BonsaiDen
Dynamic table
Hello, is it possible to create a table at running time dynamically? or create columns at runtime??
I think it's currently not possible to create a table at runtime because an enum is defining the columns. I'll probably rewrite the library in the following days/weeks to make that possible.
@gyscos, it seems like you maintain(ed) this library so do know if dynamic tables are possible?
Hi,
Nothing forces you to use an enum as column type. You could use really any type that implements the required traits. u32 would work too.
You may need to re-create the table if the columns change though, I have not tested altering the columns when data is already present.
Here is a simple example:
use cursive::traits::{Resizable, With};
use cursive_table_view::{TableView, TableViewItem};
#[derive(Clone)]
struct Row(Vec<String>); 2 implementations
impl TableViewItem<usize> for Row {
fn to_column(&self, column: usize) -> String {
self.0[column].clone()
}
fn cmp(&self, other: &Self, column: usize) -> std::cmp::Ordering {
self.0[column].cmp(&other.0[column])
}
}
fn main() {
let n_cols = 6;
let n_rows = 30;
let cell_width = 20;
let table = TableView::<Row, usize>::new()
.with(|table| {
for i in 0..n_cols {
table.add_column(i, format!("Column {i}"), |c| c.width(cell_width));
}
})
.default_column(0)
.with(|table| {
for j in 0..30 {
table.insert_item(Row((0..n_cols)
.map(|i| format!("Row {j}, column {i}"))
.collect()));
}
})
.fixed_size((n_cols * (cell_width + 2), n_rows + 2)); // There is 2 cells of padding around each column
let mut siv = cursive::default();
siv.add_layer(cursive::views::Dialog::around(table));
siv.run();
}
I do agree that it would be a good idea to include that as example.
In addition, the current Copy constraint on the key might be removed eventually.
Hey, thanks for the quick response. Okay, didn't know you could use any type (because there aren't any examples without enums).
Making this an example would be nice, so it is made more obvious that you can use just about any type (that implements the required traits).
One last thing, the examples are just normal rust files, and their corresponding Cargo.toml files are missing. So if you want to run the example locally, you have to write the dependencies yourself. Is this by design? If not, I can, if you want, open a PR and make these quick changes (basically move each example into its rust project)