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|
//! utility functions to help handle the `:select` internal
use {
super::*,
crate::{
app::*,
browser::BrowserState,
command::TriggerType,
display::Screen,
path::{self, PathAnchor},
tree::Tree,
},
std::path::{Path, PathBuf},
};
/// general implementation for verbs based on the :select internal with optionally
/// a bang or an argument.
pub fn on_internal(
internal_exec: &InternalExecution,
input_invocation: Option<&VerbInvocation>,
trigger_type: TriggerType,
tree: &mut Tree,
app_state: & AppState,
cc: &CmdContext,
) -> CmdResult {
let screen = cc.app.screen;
info!(
"internal_select.on_internal internal_exec={:?} input_invocation={:?} trygger_type={:?}",
internal_exec,
input_invocation,
trigger_type,
);
let bang = input_invocation
.map(|inv| inv.bang)
.unwrap_or(internal_exec.bang);
let input_arg = input_invocation.as_ref()
.and_then(|invocation| invocation.args.as_ref());
match trigger_type {
TriggerType::Input(verb) => {
let path = path_from_input(
verb,
internal_exec,
&tree.selected_line().path,
input_arg,
app_state,
);
on_path(path, tree, screen, bang)
}
_ => {
// the :select internal was triggered by a key
if let Some(arg) = &internal_exec.arg {
// the internal_execution specifies the path to use
// (it may come from a configured verb whose execution is
// `:select some/path`).
// The given path may be relative hence the need for the
// state's selection
let path = path::path_from(
&tree.selected_line().path,
PathAnchor::Unspecified,
arg,
);
let bang = input_invocation
.map(|inv| inv.bang)
.unwrap_or(internal_exec.bang);
on_path(path, tree, screen, bang)
} else {
// there's nothing really to do here
CmdResult::Keep
}
}
}
}
/// Compute the path to go to in case of the internal being triggered from
/// the input.
///
/// This path depends on the verb (which may hardcore the path or have a
/// pattern), from the selection,
fn path_from_input(
verb: &Verb,
internal_exec: &InternalExecution,
base_path: &Path, // either the selected path or the root path
input_arg: Option<&String>,
app_state: &AppState,
) -> PathBuf {
match (input_arg, internal_exec.arg.as_ref()) {
(Some(input_arg), Some(verb_arg)) => {
// The verb probably defines some patttern which uses the input.
// For example:
// {
// invocation: "gotar {path}"
// execution: ":select {path}/target"
// }
// (or that input is useless)
let path_builder = ExecutionStringBuilder::with_invocation(
&verb.invocation_parser,
SelInfo::from_path(base_path),
app_state,
Some(input_arg),
);
path_builder.path(verb_arg)
}
(Some(input_arg), None) => {
// the verb defines nothing
// The :select internal execution was triggered from the
// input (which must be a kind of alias for :select)
// so we do exactly what the input asks for
path::path_from(base_path, PathAnchor::Unspecified, input_arg)
}
(None, Some(verb_arg)) => {
// the verb defines the path where to go..
// the internal_execution specifies the path to use
// (it may come from a configured verb whose execution is
// `:select some/path`).
// The given path may be relative hence the need for the
// state's selection
// (we assume a check before ensured it doesn't need an input)
path::path_from(base_path, PathAnchor::Unspecified, verb_arg)
}
(None, None) => {
// This doesn't really make sense: we're selecting the currently
// selected path
base_path.to_path_buf()
}
}
}
pub fn on_path(
path: PathBuf,
tree: &mut Tree,
screen: Screen,
in_new_panel: bool,
) -> CmdResult {
info!("executing :select on path {:?}", &path);
if in_new_panel {
warn!("bang in :select isn't supported yet");
}
if tree.try_select_path(&path) {
tree.make_selection_visible(BrowserState::page_height(screen) as usize);
}
CmdResult::Keep
}
|
