1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.awt.BorderLayout;
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7 | import java.awt.EventQueue;
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8 | import java.awt.event.InputEvent;
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9 | import java.awt.event.KeyEvent;
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10 | import java.io.IOException;
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11 | import java.net.URL;
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12 | import java.nio.charset.StandardCharsets;
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13 | import java.util.regex.Matcher;
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14 | import java.util.regex.Pattern;
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15 |
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16 | import javax.swing.JComponent;
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17 | import javax.swing.JPanel;
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18 | import javax.swing.JScrollPane;
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19 | import javax.swing.KeyStroke;
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20 | import javax.swing.border.EmptyBorder;
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21 | import javax.swing.event.HyperlinkEvent;
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22 | import javax.swing.event.HyperlinkListener;
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23 |
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24 | import org.openstreetmap.josm.Main;
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25 | import org.openstreetmap.josm.data.Version;
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26 | import org.openstreetmap.josm.gui.datatransfer.FileTransferHandler;
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27 | import org.openstreetmap.josm.gui.preferences.server.ProxyPreference;
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28 | import org.openstreetmap.josm.gui.preferences.server.ProxyPreferenceListener;
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29 | import org.openstreetmap.josm.gui.widgets.JosmEditorPane;
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30 | import org.openstreetmap.josm.io.CacheCustomContent;
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31 | import org.openstreetmap.josm.io.OnlineResource;
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32 | import org.openstreetmap.josm.tools.LanguageInfo;
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33 | import org.openstreetmap.josm.tools.OpenBrowser;
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34 | import org.openstreetmap.josm.tools.WikiReader;
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35 |
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36 | public final class GettingStarted extends JPanel implements ProxyPreferenceListener {
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37 |
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38 | private final LinkGeneral lg;
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39 | private String content = "";
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40 | private boolean contentInitialized;
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41 |
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42 | private static final String STYLE = "<style type=\"text/css\">\n"
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43 | + "body {font-family: sans-serif; font-weight: bold; }\n"
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44 | + "h1 {text-align: center; }\n"
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45 | + ".icon {font-size: 0; }\n"
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46 | + "</style>\n";
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47 |
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48 | public static class LinkGeneral extends JosmEditorPane implements HyperlinkListener {
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49 |
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50 | /**
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51 | * Constructs a new {@code LinkGeneral} with the given HTML text
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52 | * @param text The text to display
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53 | */
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54 | public LinkGeneral(String text) {
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55 | setContentType("text/html");
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56 | setText(text);
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57 | setEditable(false);
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58 | setOpaque(false);
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59 | addHyperlinkListener(this);
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60 | adaptForNimbus(this);
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61 | }
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62 |
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63 | @Override
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64 | public void hyperlinkUpdate(HyperlinkEvent e) {
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65 | if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
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66 | OpenBrowser.displayUrl(e.getDescription());
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67 | }
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68 | }
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69 | }
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70 |
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71 | /**
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72 | * Grabs current MOTD from cache or webpage and parses it.
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73 | */
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74 | private static class MotdContent extends CacheCustomContent<IOException> {
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75 | MotdContent() {
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76 | super("motd.html", CacheCustomContent.INTERVAL_DAILY);
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77 | }
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78 |
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79 | private final int myVersion = Version.getInstance().getVersion();
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80 | private final String myJava = System.getProperty("java.version");
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81 | private final String myLang = LanguageInfo.getWikiLanguagePrefix();
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82 |
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83 | /**
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84 | * This function gets executed whenever the cached files need updating
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85 | * @see org.openstreetmap.josm.io.CacheCustomContent#updateData()
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86 | */
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87 | @Override
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88 | protected byte[] updateData() throws IOException {
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89 | String motd = new WikiReader().readLang("StartupPage");
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90 | // Save this to prefs in case JOSM is updated so MOTD can be refreshed
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91 | Main.pref.putInteger("cache.motd.html.version", myVersion);
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92 | Main.pref.put("cache.motd.html.java", myJava);
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93 | Main.pref.put("cache.motd.html.lang", myLang);
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94 | return motd.getBytes(StandardCharsets.UTF_8);
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95 | }
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96 |
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97 | @Override
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98 | protected void checkOfflineAccess() {
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99 | OnlineResource.JOSM_WEBSITE.checkOfflineAccess(new WikiReader().getBaseUrlWiki(), Main.getJOSMWebsite());
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100 | }
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101 |
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102 | /**
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103 | * Additionally check if JOSM has been updated and refresh MOTD
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104 | */
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105 | @Override
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106 | protected boolean isCacheValid() {
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107 | // We assume a default of myVersion because it only kicks in in two cases:
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108 | // 1. Not yet written - but so isn't the interval variable, so it gets updated anyway
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109 | // 2. Cannot be written (e.g. while developing). Obviously we don't want to update
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110 | // everytime because of something we can't read.
