Refine UI for tethering

mobile/src/main/java/be/mygod/vpnhotspot/widget/TextViewLinkHandler.kt

@@ -0,0 +1,32 @@
+package be.mygod.vpnhotspot.widget
+
+import android.text.Spannable
+import android.text.method.LinkMovementMethod
+import android.text.style.URLSpan
+import android.view.MotionEvent
+import android.widget.TextView
+
+/**
+ * Based on: https://stackoverflow.com/a/32443884/2245107
+ */
+abstract class TextViewLinkHandler : LinkMovementMethod() {
+    companion object {
+        fun create(handler: (String) -> Unit) = object : TextViewLinkHandler() {
+            override fun onLinkClick(url: String) = handler(url)
+        }
+    }
+
+    override fun onTouchEvent(widget: TextView, buffer: Spannable, event: MotionEvent): Boolean {
+        if (event.action != MotionEvent.ACTION_UP) return super.onTouchEvent(widget, buffer, event)
+        val x = event.x - widget.totalPaddingLeft + widget.scrollX
+        val y = event.y.toInt() - widget.totalPaddingTop + widget.scrollY
+        val layout = widget.layout
+        val line = layout.getLineForVertical(y)
+        val off = layout.getOffsetForHorizontal(line, x)
+        val link = buffer.getSpans(off, off, URLSpan::class.java)
+        if (link.isNotEmpty()) onLinkClick(link[0].url)
+        return true
+    }
+
+    abstract fun onLinkClick(url: String)
+}