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// Copyright (c) Meta Platforms, Inc. and affiliates.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use crate::app::{App, AppResult, ProcessSortColumn, ProcessGroupSortColumn, ProcessViewState, SelectedTab, SortDirection};
use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
match app.selected_tab {
SelectedTab::Inspect => match key_event.code {
KeyCode::Esc | KeyCode::Char('q') => {
app.quit();
}
KeyCode::Char('c') | KeyCode::Char('C')
if key_event.modifiers == KeyModifiers::CONTROL =>
{
app.quit();
}
KeyCode::Char('i') | KeyCode::Char('I') => {
app.selected_tab = SelectedTab::Process;
}
KeyCode::Right => app.next_tab(),
KeyCode::Left => app.prev_tab(),
KeyCode::Char('j') | KeyCode::Down => app.inspect_scroll_state.scroll_down(),
KeyCode::Char('k') | KeyCode::Up => app.inspect_scroll_state.scroll_up(),
KeyCode::Char('f') | KeyCode::PageDown => app.inspect_scroll_state.scroll_page_down(),
KeyCode::Char('b') | KeyCode::PageUp => app.inspect_scroll_state.scroll_page_up(),
KeyCode::Char('g') | KeyCode::Home => app.inspect_scroll_state.scroll_to_top(),
KeyCode::Char('G') | KeyCode::End => app.inspect_scroll_state.scroll_to_bottom(),
KeyCode::Char('?') => {
app.show_help = !app.show_help;
}
_ => {}
},
SelectedTab::ProcessGroup => {
match key_event.code {
KeyCode::Esc | KeyCode::Char('q') => app.quit(),
KeyCode::Char('c') | KeyCode::Char('C')
if key_event.modifiers == KeyModifiers::CONTROL =>
{
app.quit()
}
KeyCode::Right => app.next_tab(),
KeyCode::Left => app.prev_tab(),
KeyCode::Down => {
// Get the list first
if let Some(list) = app.tab_lists.get(&app.selected_tab) {
// Then get the mutable state
if let Some(table_state) = app.table_states.get_mut(&app.selected_tab) {
let amount_items = list.len(); // Use the list directly
if amount_items == 0 {
// Handle empty list case
table_state.select(None);
} else if let Some(selected) = table_state.selected() {
if selected < amount_items - 1 {
table_state.select(Some(selected + 1));
} else {
table_state.select(Some(0)); // Wrap to top
}
} else {
// Nothing selected, select the first item
table_state.select(Some(0));
}
}
}
}
KeyCode::Up => {
if let Some(list) = app.tab_lists.get(&app.selected_tab) {
if let Some(table_state) = app.table_states.get_mut(&app.selected_tab) {
let amount_items = list.len();
if amount_items == 0 {
} else if let Some(selected) = table_state.selected() {
if selected > 0 {
table_state.select(Some(selected - 1));
} else {
table_state.select(Some(amount_items - 1));
}
} else {
table_state.select(Some(amount_items - 1));
}
}
}
}
KeyCode::Char('?') => {
app.show_help = !app.show_help;
}
KeyCode::Char(c) if key_event.modifiers == KeyModifiers::SHIFT => {
let mut new_sort_column: Option<ProcessGroupSortColumn> = None;
match c {
'T' => new_sort_column = Some(ProcessGroupSortColumn::TotalMemorySize),
'P' => new_sort_column = Some(ProcessGroupSortColumn::Pid),
'N' => new_sort_column = Some(ProcessGroupSortColumn::Name),
'C' => new_sort_column = Some(ProcessGroupSortColumn::ChildrenCount),
_ => {} // Ignore other Shift+key combinations
}
if let Some(sort_col) = new_sort_column {
if app.process_group_sort_column == sort_col {
app.process_group_sort_direction = match app.process_group_sort_direction {
SortDirection::Ascending => SortDirection::Descending,
SortDirection::Descending => SortDirection::Ascending,
};
} else {
app.process_group_sort_column = sort_col;
match sort_col {
ProcessGroupSortColumn::Pid | ProcessGroupSortColumn::Name => {
app.process_group_sort_direction = SortDirection::Ascending;
}
_ => {
// Numerical columns
app.process_group_sort_direction = SortDirection::Descending;
}
}
}
app.sort_and_update_process_group_table();
}
}
_ => {}
}
}
SelectedTab::Process => {
match key_event.code {
KeyCode::Esc | KeyCode::Char('q') => app.quit(),
KeyCode::Char('c') | KeyCode::Char('C')
if key_event.modifiers == KeyModifiers::CONTROL =>
{
app.quit()
}
KeyCode::Right => app.next_tab(),
KeyCode::Left => app.prev_tab(),
KeyCode::Down | KeyCode::Char('j') => {
