diff options
Diffstat (limited to 'libui')
| -rw-r--r-- | libui/libui.ha | 17 | ||||
| -rw-r--r-- | libui/list/list.ha | 31 |
2 files changed, 43 insertions, 5 deletions
diff --git a/libui/libui.ha b/libui/libui.ha index 0546d24..6ad33d1 100644 --- a/libui/libui.ha +++ b/libui/libui.ha @@ -17,6 +17,7 @@ export type ttyui = struct { listeners: []listener, }; +// Initializes the UI and returns a ttyui. export fn init() ttyui = { let f = match (tty::open()) { case let f: io::file => @@ -43,28 +44,36 @@ export fn init() ttyui = { }; }; +// Returns the window size for the given ttyui. export fn getwinsize(ui: ttyui) (tty::ttysize | tty::error) = { return tty::winsize(ui.f); }; +// Suspend the UI. To restore it, use [[resume]]. export fn suspend(ui: *ttyui) void = { tty::termios_restore(&ui.term); }; +// Resumes the UI after a [[suspend]]. export fn resume(ui: *ttyui) void = { tty::makeraw(&ui.term)!; + tty::noecho(&ui.term)!; }; +// Restores the UI state and closes and frees the resources associated with the +// given ttyui. export fn finish(ui: *ttyui) void = { tty::termios_restore(&ui.term); io::close(ui.f)!; free(ui.listeners); }; +// Scans a rune. A convenience function for [[bufio::scanrune]]. export fn scan(ui: ttyui) (rune | utf8::invalid | io::EOF | io::error) = { return bufio::scanrune(ui.f); }; +// Notify (call) the ttyui's listeners with the ttyui and r as a parameter. export fn notify(ui: *ttyui, r: rune) bool = { for (let i = 0z; i < len(ui.listeners); i += 1) { if (ui.listeners[i](ui, r)) { @@ -94,17 +103,17 @@ fn loop(ui: *ttyui) void = { }; }; +// Add a listener to the given ttyui. export fn addlistener(ui: *ttyui, l: listener) void = { append(ui.listeners, l); }; - +// Print a string or rune to the ttyui. export fn print(ui: ttyui, arg: (str | rune)) void = { - fmt::fprintf(ui.f, "{}\r\n", arg)!; + fmt::fprintf(ui.f, "{}\r", arg)!; }; +// Clear the ttyui. export fn clear(ui: ttyui) void = { fmt::fprintf(ui.f, "\x1B[2J\x1B[1;1H\r")!; }; - -//export @symbol("wcwidth") fn wcwidth(r: rune) int; diff --git a/libui/list/list.ha b/libui/list/list.ha index 6cbafd7..16e2ecc 100644 --- a/libui/list/list.ha +++ b/libui/list/list.ha @@ -29,6 +29,7 @@ export type ttysize = struct { export type listener = *fn(l: *listwidget, r: rune) bool; +// Create a new list with the given items. export fn newlist(ui: libui::ttyui, items: str...) listwidget = { let sz = libui::getwinsize(ui)!; let rows: (u16 | size) = if (sz.rows - 2 < len(items)) { @@ -53,10 +54,13 @@ export fn newlist(ui: libui::ttyui, items: str...) listwidget = { return w; }; +// Add a listener to the given list. export fn addlistener(list: *listwidget, l: listener) void = { append(list.listeners, l); }; +// Print the list's items while truncating the items to not be wider than the +// list.sz.cols. export fn print(list: *listwidget) (void | io::error | tty::error) = { //let sz = libui::getwinsize(list.ui)?; //let rows: (u16 | size) = if (sz.rows - 2 < len(list.items)) { @@ -90,6 +94,8 @@ export fn print(list: *listwidget) (void | io::error | tty::error) = { libui::print(list.ui, s); }; +// Notify (call) the listwidget's listeners with the listwidget and r as a +// parameter. export fn notify(l: *listwidget, r: rune) bool = { for (let i = 0z; i < len(l.listeners); i += 1) { if (l.listeners[i](l, r)) { @@ -99,6 +105,7 @@ export fn notify(l: *listwidget, r: rune) bool = { return false; }; +// Move the list's cursor down one item. Returns the new cursor. export fn down(l: *listwidget) size = { if (l.cursor < len(l.items) - 1) { l.cursor += 1; @@ -107,6 +114,7 @@ export fn down(l: *listwidget) size = { return l.cursor; }; +// Move the list's cursor up one item. Returns the new cursor. export fn up(l: *listwidget) size = { if (l.cursor > 0) { l.cursor -= 1; @@ -115,6 +123,8 @@ export fn up(l: *listwidget) size = { return l.cursor; }; +// Reset the list's frame based on the cursor. Returns whether the frame was +// updated. fn reframe(l: *listwidget) bool = { let reframed: bool = false; if (l.cursor < l.frame.start) { @@ -130,6 +140,7 @@ fn reframe(l: *listwidget) bool = { return reframed; }; +// Move the list's cursor to the top (first item). Returns the new cursor. export fn top(l: *listwidget) size = { l.cursor = 0; l.frame.start = 0; @@ -137,6 +148,7 @@ export fn top(l: *listwidget) size = { return l.cursor; }; +// Move the list's cursor to the bottom (last item). Returns the new cursor. export fn bottom(l: *listwidget) size = { l.cursor = len(l.items) - 1; l.frame.end = len(l.items): u16; @@ -144,11 +156,28 @@ export fn bottom(l: *listwidget) size = { return l.cursor; }; +// Forward search through the list's items for an item containing s. Returns the +// new cursor. export fn search(l: *listwidget, s: str) size = { - for (let i = 0z; i < len(l.items); i += 1) { + for (let i = l.cursor + 1; i < len(l.items); i += 1) { if (strings::contains(l.items[i], s)) { l.cursor = i; reframe(l); + return l.cursor; + }; + }; + return l.cursor; +}; + +// Backwards search through the list's items for an item containing s. Returns +// the new cursor. +export fn rsearch(l: *listwidget, s: str) size = { + // size wraps to max value for size when < 0 + for (let i = l.cursor: int - 1; i >= 0; i -= 1) { + if (strings::contains(l.items[i], s)) { + l.cursor = i: size; + reframe(l); + return l.cursor; }; }; return l.cursor; |