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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)Modal` -> `WindowModal`.
#[derive(Clone)]
enum RawDlg {
Raw(RawModal),
Dlg(DlgModal),
}
/// An user modal window, which can handle events. Can be programmatically
/// created or load a dialog resource from a `.res` file.
#[derive(Clone)]
pub struct WindowModal(RawDlg);
unsafe impl Send for WindowModal {}
impl AsRef<BaseWnd> for WindowModal {
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 WindowModal {
fn hwnd(&self) -> &HWND {
self.as_ref().hwnd()
}
fn as_any(&self) -> &dyn Any {
self
}
}
impl GuiParent for WindowModal {}
impl WindowModal {
/// Instantiates a new `WindowModal` object, to be created internally with
/// [`HWND::CreateWindowEx`](crate::HWND::CreateWindowEx).
#[must_use]
pub fn new(opts: WindowModalOpts) -> Self {
Self(RawDlg::Raw(RawModal::new(opts)))
}
/// Instantiates a new `WindowModal` object, to be loaded from a dialog
/// resource with
/// [`HINSTANCE::DialogBoxParam`](crate::HINSTANCE::DialogBoxParam).
#[must_use]
pub fn new_dlg(dlg_id: u16) -> Self {
Self(RawDlg::Dlg(DlgModal::new(dlg_id)))
}
/// Physically creates the window, then runs the modal loop. This method
/// will block until the window is closed.
///
/// Note that, if the user clicks the "X" to close the modal, the default
/// behavior is to call `EndDialog(0)`. To override this behavior, handle
/// the modal's [`wm_close`](crate::prelude::GuiEventsWindow::wm_close)
/// yourself.
///
/// # Panics
///
/// Panics if the window is already created.
///
/// Panics if the creation process fails.
pub fn show_modal(&self, parent: &impl GuiParent) -> AnyResult<()> {
match &self.0 {
RawDlg::Raw(r) => r.show_modal(parent),
RawDlg::Dlg(d) => Ok(d.show_modal(parent)),
}
}
/// 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 {}).unwrap();
}
}
}