Minor classes restructuration and optimize imports

2016-05-27 13:21:21 +02:00
parent 4e784cd7c3
commit 0fe350af9a
44 changed files with 138 additions and 131 deletions
@@ -0,0 +1,33 @@
+package eu.kanade.tachiyomi.widget
+
+import android.support.design.widget.CoordinatorLayout
+import android.support.design.widget.FloatingActionButton
+import android.support.v4.view.ViewCompat
+import android.view.View
+
+abstract class FABAnimationBase() : FloatingActionButton.Behavior() {
+
+    var isAnimatingOut = false
+
+    override fun onStartNestedScroll(coordinatorLayout: CoordinatorLayout, child: FloatingActionButton,
+                                     directTargetChild: View, target: View, nestedScrollAxes: Int): Boolean {
+        // Ensure we react to vertical scrolling
+        return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL ||
+                super.onStartNestedScroll(coordinatorLayout, child, directTargetChild, target, nestedScrollAxes)
+    }
+
+    override fun onNestedScroll(coordinatorLayout: CoordinatorLayout, child: FloatingActionButton, target: View,
+                                dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int) {
+        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed)
+        if (dyConsumed > 0 && !isAnimatingOut && child.visibility == View.VISIBLE) {
+            // User scrolled down and the FAB is currently visible -> hide the FAB
+            animateOut(child)
+        } else if (dyConsumed < 0 && child.visibility != View.VISIBLE) {
+            // User scrolled up and the FAB is currently not visible -> show the FAB
+            animateIn(child)
+        }
+    }
+
+    abstract fun animateOut(button: FloatingActionButton)
+    abstract fun animateIn(button: FloatingActionButton)
+}