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#![allow(unused_variables)] #![allow(unused_imports)] #![allow(dead_code)] use intmap::IntMap; use std::{collections::HashMap, fmt}; pub mod row; pub mod collumn; pub mod collection; #[derive(Clone, Debug)] pub struct Channel<'a> { pub name: &'a str, pub tag: u8, pub visible: bool, } #[derive(Clone, Debug)] pub struct DataFrame<M, D> where M: fmt::Display, { // metric contain something like a timestamp, or month names pub metric: M, // data key is tag for stream meta (a.k.a column tag) // D is pub data: IntMap<D>, } pub struct DataCellChangeRecord<T> where T: fmt::Display, { pub row_index: i64, pub column_index: i64, pub old_value: T, pub new_value: T, } impl<T> DataCellChangeRecord<T> where T: fmt::Display, { fn new(row_index: i64, column_index: i64, old_value: T, new_value: T) -> Self { Self { row_index, column_index, old_value, new_value, } } } impl<T> fmt::Display for DataCellChangeRecord<T> where T: fmt::Display, { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!( f, "DataCellChangeRecord {{ rowIndex: {}, colIndex; {}, {}, {} }}", self.row_index, self.column_index, self.old_value, self.new_value ) } } pub struct DataCollectionChangeRecord { pub index: usize, pub added_count: usize, pub removed_count: usize, } impl DataCollectionChangeRecord { fn new(index: usize, added_count: usize, removed_count: usize) -> Self { Self { index, added_count, removed_count, } } } impl fmt::Display for DataCollectionChangeRecord { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!( f, "DataCollectionChangeRecord {{ index: {}, added: {}, removed: {} }}", self.index, self.added_count, self.removed_count ) } } // should impl getters/setters pub trait TableEntity {} #[derive(Clone)] pub struct DataStream<'a, M, D> where M: fmt::Display, D: fmt::Display, { pub meta: Vec<Channel<'a>>, // data is renamed to frames pub frames: Vec<DataFrame<M, D>>, // column_index_by_name: HashMap<String, usize>, // columns: Option<DataColumnCollection<M, D>>, // rows: Option<DataRowCollection<M, D>>, // cellChangeController: StreamController<DataCellChangeRecord>, // columnsChangeController: StreamController<DataCollectionChangeRecord>, // rowsChangeController: StreamController<DataCollectionChangeRecord>, } impl<'a, M, D> Default for DataStream<'a, M, D> where M: fmt::Display, D: fmt::Display, { fn default() -> Self { Self{ meta: Vec::new(), frames: Vec::new(), } } } impl<'a, M, D> DataStream<'a, M, D> where M: fmt::Display, D: fmt::Display, { /// Creates a [DataTable] with optional data [data]. /// /// * 'metadata' - contains row names /// /// The first row in [data] contains the column names. /// The data type of each column is determined by the first non-null value /// in that column. /// /// All values in each column are expected to be of the same type, /// and all rows are expected to have the same length. // data is optional pub fn new(metadata: Vec<Channel>, data: Vec<DataFrame<M, D>>) -> Self { // let data_table = DataTable { // // column_index_by_name: Default::default(), // // columns: None, // // rows: None, // }; // let column_index_by_name = HashMap::<String, usize>::new(); // let rows: DataRowCollection<String> = DataRowCollection::new(&data_table); // let columns: DataColumnCollection = DataColumnCollection::new(&data_table); // let col_count = metadata.len(); // let row_count = data.len(); // // first deal with columns // for col_idx in 0..col_count { // let name = metadata[col_idx]; // columns.add(DataColumn { index: 0, name }); // } // rows.add_all(data); unimplemented!() } fn on_cell_changed(row_index: i64, column_index: i64, old_value: String, new_value: String) { // if (cellChangeController != null) { // let record = // DataCellChangeRecord(rowIndex, columnIndex, oldValue, newValue); // cellChangeController.add(record); // } } // fn onRowsOrColumnsInserted(source: DataCollectionBase, index: i64, count: i64) { // // let record = DataCollectionChangeRecord(index, count, 0); // // if (source == columns) { // // insertColumns(index, count); // // updateColumnIndexes(index); // // columnsChangeController?.add(record); // // } else { // // rowsChangeController?.add(record); // // } // } // fn onRowsOrColumnsRemoved(source: DataCollectionBase, index: i64, count: i64) { // // let record = DataCollectionChangeRecord(index, 0, count); // // if (source == columns) { // // removeColumns(index, count); // // updateColumnIndexes(index); // // columnsChangeController?.add(record); // // } else { // // rowsChangeController?.add(record); // // } // } fn insert_columns(start: i64, count: i64) { // for (let row in rows) { // row.cells.insertAll(start, List(count)); // } } fn remove_columns(start: i64, count: i64) { // for (let row in rows) { // row.cells.remove_range(start, start + count); // } } fn update_column_indexes(start: i64) { // let end = columns.length; // while (start < end) { // columnIndexByName[_columns[start].name] = start++; // } } // /// The columns in this [DataTable]. // DataColumnCollection get columns => columns; // /// The rows (without the header row) in this [DataTable]. // DataRowCollection get rows => rows; // /// Fired when a cell is changed. // Stream<DataCellChangeRecord> get onCellChange { // ??= - Assign the value if the variable is null // cellChangeController ??= StreamController.broadcast( // sync: true, // onCancel: () { // cellChangeController = null; // }); // return cellChangeController.stream; // } // /// Fired when [columns] are changed. // Stream<DataCollectionChangeRecord> get onColumnsChange { // ??= - Assign the value if the variable is null // columnsChangeController ??= StreamController.broadcast( // sync: true, // onCancel: () { // columnsChangeController = null; // }); // return columnsChangeController.stream; // } // /// Fired when [rows] are changed. // Stream<DataCollectionChangeRecord> get onRowsChange { // ??= - Assign the value if the variable is null // rowsChangeController ??= StreamController.broadcast( // sync: true, // onCancel: () { // rowsChangeController = null; // }); // return rowsChangeController.stream; // } // /// Gets the index of the column specified by [name]. // i64 getColumnIndexByName(String name) { // if (columnIndexByName.containsKey(name)) { // return columnIndexByName[name]; // } // return -1; // } // /// Gets the values of the column specified by [columnIndex]. // Vec<T> getColumnValues<T>(i64 columnIndex) { // let list = <T>[]; // for (let row in rows) { // list.add(row[columnIndex]); // } // return list; // } } #[cfg(test)] mod tests { #[test] fn it_works() { assert_eq!(2 + 2, 4); } }