, processLinks(info), 0) : null; } public static IWorkbenchSite getSite() { IWorkbench workBench = ElUiPlugin.getDefault() == null ? null : ElUiPlugin.getDefault().getWorkbench(); IWorkbenchWindow window = workBench == null ? null : workBench.getActiveWorkbenchWindow(); IWorkbenchPage page = window == null ? null : window.getActivePage(); IWorkbenchPart part = page == null ? null : page.getActivePart(); return part == null ? null : part.getSite(); } /* * Extracts the additional proposal information based on Javadoc for the * stored IJavaElement objects */ private static String extractProposalContextInfo(IJavaElement[] elements) { int nResults = elements.length; StringBuffer buffer = new StringBuffer(); boolean hasContents = false; IJavaElement element = null; if (nResults > 1) { for (int i = 0; i < elements.length; i++) { if (elements[i] == null) continue; if (elements[i] instanceof IMember || elements[i].getElementType() == IJavaElement.LOCAL_VARIABLE || elements[i].getElementType() == IJavaElement.TYPE_PARAMETER) { addFullInfo(buffer, elements[i]); buffer.append("<br/>"); //$NON-NLS-1$ hasContents = true; } } } else { element = elements[0]; if (element instanceof IMember || element.getElementType() == IJavaElement.LOCAL_VARIABLE || element.getElementType() == IJavaElement.TYPE_PARAMETER) { addFullInfo(buffer, element); hasContents = true; } } if (!hasContents || buffer.length() == 0) return null; HTMLPrinter.insertPageProlog(buffer, 0, getCSSStyles()); HTMLPrinter.addPageEpilog(buffer); return buffer.toString(); } /* * Adds full information to the additional proposal information * * @param buffer * * @param element * * @return */ private static void addFullInfo(StringBuffer buffer, IJavaElement element) { if (element instanceof IMember) { IMember member = (IMember) element; HTMLPrinter.addSmallHeader(buffer, getInfoText(member)); Reader reader = null; try { String content = JavadocContentAccess2.getHTMLContent(member, true); reader = content == null ? null : new StringReader(content); } catch (JavaModelException ex) { ElUiPlugin.getDefault().logError(ex); } catch (CoreException e) { ElUiPlugin.getDefault().logError(e); } if (reader == null) { reader = new StringReader(Messages.NO_JAVADOC); } if (reader != null) { buffer.append("<br/>"); //$NON-NLS-1$ buffer.append(HTMLPrinter.read(reader)); } } else if (element.getElementType() == IJavaElement.LOCAL_VARIABLE || element.getElementType() == IJavaElement.TYPE_PARAMETER) { HTMLPrinter.addSmallHeader(buffer, getInfoText(element)); } } private static final long LABEL_FLAGS = JavaElementLabels.ALL_FULLY_QUALIFIED | JavaElementLabels.M_PRE_RETURNTYPE | JavaElementLabels.M_PARAMETER_TYPES | JavaElementLabels.M_PARAMETER_NAMES | JavaElementLabels.M_EXCEPTIONS | JavaElementLabels.F_PRE_TYPE_SIGNATURE | JavaElementLabels.M_PRE_TYPE_PARAMETERS | JavaElementLabels.T_TYPE_PARAMETERS | JavaElementLabels.USE_RESOLVED; private static final long LOCAL_VARIABLE_FLAGS = LABEL_FLAGS & ~JavaElementLabels.F_FULLY_QUALIFIED | JavaElementLabels.F_POST_QUALIFIED; private static final long TYPE_PARAMETER_FLAGS = LABEL_FLAGS | JavaElementLabels.TP_POST_QUALIFIED; /* * Returns the label for the IJavaElement objects */ private static String getInfoText(IJavaElement element) { long flags; switch (element.getElementType()) { case IJavaElement.LOCAL_VARIABLE: flags = LOCAL_VARIABLE_FLAGS; break; case IJavaElement.TYPE_PARAMETER: flags = TYPE_PARAMETER_FLAGS; break; default: flags = LABEL_FLAGS; break; } return JavadocHover.getImageAndLabel(element, true, JavaElementLinks.getElementLabel(element, flags, true)); } /* * Extracts the additional proposal information based on Javadoc for the * stored IJavaElement objects */ private static String extractProposalContextInfo(String baseName, String propertyName, Object allObjects) { Assert.isTrue(allObjects instanceof List<?