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use std::marker::PhantomData; use std::ptr; use sys; use super::{ImStr, Ui}; #[must_use] pub struct Menu<'ui, 'p> { label: &'p ImStr, enabled: bool, _phantom: PhantomData<&'ui Ui<'ui>>, } impl<'ui, 'p> Menu<'ui, 'p> { pub fn new(_: &Ui<'ui>, label: &'p ImStr) -> Self { Menu { label, enabled: true, _phantom: PhantomData, } } #[inline] pub fn enabled(mut self, enabled: bool) -> Self { self.enabled = enabled; self } pub fn build<F: FnOnce()>(self, f: F) { let render = unsafe { sys::igBeginMenu(self.label.as_ptr(), self.enabled) }; if render { f(); unsafe { sys::igEndMenu() }; } } } #[must_use] pub struct MenuItem<'ui, 'p> { label: &'p ImStr, shortcut: Option<&'p ImStr>, selected: Option<&'p mut bool>, enabled: bool, _phantom: PhantomData<&'ui Ui<'ui>>, } impl<'ui, 'p> MenuItem<'ui, 'p> { pub fn new(_: &Ui<'ui>, label: &'p ImStr) -> Self { MenuItem { label, shortcut: None, selected: None, enabled: true, _phantom: PhantomData, } } #[inline] pub fn shortcut(mut self, shortcut: &'p ImStr) -> Self { self.shortcut = Some(shortcut); self } #[inline] pub fn selected(mut self, selected: &'p mut bool) -> Self { self.selected = Some(selected); self } #[inline] pub fn enabled(mut self, enabled: bool) -> Self { self.enabled = enabled; self } pub fn build(self) -> bool { let label = self.label.as_ptr(); let shortcut = self.shortcut.map(|x| x.as_ptr()).unwrap_or(ptr::null()); let selected = self .selected .map(|x| x as *mut bool) .unwrap_or(ptr::null_mut()); let enabled = self.enabled; unsafe { sys::igMenuItemBoolPtr(label, shortcut, selected, enabled) } } }