if let Some(table_state) = app.table_states.get_mut(&SelectedTab::Process) {
if let Some(selected) = table_state.selected() {
let amount_items = app.tab_lists[&SelectedTab::Process].len();
if selected < amount_items.saturating_sub(1) {
table_state.select(Some(selected + 1));
} else if amount_items > 0 {
table_state.select(Some(0));
}
} else if !app.tab_lists[&SelectedTab::Process].is_empty() {
table_state.select(Some(0));
}
}
}
KeyCode::Up | KeyCode::Char('k') => {
if let Some(table_state) = app.table_states.get_mut(&SelectedTab::Process) {
if let Some(selected) = table_state.selected() {
let amount_items = app.tab_lists[&SelectedTab::Process].len();
if selected > 0 {
table_state.select(Some(selected - 1));
} else if amount_items > 0 {
table_state.select(Some(amount_items - 1));
}
} else if !app.tab_lists[&SelectedTab::Process].is_empty() {
let amount_items = app.tab_lists[&SelectedTab::Process].len();
table_state.select(Some(amount_items - 1));
}
}
}
KeyCode::Char('s') => app.process_view_state = ProcessViewState::Stack,
KeyCode::Char('h') => app.process_view_state = ProcessViewState::Heap,
KeyCode::Char('m') => app.process_view_state = ProcessViewState::MessageQueue,
KeyCode::Char('i') | KeyCode::Char('I') => app.selected_tab = SelectedTab::Inspect,
KeyCode::Char('?') => {
app.show_help = !app.show_help;
}
KeyCode::Char(c) if key_event.modifiers == KeyModifiers::SHIFT => {
let mut new_sort_column: Option<ProcessSortColumn> = None;
match c {
'Q' => new_sort_column = Some(ProcessSortColumn::MessageQueueLength),
'M' => new_sort_column = Some(ProcessSortColumn::Memory),
'T' => new_sort_column = Some(ProcessSortColumn::TotalBinVHeap),
'B' => new_sort_column = Some(ProcessSortColumn::BinVHeap),
'P' => new_sort_column = Some(ProcessSortColumn::Pid),
'N' => new_sort_column = Some(ProcessSortColumn::Name),
'U' => new_sort_column = Some(ProcessSortColumn::BinVHeapUnused),
'O' => new_sort_column = Some(ProcessSortColumn::OldBinVHeap),
'V' => new_sort_column = Some(ProcessSortColumn::OldBinVHeapUnused),
_ => {} // Ignore other Shift+key combinations
}
if let Some(sort_col) = new_sort_column {
if app.process_sort_column == sort_col {
app.process_sort_direction = match app.process_sort_direction {
SortDirection::Ascending => SortDirection::Descending,
SortDirection::Descending => SortDirection::Ascending,
};
} else {
app.process_sort_column = sort_col;
match sort_col {
ProcessSortColumn::Pid | ProcessSortColumn::Name => {
app.process_sort_direction = SortDirection::Ascending;
}
_ => {
// Numerical columns
app.process_sort_direction = SortDirection::Descending;
}
}
}
app.sort_and_update_process_table();
}
}
_ => {} // Ignore other keys
}
}
_ => {
// Handling for other tabs (General, ProcessGroup, etc.)
match key_event.code {
KeyCode::Esc | KeyCode::Char('q') => app.quit(),
KeyCode::Char('c') | KeyCode::Char('C')
if key_event.modifiers == KeyModifiers::CONTROL =>
{
app.quit()
}
KeyCode::Right => app.next_tab(),
KeyCode::Left => app.prev_tab(),
KeyCode::Down => {
// Get the list first
if let Some(list) = app.tab_lists.get(&app.selected_tab) {
// Then get the mutable state
if let Some(table_state) = app.table_states.get_mut(&app.selected_tab) {
let amount_items = list.len(); // Use the list directly
if amount_items == 0 {
// Handle empty list case
table_state.select(None);
} else if let Some(selected) = table_state.selected() {
if selected < amount_items - 1 {
table_state.select(Some(selected + 1));
} else {
table_state.select(Some(0)); // Wrap to top
}
} else {
// Nothing selected, select the first item
table_state.select(Some(0));
}
}
}
}
KeyCode::Up => {
if let Some(list) = app.tab_lists.get(&app.selected_tab) {
if let Some(table_state) = app.table_states.get_mut(&app.selected_tab) {
let amount_items = list.len();
if amount_items == 0 {
} else if let Some(selected) = table_state.selected() {
if selected > 0 {
table_state.select(Some(selected - 1));
} else {
table_state.select(Some(amount_items - 1));
}
} else {
table_state.select(Some(amount_items - 1));
}
}
}
}
KeyCode::Char('?') => {
app.show_help = !app.show_help;
}
_ => {}
}
}
}
Ok(())
}