Allow enabling/disabling breakpoints (#27280)

This PR adds the ability to enable/disable breakpoints. It also fixes a
bug where toggling a log breakpoint from the breakpoint context menu
would add a standard breakpoint on top of the log breakpoint instead of
deleting it.

todo: 
- [x] Add `BreakpointState` field Breakpoint that manages if a
breakpoint is active or not
- [x] Don't send disabled breakpoints to DAP servers - in progress
- [x] Half the opacity of disabled breakpoints - in progress
- [x] Add `BreakpointState` to database
- [x] Editor test for enabling/disabling breakpoints
- [ ] Integration Test to make sure we don't send disabled breakpoints
to DAP servers
- [x] Database test to make sure we properly serialize/deserialize
BreakpointState

Release Notes:

- N/A

---------

Co-authored-by: Piotr <piotr@zed.dev>
Co-authored-by: Conrad <conrad@zed.dev>
Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>

crates/project/src/debugger/breakpoint_store.rs

@@ -256,6 +256,21 @@ impl BreakpointStore {
                     breakpoint_set.breakpoints.push(breakpoint.clone());
                 }
             }
+            BreakpointEditAction::InvertState => {
+                if let Some((_, bp)) = breakpoint_set
+                    .breakpoints
+                    .iter_mut()
+                    .find(|value| breakpoint == **value)
+                {
+                    if bp.is_enabled() {
+                        bp.state = BreakpointState::Disabled;
+                    } else {
+                        bp.state = BreakpointState::Enabled;
+                    }
+                } else {
+                    log::error!("Attempted to invert a breakpoint's state that doesn't exist ");
+                }
+            }
             BreakpointEditAction::EditLogMessage(log_message) => {
                 if !log_message.is_empty() {
                     breakpoint.1.kind = BreakpointKind::Log(log_message.clone());
@@ -351,7 +366,7 @@ impl BreakpointStore {
         &'a self,
         buffer: &'a Entity<Buffer>,
         range: Option<Range<text::Anchor>>,
-        buffer_snapshot: BufferSnapshot,
+        buffer_snapshot: &'a BufferSnapshot,
         cx: &App,
     ) -> impl Iterator<Item = &'a (text::Anchor, Breakpoint)> + 'a {
         let abs_path = Self::abs_path_from_buffer(buffer, cx);
@@ -361,11 +376,10 @@ impl BreakpointStore {
             .flat_map(move |file_breakpoints| {
                 file_breakpoints.breakpoints.iter().filter({
                     let range = range.clone();
-                    let buffer_snapshot = buffer_snapshot.clone();
                     move |(position, _)| {
                         if let Some(range) = &range {
-                            position.cmp(&range.start, &buffer_snapshot).is_ge()
-                                && position.cmp(&range.end, &buffer_snapshot).is_le()
+                            position.cmp(&range.start, buffer_snapshot).is_ge()
+                                && position.cmp(&range.end, buffer_snapshot).is_le()
                         } else {
                             true
                         }
@@ -417,6 +431,7 @@ impl BreakpointStore {
                             position,
                             path: path.clone(),
                             kind: breakpoint.kind.clone(),
+                            state: breakpoint.state,
                         }
                     })
                     .collect()
@@ -439,6 +454,7 @@ impl BreakpointStore {
                                 position,
                                 path: path.clone(),
                                 kind: breakpoint.kind.clone(),
+                                state: breakpoint.state,
                             }
                         })
                         .collect(),
@@ -487,9 +503,13 @@ impl BreakpointStore {
 
                     for bp in bps {
                         let position = snapshot.anchor_before(PointUtf16::new(bp.position, 0));
-                        breakpoints_for_file
-                            .breakpoints
-                            .push((position, Breakpoint { kind: bp.kind }))
+                        breakpoints_for_file.breakpoints.push((
+                            position,
+                            Breakpoint {
+                                kind: bp.kind,
+                                state: bp.state,
+                            },
+                        ))
                     }
                     new_breakpoints.insert(path, breakpoints_for_file);
                 }
@@ -530,6 +550,7 @@ type LogMessage = Arc<str>;
 #[derive(Clone, Debug)]
 pub enum BreakpointEditAction {
     Toggle,
+    InvertState,
     EditLogMessage(LogMessage),
 }
 
@@ -569,16 +590,60 @@ impl Hash for BreakpointKind {
     }
 }
 
+#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq)]
+pub enum BreakpointState {
+    Enabled,
+    Disabled,
+}
+
+impl BreakpointState {
+    #[inline]
+    pub fn is_enabled(&self) -> bool {
+        matches!(self, BreakpointState::Enabled)
+    }
+
+    #[inline]
+    pub fn is_disabled(&self) -> bool {
+        matches!(self, BreakpointState::Disabled)
+    }
+
+    #[inline]
+    pub fn to_int(&self) -> i32 {
+        match self {
+            BreakpointState::Enabled => 0,
+            BreakpointState::Disabled => 1,
+        }
+    }
+}
+
 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 pub struct Breakpoint {
     pub kind: BreakpointKind,
+    pub state: BreakpointState,
 }
 
 impl Breakpoint {
+    pub fn new_standard() -> Self {
+        Self {
+            kind: BreakpointKind::Standard,
+            state: BreakpointState::Enabled,
+        }
+    }
+
+    pub fn new_log(log_message: &str) -> Self {
+        Self {
+            kind: BreakpointKind::Log(log_message.to_owned().into()),
+            state: BreakpointState::Enabled,
+        }
+    }
+
     fn to_proto(&self, _path: &Path, position: &text::Anchor) -> Option<client::proto::Breakpoint> {
         Some(client::proto::Breakpoint {
             position: Some(serialize_text_anchor(position)),
-
+            state: match self.state {
+                BreakpointState::Enabled => proto::BreakpointState::Enabled.into(),
+                BreakpointState::Disabled => proto::BreakpointState::Disabled.into(),
+            },
             kind: match self.kind {
                 BreakpointKind::Standard => proto::BreakpointKind::Standard.into(),
                 BreakpointKind::Log(_) => proto::BreakpointKind::Log.into(),
@@ -599,8 +664,22 @@ impl Breakpoint {
                 }
                 None | Some(proto::BreakpointKind::Standard) => BreakpointKind::Standard,
             },
+            state: match proto::BreakpointState::from_i32(breakpoint.state) {
+                Some(proto::BreakpointState::Disabled) => BreakpointState::Disabled,
+                None | Some(proto::BreakpointState::Enabled) => BreakpointState::Enabled,
+            },
         })
     }
+
+    #[inline]
+    pub fn is_enabled(&self) -> bool {
+        self.state.is_enabled()
+    }
+
+    #[inline]
+    pub fn is_disabled(&self) -> bool {
+        self.state.is_disabled()
+    }
 }
 
 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
@@ -608,6 +687,7 @@ pub struct SerializedBreakpoint {
     pub position: u32,
     pub path: Arc<Path>,
     pub kind: BreakpointKind,
+    pub state: BreakpointState,
 }
 
 impl From<SerializedBreakpoint> for dap::SourceBreakpoint {