feat: Events

dom/src/main/scala/top/davidon/sfs/dom/Element.scala

@@ -1,6 +1,6 @@
 package top.davidon.sfs.dom
 
-import top.davidon.sfs.dom.codecs.StringCodec
+import top.davidon.sfs.dom.mods.Modifier
 import top.davidon.sfs.dom.tags.Tag
 
 /** tag + modifiers + value */

dom/src/main/scala/top/davidon/sfs/dom/ReactiveRenderer.scala

@@ -0,0 +1,9 @@
+package top.davidon.sfs.dom
+
+import org.scalajs.dom
+import top.davidon.sfs.dom.mods.Modifier
+
+trait ReactiveRenderer {
+  def valueFunc[F](element: dom.Element, value: F): Unit
+  def modifierFunc[F, T](modifier: Modifier[F, T], value: F): Unit
+}

dom/src/main/scala/top/davidon/sfs/dom/TriggerableValue.scala

@@ -0,0 +1,5 @@
+package top.davidon.sfs.dom
+
+trait TriggerableValue[T] {
+  def trigger[T](value: T): Unit
+}

dom/src/main/scala/top/davidon/sfs/dom/codecs/EmptyCodec.scala

@@ -0,0 +1,6 @@
+package top.davidon.sfs.dom.codecs
+
+class EmptyCodec[T] extends Codec[T, Unit] {
+  override def decode(domValue: Unit): T = ???
+  override def encode(scalaValue: T): Unit = {}
+}

dom/src/main/scala/top/davidon/sfs/dom/keys/AriaAttr.scala

@@ -1,6 +1,7 @@
 package top.davidon.sfs.dom.keys
 import top.davidon.sfs.dom.codecs.{Codec, StringCodec}
-import top.davidon.sfs.dom.{Modifier, Value}
+import top.davidon.sfs.dom.Value
+import top.davidon.sfs.dom.mods.Modifier
 
 class AriaAttr[V](
     suffix: String,

dom/src/main/scala/top/davidon/sfs/dom/keys/EventProp.scala

@@ -1,5 +1,33 @@
 package top.davidon.sfs.dom.keys
 
 import org.scalajs.dom
+import top.davidon.sfs.dom.codecs.{EmptyCodec, StringAsIsCodec}
+import top.davidon.sfs.dom.mods.{EventMod, Modifier}
+import top.davidon.sfs.dom.{TriggerableValue, Value}
 
-class EventProp[Event <: dom.Event](override val name: String) extends Key {}
+class EventProp[E <: dom.Event](override val name: String) extends Key {
+
+  /** Don't use with StringRenderer and ssr off/false
+    * @param value
+    * @return
+    */
+  def :=(value: E => Unit): Modifier[EventMod[E], Unit] = {
+    Modifier(this, Value(EventMod(this, value), EmptyCodec()))
+  }
+
+  /** Don't use with StringRenderer and ssr off/false
+    * @param value
+    * @return
+    */
+  def :=(value: TriggerableValue[E]): Modifier[EventMod[E], Unit] = {
+    Modifier(this, Value(EventMod(this, value.trigger), EmptyCodec()))
+  }
+
+  /** Only use with StringRenderer and ssr off/false
+    * @param value
+    * @return
+    */
+  def :=(value: String): Modifier[String, String] = {
+    Modifier(this, Value(value, StringAsIsCodec))
+  }
+}

dom/src/main/scala/top/davidon/sfs/dom/keys/HtmlAttr.scala

@@ -1,7 +1,8 @@
 package top.davidon.sfs.dom.keys
 
 import top.davidon.sfs.dom.codecs.{Codec, StringCodec}
-import top.davidon.sfs.dom.{Modifier, Value}
+import top.davidon.sfs.dom.Value
+import top.davidon.sfs.dom.mods.Modifier
 
 class HtmlAttr[V](
     override val name: String,

dom/src/main/scala/top/davidon/sfs/dom/keys/HtmlProp.scala

@@ -1,6 +1,7 @@
 package top.davidon.sfs.dom.keys
 import top.davidon.sfs.dom.codecs.Codec
-import top.davidon.sfs.dom.{Modifier, Value}
+import top.davidon.sfs.dom.Value
+import top.davidon.sfs.dom.mods.Modifier
 
 class HtmlProp[V, DomV](
     override val name: String,

dom/src/main/scala/top/davidon/sfs/dom/keys/SvgAttr.scala

@@ -1,6 +1,7 @@
 package top.davidon.sfs.dom.keys
 import top.davidon.sfs.dom.codecs.{Codec, StringCodec}
-import top.davidon.sfs.dom.{Modifier, Value}
+import top.davidon.sfs.dom.Value
+import top.davidon.sfs.dom.mods.Modifier
 
 class SvgAttr[V](
     val localName: String,

dom/src/main/scala/top/davidon/sfs/dom/mods/EventMod.scala

@@ -0,0 +1,6 @@
+package top.davidon.sfs.dom.mods
+
+import org.scalajs.dom
+import top.davidon.sfs.dom.keys.EventProp
+
+class EventMod[E <: dom.Event](val key: EventProp[E], val value: E => Unit) {}

dom/src/main/scala/top/davidon/sfs/dom/mods/Modifier.scala

@@ -1,5 +1,6 @@
-package top.davidon.sfs.dom
+package top.davidon.sfs.dom.mods
 
+import top.davidon.sfs.dom.Value
 import top.davidon.sfs.dom.codecs.Codec
 import top.davidon.sfs.dom.keys.Key
 

dom/src/main/scala/top/davidon/sfs/dom/tags/Tag.scala

@@ -1,8 +1,8 @@
 package top.davidon.sfs.dom.tags
 
 import org.scalajs.dom
-import top.davidon.sfs.dom.codecs.StringCodec
-import top.davidon.sfs.dom.{Element, Modifier, Value}
+import top.davidon.sfs.dom.mods.{EventMod, Modifier}
+import top.davidon.sfs.dom.{Element, Value}
 
 trait Tag[+Ref <: dom.Element] {
   val name: String