Java tutorial
/********************************************************************** * Copyright (c) 2007, 2013 IBM Corporation 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: * IBM Corporation - Initial API and implementation **********************************************************************/ package org.eclipse.wst.server.ui.internal; import java.io.IOException; import java.io.StringReader; import java.util.ArrayList; import java.util.Hashtable; import java.util.Iterator; import org.eclipse.core.runtime.*; import org.eclipse.jface.internal.text.html.HTML2TextReader; import org.eclipse.jface.text.TextPresentation; import org.eclipse.jface.window.ToolTip; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StyleRange; import org.eclipse.swt.custom.StyledText; import org.eclipse.swt.events.*; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.*; import org.eclipse.wst.server.core.*; import org.eclipse.wst.server.ui.IServerModule; import org.eclipse.wst.server.ui.internal.provisional.IServerToolTip; public class ServerToolTip extends ToolTip { protected Hashtable<String, ArrayList<IServerToolTip>> toolTipProviders = new Hashtable<String, ArrayList<IServerToolTip>>(); protected static Shell CURRENT_TOOLTIP; protected Label hintLabel; protected Tree tree; protected int x; protected int y; public ServerToolTip(final Tree tree) { super(tree); this.tree = tree; tree.addMouseMoveListener(new MouseMoveListener() { public void mouseMove(MouseEvent e) { x = e.x; y = e.y; } }); tree.addKeyListener(new KeyListener() { public void keyPressed(KeyEvent e) { if (e == null) return; if (e.keyCode == SWT.ESC) { if (CURRENT_TOOLTIP != null) { CURRENT_TOOLTIP.dispose(); CURRENT_TOOLTIP = null; } activate(); } if (e.keyCode == SWT.F6) { if (CURRENT_TOOLTIP == null) { deactivate(); hide(); createFocusedTooltip(tree); } } } public void keyReleased(KeyEvent e) { // nothing to do } }); loadExtensions(); } public void createFocusedTooltip(final Control control) { final Shell stickyTooltip = new Shell(control.getShell(), SWT.ON_TOP | SWT.TOOL | SWT.NO_FOCUS); stickyTooltip.setLayout(new FillLayout()); stickyTooltip.setBackground(stickyTooltip.getDisplay().getSystemColor(SWT.COLOR_INFO_BACKGROUND)); stickyTooltip.addShellListener(new ShellAdapter() { public void shellClosed(ShellEvent e) { if (CURRENT_TOOLTIP != null) { CURRENT_TOOLTIP.dispose(); CURRENT_TOOLTIP = null; } activate(); } }); control.getDisplay().asyncExec(new Runnable() { public void run() { Event event = new Event(); event.x = x; event.y = y; event.widget = tree; createToolTipContentArea(event, stickyTooltip); stickyTooltip.pack(); stickyTooltip.setLocation(stickyTooltip.getDisplay().getCursorLocation()); hintLabel.setText(Messages.toolTipDisableFocus); stickyTooltip.setVisible(true); // Eventually we want to add a listener that checks if // the mouseDown event is occurring outside of the bounds of the tooltip // if it is, then hide the tooltip // addListener(stickyTooltip); } }); CURRENT_TOOLTIP = stickyTooltip; } // read the createFocusedTooltip method for information on why this is commented out // // private void addListener(Control control){ // control.addMouseListener(new StickyTipMouseListener()); // if (control instanceof Composite){ // Control[] childrens = ((Composite)control).getChildren(); // for (Control child :childrens){ // addListener(child); // } // } // // } @Override protected Object getToolTipArea(Event event) { Object o = tree.getItem(new Point(event.x, event.y)); return o; } protected final boolean shouldCreateToolTip(Event event) { Object o = tree.getItem(new Point(event.x, event.y)); if (o == null) { return false; } IServer server = null; IServerModule module = null; if (o instanceof TreeItem) { Object obj = ((TreeItem) o).getData(); if (obj instanceof IServer) { server = (IServer) obj; } if (obj instanceof IServerModule) { module = (IServerModule) obj; } } // Only enable for supported objects. if (server == null && module == null) { return false; } return super.shouldCreateToolTip(event); } protected Composite createToolTipContentArea(Event event, Composite parent) { Object o = tree.getItem(new Point(event.x, event.y)); if (o == null) return null; IServer server = null; IServerModule module = null; if (o instanceof TreeItem) { Object obj = ((TreeItem) o).getData(); if (obj instanceof IServer) server = (IServer) obj; if (obj instanceof IServerModule) module = (IServerModule) obj; } FillLayout layout = (FillLayout) parent.getLayout(); layout.type = SWT.VERTICAL; parent.setLayout(layout); parent.