Initial commit

app/src/main/java/ani/dantotsu/others/Xpandable.kt

@@ -0,0 +1,66 @@
+package ani.dantotsu.others
+
+import android.animation.ObjectAnimator
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.LinearLayout
+import androidx.core.content.withStyledAttributes
+import androidx.core.view.children
+import ani.dantotsu.R
+
+
+class Xpandable @JvmOverloads constructor(
+    context: Context, attrs: AttributeSet? = null
+) : LinearLayout(context, attrs) {
+    var expanded: Boolean = false
+
+    init {
+        context.withStyledAttributes(attrs, R.styleable.Xpandable) {
+            expanded = getBoolean(R.styleable.Xpandable_isExpanded, expanded)
+        }
+    }
+
+    override fun onAttachedToWindow() {
+
+        getChildAt(0)!!.setOnClickListener {
+            if (expanded) hideAll() else showAll()
+            postDelayed({
+                expanded = !expanded
+            }, 300)
+        }
+
+        if(!expanded) children.forEach {
+            if (it != getChildAt(0)){
+                it.visibility = GONE
+            }
+        }
+        super.onAttachedToWindow()
+    }
+
+
+    private fun hideAll() {
+        children.forEach {
+            if (it != getChildAt(0)){
+                ObjectAnimator.ofFloat(it, "scaleY", 1f, 0.5f).setDuration(200).start()
+                ObjectAnimator.ofFloat(it, "translationY", 0f, -32f).setDuration(200).start()
+                ObjectAnimator.ofFloat(it, "alpha", 1f, 0f).setDuration(200).start()
+                it.postDelayed({
+                    it.visibility = GONE
+                }, 300)
+            }
+
+        }
+    }
+
+    private fun showAll() {
+        children.forEach {
+            if (it != getChildAt(0)){
+                it.visibility = VISIBLE
+                ObjectAnimator.ofFloat(it, "scaleY", 0.5f, 1f).setDuration(200).start()
+                ObjectAnimator.ofFloat(it, "translationY", -32f, 0f).setDuration(200).start()
+                ObjectAnimator.ofFloat(it, "alpha", 0f, 1f).setDuration(200).start()
+            }
+        }
+    }
+
+}