>); String info = getELMessagesHoverInternal(baseName, propertyName, (List<XModelObject>) allObjects); if (info == null) return null; StringBuffer buffer = new StringBuffer(); buffer.append(info); if (buffer.length() == 0) return null; HTMLPrinter.insertPageProlog(buffer, 0, getCSSStyles()); HTMLPrinter.addPageEpilog(buffer); return buffer.toString(); } public static String getELMessagesHoverInternal(String baseName, String propertyName, List<XModelObject> objects) { StringBuffer buffer = new StringBuffer(); if (propertyName != null && propertyName.length() > 0) buffer.append(MessageFormat.format(Messages.ELInfoHover_propertyName, propertyName)); if (baseName != null && baseName.length() > 0) buffer.append(MessageFormat.format(Messages.ELInfoHover_baseName, baseName)); if (objects != null) { boolean firstValue = true; for (XModelObject o : objects) { IFile propFile = (IFile) o.getAdapter(IFile.class); String propFilePath = null; if (propFile != null) { propFilePath = propFile.getFullPath().toString(); } else { XModelObject parent = o.getFileType() == XModelObject.FILE ? o : o.getParent(); String path = parent.getPath(); while (parent != null && parent.getFileType() != XModelObject.SYSTEM) { parent = parent.getParent(); } if (parent instanceof JarSystemImpl) { String sysPath = parent.getPath(); path = path.substring(sysPath.length()); String jarPath = ((JarSystemImpl) parent).getLocation(); IResource jar = ResourcesPlugin.getWorkspace().getRoot() .getFileForLocation(new Path(jarPath)); if (jar != null) { jarPath = jar.getFullPath().toString(); } propFilePath = jarPath + "!" + path; //$NON-NLS-1$ } } buffer.append(Messages.ELInfoHover_newLine); if (!firstValue) buffer.append(Messages.ELInfoHover_newLine); else firstValue = false; buffer.append(MessageFormat.format(Messages.ELInfoHover_resourceBundle, propFilePath != null ? propFilePath : Messages.ELInfoHover_resourceBundleNotDefined)); if (propertyName != null) { String value = o.get("VALUE"); //$NON-NLS-1$ boolean addCut = false; if (value != null) { if (value.length() > 100) { // Get first words of value int lastSpace = value.lastIndexOf(' ', 99); if (lastSpace != -1) { value = value.substring(0, lastSpace); } else { // cut as is value = value.substring(0, 100); } addCut = true; } } buffer.append(Messages.ELInfoHover_newLine); buffer.append(MessageFormat.format(Messages.ELInfoHover_resourceBundlePropertyValue, value != null ? value : Messages.ELInfoHover_resourceBundlePropertyValueNotDefined, addCut ? Messages.ELInfoHover_treeDots : "")); //$NON-NLS-1$ } } } return buffer.length() == 0 ? null : buffer.toString(); } private static final String[] PROTOCOLS = { JavaElementLinks.JAVADOC_VIEW_SCHEME, JavaElementLinks.JAVADOC_SCHEME, JavaElementLinks.OPEN_LINK_SCHEME, "http", //$NON-NLS-1$ "https" //$NON-NLS-1$ }; protected static String processLinks(String html) { if (html == null) return ""; //$NON-NLS-1$ String text; try { HTMLAnchorProcessor reader = new HTMLAnchorProcessor(new StringReader(html), PROTOCOLS); text = reader.getString(); reader.close(); } catch (IOException e) { text = ""; //$NON-NLS-1$ } return text; } private static String fCSSStyles; /** * Returns the style information for displaying HTML content. * * @return the CSS styles */ private static String getCSSStyles() { if (fCSSStyles == null) { Bundle bundle = Platform.getBundle(ElUiPlugin.PLUGIN_ID); URL url = bundle.getEntry("/resources/css/ELInfoHoverStyleSheet.css"); //$NON-NLS-1$ if (url != null) { BufferedReader reader = null; try { url = FileLocator.toFileURL(url); reader = new BufferedReader(new InputStreamReader(url.openStream())); StringBuilder buffer = new StringBuilder(200); String line = reader.readLine(); while (line != null) { buffer.append(line); buffer.append('\n'); line = reader.readLine(); } fCSSStyles = buffer.toString(); } catch (IOException ex) { ElUiPlugin.getDefault().logError(ex); } finally { try { if (reader != null) reader.close(); } catch (IOException e) { } } } } String css = fCSSStyles; if (css != null) { FontData fontData = JFaceResources.getFontRegistry().getFontData(JFaceResources.DIALOG_FONT)[0]; css = HTMLPrinter.convertTopLevelFont(css, fontData); } return css; } /** * Hover control creator. */ public static final class HoverControlCreator extends AbstractReusableInformationControlCreator { /** * The information presenter control creator. */ private final IInformationControlCreator fInformationPresenterControlCreator; private String fAffordance = null; /** * @param informationPresenterControlCreator control creator for enriched hover */ public HoverControlCreator(IInformationControlCreator informationPresenterControlCreator, String affordance) { fInformationPresenterControlCreator = informationPresenterControlCreator; fAffordance = affordance; } /* * @see org.eclipse.jdt.internal.ui.text.java.hover.AbstractReusableInformationControlCreator#doCreateInformationControl(org.eclipse.swt.widgets.Shell) */ @Override public IInformationControl doCreateInformationControl(Shell parent) { if (BrowserInformationControl.isAvailable(parent)) { BrowserInformationControl iControl = new BrowserInformationControl(parent, null, fAffordance == null ? Messages.hover_affordance : fAffordance) { /* * @see org.eclipse.jface.text.IInformationControlExtension5#getInformationPresenterControlCreator() */ @Override public IInformationControlCreator getInformationPresenterControlCreator() { return fInformationPresenterControlCreator; } }; addLinkListener(iControl); return iControl; } else { return new DefaultInformationControl(parent, fAffordance == null ? Messages.hover_affordance : fAffordance); } } /* * @see org.eclipse.jdt.internal.ui.text.java.hover.AbstractReusableInformationControlCreator#canReuse(org.eclipse.jface.text.IInformationControl) */ @Override public boolean canReuse(IInformationControl control) { if (!super.canReuse(control)) return false; if (control instanceof IInformationControlExtension4) { ((IInformationControlExtension4) control) .setStatusText(fAffordance == null ? Messages.hover_affordance : fAffordance); } return true; } } /** * Presenter control creator. */ public static final class PresenterControlCreator extends AbstractReusableInformationControlCreator { private final IWorkbenchSite fSite; /** * Creates a new PresenterControlCreator. * * @param site the site or <code>null</code> if none */ public PresenterControlCreator(IWorkbenchSite site) { fSite = site; } /* * @see org.eclipse.jdt.internal.ui.text.java.hover.AbstractReusableInformationControlCreator#doCreateInformationControl(org.eclipse.swt.widgets.Shell) */ @Override public IInformationControl doCreateInformationControl(Shell parent) { if (BrowserInformationControl.isAvailable(parent)) { ToolBarManager tbm = new ToolBarManager(SWT.FLAT); BrowserInformationControl iControl = new BrowserInformationControl(parent, null, tbm); final BackAction backAction = new BackAction(iControl); backAction.setEnabled(false); tbm.add(backAction); final ForwardAction forwardAction = new ForwardAction(iControl); tbm.add(forwardAction); forwardAction.setEnabled(false); final ShowInJavadocViewAction showInJavadocViewAction = new ShowInJavadocViewAction(iControl); tbm.add(showInJavadocViewAction); final OpenDeclarationAction openDeclarationAction = new OpenDeclarationAction(iControl); tbm.add(openDeclarationAction); final SimpleSelectionProvider selectionProvider = new SimpleSelectionProvider(); if (fSite != null) { OpenAttachedJavadocAction openAttachedJavadocAction = new OpenAttachedJavadocAction(fSite); openAttachedJavadocAction.setSpecialSelectionProvider(selectionProvider); openAttachedJavadocAction.setImageDescriptor(JavaPluginImages.DESC_ELCL_OPEN_BROWSER); openAttachedJavadocAction.setDisabledImageDescriptor(JavaPluginImages.DESC_DLCL_OPEN_BROWSER); selectionProvider.addSelectionChangedListener(openAttachedJavadocAction); selectionProvider.setSelection(new StructuredSelection()); tbm.add(openAttachedJavadocAction); } IInputChangedListener inputChangeListener = new IInputChangedListener() { public void inputChanged(Object newInput) { backAction.update(); forwardAction.update(); if (newInput == null) { selectionProvider.setSelection(new StructuredSelection()); } else if (newInput instanceof BrowserInformationControlInput) { BrowserInformationControlInput input = (BrowserInformationControlInput) newInput; Object inputElement = input.getInputElement(); selectionProvider.setSelection(new StructuredSelection(inputElement)); boolean