Mountain/ApplicationState/State/FeatureState/TreeViews/
TreeViewState.rs

1//! # TreeViewState Module (ApplicationState)
2//!
3//! ## RESPONSIBILITIES
4//! Manages tree view providers state including tree view metadata, data,
5//! and presentation state.
6//!
7//! ## ARCHITECTURAL ROLE
8//! TreeViewState is part of the **FeatureState** module, representing
9//! tree view providers state organized by tree view ID.
10//!
11//! ## KEY COMPONENTS
12//! - TreeViewState: Main struct containing active tree views map
13//! - Default: Initialization implementation
14//! - Helper methods: Tree view manipulation utilities
15//!
16//! ## ERROR HANDLING
17//! - Thread-safe access via `Arc<Mutex<...>>`
18//! - Proper lock error handling with `MapLockError` helpers
19//!
20//! ## LOGGING
21//! State changes are logged at appropriate levels (debug, info, warn, error).
22//!
23//! ## PERFORMANCE CONSIDERATIONS
24//! - Lock mutexes briefly and release immediately
25//! - Avoid nested locks to prevent deadlocks
26//! - Use Arc for shared ownership across threads
27//!
28//! ## TODO
29//! - [ ] Add tree view validation invariants
30//! - [ ] Implement tree view lifecycle events
31//! - [ ] Add tree view metrics collection
32
33use std::{
34	collections::HashMap,
35	sync::{Arc, Mutex as StandardMutex},
36};
37
38use log::debug;
39
40use crate::ApplicationState::DTO::TreeViewStateDTO::TreeViewStateDTO;
41
42/// Active tree views state containing tree views by ID.
43#[derive(Clone)]
44pub struct TreeViewState {
45	/// Active tree views organized by ID.
46	pub ActiveTreeViews:Arc<StandardMutex<HashMap<String, TreeViewStateDTO>>>,
47}
48
49impl Default for TreeViewState {
50	fn default() -> Self {
51		debug!("[TreeViewState] Initializing default tree view state...");
52
53		Self { ActiveTreeViews:Arc::new(StandardMutex::new(HashMap::new())) }
54	}
55}
56
57impl TreeViewState {
58	/// Gets all active tree views.
59	pub fn GetAll(&self) -> HashMap<String, TreeViewStateDTO> {
60		self.ActiveTreeViews.lock().ok().map(|guard| guard.clone()).unwrap_or_default()
61	}
62
63	/// Gets a tree view by its ID.
64	pub fn Get(&self, id:&str) -> Option<TreeViewStateDTO> {
65		self.ActiveTreeViews.lock().ok().and_then(|guard| guard.get(id).cloned())
66	}
67
68	/// Adds or updates a tree view.
69	pub fn AddOrUpdate(&self, id:String, tree_view:TreeViewStateDTO) {
70		if let Ok(mut guard) = self.ActiveTreeViews.lock() {
71			guard.insert(id, tree_view);
72			debug!("[TreeViewState] Tree view added/updated");
73		}
74	}
75
76	/// Removes a tree view by its ID.
77	pub fn Remove(&self, id:&str) {
78		if let Ok(mut guard) = self.ActiveTreeViews.lock() {
79			guard.remove(id);
80			debug!("[TreeViewState] Tree view removed: {}", id);
81		}
82	}
83
84	/// Clears all active tree views.
85	pub fn Clear(&self) {
86		if let Ok(mut guard) = self.ActiveTreeViews.lock() {
87			guard.clear();
88			debug!("[TreeViewState] All tree views cleared");
89		}
90	}
91
92	/// Gets the count of active tree views.
93	pub fn Count(&self) -> usize { self.ActiveTreeViews.lock().ok().map(|guard| guard.len()).unwrap_or(0) }
94
95	/// Checks if a tree view exists.
96	pub fn Contains(&self, id:&str) -> bool {
97		self.ActiveTreeViews
98			.lock()
99			.ok()
100			.map(|guard| guard.contains_key(id))
101			.unwrap_or(false)
102	}
103}
Mountain/ApplicationState/State/FeatureState/TreeViews/TreeViewState.rs

Mountain/ApplicationState/State/FeatureState/TreeViews/
TreeViewState.rs
