81 lines
2.5 KiB
Rust
81 lines
2.5 KiB
Rust
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use std::collections::hash_map::DefaultHasher;
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use std::hash::{Hash, Hasher};
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use std::path::PathBuf;
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pub fn compute_content_hash(content: &str, hasher: &mut DefaultHasher) -> u64 {
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content.hash(hasher);
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hasher.finish()
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}
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#[derive(Clone)]
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pub struct Tab {
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pub content: String,
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pub original_content_hash: u64,
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pub last_content_hash: u64,
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pub file_path: Option<PathBuf>,
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pub is_modified: bool,
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pub title: String,
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hasher: DefaultHasher,
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}
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impl Tab {
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pub fn new_empty(tab_number: usize) -> Self {
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let content = String::new();
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let mut hasher = DefaultHasher::new();
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let hash = compute_content_hash(&content, &mut hasher);
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Self {
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original_content_hash: hash,
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last_content_hash: hash,
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content,
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file_path: None,
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is_modified: false,
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title: format!("new_{}", tab_number),
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hasher,
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}
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}
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pub fn new_with_file(content: String, file_path: PathBuf) -> Self {
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let title = file_path
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.file_name()
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.and_then(|n| n.to_str())
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.unwrap_or("Untitled")
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.to_string();
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let mut hasher = DefaultHasher::new();
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let hash = compute_content_hash(&content, &mut hasher);
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Self {
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original_content_hash: hash,
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last_content_hash: hash,
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content,
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file_path: Some(file_path),
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is_modified: false,
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title,
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hasher,
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}
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}
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pub fn get_display_title(&self) -> String {
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let modified_indicator = if self.is_modified { "*" } else { "" };
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format!("{}{}", self.title, modified_indicator)
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}
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pub fn update_modified_state(&mut self) {
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// Compare current content hash with original content hash to determine if modified
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// Special case: new_X tabs are only considered modified if they have content
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if self.title.starts_with("new_") {
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self.is_modified = !self.content.is_empty();
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} else {
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let current_hash = compute_content_hash(&self.content, &mut self.hasher);
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self.is_modified = current_hash != self.last_content_hash;
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self.last_content_hash = current_hash;
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}
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}
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pub fn mark_as_saved(&mut self) {
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// Update the original content hash to match current content after saving
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self.original_content_hash = compute_content_hash(&self.content, &mut self.hasher);
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self.last_content_hash = self.original_content_hash;
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self.is_modified = false;
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}
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}
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