Combine interaction + events into one system. Remove double click. Ad…

…d hover/move positions. Use enums to lower amount of events.

crates/bevy_ui/src/entity.rs

@@ -2,7 +2,7 @@ use super::Node;
 use crate::{
     render::UI_PIPELINE_HANDLE,
     widget::{Button, Image, Text},
-    CalculatedSize, FocusPolicy, Interaction, PropagatePolicy, Style,
+    CalculatedSize, Interaction, PropagatePolicy, Style,
 };
 use bevy_asset::Handle;
 use bevy_ecs::Bundle;
@@ -117,7 +117,6 @@ pub struct TextComponents {
     pub draw: Draw,
     pub text: Text,
     pub calculated_size: CalculatedSize,
-    pub focus_policy: FocusPolicy,
     pub propagate_policy: PropagatePolicy,
     pub transform: Transform,
     pub local_transform: LocalTransform,
@@ -126,7 +125,6 @@ pub struct TextComponents {
 impl Default for TextComponents {
     fn default() -> Self {
         TextComponents {
-            focus_policy: FocusPolicy::Pass,
             propagate_policy: PropagatePolicy::Pass,
             draw: Draw {
                 is_transparent: true,
@@ -148,7 +146,6 @@ pub struct ButtonComponents {
     pub button: Button,
     pub style: Style,
     pub interaction: Interaction,
-    pub focus_policy: FocusPolicy,
     pub propagate_policy: PropagatePolicy,
     pub mesh: Handle<Mesh>, // TODO: maybe abstract this out
     pub material: Handle<ColorMaterial>,
@@ -182,7 +179,6 @@ impl Default for ButtonComponents {
                 },
             )]),
             interaction: Default::default(),
-            focus_policy: Default::default(),
             propagate_policy: Default::default(),
             node: Default::default(),
             style: Default::default(),