Selection requests now take in a timestamp

v2/examples/paste/main.go

@@ -82,7 +82,8 @@ func main () {
 	request,   _ := xgbsel.NewRequest (
 		requestor { window: window },
 		clipboard,
-		property)
+		property,
+		xproto.TimeCurrentTime)
 
 	// listen for events
 	window.Listen(xproto.EventMaskPropertyChange)

v2/request.go

@@ -45,14 +45,19 @@ type Request struct {
 	destination xproto.Atom
 	incrBuffer  []byte
 	incrTarget  Target
+	timestamp   xproto.Timestamp
 }
 
-// NewRequest sends a new selection request.
+// NewRequest sends a new selection request. The timestamp should be set to that
-func NewRequest (requestor Requestor, source, destination xproto.Atom) (*Request, error) {
+// of the event that triggered the request, such as a Ctrl+V event, or a mouse
+// button event that led to text being pasted. If the claim was not triggered by
+// an event, and *only* in this scenario, specify xproto.TimeCurrentTime.
+func NewRequest (requestor Requestor, source, destination xproto.Atom, timestamp xproto.Timestamp) (*Request, error) {
 	request := &Request {
 		source:      source,
 		destination: destination,
 		requestor:   requestor,
+		timestamp:   timestamp,
 	}
 
 	targets, err := xprop.Atm(requestor.Window().X, "TARGETS")
@@ -86,17 +91,14 @@ func (request *Request) convertSelection (target xproto.Atom, switchTo selReqSta
 	// to a window that it created; the owner will place the reply property
 	// there. The requestor should set the time argument to the timestamp on
 	// the event that triggered the request for the selection value. Note
-	// that clients should not specify CurrentTime*.
+	// that clients should not specify CurrentTime.
 	err = xproto.ConvertSelectionChecked (
 		request.requestor.Window().X.Conn(),
 		request.requestor.Window().Id,
 		request.source,
 		target,
 		request.destination,
-		// TODO: *possibly replace this zero with an actual timestamp
+		request.timestamp).Check()
-		// received from the server. this is non-trivial as we cannot
-		// rely on the timestamp of the last received event.
-		0).Check()
 	if err != nil { request.die(err); return }
 	
 	request.state = switchTo