Added double click delay to config

default/config/config.go

@@ -1,5 +1,6 @@
 package config
 
+import "time"
 import "git.tebibyte.media/sashakoshka/tomo"
 
 // Default specifies default configuration values.
@@ -11,17 +12,28 @@ func (Default) ScrollVelocity () int {
 	return 16
 }
 
+// DoubleClickDelay returns the default double click delay.
+func (Default) DoubleClickDelay () time.Duration {
+	return time.Second / 2
+}
+
 // Wrapped wraps a configuration and uses Default if it is nil.
 type Wrapped struct {
 	tomo.Config
 }
 
-// ScrollVelocity returns how many pixels should be scrolled every time
-// a scroll button is pressed.
+// ScrollVelocity returns how many pixels should be scrolled every time a scroll
+// button is pressed.
 func (wrapped Wrapped) ScrollVelocity () int {
 	return wrapped.ensure().ScrollVelocity()
 }
 
+// DoubleClickDelay returns the maximum delay between two clicks for them to be
+// registered as a double click.
+func (wrapped Wrapped) DoubleClickDelay () time.Duration {
+	return wrapped.ensure().DoubleClickDelay()
+}
+
 func (wrapped Wrapped) ensure () (real tomo.Config) {
 	real = wrapped.Config
 	if real == nil { real = Default { } }