File: snap_event.h

package info (click to toggle)
chromium 138.0.7204.183-1
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 6,071,908 kB
  • sloc: cpp: 34,937,088; ansic: 7,176,967; javascript: 4,110,704; python: 1,419,953; asm: 946,768; xml: 739,971; pascal: 187,324; sh: 89,623; perl: 88,663; objc: 79,944; sql: 50,304; cs: 41,786; fortran: 24,137; makefile: 21,806; php: 13,980; tcl: 13,166; yacc: 8,925; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (57 lines) | stat: -rw-r--r-- 2,220 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
// Copyright 2023 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.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SNAP_EVENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SNAP_EVENT_H_

#include "third_party/blink/renderer/core/dom/events/event.h"
#include "third_party/blink/renderer/core/dom/node.h"
#include "third_party/blink/renderer/core/dom/static_node_list.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"

namespace blink {

class SnapEventInit;

// This class implements the SnapEvent interface for scroll-snap-related
// JavaScript events, scrollsnapchange and scrollsnapchanging.
// SnapEvents are sent to a scroller when it snaps to a different element from
// the element to which it was previously snapped along either axis.
// https://drafts.csswg.org/css-scroll-snap-2/#scrollsnapchange-and-scrollsnapchanging
class SnapEvent : public Event {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static SnapEvent* Create(const AtomicString& type,
                           SnapEventInit const* initializer);
  static SnapEvent* Create(const AtomicString& type,
                           Bubbles bubbles,
                           Member<Node> block_target,
                           Member<Node> inline_target);
  SnapEvent(const AtomicString& type,
            Bubbles bubbles,
            Member<Node> block_target,
            Member<Node> inline_target);

  Node* snapTargetBlock() { return snap_target_block_.Get(); }
  Node* snapTargetInline() { return snap_target_inline_.Get(); }

  void Trace(Visitor* visitor) const override {
    visitor->Trace(snap_target_block_);
    visitor->Trace(snap_target_inline_);
    Event::Trace(visitor);
  }

 private:
  // This are the elements that the scrolling container selected as snap targets
  // for the related snap event.
  Member<Node> snap_target_block_;
  Member<Node> snap_target_inline_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_SCROLL_SNAP_EVENT_H_