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// Take a look at the license at the top of the repository in the LICENSE file.

use crate::{RenderNode, RenderNodeType};
use glib::translate::*;

glib::wrapper! {
    /// A render node that emits a debugging message when drawing its
    /// child node.
    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
    #[doc(alias = "GskDebugNode")]
    pub struct DebugNode(Shared<ffi::GskDebugNode>);

    match fn {
        ref => |ptr| ffi::gsk_render_node_ref(ptr as *mut ffi::GskRenderNode),
        unref => |ptr| ffi::gsk_render_node_unref(ptr as *mut ffi::GskRenderNode),
    }
}

define_render_node!(
    DebugNode,
    ffi::GskDebugNode,
    ffi::gsk_debug_node_get_type,
    RenderNodeType::DebugNode
);

impl DebugNode {
    /// Creates a [`RenderNode`][crate::RenderNode] that will add debug information about
    /// the given `child`.
    ///
    /// Adding this node has no visual effect.
    /// ## `child`
    /// The child to add debug info for
    /// ## `message`
    /// The debug message
    ///
    /// # Returns
    ///
    /// A new [`RenderNode`][crate::RenderNode]
    #[doc(alias = "gsk_debug_node_new")]
    pub fn new<P: AsRef<RenderNode>>(child: &P, message: &str) -> Self {
        skip_assert_initialized!();
        unsafe {
            from_glib_full(ffi::gsk_debug_node_new(
                child.as_ref().to_glib_none().0,
                message.to_glib_full(),
            ))
        }
    }

    /// Gets the child node that is getting drawn by the given `self`.
    ///
    /// # Returns
    ///
    /// the child [`RenderNode`][crate::RenderNode]
    #[doc(alias = "gsk_debug_node_get_child")]
    #[doc(alias = "get_child")]
    pub fn child(&self) -> Option<RenderNode> {
        unsafe { from_glib_none(ffi::gsk_debug_node_get_child(self.to_glib_none().0)) }
    }

    /// Gets the debug message that was set on this node
    ///
    /// # Returns
    ///
    /// The debug message
    #[doc(alias = "gsk_debug_node_get_message")]
    #[doc(alias = "get_message")]
    pub fn message(&self) -> Option<glib::GString> {
        unsafe { from_glib_none(ffi::gsk_debug_node_get_message(self.to_glib_none().0)) }
    }
}