wip: ironcalc model helper methods

src/book/mod.rs

@@ -1,20 +1,68 @@
 use anyhow::{anyhow, Result};
 use ironcalc::base::{Model, types::{Worksheet, SheetData}};
 
+/// A spreadsheet book with some internal state tracking.
 pub struct Book {
     model: Model,
     current_sheet: u32,
-    current_location: (u32, u32),
+    current_location: (i32, i32),
 }
 
 impl Book {
+    /// Get the currently set sheets name.
     pub fn get_sheet_name(&self) -> Result<&str> {
         Ok(&self.get_sheet()?.name)
     }
 
+    /// Get the sheet data for the current worksheet.
     pub fn get_sheet_data(&self) -> Result<&SheetData> {
         Ok(&self.get_sheet()?.sheet_data)
     }
+
+    /// Get a cells formatted content.
+    pub fn get_cell_rendered(&self) -> Result<String> {
+        Ok(self.model.get_formatted_cell_value(self.current_sheet, self.current_location.0, self.current_location.1)
+            .map_err(|s| anyhow!("Unable to format cell {}", s))?)
+    }
+    
+    /// Get a cells actual content as a string.
+    pub fn get_cell_contents(&self) -> Result<String> {
+        Ok(self.model.get_cell_content(self.current_sheet, self.current_location.0, self.current_location.1)
+            .map_err(|s| anyhow!("Unable to format cell {}", s))?)
+    }
+
+    pub fn edit_cell(&mut self, value: String) -> Result<()> {
+        self.model.set_user_input(self.current_sheet, self.current_location.0, self.current_location.1, value).map_err(|e| anyhow!("Invalid cell contents: {}", e))?;
+        Ok(())
+    }
+
+    /// Get the current sheets dimensions. This is a somewhat expensive calculation.
+    pub fn get_dimensions(&self) -> Result<(usize, usize)> {
+        let dimensions = self.get_sheet()?.dimension();
+        Ok((dimensions.max_row.try_into()?, dimensions.max_column.try_into()?))
+    }
+
+    /// Select a sheet by name.
+    pub fn select_sheet_by_name(&mut self, name: &str) -> bool {
+        if let Some(sheet) = self.model.workbook.worksheets.iter().find(|sheet| sheet.name == name) {
+            self.current_sheet = sheet.sheet_id;
+            return true;
+        }
+        false
+    }
+
+    pub fn get_sheet_names(&self) -> Vec<String> {
+        self.model.workbook.get_worksheet_names()
+    }
+    
+    /// Select a sheet by id.
+    pub fn select_sheet_by_id(&mut self, id: u32) -> bool {
+        if let Some(sheet) = self.model.workbook.worksheets.iter().find(|sheet| sheet.sheet_id == id) {
+            self.current_sheet = sheet.sheet_id;
+            return true;
+        }
+        false
+    }
     
     fn get_sheet(&self) -> Result<&Worksheet> {
         Ok(self.model.workbook.worksheet(self.current_sheet)