make headline message copyable (#29187)

* make headline message copyable

* selectable in mobile info panel

Author: zoom-ua

shared/chat/conversation/messages/message-popup/text.tsx

@@ -33,6 +33,8 @@ const PopText = (ownProps: OwnProps) => {
     switch (message.type) {
       case 'text':
         return message.text.stringValue()
+      case 'setDescription':
+        return message.newDescription.stringValue() || undefined
       case 'systemGitPush':
         switch (message.pushType) {
           case T.RPCGen.GitPushType.createrepo:

shared/common-adapters/markdown/index.tsx

@@ -71,7 +71,7 @@ export type Props = {
   context?: string // metadata used for bookkeeping
   children?: string
   lineClamp?: LineClampType
-  selectable?: boolean // desktop - applies to outer container only
+  selectable?: boolean
   smallStandaloneEmoji?: boolean // don't increase font size for a standalone emoji
   paragraphTextClassName?: string
   preview?: boolean // if true render a simplified version
@@ -447,6 +447,7 @@ const SimpleMarkdownComponent = React.memo(function SimpleMarkdownComponent(p: M
       disallowAnimation,
       messageType,
       paragraphTextClassName,
+      selectable,
       styleOverride,
       virtualText,
     }

shared/common-adapters/markdown/react.tsx

@@ -23,6 +23,7 @@ interface State {
   disallowAnimation?: boolean
   messageType?: T.Chat.MessageType
   paragraphTextClassName?: string
+  selectable?: boolean
   styleOverride?: StyleOverride
   virtualText?: boolean
   key?: string | number | undefined
@@ -335,6 +336,7 @@ const reactComponentsForMarkdownType = {
             state.inBlockQuote && markdownStyles.quoteStyleText,
           ])}
           allowFontScaling={state.allowFontScaling}
+          selectable={state.selectable}
         >
           {output(node['content'], state)}
         </Text>