use std::{cell::RefCell, ops::Range, rc::Rc}; use pathfinder_geometry::rect::RectF; use crate::{platform::InputHandler, window::WindowContext, AnyView, AnyWindowHandle, AppContext}; pub struct WindowInputHandler { pub app: Rc<RefCell<AppContext>>, pub window: AnyWindowHandle,} impl WindowInputHandler { fn read_focused_view<T, F>(&self, f: F) -> Option<T> where F: FnOnce(&dyn AnyView, &WindowContext) -> T, { // Input-related application hooks are sometimes called by the OS during // a call to a window-manipulation API, like prompting the user for file // paths. In that case, the AppContext will already be borrowed, so any // InputHandler methods need to fail gracefully. // // See https://github.com/zed-industries/community/issues/444 let mut app = self.app.try_borrow_mut().ok()?; self.window.update_optional(&mut *app, |cx| { let view_id = cx.window.focused_view_id?; let view = cx.views.get(&(self.window, view_id))?; let result = f(view.as_ref(), &cx); Some(result) }) } fn update_focused_view<T, F>(&mut self, f: F) -> Option<T> where F: FnOnce(&mut dyn AnyView, &mut WindowContext, usize) -> T, { let mut app = self.app.try_borrow_mut().ok()?; self.window .update(&mut *app, |cx| { let view_id = cx.window.focused_view_id?; cx.update_any_view(view_id, |view, cx| f(view, cx, view_id)) }) .flatten() }} impl InputHandler for WindowInputHandler { fn text_for_range(&self, range: Range<usize>) -> Option<String> { self.read_focused_view(|view, cx| view.text_for_range(range.clone(), cx)) .flatten() } fn selected_text_range(&self) -> Option<Range<usize>> { self.read_focused_view(|view, cx| view.selected_text_range(cx)) .flatten() } fn replace_text_in_range(&mut self, range: Option<Range<usize>>, text: &str) { self.update_focused_view(|view, cx, view_id| { view.replace_text_in_range(range, text, cx, view_id); }); } fn marked_text_range(&self) -> Option<Range<usize>> { self.read_focused_view(|view, cx| view.marked_text_range(cx)) .flatten() } fn unmark_text(&mut self) { self.update_focused_view(|view, cx, view_id| { view.unmark_text(cx, view_id); }); } fn replace_and_mark_text_in_range( &mut self, range: Option<Range<usize>>, new_text: &str, new_selected_range: Option<Range<usize>>, ) { self.update_focused_view(|view, cx, view_id| { view.replace_and_mark_text_in_range(range, new_text, new_selected_range, cx, view_id); }); } fn rect_for_range(&self, range_utf16: Range<usize>) -> Option<RectF> { self.window.read_optional_with(&*self.app.borrow(), |cx| { cx.rect_for_text_range(range_utf16) }) }}
use std::{cell::RefCell, ops::Range, rc::Rc};
use pathfinder_geometry::rect::RectF;
use crate::{platform::InputHandler, window::WindowContext, AnyView, AnyWindowHandle, AppContext};
pub struct WindowInputHandler {
pub app: Rc<RefCell<AppContext>>,
pub window: AnyWindowHandle,
}
impl WindowInputHandler {
fn read_focused_view<T, F>(&self, f: F) -> Option<T>
where
F: FnOnce(&dyn AnyView, &WindowContext) -> T,
{
// Input-related application hooks are sometimes called by the OS during
// a call to a window-manipulation API, like prompting the user for file
// paths. In that case, the AppContext will already be borrowed, so any
// InputHandler methods need to fail gracefully.
//
// See https://github.com/zed-industries/community/issues/444
let mut app = self.app.try_borrow_mut().ok()?;
self.window.update_optional(&mut *app, |cx| {
let view_id = cx.window.focused_view_id?;
let view = cx.views.get(&(self.window, view_id))?;
let result = f(view.as_ref(), &cx);
Some(result)
})
}
fn update_focused_view<T, F>(&mut self, f: F) -> Option<T>
where
F: FnOnce(&mut dyn AnyView, &mut WindowContext, usize) -> T,
{
let mut app = self.app.try_borrow_mut().ok()?;
self.window
.update(&mut *app, |cx| {
let view_id = cx.window.focused_view_id?;
cx.update_any_view(view_id, |view, cx| f(view, cx, view_id))
})
.flatten()
}
}
impl InputHandler for WindowInputHandler {
fn text_for_range(&self, range: Range<usize>) -> Option<String> {
self.read_focused_view(|view, cx| view.text_for_range(range.clone(), cx))
.flatten()
}
fn selected_text_range(&self) -> Option<Range<usize>> {
self.read_focused_view(|view, cx| view.selected_text_range(cx))
.flatten()
}
fn replace_text_in_range(&mut self, range: Option<Range<usize>>, text: &str) {
self.update_focused_view(|view, cx, view_id| {
view.replace_text_in_range(range, text, cx, view_id);
});
}
fn marked_text_range(&self) -> Option<Range<usize>> {
self.read_focused_view(|view, cx| view.marked_text_range(cx))
.flatten()
}
fn unmark_text(&mut self) {
self.update_focused_view(|view, cx, view_id| {
view.unmark_text(cx, view_id);
});
}
fn replace_and_mark_text_in_range(
&mut self,
range: Option<Range<usize>>,
new_text: &str,
new_selected_range: Option<Range<usize>>,
) {
self.update_focused_view(|view, cx, view_id| {
view.replace_and_mark_text_in_range(range, new_text, new_selected_range, cx, view_id);
});
}
fn rect_for_range(&self, range_utf16: Range<usize>) -> Option<RectF> {
self.window.read_optional_with(&*self.app.borrow(), |cx| {
cx.rect_for_text_range(range_utf16)
})
}
}