started work on page up/down

pull/3/head
Jan Hrastnik 4 years ago
parent 7ccc4993f4
commit 1035b2aea1

@ -127,12 +127,29 @@ pub fn move_file_start(view: &mut View, _count: usize) {
pub fn move_file_end(view: &mut View, _count: usize) {
// TODO: use a transaction
let text = &view.state.doc;
let last_line = text.line_to_char(text.len_lines().checked_sub(1).unwrap());
let last_line = text.line_to_char(text.len_lines().checked_sub(2).unwrap());
view.state.selection = Selection::single(last_line, last_line);
view.state.mode = Mode::Normal;
}
pub fn page_up(view: &mut View, _count: usize) {
view.first_line = view.first_line.saturating_sub(view.size.1);
view.state.selection = Selection::single(view.first_line as usize, view.first_line as usize);
}
pub fn page_down(view: &mut View, _count: usize) {
view.first_line += view.size.1;
view.state.selection = Selection::single(view.first_line as usize, view.first_line as usize);
}
pub fn half_page_up(view: &mut View, _count: usize) {
view.first_line = view.first_line.saturating_sub(view.size.1 / 2);
}
pub fn half_page_down(view: &mut View, _count: usize) {
view.first_line += view.size.1 / 2;
}
// avoid select by default by having a visual mode switch that makes movements into selects
pub fn extend_char_left(view: &mut View, count: usize) {

@ -140,6 +140,16 @@ pub fn default() -> Keymaps {
code: KeyCode::Esc,
modifiers: Modifiers::NONE
}] => commands::normal_mode,
vec![Key {
code: KeyCode::PageUp,
modifiers: Modifiers::NONE
}] => commands::page_up,
vec![Key {
code: KeyCode::PageDown,
modifiers: Modifiers::NONE
}] => commands::page_down,
vec![shift!('u')] => commands::half_page_up,
vec![shift!('d')] => commands::half_page_down,
),
state::Mode::Insert => hashmap!(
vec![Key {

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