| /******************************************************************************* |
| * Copyright (c) 2004 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.jsdt.web.ui.internal.taginfo; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.net.URL; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.SWTError; |
| import org.eclipse.swt.graphics.RGB; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.wst.jsdt.web.ui.internal.Logger; |
| |
| /** |
| * Provides a set of convenience methods for creating HTML pages. |
| * |
| * Based on org.eclipse.wst.jsdt.internal.ui.text.HTMLPrinter |
| */ |
| class HTMLPrinter { |
| static RGB BG_COLOR_RGB = null; |
| static { |
| final Display display = Display.getDefault(); |
| if (display != null && !display.isDisposed()) { |
| try { |
| display.asyncExec(new Runnable() { |
| /* |
| * @see java.lang.Runnable#run() |
| */ |
| public void run() { |
| HTMLPrinter.BG_COLOR_RGB = display.getSystemColor(SWT.COLOR_INFO_BACKGROUND).getRGB(); |
| } |
| }); |
| } catch (SWTError err) { |
| // see: https://bugs.eclipse.org/bugs/show_bug.cgi?id=45294 |
| if (err.code != SWT.ERROR_DEVICE_DISPOSED) { |
| throw err; |
| } |
| } |
| } |
| } |
| |
| public static void addBullet(StringBuffer buffer, String bullet) { |
| if (bullet != null) { |
| buffer.append("<li>"); //$NON-NLS-1$ |
| buffer.append(bullet); |
| buffer.append("</li>"); //$NON-NLS-1$ |
| } |
| } |
| |
| public static void addPageEpilog(StringBuffer buffer) { |
| buffer.append("</font></body></html>"); //$NON-NLS-1$ |
| } |
| |
| public static void addPageProlog(StringBuffer buffer) { |
| HTMLPrinter.insertPageProlog(buffer, buffer.length()); |
| } |
| |
| public static void addParagraph(StringBuffer buffer, Reader paragraphReader) { |
| if (paragraphReader != null) { |
| HTMLPrinter.addParagraph(buffer, HTMLPrinter.read(paragraphReader)); |
| } |
| } |
| |
| public static void addParagraph(StringBuffer buffer, String paragraph) { |
| if (paragraph != null) { |
| buffer.append("<p>"); //$NON-NLS-1$ |
| buffer.append(paragraph); |
| } |
| } |
| |
| public static void addSmallHeader(StringBuffer buffer, String header) { |
| if (header != null) { |
| buffer.append("<h5>"); //$NON-NLS-1$ |
| buffer.append(header); |
| buffer.append("</h5>"); //$NON-NLS-1$ |
| } |
| } |
| |
| private static void appendColor(StringBuffer buffer, RGB rgb) { |
| buffer.append('#'); |
| buffer.append(Integer.toHexString(rgb.red)); |
| buffer.append(Integer.toHexString(rgb.green)); |
| buffer.append(Integer.toHexString(rgb.blue)); |
| } |
| |
| private static void appendStyleSheetLink(StringBuffer buffer, URL styleSheetURL) { |
| if (styleSheetURL == null) { |
| return; |
| } |
| buffer.append("<head>"); //$NON-NLS-1$ |
| buffer.append("<LINK REL=\"stylesheet\" HREF= \""); //$NON-NLS-1$ |
| buffer.append(styleSheetURL); |
| buffer.append("\" CHARSET=\"ISO-8859-1\" TYPE=\"text/css\">"); //$NON-NLS-1$ |
| buffer.append("</head>"); //$NON-NLS-1$ |
| } |
| |
| public static String convertToHTMLContent(String content) { |
| content = HTMLPrinter.replace(content, '&', "&"); //$NON-NLS-1$ |
| content = HTMLPrinter.replace(content, '"', """); //$NON-NLS-1$ |
| content = HTMLPrinter.replace(content, '<', "<"); //$NON-NLS-1$ |
| return HTMLPrinter.replace(content, '>', ">"); //$NON-NLS-1$ |
| } |
| |
| public static void endBulletList(StringBuffer buffer) { |
| buffer.append("</ul>"); //$NON-NLS-1$ |
| } |
| |
| private static RGB getBgColor() { |
| if (HTMLPrinter.BG_COLOR_RGB != null) { |
| return HTMLPrinter.BG_COLOR_RGB; |
| } |
| // RGB value of info bg color on WindowsXP |
| return new RGB(255, 255, 225); |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position) { |
| HTMLPrinter.insertPageProlog(buffer, position, HTMLPrinter.getBgColor()); |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position, RGB bgRGB) { |
| if (bgRGB == null) { |
| HTMLPrinter.insertPageProlog(buffer, position); |
| } else { |
| StringBuffer pageProlog = new StringBuffer(60); |
| pageProlog.append("<html><body text=\"#000000\" bgcolor=\""); //$NON-NLS-1$ |
| HTMLPrinter.appendColor(pageProlog, bgRGB); |
| pageProlog.append("\"><font size=-1>"); //$NON-NLS-1$ |
| buffer.insert(position, pageProlog.toString()); |
| } |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position, RGB bgRGB, URL styleSheetURL) { |
| if (bgRGB == null) { |
| HTMLPrinter.insertPageProlog(buffer, position, styleSheetURL); |
| } else { |
| StringBuffer pageProlog = new StringBuffer(300); |
| pageProlog.append("<html>"); //$NON-NLS-1$ |
| HTMLPrinter.appendStyleSheetLink(pageProlog, styleSheetURL); |
| pageProlog.append("<body text=\"#000000\" bgcolor=\""); //$NON-NLS-1$ |
| HTMLPrinter.appendColor(pageProlog, bgRGB); |
| pageProlog.append("\"><font size=-1>"); //$NON-NLS-1$ |
| buffer.insert(position, pageProlog.toString()); |
| } |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position, URL styleSheetURL) { |
| HTMLPrinter.insertPageProlog(buffer, position, HTMLPrinter.getBgColor(), styleSheetURL); |
| } |
| |
| static String read(Reader rd) { |
| StringBuffer buffer = new StringBuffer(); |
| char[] readBuffer = new char[2048]; |
| try { |
| int n = rd.read(readBuffer); |
| while (n > 0) { |
| buffer.append(readBuffer, 0, n); |
| n = rd.read(readBuffer); |
| } |
| return buffer.toString(); |
| } catch (IOException x) { |
| // never expected |
| Logger.log(Logger.WARNING_DEBUG, x.getMessage(), x); |
| } |
| return null; |
| } |
| |
| private static String replace(String text, char c, String s) { |
| int previous = 0; |
| int current = text.indexOf(c, previous); |
| if (current == -1) { |
| return text; |
| } |
| StringBuffer buffer = new StringBuffer(); |
| while (current > -1) { |
| buffer.append(text.substring(previous, current)); |
| buffer.append(s); |
| previous = current + 1; |
| current = text.indexOf(c, previous); |
| } |
| buffer.append(text.substring(previous)); |
| return buffer.toString(); |
| } |
| |
| public static void startBulletList(StringBuffer buffer) { |
| buffer.append("<ul>"); //$NON-NLS-1$ |
| } |
| |
| private HTMLPrinter() { |
| // nothing |
| } |
| } |