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//! The tables a project holds: the store behind them, and every edit that
//! reaches one.
//!
//! A continuation of [`Workspace`]'s one `impl`, which is why it opens on
//! `use super::*`: these methods work on the same struct and reach the same
//! names as the rest of it.
use super::*;
impl Workspace {
/// A fresh table in the active project, opened as it lands.
///
/// One text column, because the store will not make a table without one
/// and a column you can rename is a better start than a dialog asking for
/// the shape before anything exists to shape.
pub fn new_table(&mut self, cx: &mut Context<Self>) -> Option<usize> {
if !self.settings.features.tables {
return None;
}
let at = self.active?;
let project = self.projects.get_mut(at)?;
// The one place a store is created: making a table is the moment the
// project has something to keep in one.
if project.data.is_none() {
project.data = Data::open(&project.path).ok();
}
let mut name = UNTITLED.to_owned();
for n in 2.. {
if !project.tables.iter().any(|table| table.name == name) {
break;
}
name = format!("{UNTITLED} {n}");
}
let column = Column {
name: "Name".to_owned(),
kind: ColType::Text,
};
let key = project
.data
.as_mut()?
.create(&name, None, &[column], None)
.ok()?
.key;
project.reload_tables();
// Found by key rather than taken as a known row: the list is ordered by
// age, and where the newest lands is the list's business, not this one's.
let ix = project.tables.iter().position(|table| table.key == key)?;
self.open_table(at, ix, cx);
Some(ix)
}
/// Every project's tables are on show, so picking one brings its project
/// forward with it.
pub fn open_table(&mut self, project: usize, ix: usize, cx: &mut Context<Self>) {
let Some(open) = self.projects.get_mut(project) else {
return;
};
if ix >= open.tables.len() {
return;
}
open.table = Some(ix);
open.reload_page();
let id = open.tables[ix].key.clone();
self.active = Some(project);
self.remember(project, state::Kind::Table, id, cx);
cx.notify();
}
/// Drop the table: its rows go with it.
pub fn delete_table(&mut self, project: usize, ix: usize, cx: &mut Context<Self>) {
let Some(open) = self.projects.get_mut(project) else {
return;
};
let Some(key) = open.tables.get(ix).map(|table| table.key.clone()) else {
return;
};
if let Some(data) = open.data.as_mut() {
let _ = data.remove(&key);
}
open.table = open
.table
.filter(|shown| *shown != ix)
.map(|shown| if shown > ix { shown - 1 } else { shown });
open.reload_tables();
cx.notify();
}
/// Run `f` against the open table's store, then re-read what it did.
///
/// Every table mutation goes through here, so none of them can forget the
/// reload — a grid still showing the row you just deleted is the bug this
/// shape makes unwritable.
fn with_table<T>(
&mut self,
cx: &mut Context<Self>,
f: impl FnOnce(&mut Data, &str) -> T,
) -> Option<T> {
let at = self.active?;
let project = self.projects.get_mut(at)?;
let key = project
.table
.and_then(|ix| project.tables.get(ix))
.map(|table| table.key.clone())?;
let data = project.data.as_mut()?;
let done = f(data, &key);
// Working in a table is what makes it the table you were last in, and
// the list is ordered by that.
let _ = data.touch(&key);
project.reload_tables();
cx.notify();
Some(done)
}
/// The name of column `at`, which is what the store addresses one by.
fn column_name(&self, at: usize) -> Option<String> {
let page = self.active_page()?;
page.columns.get(at).map(|column| column.name.clone())
}
/// Write one cell. The text goes in as text whatever the column holds —
/// SQLite's affinity converts it on the way, so a number typed into a
/// number column lands as one and the same text in a text column stays put.
pub fn write_cell(&mut self, rowid: i64, at: usize, text: String, cx: &mut Context<Self>) {
let Some(column) = self.column_name(at) else {
return;
};
let value = match text.is_empty() {
true => serde_json::Value::Null,
false => serde_json::Value::String(text),
};
self.with_table(cx, |data, key| {
let _ = data.write_cells(
key,
&[Edit {
rowid,
column,
value,
}],
);
});
}
pub fn add_row(&mut self, cx: &mut Context<Self>) -> Option<i64> {
self.with_table(cx, |data, key| {
data.add_rows(key, 1)
.ok()
.and_then(|ids| ids.first().copied())
})
.flatten()
}
pub fn delete_row(&mut self, rowid: i64, cx: &mut Context<Self>) {
self.with_table(cx, |data, key| {
let _ = data.delete_rows(key, &[rowid]);
});
}
/// A fresh text column, named so it does not collide with one already
/// there — the header is where it gets its real name.
pub fn add_column(&mut self, cx: &mut Context<Self>) {
let taken: Vec<String> = self
.active_page()
.map(|page| page.columns.iter().map(|col| col.name.clone()).collect())
.unwrap_or_default();
let mut name = COLUMN.to_owned();
for n in 2.. {
if !taken.contains(&name) {
break;
}
name = format!("{COLUMN} {n}");
}
self.with_table(cx, |data, key| {
let _ = data.write_column(key, &name, Some(ColType::Text), None);
});
}
/// Rename column `at`, retype it, or both — one call, as the store has it.
pub fn write_column(
&mut self,
at: usize,
kind: Option<ColType>,
rename: Option<String>,
cx: &mut Context<Self>,
) {
let Some(column) = self.column_name(at) else {
return;
};
self.with_table(cx, |data, key| {
let _ = data.write_column(key, &column, kind, rename.as_deref());
});
}
pub fn delete_column(&mut self, at: usize, cx: &mut Context<Self>) {
let Some(column) = self.column_name(at) else {
return;
};
self.with_table(cx, |data, key| {
let _ = data.drop_column(key, &column);
});
}
/// The display name only. The key stays where it is, so a query already
/// written against this table goes on running.
pub fn rename_table(&mut self, key: &str, name: String, cx: &mut Context<Self>) {
self.with_store(key, cx, |data, key| {
let _ = data.update(key, Some(name.trim()), None);
});
}
pub fn archive_table(&mut self, key: &str, archived: bool, cx: &mut Context<Self>) {
self.with_store(key, cx, |data, key| {
let _ = data.archive(key, archived);
});
self.prune_archived(cx);
}
/// Run `f` against whichever store holds `key`, then re-read what it did.
/// Named rather than open: the sidebar acts on rows the pane is not showing.
fn with_store(
&mut self,
key: &str,
cx: &mut Context<Self>,
f: impl FnOnce(&mut Data, &str),
) -> Option<()> {
let project = self
.projects
.iter_mut()
.find(|open| open.tables.iter().any(|table| table.key == key))?;
f(project.data.as_mut()?, key);
project.reload_tables();
cx.notify();
Some(())
}
/// The rows on screen. Gated beside [`Self::active_table`]: the table pane
/// reads the page, not the table, so both have to be shut for it to close.
pub fn active_page(&self) -> Option<&Page> {
if !self.settings.features.tables {
return None;
}
self.active_project()?.open_page()
}
pub fn active_table(&self) -> Option<&Table> {
if !self.settings.features.tables {
return None;
}
let project = self.active_project()?;
project.tables.get(project.table?)
}
}