tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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WBRFrame.cpp (2537B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 /* rendering object for HTML <wbr> elements */
      8 
      9 #include "mozilla/PresShell.h"
     10 #include "nsHTMLParts.h"
     11 #include "nsIFrame.h"
     12 
     13 using namespace mozilla;
     14 
     15 namespace mozilla {
     16 
     17 class WBRFrame final : public nsIFrame {
     18 public:
     19  NS_DECL_FRAMEARENA_HELPERS(WBRFrame)
     20 
     21  friend nsIFrame* ::NS_NewWBRFrame(mozilla::PresShell* aPresShell,
     22                                    ComputedStyle* aStyle);
     23 
     24  virtual FrameSearchResult PeekOffsetNoAmount(bool aForward,
     25                                               int32_t* aOffset) override;
     26  virtual FrameSearchResult PeekOffsetCharacter(
     27      bool aForward, int32_t* aOffset,
     28      PeekOffsetCharacterOptions aOptions =
     29          PeekOffsetCharacterOptions()) override;
     30  virtual FrameSearchResult PeekOffsetWord(
     31      bool aForward, bool aWordSelectEatSpace, bool aIsKeyboardSelect,
     32      int32_t* aOffset, PeekWordState* aState, bool aTrimSpaces) override;
     33 
     34 protected:
     35  explicit WBRFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
     36      : nsIFrame(aStyle, aPresContext, kClassID) {}
     37 };
     38 
     39 }  // namespace mozilla
     40 
     41 nsIFrame* NS_NewWBRFrame(mozilla::PresShell* aPresShell,
     42                         ComputedStyle* aStyle) {
     43  return new (aPresShell) WBRFrame(aStyle, aPresShell->GetPresContext());
     44 }
     45 
     46 NS_IMPL_FRAMEARENA_HELPERS(WBRFrame)
     47 
     48 nsIFrame::FrameSearchResult WBRFrame::PeekOffsetNoAmount(bool aForward,
     49                                                         int32_t* aOffset) {
     50  NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range");
     51  // WBR frames can not contain text or non-rendered whitespace
     52  return CONTINUE;
     53 }
     54 
     55 nsIFrame::FrameSearchResult WBRFrame::PeekOffsetCharacter(
     56    bool aForward, int32_t* aOffset, PeekOffsetCharacterOptions aOptions) {
     57  NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range");
     58  // WBR frames can not contain characters
     59  return CONTINUE;
     60 }
     61 
     62 nsIFrame::FrameSearchResult WBRFrame::PeekOffsetWord(
     63    bool aForward, bool aWordSelectEatSpace, bool aIsKeyboardSelect,
     64    int32_t* aOffset, PeekWordState* aState, bool aTrimSpaces) {
     65  NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range");
     66  // WBR frames can never contain text so we'll never find a word inside them
     67  return CONTINUE;
     68 }