1 | package net.oni2.swingcomponents;
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2 |
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3 | import java.awt.Color;
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4 | import java.awt.Desktop;
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5 | import java.awt.Font;
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6 | import java.io.IOException;
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7 | import java.net.URISyntaxException;
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8 |
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9 | import javax.swing.JEditorPane;
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10 | import javax.swing.JFrame;
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11 | import javax.swing.JLabel;
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12 | import javax.swing.UIDefaults;
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13 | import javax.swing.border.Border;
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14 | import javax.swing.event.HyperlinkEvent;
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15 | import javax.swing.event.HyperlinkListener;
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16 | import javax.swing.text.DefaultCaret;
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17 | import javax.swing.text.html.CSS;
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18 | import javax.swing.text.html.HTMLEditorKit;
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19 | import javax.swing.text.html.StyleSheet;
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20 |
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21 | /**
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22 | * @author Christian Illy
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23 | */
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24 | public class HTMLLinkLabel extends JEditorPane {
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25 | private static final long serialVersionUID = 2416829757362043910L;
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26 |
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27 | private String prefix;
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28 | private String suffix;
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29 |
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30 | private boolean borderEnabled = true;
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31 |
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32 | /**
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33 | * Create a new HTMLLinkLabel
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34 | */
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35 | public HTMLLinkLabel() {
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36 | super();
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37 |
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38 | ((DefaultCaret) this.getCaret())
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39 | .setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
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40 |
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41 | setContentType("text/html");
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42 |
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43 | Font font = new JLabel().getFont();
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44 |
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45 | StringBuffer style = new StringBuffer("font-family:" + font.getFamily()
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46 | + ";");
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47 | style.append("font-weight:" + (font.isBold() ? "bold" : "normal") + ";");
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48 | style.append("font-size:" + font.getSize() + "pt;");
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49 | style.append("margin: 0; padding: 0;");
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50 |
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51 | prefix = "<html><body style=\"" + style + "\">";
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52 | suffix = "</body></html>";
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53 |
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54 | addHyperlinkListener(new HyperlinkListener() {
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55 |
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56 | @Override
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57 | public void hyperlinkUpdate(HyperlinkEvent e) {
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58 | if (e.getEventType().equals(HyperlinkEvent.EventType.ACTIVATED))
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59 | try {
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60 | Desktop.getDesktop().browse(e.getURL().toURI());
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61 | } catch (IOException e1) {
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62 | e1.printStackTrace();
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63 | } catch (URISyntaxException e1) {
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64 | e1.printStackTrace();
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65 | }
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66 | }
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67 | });
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68 | setEditable(false);
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69 |
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70 | Color bgColor = ColorCopy.copyColor(new JFrame().getBackground());
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71 | UIDefaults defaults = new UIDefaults();
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72 | defaults.put("EditorPane[Enabled].backgroundPainter", bgColor);
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73 | putClientProperty("Nimbus.Overrides", defaults);
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74 | putClientProperty("Nimbus.Overrides.InheritDefaults", true);
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75 | setBackground(bgColor);
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76 | }
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77 |
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78 | /**
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79 | * Add or reset a CSS attribute for styling the text
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80 | *
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81 | * @param selector
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82 | * CSS selector
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83 | * @param attribute
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84 | * CSS attribute
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85 | * @param value
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86 | * Value
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87 | */
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88 | public void setCssAttribute(String selector, CSS.Attribute attribute,
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89 | String value) {
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90 | HTMLEditorKit hek = (HTMLEditorKit) getEditorKit();
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91 | StyleSheet css = hek.getStyleSheet();
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92 | css.addRule(String.format("%s {%s: %s}", selector, attribute.toString(), value));
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93 | }
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94 |
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95 | /**
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96 | * Allow or forbid to set a non-null border
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97 | *
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98 | * @param enable
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99 | * Non-null border allowed?
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100 | */
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101 | public void enableBorder(boolean enable) {
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102 | this.borderEnabled = enable;
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103 | if (!enable)
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104 | setBorder(null);
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105 | }
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106 |
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107 | @Override
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108 | public void setBorder(Border border) {
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109 | if (borderEnabled || border == null)
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110 | super.setBorder(border);
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111 | }
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112 |
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113 | @Override
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114 | public void setText(String t) {
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115 | if (t.startsWith("<p>"))
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116 | t = t.replaceFirst("<p>", "<p style=\"margin-top: 0\">");
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117 | super.setText(prefix + t + suffix);
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118 | }
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119 |
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120 | }
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