xterm copy-on-select (fixes #400)

terminus-terminal/src/frontends/xtermFrontend.ts

@@ -16,6 +16,7 @@ export class XTermFrontend extends Frontend {
     private zoom = 0
     private resizeHandler: any
     private configuredTheme: ITheme = {}
+    private copyOnSelect = false
 
     constructor () {
         super()
@@ -33,6 +34,11 @@ export class XTermFrontend extends Frontend {
         this.xterm.on('title', title => {
             this.title.next(title)
         })
+        this.xterm.on('selection', () => {
+            if (this.copyOnSelect) {
+                this.copySelection()
+            }
+        })
     }
 
     attach (host: HTMLElement): void {
@@ -101,6 +107,8 @@ export class XTermFrontend extends Frontend {
         this.configuredFontSize = config.terminal.fontSize
         this.setFontSize()
 
+        this.copyOnSelect = config.terminal.copyOnSelect
+
         let theme: ITheme = {
             foreground: config.terminal.colorScheme.foreground,
             background: (config.terminal.background === 'colorScheme') ? config.terminal.colorScheme.background : 'transparent',