Mercurial > cgi-bin > hgweb.cgi > ClipMan

annotate src/name/blackcap/clipman/Main.kt @ 9:8fcff14defa2

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Stomp out race conditions and set width adaptively.
author David Barts <n5jrn@me.com>
date Sun, 19 Jan 2020 15:43:01 -0800
parents 7715ff59f053
children e7e067f5b649
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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.logging.Level
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17 import java.util.logging.Logger
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18 import java.util.concurrent.Semaphore
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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 kotlin.concurrent.thread
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23 import org.jsoup.Jsoup
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24 import org.jsoup.nodes.*
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25
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26 /* name we call ourselves */
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27 val MYNAME = "ClipMan"
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28
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29 /* default sizes */
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30 val CPWIDTH = 640
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31 val CPHEIGHT = 480
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32
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33 /* border widths */
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34 val PANEL_BORDER = 9
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35 val OUTER_BORDER = 9 /* must be 6 or more */
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36 val INNER_BORDER = 1
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37 val MARGIN_BORDER = 3
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38
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39 /* kills the updating thread (and does a system exit) when needed */
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40 class KillIt(val thr: Thread) : WindowListener {
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41 // events we don't care about
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42 override fun windowActivated(e: WindowEvent) {}
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43 override fun windowClosed(e: WindowEvent) {}
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44 override fun windowDeactivated(e: WindowEvent) {}
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45 override fun windowDeiconified(e: WindowEvent) {}
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46 override fun windowIconified(e: WindowEvent) {}
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47 override fun windowOpened(e: WindowEvent) {}
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48
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49 // and the one we do
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50 override fun windowClosing(e: WindowEvent) {
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51 thr.run { interrupt(); join() }
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52 LOGGER.log(Level.INFO, "execution complete")
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53 System.exit(0)
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54 }
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55 }
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56
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57 /* the updating thread */
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58 class UpdateIt(val queue: PasteboardQueue, val interval: Int): Thread() {
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59 @Volatile var enabled = true
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60 private val outerBorder =
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61 MatteBorder(OUTER_BORDER-6, OUTER_BORDER, OUTER_BORDER, OUTER_BORDER,
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62 queue.parent.background)
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63 private val stdBorder =
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64 CompoundBorder(LineBorder(Color.GRAY, INNER_BORDER),
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65 EmptyBorder(MARGIN_BORDER, MARGIN_BORDER, MARGIN_BORDER, MARGIN_BORDER))
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66
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67 override fun run() {
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68 var oldContents = ""
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69 var newContents = ""
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70 while (true) {
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71 if (enabled) {
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72 var contents = PasteboardItem.read()
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73 if (contents != null) {
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74 newContents = when (contents) {
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75 is PasteboardItem.Plain -> contents.plain
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76 is PasteboardItem.HTML -> contents.plain
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77 }
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78 if (oldContents != newContents) {
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79 var stdWidth: Int? = null
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80 inSynSwingThread {
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81 stdWidth = queue.parent.size.width - 2 * (PANEL_BORDER+OUTER_BORDER+INNER_BORDER+MARGIN_BORDER)
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82 }
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83 var widget = JPanel().apply {
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84 layout = BoxLayout(this, BoxLayout.Y_AXIS)
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85 background = queue.parent.background
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86 border = outerBorder
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87 }
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88 when (contents) {
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89 is PasteboardItem.Plain -> widget.run {
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90 add(stdLabel("Plain text"))
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91 add(JTextPane().apply {
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92 contentType = "text/plain"
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93 text = contents.plain
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94 font = Font(Font.MONOSPACED, Font.PLAIN, 14)
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95 border = stdBorder
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96 autoSize(stdWidth!!)
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97 setEditable(false)
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98 alignmentX = JTextPane.LEFT_ALIGNMENT
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99 })
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100 }
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101 is PasteboardItem.HTML -> widget.run {
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102 add(stdLabel("Styled text"))
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103 add(JTextPane().apply {
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104 contentType = "text/html"
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105 toolTipText = "Styled text"
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106 text = scrub(contents.html)
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107 border = stdBorder
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108 autoSize(stdWidth!!)
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109 setEditable(false)
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110 alignmentX = JTextPane.LEFT_ALIGNMENT
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111 })
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112 }
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113 }
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114 queue.add(QueueItem(widget, contents))
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115 oldContents = newContents
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116 }
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117 }
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118 }
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119 if (Thread.interrupted()) {
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120 return
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121 }
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122 try {
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123 Thread.sleep(interval - System.currentTimeMillis() % interval)
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124 } catch (e: InterruptedException) {
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125 return
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126 }
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127 }
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128 }
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129
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130 private fun stdLabel(text: String) = JLabel(text).apply {
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131 horizontalAlignment = JLabel.LEFT
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132 alignmentX = JLabel.LEFT_ALIGNMENT
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133 }
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134
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135 private fun scrub(html: String): String {
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136 return Jsoup.parse(html).run {
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137 select(":root>head>meta").remove()
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138 outputSettings()
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139 .charset(CHARSET_NAME)
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140 .syntax(Document.OutputSettings.Syntax.xml)
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141 outerHtml()
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142 }
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143 }
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144 }
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145
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146 fun main(args: Array<String>) {
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147 LOGGER.log(Level.INFO, "beginning execution")
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148 setLookFeel()
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149 val frame = JFrame(MYNAME)
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150 val con = JPanel().apply {
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151 layout = BoxLayout(this, BoxLayout.Y_AXIS)
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152 border = EmptyBorder(PANEL_BORDER, PANEL_BORDER, PANEL_BORDER, PANEL_BORDER)
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153 background = frame.background
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154 }
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155 inSynSwingThread {
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156 frame.apply {
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157 contentPane.add(
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158 JScrollPane(con).apply {
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159 verticalScrollBarPolicy = ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS
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160 horizontalScrollBarPolicy = ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER
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161 preferredSize = Dimension(CPWIDTH, CPHEIGHT)
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162 background = frame.background
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163 }, BorderLayout.CENTER)
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164 pack()
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165 setVisible(true)
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166 }
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167 }
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168 val queue = PasteboardQueue(con, 10)
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169 val updater = UpdateIt(queue, 1000).apply { start() }
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170 inSwingThread { frame.addWindowListener(KillIt(updater)) }
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171 }
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172
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173 fun setLookFeel() {
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174 inSwingThread {
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175 UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
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176 }
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177 }
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178
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179 fun inSwingThread(block: () -> Unit) {
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180 SwingUtilities.invokeLater(Runnable(block))
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181 }
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182
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183 fun inSynSwingThread(block: () -> Unit) {
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184 val ready = Semaphore(0)
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185 inSwingThread {
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186 block()
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187 ready.release()
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188 }
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189 ready.acquire()
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190 }
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191
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192 fun JTextComponent.autoSize(width: Int): Unit {
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193 val SLOP = 10
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194 val dim = Dimension(width, width)
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195 preferredSize = dim
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196 size = dim
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197 val r = modelToView(document.length)
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198 preferredSize = Dimension(width, r.y + r.height + SLOP)
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199 }