annotate src/name/blackcap/clipman/Main.kt @ 20:17296054c103

HTMLEditorKit shares all stylesheets. How unbelievably braindamaged.
author David Barts <n5jrn@me.com>
date Tue, 21 Jan 2020 23:38:10 -0800
parents 5e0d1fe61da9
children c10a447b9e1b
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1 /*
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2 * The entry point and most of the view logic is here.
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3 */
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4 package name.blackcap.clipman
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5
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6 import java.awt.BorderLayout
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7 import java.awt.Color
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8 import java.awt.Container
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9 import java.awt.Dimension
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10 import java.awt.Font
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11 import java.awt.Toolkit;
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12 import java.awt.datatransfer.*
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13 import java.awt.event.WindowEvent
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14 import java.awt.event.WindowListener
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15 import java.util.Date
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16 import java.util.concurrent.Semaphore
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17 import java.util.logging.Level
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18 import java.util.logging.Logger
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19 import javax.swing.*
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20 import javax.swing.border.*
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21 import javax.swing.text.JTextComponent
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22 import javax.swing.text.html.StyleSheet
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23 import javax.swing.text.html.HTMLEditorKit
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24 import kotlin.concurrent.thread
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25 import org.jsoup.Jsoup
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26 import org.jsoup.nodes.*
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27
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28 /* name we call ourselves */
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29 val MYNAME = "ClipMan"
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30
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31 /* default sizes */
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32 val CPWIDTH = 640
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33 val CPHEIGHT = 480
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34
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35 /* border widths */
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36 val PANEL_BORDER = 9
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37 val OUTER_BORDER_TOP = 3
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38 val OUTER_BORDER = 9
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39 val INNER_BORDER = 1
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40 val MARGIN_BORDER = 3
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41
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42 /* default font sizes in the text-display panes */
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43 val MONO_SIZE = 14
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44 val PROP_SIZE = 16
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45
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46 /* kills the updating thread (and does a system exit) when needed */
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47 class KillIt(val thr: Thread) : WindowListener {
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48 // events we don't care about
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49 override fun windowActivated(e: WindowEvent) {}
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50 override fun windowClosed(e: WindowEvent) {}
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51 override fun windowDeactivated(e: WindowEvent) {}
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52 override fun windowDeiconified(e: WindowEvent) {}
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53 override fun windowIconified(e: WindowEvent) {}
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54 override fun windowOpened(e: WindowEvent) {}
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55
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56 // and the one we do
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57 override fun windowClosing(e: WindowEvent) {
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58 thr.run { interrupt(); join() }
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59 LOGGER.log(Level.INFO, "execution complete")
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60 System.exit(0)
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61 }
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62 }
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63
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64 class ClipText: JTextPane() {
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65 override fun getMaximumSize(): Dimension {
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66 return Dimension(Int.MAX_VALUE, preferredSize.height)
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67 }
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68 }
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69
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70 /* HTMLEditorKit shares all stylesheets. How unbelievably braindamaged. */
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71 class MyEditorKit: HTMLEditorKit() {
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72 private var _styleSheet = defaultStyleSheet
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73 override fun getStyleSheet() = _styleSheet
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74 override fun setStyleSheet(value: StyleSheet) {
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75 _styleSheet = value
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76 }
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77
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78 val defaultStyleSheet: StyleSheet
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79 get() {
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80 return super.getStyleSheet()
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81 }
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82 }
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83
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84
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85 /* the updating thread */
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86 class UpdateIt(val queue: PasteboardQueue, val interval: Int): Thread() {
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87 @Volatile var enabled = true
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88 private val outerBorder =
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89 MatteBorder(OUTER_BORDER_TOP, OUTER_BORDER, OUTER_BORDER, OUTER_BORDER,
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90 queue.parent.background)
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91 private val stdBorder =
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92 CompoundBorder(LineBorder(Color.GRAY, INNER_BORDER),
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93 EmptyBorder(MARGIN_BORDER, MARGIN_BORDER, MARGIN_BORDER, MARGIN_BORDER))
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94
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95 override fun run() {
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96 var oldContents: PasteboardItem? = null
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97 while (true) {
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98 if (enabled) {
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99 var contents = PasteboardItem.read()
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100 if ((contents != null) && (contents != oldContents)) {
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101 val stdWidth = queue.parent.size.width - 2 * (PANEL_BORDER+OUTER_BORDER+INNER_BORDER+MARGIN_BORDER)
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102 val widget = JPanel().apply {
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103 layout = BoxLayout(this, BoxLayout.Y_AXIS)
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104 background = queue.parent.background
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105 border = outerBorder
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106 }
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107 val (plain, html) = when(contents) {
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108 is PasteboardItem.Plain -> Pair(contents.plain, null)
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109 is PasteboardItem.HTML -> Pair(null, contents.html)
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110 is PasteboardItem.RTF -> Pair(contents.plain, contents.html)
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111 }
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112 if (html == null) {
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113 widget.run {
