1 files changed, 57 insertions, 0 deletions
diff --git a/chromium/ui/views/controls/link_fragment.h b/chromium/ui/views/controls/link_fragment.h
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index 00000000000..20a7b87d534
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+++ b/chromium/ui/views/controls/link_fragment.h
@@ -0,0 +1,57 @@
+// Copyright 2022 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 UI_VIEWS_CONTROLS_LINK_FRAGMENT_H_
+#define UI_VIEWS_CONTROLS_LINK_FRAGMENT_H_
+
+#include "base/memory/raw_ptr.h"
+#include "ui/views/controls/link.h"
+#include "ui/views/metadata/view_factory.h"
+#include "ui/views/style/typography.h"
+
+namespace views {
+
+// A `LinkFragment` can be used to represent a logical link that spans across
+// multiple lines. Connected `LinkFragment`s adjust their style if any single
+// one of them is hovered over of focused.
+class VIEWS_EXPORT LinkFragment : public Link {
+ public:
+  METADATA_HEADER(LinkFragment);
+
+  explicit LinkFragment(const std::u16string& title = std::u16string(),
+                        int text_context = style::CONTEXT_LABEL,
+                        int text_style = style::STYLE_LINK,
+                        LinkFragment* other_fragment = nullptr);
+  ~LinkFragment() override;
+
+  LinkFragment(const LinkFragment&) = delete;
+  LinkFragment& operator=(const LinkFragment&) = delete;
+
+ private:
+  // Returns whether this fragment indicates that the entire link represented
+  // by it should be underlined.
+  bool IsUnderlined() const;
+
+  // Connects `this` to the `other_fragment`.
+  void Connect(LinkFragment* other_fragment);
+
+  // Disconnects `this` from any other fragments that it may be connected to.
+  void Disconnect();
+
+  // Recalculates the font style for this link fragment and, if it is changed,
+  // updates both this fragment and all other that are connected to it.
+  void RecalculateFont() override;
+
+  // Pointers to the previous and the next `LinkFragment` if the logical link
+  // represented by `this` consists of multiple such fragments (e.g. due to
+  // line breaks).
+  // If the logical link is just a single `LinkFragment` component, then these
+  // pointers point to `this`.
+  raw_ptr<LinkFragment> prev_fragment_;
+  raw_ptr<LinkFragment> next_fragment_;
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_CONTROLS_LINK_FRAGMENT_H_