2615a11f7c
I'd like to avoid cluttering the top-level namespace with all the platform- specific types.
98 lines
3.3 KiB
Rust
98 lines
3.3 KiB
Rust
use std::{cell::RefCell, ops::Range, rc::Rc};
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use pathfinder_geometry::rect::RectF;
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use crate::{platform::InputHandler, AnyView, AppContext};
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pub struct WindowInputHandler {
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pub app: Rc<RefCell<AppContext>>,
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pub window_id: usize,
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}
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impl WindowInputHandler {
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fn read_focused_view<T, F>(&self, f: F) -> Option<T>
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where
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F: FnOnce(&dyn AnyView, &AppContext) -> T,
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{
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// Input-related application hooks are sometimes called by the OS during
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// a call to a window-manipulation API, like prompting the user for file
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// paths. In that case, the AppContext will already be borrowed, so any
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// InputHandler methods need to fail gracefully.
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//
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// See https://github.com/zed-industries/community/issues/444
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let app = self.app.try_borrow().ok()?;
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let view_id = app.focused_view_id(self.window_id)?;
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let view = app.views.get(&(self.window_id, view_id))?;
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let result = f(view.as_ref(), &app);
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Some(result)
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}
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fn update_focused_view<T, F>(&mut self, f: F) -> Option<T>
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where
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F: FnOnce(usize, usize, &mut dyn AnyView, &mut AppContext) -> T,
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{
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let mut app = self.app.try_borrow_mut().ok()?;
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app.update(|app| {
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let view_id = app.focused_view_id(self.window_id)?;
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let mut view = app.views.remove(&(self.window_id, view_id))?;
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let result = f(self.window_id, view_id, view.as_mut(), &mut *app);
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app.views.insert((self.window_id, view_id), view);
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Some(result)
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})
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}
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}
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impl InputHandler for WindowInputHandler {
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fn text_for_range(&self, range: Range<usize>) -> Option<String> {
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self.read_focused_view(|view, cx| view.text_for_range(range.clone(), cx))
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.flatten()
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}
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fn selected_text_range(&self) -> Option<Range<usize>> {
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self.read_focused_view(|view, cx| view.selected_text_range(cx))
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.flatten()
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}
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fn replace_text_in_range(&mut self, range: Option<Range<usize>>, text: &str) {
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self.update_focused_view(|window_id, view_id, view, cx| {
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view.replace_text_in_range(range, text, cx, window_id, view_id);
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});
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}
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fn marked_text_range(&self) -> Option<Range<usize>> {
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self.read_focused_view(|view, cx| view.marked_text_range(cx))
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.flatten()
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}
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fn unmark_text(&mut self) {
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self.update_focused_view(|window_id, view_id, view, cx| {
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view.unmark_text(cx, window_id, view_id);
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});
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}
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fn replace_and_mark_text_in_range(
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&mut self,
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range: Option<Range<usize>>,
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new_text: &str,
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new_selected_range: Option<Range<usize>>,
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) {
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self.update_focused_view(|window_id, view_id, view, cx| {
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view.replace_and_mark_text_in_range(
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range,
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new_text,
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new_selected_range,
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cx,
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window_id,
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view_id,
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);
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});
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}
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fn rect_for_range(&self, range_utf16: Range<usize>) -> Option<RectF> {
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let app = self.app.borrow();
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let (presenter, _) = app.presenters_and_platform_windows.get(&self.window_id)?;
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let presenter = presenter.borrow();
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presenter.rect_for_text_range(range_utf16, &app)
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}
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}
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