blob: e9878b61bcdebc2956d571d5ca08148b90b112aa [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "ios/web/navigation/crw_navigation_item_holder.h"
#import <objc/runtime.h>
#import "ios/web/navigation/navigation_item_impl.h"
#if !defined(__has_feature) || !__has_feature(objc_arc)
#error "This file requires ARC support."
#endif
// The address of this static variable is used to set and get the associated
// NavigationItemImpl object from a WKBackForwardListItem.
const void* kNavigationItemKey = &kNavigationItemKey;
@implementation CRWNavigationItemHolder {
std::unique_ptr<web::NavigationItemImpl> _navigationItem;
}
+ (instancetype)holderForBackForwardListItem:(WKBackForwardListItem*)item {
DCHECK(item);
CRWNavigationItemHolder* holder =
objc_getAssociatedObject(item, &kNavigationItemKey);
if (!holder) {
holder = [[CRWNavigationItemHolder alloc] initWithBackForwardListItem:item];
}
return holder;
}
- (instancetype)initWithBackForwardListItem:(WKBackForwardListItem*)item {
self = [super init];
if (self) {
objc_setAssociatedObject(item, &kNavigationItemKey, self,
OBJC_ASSOCIATION_RETAIN);
}
return self;
}
- (web::NavigationItemImpl*)navigationItem {
return _navigationItem.get();
}
- (void)setNavigationItem:
(std::unique_ptr<web::NavigationItemImpl>)navigationItem {
_navigationItem = std::move(navigationItem);
}
@end