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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#![allow(unsafe_code)]
use gfx::display_list::OpaqueNode;
use libc::{c_void, uintptr_t};
use script::dom::bindings::js::LayoutJS;
use script::dom::node::Node;
use script::layout_interface::{TrustedNodeAddress};
use script_traits::UntrustedNodeAddress;
pub trait OpaqueNodeMethods {
/// Converts a DOM node (script view) to an `OpaqueNode`.
fn from_script_node(node: TrustedNodeAddress) -> Self;
/// Converts a DOM node to an `OpaqueNode'.
fn from_jsmanaged(node: &LayoutJS<Node>) -> Self;
/// Converts this node to an `UntrustedNodeAddress`. An `UntrustedNodeAddress` is just the type
/// of node that script expects to receive in a hit test.
fn to_untrusted_node_address(&self) -> UntrustedNodeAddress;
}
impl OpaqueNodeMethods for OpaqueNode {
fn from_script_node(node: TrustedNodeAddress) -> OpaqueNode {
unsafe {
OpaqueNodeMethods::from_jsmanaged(&LayoutJS::from_trusted_node_address(node))
}
}
fn from_jsmanaged(node: &LayoutJS<Node>) -> OpaqueNode {
unsafe {
let ptr: uintptr_t = node.get_jsobject() as uintptr_t;
OpaqueNode(ptr)
}
}
fn to_untrusted_node_address(&self) -> UntrustedNodeAddress {
let OpaqueNode(addr) = *self;
UntrustedNodeAddress(addr as *const c_void)
}
}
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