better column resizing

src/model.rs

@@ -1,21 +1,23 @@
 use crate::*;
 
-mod column;   pub use self::column::*;
-mod entry;    pub use self::entry::*;
-mod metadata; pub use self::metadata::*;
-mod task;     pub use self::task::*;
+mod column; pub use self::column::*;
+mod entry;  pub use self::entry::*;
+mod task;   pub use self::task::*;
 
 /// The application state.
 pub struct Taggart {
-    pub _root:   PathBuf,
-    pub entries: Vec<Entry>,
-    pub cursor:  usize,
-    pub offset:  usize,
-    pub column:  usize,
-    pub columns: Columns<fn(&Entry)->Option<Arc<str>>, fn(&mut Self, usize, &str)>,
-    pub display: Measure<TuiOut>,
-    pub tasks:   Vec<Task>,
-    pub mode:    Option<Mode>,
+    pub _root:    PathBuf,
+    pub entries:  Vec<Entry>,
+    pub cursor:   usize,
+    pub offset:   usize,
+    pub column:   usize,
+    pub columns:  Columns<fn(&Entry)->Option<Arc<str>>, fn(&mut Self, usize, &str)>,
+    pub display:  Measure<TuiOut>,
+    pub tasks:    Vec<Task>,
+    /// State of modal dialog of editing field
+    pub mode:     Option<Mode>,
+    /// Count of modified items
+    pub modified: usize,
 }
 
 #[derive(Debug)]
@@ -38,6 +40,7 @@ impl Taggart {
             columns: Columns::default(),
             tasks:   vec![],
             entries,
+            modified: 0
         })
     }
     /// Make sure cursor is always in view
@@ -58,4 +61,15 @@ impl Taggart {
             self.column = self.columns.0.len().saturating_sub(1)
         }
     }
+    /// Count modified entries
+    pub(crate) fn count_modified (&mut self) -> usize {
+        let mut modified = 0;
+        for entry in self.entries.iter() {
+            if entry.is_modified() {
+                modified += 1;
+            }
+        }
+        self.modified = modified;
+        self.modified
+    }
 }