isJavaElementInput = inputElement instanceof IJavaElement; showInJavadocViewAction.setEnabled(isJavaElementInput); openDeclarationAction.setEnabled(isJavaElementInput); } } }; iControl.addInputChangeListener(inputChangeListener); tbm.update(true); addLinkListener(iControl); return iControl; } else { return new DefaultInformationControl(parent, true); } } } private static void addLinkListener(final BrowserInformationControl control) { control.addLocationListener(new LocationListener() { @Override public void changing(LocationEvent event) { String loc = event.location; if ("about:blank".equals(loc)) { //$NON-NLS-1$ return; } event.doit = false; if (loc.startsWith("about:")) { //$NON-NLS-1$ // Relative links should be handled via head > base tag. // If no base is available, links just won't work. return; } URI uri = null; try { uri = new URI(loc); } catch (URISyntaxException e) { ElUiPlugin.getDefault().logError(e); return; } String scheme = uri == null ? null : uri.getScheme(); if (JavaElementLinks.JAVADOC_VIEW_SCHEME.equals(scheme)) { IJavaElement linkTarget = JavaElementLinks.parseURI(uri); if (linkTarget == null) return; handleJavadocViewLink(linkTarget); } else if (JavaElementLinks.JAVADOC_SCHEME.equals(scheme)) { IJavaElement linkTarget = JavaElementLinks.parseURI(uri); if (linkTarget == null) return; handleInlineJavadocLink(linkTarget); } else if (JavaElementLinks.OPEN_LINK_SCHEME.equals(scheme)) { IJavaElement linkTarget = JavaElementLinks.parseURI(uri); if (linkTarget == null) return; handleDeclarationLink(linkTarget); } else if (scheme != null && (scheme.toLowerCase().equalsIgnoreCase("http") || //$NON-NLS-1$ scheme.toLowerCase().equalsIgnoreCase("https"))) { //$NON-NLS-1$ try { if (handleExternalLink(new URL(loc), event.display, true)) return; event.doit = true; } catch (MalformedURLException e) { ElUiPlugin.getDefault().logError(e); } } } /* (non-Javadoc) * @see org.eclipse.jdt.internal.ui.viewsupport.JavaElementLinks.ILinkHandler#handleJavadocViewLink(org.eclipse.jdt.core.IJavaElement) */ public void handleJavadocViewLink(IJavaElement linkTarget) { control.notifyDelayedInputChange(null); control.setVisible(false); control.dispose(); try { JavadocView view = (JavadocView) JavaPlugin.getActivePage().showView(JavaUI.ID_JAVADOC_VIEW); view.setInput(linkTarget); } catch (PartInitException e) { ElUiPlugin.getDefault().logError(e); } } /* (non-Javadoc) * @see org.eclipse.jdt.internal.ui.viewsupport.JavaElementLinks.ILinkHandler#handleInlineJavadocLink(org.eclipse.jdt.core.IJavaElement) */ public void handleInlineJavadocLink(IJavaElement linkTarget) { JavadocBrowserInformationControlInput hoverInfo = JavadocHover.getHoverInfo( new IJavaElement[] { linkTarget }, null, null, (JavadocBrowserInformationControlInput) control.getInput()); if (control.hasDelayedInputChangeListener()) control.notifyDelayedInputChange(hoverInfo); else control.setInput(hoverInfo); } /* (non-Javadoc) * @see org.eclipse.jdt.internal.ui.viewsupport.JavaElementLinks.ILinkHandler#handleDeclarationLink(org.eclipse.jdt.core.IJavaElement) */ public void handleDeclarationLink(IJavaElement linkTarget) { control.notifyDelayedInputChange(null); control.dispose(); //FIXME: should have protocol to hide, rather than dispose try { JavadocHover.openDeclaration(linkTarget); } catch (PartInitException e) { ElUiPlugin.getDefault().logError(e); } catch (JavaModelException e) { ElUiPlugin.getDefault().logError(e); } } boolean handleExternalLink(URL url, Display display, boolean openInExternalBrowser) { control.notifyDelayedInputChange(null); control.dispose(); // Open attached Javadoc links if (openInExternalBrowser) OpenBrowserUtil.openExternal(url, display); else OpenBrowserUtil.open(url, display); return true; } public void changed(LocationEvent event) { } }); } /** * Action to go back to the previous input in the hover control. * * @since 3.4 */ private static final class BackAction extends Action { private final BrowserInformationControl fInfoControl; public BackAction(BrowserInformationControl infoControl) { fInfoControl = infoControl; setText(Messages.ELInfoHover_back); ISharedImages