Java tutorial
/** * Copyright (c) 2009 Anyware Technologies 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: * Anyware Technologies - initial API and implementation * * $Id: RichTooltipHyperlinkAdapter.java,v 1.3 2009/10/23 16:14:22 bcabe Exp $ */ package org.eclipse.pde.emfforms.internal.validation; import java.io.PrintWriter; import java.io.StringWriter; import java.util.*; import java.util.Map.Entry; import java.util.List; import org.apache.commons.lang.StringEscapeUtils; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.CTabFolder; import org.eclipse.swt.custom.CTabItem; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.widgets.*; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.forms.IManagedForm; import org.eclipse.ui.forms.IMessage; import org.eclipse.ui.forms.events.HyperlinkAdapter; import org.eclipse.ui.forms.events.HyperlinkEvent; import org.eclipse.ui.forms.widgets.Form; import org.eclipse.ui.forms.widgets.FormText; public class RichTooltipHyperlinkAdapter extends HyperlinkAdapter { private static final String INFO = "info"; private static final String WARNING = "warning"; private static final String ERROR = "error"; private static final String OTHER_ERRORS = "Other errors"; private IManagedForm _form; private Shell _shell; public RichTooltipHyperlinkAdapter(IManagedForm form) { _form = form; } public void linkActivated(HyperlinkEvent e) { if (_shell != null) { _shell.dispose(); _shell = null; return; } String title = e.getLabel(); // String details = title; Object href = e.getHref(); Point hl = ((Control) e.widget).toDisplay(0, 0); hl.x += 10; hl.y += 20; _shell = new Shell(_form.getForm().getShell(), SWT.ON_TOP | SWT.TOOL); _shell.setImage(getImage(_form.getForm().getMessageType())); _shell.setText(title); GridLayoutFactory.fillDefaults().margins(10, 10).applyTo(_shell); FormText text = _form.getToolkit().createFormText(_shell, true); Label l = new Label(text, SWT.SEPARATOR | SWT.HORIZONTAL); text.setControl("sep", l); GridDataFactory.fillDefaults().applyTo(text); if (href instanceof IMessage[]) { Map<String, List<IMessage>> messagesMap = mapMessages((IMessage[]) href, text); configureFormText(_form.getForm().getForm(), text); text.setText(createFormTextContent(messagesMap), true, false); } _shell.setLocation(hl); _form.getToolkit().adapt(_shell); _shell.pack(); _shell.open(); } private void configureFormText(final Form form, FormText text) { text.addHyperlinkListener(new HyperlinkAdapter() { public void linkActivated(HyperlinkEvent e) { String is = (String) e.getHref(); try { int hashCode = Integer.parseInt(is); IMessage[] messages = form.getChildrenMessages(); IMessage message = null; for (IMessage m : messages) { if (hashCode == m.hashCode()) { message = m; break; } } _shell.dispose(); _shell = null; Control c = message.getControl(); if (c != null) { // try to find the formpage to activate it... // find CTabItem CTabItem item = findCTabItem(c); item.getParent().setSelection(item); c.setFocus(); } } catch (NumberFormatException ex) { } } }); text.setImage(ERROR, getImage(IMessageProvider.ERROR)); text.setImage(WARNING, getImage(IMessageProvider.WARNING)); text.setImage(INFO, getImage(IMessageProvider.INFORMATION)); } private String createFormTextContent(Map<String, List<IMessage>> messagesMap) { StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); pw.println("<form>"); for (Entry<String, List<IMessage>> entry : messagesMap.entrySet()) { if (!entry.getValue().isEmpty()) { if (OTHER_ERRORS.equals(entry.getKey())) { pw.println("<p><control href=\"sep\" fill=\"true\"/></p>"); } pw.println( "<li style=\"image\" value=\"" + entry.getKey() + "\"><b>" + entry.getKey() + "</b></li>"); for (IMessage message : entry.getValue()) { pw.print("<li vspace=\"false\" style=\"image\" bindent=\"10\" indent=\"28\" value=\""); switch (message.getMessageType()) { case IMessageProvider.ERROR: pw.print(ERROR); break; case IMessageProvider.WARNING: pw.print(WARNING); break; case IMessageProvider.INFORMATION: pw.print(INFO); break; } pw.print("\"> <a href=\""); pw.print(message.hashCode() + ""); pw.print("\">"); if (message.getPrefix() != null) pw.print(StringEscapeUtils.escapeHtml(message.getPrefix())); pw.print(StringEscapeUtils.escapeHtml(message.getMessage())); pw.println("</a></li>"); } } } pw.println("</form>"); pw.flush(); return sw.toString(); } private Map<String, List<IMessage>> mapMessages(IMessage[] messages, FormText text) { // find the first message which is associated to a control // and then find its CTabFolder... List<String> pagesNames = new ArrayList<String>(); for (IMessage msg : messages) { if (msg.getControl() != null) { CTabItem item = findCTabItem(msg.getControl()); for (CTabItem it : item.getParent().getItems()) { pagesNames.add(it.getText()); if (it.getImage() != null) { text.setImage(it.getText(), it.getImage()); } } } } Map<String, List<IMessage>> res = new LinkedHashMap<String, List<IMessage>>(); for (String s : pagesNames) { res.put(s, new ArrayList<IMessage>()); } res.put(OTHER_ERRORS, new ArrayList<IMessage>()); for (IMessage msg : messages) { Form container = findFormContainer(msg.getControl()); String key = OTHER_ERRORS; if (container != null) key = container.getText(); res.get(key).add(msg); } return res; } private Image getImage(int type) { switch (type) { case IMessageProvider.ERROR: return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_ERROR_TSK); case IMessageProvider.WARNING: return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_WARN_TSK); case IMessageProvider.INFORMATION: return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_INFO_TSK); } return null; } private static Form findFormContainer(Control control) { if (control == null) return null; if (control instanceof Form) return (Form) control; return findFormContainer(control.getParent()); } private static CTabItem findCTabItem(Control c) { Form container = findFormContainer(c); Composite c1 = container.getParent(); CTabFolder c2 = (CTabFolder) c1.getParent(); for (CTabItem item : c2.getItems()) { if (item.getControl() == c1) { return item; } } return null; } }