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114 add(stdLabel("Plain text"))
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115 add(ClipText().apply {
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116 contentType = "text/plain"
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117 text = plain
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118 font = Font(Font.MONOSPACED, Font.PLAIN, MONO_SIZE)
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119 border = stdBorder
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120 autoSize(stdWidth)
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121 setEditable(false)
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122 alignmentX = JTextPane.LEFT_ALIGNMENT
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123 })
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124 }
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125 } else {
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126 widget.run {
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127 add(stdLabel("Styled text"))
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128 val (dhtml, style) = preproc(html)
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129 val hek = MyEditorKit().apply {
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130 style.addStyleSheet(defaultStyleSheet)
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131 styleSheet = style
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132 }
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133 add(ClipText().apply {
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134 editorKit = hek
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135 text = dhtml
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136 border = stdBorder
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137 autoSize(stdWidth)
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138 setEditable(false)
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139 alignmentX = JTextPane.LEFT_ALIGNMENT
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140 })
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141 }
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142 }
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143 queue.add(QueueItem(widget, contents))
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144 oldContents = contents
0
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145 }
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146 }
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147 if (Thread.interrupted()) {
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148 return
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149 }
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150 try {
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151 Thread.sleep(interval - System.currentTimeMillis() % interval)
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152 } catch (e: InterruptedException) {
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153 return
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154 }
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155 }
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156 }
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157
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158 private fun stdLabel(text: String) = JLabel(text).apply {
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159 horizontalAlignment = JLabel.LEFT
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160 alignmentX = JLabel.LEFT_ALIGNMENT
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161 }
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162
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163 private fun preproc(html: String): Pair<String, StyleSheet> {
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164 val sty = StyleSheet().apply {
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165 addRule("body { font-family: serif; font-size: %d; }".format(PROP_SIZE))
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166 addRule("code, kbd, pre, samp, tt { font-family: monospace; font-size: %d; }".format(MONO_SIZE))
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167 }
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168 val scrubbed = Jsoup.parse(html).run {
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169 select("style").forEach {
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170 it.dataNodes().forEach { sty.addRule(it.wholeData) }
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171 }
0
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172 select(":root>head>meta").remove()
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173 outputSettings()
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174 .charset(CHARSET_NAME)
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175 .syntax(Document.OutputSettings.Syntax.xml)
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176 outerHtml()
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177 }
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178 return Pair(scrubbed, sty)
0
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179 }
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180 }
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181
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182 fun main(args: Array<String>) {
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183 LOGGER.log(Level.INFO, "beginning execution")
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184 setLookFeel()
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185 val frame = JFrame(MYNAME)
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186 val con = JPanel().apply {
0
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187 layout = BoxLayout(this, BoxLayout.Y_AXIS)
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188 border = EmptyBorder(PANEL_BORDER, PANEL_BORDER, PANEL_BORDER, PANEL_BORDER)
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189 background = frame.background
0
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190 }
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191 inSynSwingThread {
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192 frame.apply {
0
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193 contentPane.add(
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194 JScrollPane(con).apply {
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195 verticalScrollBarPolicy = ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS
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196 horizontalScrollBarPolicy = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER
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197 preferredSize = Dimension(CPWIDTH, CPHEIGHT)
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198 background = frame.background
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199 }, BorderLayout.CENTER)
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200 pack()
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201 setVisible(true)
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202 }
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203 }
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204 val queue = PasteboardQueue(con, 10)
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205 val updater = UpdateIt(queue, 1000).apply { start() }
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206 inSwingThread { frame.addWindowListener(KillIt(updater)) }
0
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207 }
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208
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209 fun setLookFeel() {
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210 inSwingThread {
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211 UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
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212 }
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213 }
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214
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215 fun inSwingThread(block: () -> Unit) {
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216 SwingUtilities.invokeLater(Runnable(block))
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217 }
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218
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219 fun inSynSwingThread(block: () -> Unit) {
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220 val ready = Semaphore(0)
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221 inSwingThread {
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222 block()
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223 ready.release()
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224 }
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225 ready.acquire()
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226 }
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227
0
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228 fun JTextComponent.autoSize(width: Int): Unit {
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229 val SLOP = 10
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230 val dim = Dimension(width, width)
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231 preferredSize = dim
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232 size = dim
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233 val r = modelToView(document.length)
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234 preferredSize = Dimension(width, r.y + r.height + SLOP)
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235 }