Databinding components

Event handlers refactoring

1 files changed, 59 insertions, 0 deletions

diff --git a/src/main/kotlin/pl/treksoft/kvision/panel/SimplePanel.kt b/src/main/kotlin/pl/treksoft/kvision/panel/SimplePanel.kt
new file mode 100644
index 00000000..e9cf503b
--- /dev/null
+++ b/src/main/kotlin/pl/treksoft/kvision/panel/SimplePanel.kt
@@ -0,0 +1,59 @@
+package pl.treksoft.kvision.panel
+
+import com.github.snabbdom.VNode
+import pl.treksoft.kvision.core.Container
+import pl.treksoft.kvision.core.Widget
+
+open class SimplePanel(classes: Set<String> = setOf()) : Widget(classes), Container {
+    internal val children: MutableList<Widget> = mutableListOf()
+
+    override fun render(): VNode {
+        return kvh("div", childrenVNodes())
+    }
+
+    protected open fun childrenVNodes(): Array<VNode> {
+        return children.filter { it.visible }.map { it.renderVNode() }.toTypedArray()
+    }
+
+    protected fun addInternal(child: Widget): SimplePanel {
+        children.add(child)
+        child.parent = this
+        refresh()
+        return this
+    }
+
+    override fun add(child: Widget): SimplePanel {
+        return addInternal(child)
+    }
+
+    override fun addAll(children: List<Widget>): SimplePanel {
+        this.children.addAll(children)
+        children.map { it.parent = this }
+        refresh()
+        return this
+    }
+
+    override fun remove(child: Widget): SimplePanel {
+        if (children.remove(child)) {
+            child.clearParent()
+            refresh()
+        }
+        return this
+    }
+
+    override fun removeAll(): SimplePanel {
+        children.map { it.clearParent() }
+        children.clear()
+        refresh()
+        return this
+    }
+
+    override fun getChildren(): List<Widget> {
+        return ArrayList(children)
+    }
+
+    override fun dispose() {
+        children.forEach { it.dispose() }
+        removeAll()
+    }
+}