images = PlatformUI.getWorkbench().getSharedImages(); setImageDescriptor(images.getImageDescriptor(ISharedImages.IMG_TOOL_BACK)); setDisabledImageDescriptor(images.getImageDescriptor(ISharedImages.IMG_TOOL_BACK_DISABLED)); update(); } @Override public void run() { BrowserInformationControlInput previous = (BrowserInformationControlInput) fInfoControl.getInput() .getPrevious(); if (previous != null) { fInfoControl.setInput(previous); } } public void update() { BrowserInformationControlInput current = fInfoControl.getInput(); if (current != null && current.getPrevious() != null) { BrowserInput previous = current.getPrevious(); setToolTipText(org.eclipse.jdt.internal.corext.util.Messages.format( Messages.ELInfoHover_back_toElement_toolTip, BasicElementLabels.getJavaElementName(previous.getInputName()))); setEnabled(true); } else { setToolTipText(Messages.ELInfoHover_back); setEnabled(false); } } } /** * Action to go forward to the next input in the hover control. * * @since 3.4 */ private static final class ForwardAction extends Action { private final BrowserInformationControl fInfoControl; public ForwardAction(BrowserInformationControl infoControl) { fInfoControl = infoControl; setText(Messages.ELInfoHover_forward); ISharedImages images = PlatformUI.getWorkbench().getSharedImages(); setImageDescriptor(images.getImageDescriptor(ISharedImages.IMG_TOOL_FORWARD)); setDisabledImageDescriptor(images.getImageDescriptor(ISharedImages.IMG_TOOL_FORWARD_DISABLED)); update(); } @Override public void run() { BrowserInformationControlInput next = (BrowserInformationControlInput) fInfoControl.getInput() .getNext(); if (next != null) { fInfoControl.setInput(next); } } public void update() { BrowserInformationControlInput current = fInfoControl.getInput(); if (current != null && current.getNext() != null) { setToolTipText(org.eclipse.jdt.internal.corext.util.Messages.format( Messages.ELInfoHover_forward_toElement_toolTip, BasicElementLabels.getJavaElementName(current.getNext().getInputName()))); setEnabled(true); } else { setToolTipText(Messages.ELInfoHover_forward_toolTip); setEnabled(false); } } } /** * Action that shows the current hover contents in the Javadoc view. * * @since 3.4 */ private static final class ShowInJavadocViewAction extends Action { private final BrowserInformationControl fInfoControl; public ShowInJavadocViewAction(BrowserInformationControl infoControl) { fInfoControl = infoControl; setText(Messages.ELInfoHover_showInJavadoc); setImageDescriptor(JavaPluginImages.DESC_OBJS_JAVADOCTAG); //TODO: better image } /* * @see org.eclipse.jface.action.Action#run() */ @Override public void run() { JavadocBrowserInformationControlInput infoInput = (JavadocBrowserInformationControlInput) fInfoControl .getInput(); //TODO: check cast fInfoControl.notifyDelayedInputChange(null); fInfoControl.dispose(); //FIXME: should have protocol to hide, rather than dispose try { JavadocView view = (JavadocView) JavaPlugin.getActivePage().showView(JavaUI.ID_JAVADOC_VIEW); view.setInput(infoInput); } catch (PartInitException e) { ElUiPlugin.getDefault().logError(e); } } } /** * Action that opens the current hover input element. * * @since 3.4 */ private static final class OpenDeclarationAction extends Action { private final BrowserInformationControl fInfoControl; public OpenDeclarationAction(BrowserInformationControl infoControl) { fInfoControl = infoControl; setText(Messages.ELInfoHover_openDeclaration); JavaPluginImages.setLocalImageDescriptors(this, "goto_input.gif"); //$NON-NLS-1$ //TODO: better images } /* * @see org.eclipse.jface.action.Action#run() */ @Override public void run() { JavadocBrowserInformationControlInput infoInput = (JavadocBrowserInformationControlInput) fInfoControl .getInput(); //TODO: check cast fInfoControl.notifyDelayedInputChange(null); fInfoControl.dispose(); //FIXME: should have protocol to hide, rather than dispose try { JavadocHover.openDeclaration(infoInput.getElement()); } catch (PartInitException e) { ElUiPlugin.getDefault().logError(e); } catch (JavaModelException e) { ElUiPlugin.getDefault().logError(e); } } } }