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_BACKGROUND)); // set the default text for the tooltip StyledText sText = new StyledText(parent, SWT.NONE); sText.setForeground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_FOREGROUND)); sText.setEditable(false); sText.setBackground(parent.getBackground()); if (module != null) { IModule[] modules = module.getModule(); IModule m = modules[modules.length - 1]; sText.setText("<b>" + ServerUtil.getModuleDisplayName(m) + "</b>"); //sText.setText("<b>" + m.getName() + "</b></p>" + m.getModuleType().getName()); StyledText sText2 = new StyledText(parent, SWT.NONE); sText2.setEditable(false); sText2.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_BACKGROUND)); sText2.setForeground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_FOREGROUND)); sText2.setText(m.getModuleType().getName()); } if (server != null) { sText.setText("<b>" + server.getName() + "</b>"); // add adopters content if (server.getServerType() != null) { ArrayList<IServerToolTip> listOfProviders = toolTipProviders.get(server.getServerType().getId()); if (listOfProviders != null) { for (IServerToolTip tipProvider : listOfProviders) { tipProvider.createContent(parent, server); } } } } // add the F3 text hintLabel = new Label(parent, SWT.BORDER); hintLabel.setAlignment(SWT.RIGHT); hintLabel.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_BACKGROUND)); hintLabel.setText(Messages.toolTipEnableFocus); hintLabel.setForeground(parent.getDisplay().getSystemColor(SWT.COLOR_INFO_FOREGROUND)); final Font font; Display display = parent.getDisplay(); FontData[] fd = parent.getFont().getFontData(); int size2 = fd.length; for (int i = 0; i < size2; i++) fd[i].setHeight(7); font = new Font(display, fd); parent.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent e) { font.dispose(); } }); hintLabel.setFont(font); parseText(sText.getText(), sText); return parent; } protected void parseText(String htmlText, StyledText sText) { TextPresentation presentation = new TextPresentation(); HTML2TextReader reader = new HTML2TextReader(new StringReader(htmlText), presentation); String text; try { text = reader.getString(); } catch (IOException e) { text = ""; //$NON-NLS-1$ } sText.setText(text); Iterator iter = presentation.getAllStyleRangeIterator(); while (iter.hasNext()) { StyleRange sr = (StyleRange) iter.next(); sText.setStyleRange(sr); } } private void loadExtensions() { if (Trace.EXTENSION_POINT) { Trace.trace(Trace.STRING_EXTENSION_POINT, "->- Loading serverToolTip extension point ->-"); } // search for extension points IExtensionRegistry reg = Platform.getExtensionRegistry(); IConfigurationElement[] extensions = reg .getConfigurationElementsFor(ServerUIPlugin.PLUGIN_ID + ".serverToolTip"); IServerType[] serverTypes = ServerCore.getServerTypes(); for (int i = 0; i < extensions.length; i++) { IConfigurationElement exElement = extensions[i]; try { // sort the extensions based on serverType String exServerType = exElement.getAttribute("serverTypes"); for (IServerType serverType : serverTypes) { if ("*".equals(exServerType) || serverType.getId().matches(exServerType)) { IServerToolTip exTooltip = (IServerToolTip) exElement.createExecutableExtension("class"); ArrayList<IServerToolTip> listOfProviders = new ArrayList<IServerToolTip>(); if (toolTipProviders.containsKey(serverType.getId())) listOfProviders = toolTipProviders.get(serverType.getId()); listOfProviders.add(exTooltip); toolTipProviders.put(serverType.getId(), listOfProviders); if (Trace.EXTENSION_POINT) { Trace.trace(Trace.STRING_EXTENSION_POINT, " Loaded serverToolTip: " + exElement.getAttribute("id") + " for server type: " + serverType.getId()); } } } } catch (CoreException e) { if (Trace.SEVERE) { Trace.trace(Trace.STRING_SEVERE, "Tooltip failed to load" + exElement.toString(), e); } } } if (Trace.EXTENSION_POINT) { Trace.trace(Trace.STRING_EXTENSION_POINT, "-<- Done loading serverToolTip extension point -<-"); } } // read the createFocusedTooltip method for information on why this is commented out // // protected class StickyTipMouseListener implements MouseListener{ // // public void mouseDoubleClick(MouseEvent e) { // // Auto-generated method stub // // } // // public void mouseDown(MouseEvent e) { // //System.out.println("mouseDown"); // if (CURRENT_TOOLTIP.getBounds().contains(new Point(e.x,e.y)) == true){ // CURRENT_TOOLTIP.setVisible(false); // CURRENT_TOOLTIP.dispose(); // activate(); // CURRENT_TOOLTIP.removeMouseListener(this); // } // } // // public void mouseUp(MouseEvent e) { // // Auto-generated method stub // } // } }