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111 | return (Main.pref.getInteger("cache.motd.html.version", -999) == myVersion)
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112 | && Main.pref.get("cache.motd.html.java").equals(myJava)
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113 | && Main.pref.get("cache.motd.html.lang").equals(myLang);
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114 | }
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115 | }
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116 |
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117 | /**
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118 | * Initializes getting the MOTD as well as enabling the FileDrop Listener. Displays a message
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119 | * while the MOTD is downloading.
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120 | */
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121 | public GettingStarted() {
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122 | super(new BorderLayout());
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123 | lg = new LinkGeneral("<html>" + STYLE + "<h1>" + "JOSM - " + tr("Java OpenStreetMap Editor")
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124 | + "</h1><h2 align=\"center\">" + tr("Downloading \"Message of the day\"") + "</h2></html>");
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125 | // clear the build-in command ctrl+shift+O, because it is used as shortcut in JOSM
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126 | lg.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.SHIFT_MASK | InputEvent.CTRL_MASK), "none");
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127 | lg.setTransferHandler(null);
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128 |
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129 | JScrollPane scroller = new JScrollPane(lg);
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130 | scroller.setViewportBorder(new EmptyBorder(10, 100, 10, 100));
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131 | add(scroller, BorderLayout.CENTER);
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132 |
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133 | getMOTD();
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134 |
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135 | setTransferHandler(new FileTransferHandler());
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136 | }
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137 |
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138 | private void getMOTD() {
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139 | // Asynchronously get MOTD to speed-up JOSM startup
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140 | Thread t = new Thread((Runnable) () -> {
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141 | if (!contentInitialized && Main.pref.getBoolean("help.displaymotd", true)) {
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142 | try {
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143 | content = new MotdContent().updateIfRequiredString();
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144 | contentInitialized = true;
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145 | ProxyPreference.removeProxyPreferenceListener(this);
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146 | } catch (IOException ex) {
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147 | Main.warn(ex, tr("Failed to read MOTD. Exception was: {0}", ex.toString()));
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148 | content = "<html>" + STYLE + "<h1>" + "JOSM - " + tr("Java OpenStreetMap Editor")
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149 | + "</h1>\n<h2 align=\"center\">(" + tr("Message of the day not available") + ")</h2></html>";
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150 | // In case of MOTD not loaded because of proxy error, listen to preference changes to retry after update
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151 | ProxyPreference.addProxyPreferenceListener(this);
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152 | }
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153 | }
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154 |
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155 | if (content != null) {
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156 | EventQueue.invokeLater(() -> lg.setText(fixImageLinks(content)));
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157 | }
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158 | }, "MOTD-Loader");
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159 | t.setDaemon(true);
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160 | t.start();
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161 | }
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162 |
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163 | private String fixImageLinks(String s) {
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164 | Matcher m = Pattern.compile("src=\""+Main.getJOSMWebsite()+"/browser/trunk(/images/.*?\\.png)\\?format=raw\"").matcher(s);
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165 | StringBuffer sb = new StringBuffer();
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166 | while (m.find()) {
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167 | String im = m.group(1);
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168 | URL u = getClass().getResource(im);
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169 | if (u != null) {
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170 | m.appendReplacement(sb, Matcher.quoteReplacement("src=\"" + u + '\"'));
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171 | }
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172 | }
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173 | m.appendTail(sb);
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174 | return sb.toString();
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175 | }
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176 |
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177 | @Override
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178 | public void proxyPreferenceChanged() {
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179 | getMOTD();
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180 | }
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181 | }
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