ZacharyZhang-NY
b7fca0146d
ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git), ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.
93 lines
3.0 KiB
Rust
93 lines
3.0 KiB
Rust
//! AppKit's Command edit keys; off-screen Blink never gets them.
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use cef::*;
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const SHIFT: u32 = 1 << 1;
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const CONTROL: u32 = 1 << 2;
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const ALT: u32 = 1 << 3;
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const COMMAND: u32 = 1 << 7;
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/// What AppKit's standard bindings do, as page script.
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pub(crate) fn script(windows_key: i32, modifiers: u32) -> Option<String> {
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if modifiers & COMMAND == 0 || modifiers & (CONTROL | ALT) != 0 {
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return None;
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}
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let alter = if modifiers & SHIFT != 0 {
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"extend"
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} else {
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"move"
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};
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let (direction, unit) = match windows_key {
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0x25 => ("backward", "lineboundary"),
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0x27 => ("forward", "lineboundary"),
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0x26 => ("backward", "documentboundary"),
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0x28 => ("forward", "documentboundary"),
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// Delete to the line's start or end.
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0x08 | 0x2E if modifiers & SHIFT == 0 => {
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let (direction, command) = match windows_key {
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0x08 => ("backward", "delete"),
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_ => ("forward", "forwardDelete"),
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};
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return Some(format!(
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"{{const s=getSelection();if(s.isCollapsed)s.modify('extend','{direction}','lineboundary');document.execCommand('{command}')}}"
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));
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}
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_ => return None,
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};
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Some(format!(
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"{{const s=getSelection();s.modify('{alter}','{direction}','{unit}');s.focusNode?.parentElement?.scrollIntoView({{block:'nearest'}})}}"
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))
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}
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wrap_keyboard_handler! {
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pub(crate) struct Keys;
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impl KeyboardHandler {
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fn on_key_event(
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&self,
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browser: Option<&mut Browser>,
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event: Option<&KeyEvent>,
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_os_event: *mut u8,
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) -> ::std::os::raw::c_int {
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let (Some(browser), Some(event)) = (browser, event) else { return 0 };
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let down = matches!(event.type_, KeyEventType::RAWKEYDOWN | KeyEventType::KEYDOWN);
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if !down || event.focus_on_editable_field == 0 {
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return 0;
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}
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let Some(script) = script(event.windows_key_code, event.modifiers) else { return 0 };
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let Some(frame) = browser.focused_frame() else { return 0 };
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log::debug!("web: AppKit edit key {}", event.windows_key_code);
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frame.execute_java_script(Some(&CefString::from(script.as_str())), None, 0);
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1
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn command_keys_only() {
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assert!(
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script(0x28, COMMAND)
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.unwrap()
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.contains("'move','forward','documentboundary'")
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);
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assert!(
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script(0x25, COMMAND | SHIFT)
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.unwrap()
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.contains("'extend','backward','lineboundary'")
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);
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assert!(
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script(0x08, COMMAND)
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.unwrap()
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.contains("execCommand('delete')")
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);
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assert!(script(0x2E, COMMAND).unwrap().contains("forwardDelete"));
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assert_eq!(script(0x28, 0), None);
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assert_eq!(script(0x28, COMMAND | ALT), None);
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assert_eq!(script(0x41, COMMAND), None);
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}
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}
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