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use std::any::Any;
use crate::decl::*;
use crate::gui::{privs::*, *};
use crate::msg::*;
use crate::prelude::*;
/// Switches between raw and dialog implementations.
///
/// Hierarchy: `BaseWnd` -> `(Raw|Dlg)Base` -> `(Raw|Dlg)Modeless` -> `WindowModeless`.
#[derive(Clone)]
enum RawDlg {
Raw(RawModeless),
Dlg(DlgModeless),
}
/// An user modeless window, which can handle events. Can be programmatically
/// created or load a dialog resource from a `.res` file.
#[derive(Clone)]
pub struct WindowModeless(RawDlg);
unsafe impl Send for WindowModeless {}
impl AsRef<BaseWnd> for WindowModeless {
fn as_ref(&self) -> &BaseWnd {
match &self.0 {
RawDlg::Raw(r) => r.raw_base().base(),
RawDlg::Dlg(d) => d.dlg_base().base(),
}
}
}
impl GuiWindow for WindowModeless {
fn hwnd(&self) -> &HWND {
self.as_ref().hwnd()
}
fn as_any(&self) -> &dyn Any {
self
}
}
impl GuiParent for WindowModeless {}
impl WindowModeless {
/// Instantiates a new `WindowModeless` object, to be created internally
/// with [`HWND::CreateWindowEx`](crate::HWND::CreateWindowEx).
///
/// # Panics
///
/// Panics if the parent window was already created – that is, you cannot
/// dynamically create a `WindowModeless` in an event closure.
#[must_use]
pub fn new(parent: &(impl GuiParent + 'static), opts: WindowModelessOpts) -> Self {
if *parent.hwnd() != HWND::NULL {
panic!("Cannot create a modeless window after the parent window is created.");
}
Self(RawDlg::Raw(RawModeless::new(parent, opts)))
}
/// Instantiates a new `WindowModeless` object, to be loaded from a dialog
/// resource with
/// [`HINSTANCE::CreateDialogParam`](crate::HINSTANCE::CreateDialogParam).
///
/// # Panics
///
/// Panics if the parent dialog was already created – that is, you cannot
/// dynamically create a `WindowModeless` in an event closure.
///
/// Panics if the creation process fails.
#[must_use]
pub fn new_dlg(parent: &(impl GuiParent + 'static), dlg_id: u16, position: (i32, i32)) -> Self {
if *parent.hwnd() != HWND::NULL {
panic!("Cannot create a modeless window after the parent window is created.");
}
Self(RawDlg::Dlg(DlgModeless::new(parent, dlg_id, position)))
}
/// Exposes methods to handle window messages.
///
/// # Panics
///
/// Panics if the window is already created. Events must be set before
/// window creation.
#[must_use]
pub fn on(&self) -> &impl GuiEventsParent {
self.as_ref().on()
}
/// Closes the window by posting a [`WM_CLOSE`](crate::msg::wm::Close)
/// message. This is the safest way to close any popup window, because
/// you'll able to process the
/// [`wm_close`](crate::prelude::GuiEventsWindow::wm_close) event, just like
/// if the user clicked the window "X" button.
pub fn close(&self) {
unsafe {
self.hwnd().PostMessage(wm::Close {}).ok(); // ignore errors
}
}
}