D14904: TOC: Add collapse/expand options

[Peter Wu]

Lekensteyn created this revision.
Lekensteyn added a reviewer: Okular.
Lekensteyn added a project: Okular.
Herald added a subscriber: okular-devel.
Lekensteyn requested review of this revision.

REVISION SUMMARY
  Large specifications with many (nested) sections are painful to navigate
  through when the TOC is expanded by default. Introduce four new options,
  "Expand/Collapse recursively" is based on Kate's document view while
  "Expand/Collapse all" was added to handle the top-level sections.
  
  As for other viewers, PDF.js uses shift-click to handle the former while
  using double-click on a the TOC icon to handle the latter. That is not
  very obvious, so extending the context menu seems the next best option.
  
  BUG: 216870

TEST PLAN
  Open a document such as ACPI 6.2 (Eratta A) from https://uefi.org/specifications
  Try Expand/Collapse all. Select a child and try Expand/Collapse recursively.
  F6202066: Screenshot_20180817_183839.png <https://phabricator.kde.org/F6202066>

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D14904

AFFECTED FILES
  part.cpp
  part.h
  ui/toc.cpp
  ui/toc.h

To: Lekensteyn, #okular
Cc: okular-devel, #okular, ngraham, aacid
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