write a text highlighting flex program that can self-select the highlighted area, the color set in the code, text textarea, myEclipse environmental writing, hope to help

HighlightTest\.actionScriptProperties
.............\.flexProperties
.............\.project
.............\.settings\org.eclipse.core.resources.prefs
.............\bin-debug\AC_OETags.js
.............\.........\HighlightTest.html
.............\.........\HighlightTest.swf
.............\.........\history\history.css
.............\.........\.......\history.js
.............\.........\.......\historyFrame.html
.............\.........\playerProductInstall.swf
.............\html-template\AC_OETags.js
.............\.............\history\history.css
.............\.............\.......\history.js
.............\.............\.......\historyFrame.html
.............\.............\index.template.html
.............\.............\playerProductInstall.swf
.............\src\com\components\BlockTextArea.as
.............\...\...\kingnare\regex\HighlightBlock.as
.............\...\HighlightTest.mxml
.............\...\com\kingnare\regex
.............\...\...\components
.............\...\...\kingnare
.............\bin-debug\history
.............\html-template\history
.............\src\com
.............\.settings
.............\bin-debug
.............\html-template
.............\libs
.............\src
HighlightTest

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