| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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.dltk.internal.ui.text; |
| |
| |
| 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; |
| |
| |
| /** |
| * Provides a set of convenience methods for creating HTML pages. |
| */ |
| public class HTMLPrinter { |
| |
| private 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() { |
| 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; |
| } |
| } |
| } |
| |
| private HTMLPrinter() { |
| } |
| |
| 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 String convertToHTMLContent(String content) { |
| content= replace(content, '&', "&"); //$NON-NLS-1$ |
| content= replace(content, '"', """); //$NON-NLS-1$ |
| content= replace(content, '<', "<"); //$NON-NLS-1$ |
| return replace(content, '>', ">"); //$NON-NLS-1$ |
| } |
| |
| public 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) { |
| } |
| |
| return null; |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position, RGB bgRGB, URL styleSheetURL) { |
| |
| if (bgRGB == null) |
| insertPageProlog(buffer, position, styleSheetURL); |
| else { |
| StringBuffer pageProlog= new StringBuffer(300); |
| |
| pageProlog.append("<html>"); //$NON-NLS-1$ |
| |
| appendStyleSheetURL(pageProlog, styleSheetURL); |
| |
| pageProlog.append("<body text=\"#000000\" bgcolor=\""); //$NON-NLS-1$ |
| appendColor(pageProlog, bgRGB); |
| pageProlog.append("\">"); //$NON-NLS-1$ |
| |
| buffer.insert(position, pageProlog.toString()); |
| } |
| } |
| public static void insertPageProlog(StringBuffer buffer, int position, RGB bgRGB, String styleSheet) { |
| |
| if (bgRGB == null) |
| insertPageProlog(buffer, position, styleSheet); |
| else { |
| StringBuffer pageProlog= new StringBuffer(300); |
| |
| pageProlog.append("<html>"); //$NON-NLS-1$ |
| |
| appendStyleSheetURL(pageProlog, styleSheet); |
| |
| pageProlog.append("<body text=\"#000000\" bgcolor=\""); //$NON-NLS-1$ |
| appendColor(pageProlog, bgRGB); |
| pageProlog.append("\">"); //$NON-NLS-1$ |
| |
| buffer.insert(position, pageProlog.toString()); |
| } |
| } |
| |
| public static void insertStyles(StringBuffer buffer, String[] styles) { |
| if (styles == null || styles.length == 0) |
| return; |
| |
| StringBuffer styleBuf= new StringBuffer(10 * styles.length); |
| for (int i= 0; styles != null && i < styles.length; i++) { |
| styleBuf.append(" style=\""); //$NON-NLS-1$ |
| styleBuf.append(styles[i]); |
| styleBuf.append('"'); |
| } |
| |
| // Find insertion index |
| int index= buffer.indexOf("<body "); //$NON-NLS-1$ |
| if (index == -1) |
| return; |
| |
| buffer.insert(index+5, styleBuf); |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position, RGB bgRGB) { |
| if (bgRGB == null) |
| insertPageProlog(buffer, position); |
| else { |
| StringBuffer pageProlog= new StringBuffer(60); |
| pageProlog.append("<html><body text=\"#000000\" bgcolor=\""); //$NON-NLS-1$ |
| appendColor(pageProlog, bgRGB); |
| pageProlog.append("\">"); //$NON-NLS-1$ |
| buffer.insert(position, pageProlog.toString()); |
| } |
| } |
| |
| private static void appendStyleSheetURL(StringBuffer buffer, String styleSheet) { |
| if (styleSheet == null) |
| return; |
| |
| buffer.append("<head><style CHARSET=\"ISO-8859-1\" TYPE=\"text/css\">"); //$NON-NLS-1$ |
| buffer.append(styleSheet); |
| buffer.append("</style></head>"); //$NON-NLS-1$ |
| } |
| |
| private static void appendStyleSheetURL(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>"); //$NON-NLS-1$ |
| } |
| |
| 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)); |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position) { |
| insertPageProlog(buffer, position, getBgColor()); |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position, URL styleSheetURL) { |
| insertPageProlog(buffer, position, getBgColor(), styleSheetURL); |
| } |
| |
| public static void insertPageProlog(StringBuffer buffer, int position, String styleSheet) { |
| insertPageProlog(buffer, position, getBgColor(), styleSheet); |
| } |
| |
| private static RGB getBgColor() { |
| if (BG_COLOR_RGB != null) |
| return BG_COLOR_RGB; |
| return new RGB(255,255, 225); // RGB value of info bg color on WindowsXP |
| |
| } |
| |
| public static void addPageProlog(StringBuffer buffer) { |
| insertPageProlog(buffer, buffer.length()); |
| } |
| |
| public static void addPageEpilog(StringBuffer buffer) { |
| buffer.append("</font></body></html>"); //$NON-NLS-1$ |
| } |
| |
| public static void startBulletList(StringBuffer buffer) { |
| buffer.append("<ul>"); //$NON-NLS-1$ |
| } |
| |
| public static void endBulletList(StringBuffer buffer) { |
| buffer.append("</ul>"); //$NON-NLS-1$ |
| } |
| |
| 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 addSmallHeader(StringBuffer buffer, String header) { |
| if (header != null) { |
| buffer.append("<h5>"); //$NON-NLS-1$ |
| buffer.append(header); |
| buffer.append("</h5>"); //$NON-NLS-1$ |
| } |
| } |
| |
| public static void addParagraph(StringBuffer buffer, String paragraph) { |
| if (paragraph != null && paragraph.length() > 0 ) { |
| //buffer.append("<p>"); //$NON-NLS-1$ |
| buffer.append(paragraph); |
| } |
| } |
| |
| public static void addParagraph(StringBuffer buffer, Reader paragraphReader) { |
| if (paragraphReader != null) |
| addParagraph(buffer, read(paragraphReader)); |
| } |
| } |