<itemvalue="feat: send message to cloud function; hide animated emojis when dialog showing."/>
<itemvalue="feat: send message to cloud function; hide animated emojis when dialog showing."/>
<itemvalue="implement"/>
<itemvalue="implement"/>
<itemvalue="实现"/>
<itemvalue="实现"/>
<itemvalue="{@template dart.ui.textHeightBehavior} Defines how to apply [TextStyle.height] over and under text. [TextHeightBehavior.applyHeightToFirstAscent] and [TextHeightBehavior.applyHeightToLastDescent] represent whether the [TextStyle.height] modifier will be applied to the corresponding metric. By default both properties are true, and [TextStyle.height] is applied as normal. When set to false, the font's default ascent will be used. [TextHeightBehavior.leadingDistribution] determines how the leading is distributed over and under text. This property applies before [TextHeightBehavior.applyHeightToFirstAscent] and [TextHeightBehavior.applyHeightToLastDescent]. {@endtemplate}"/>