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a4e4e312aa
* Allow unlimited multi-level navigation This PR supersedes #462. The only user-level difference from #462 is that disambiguation of parent pages has to use either `grand_parent` or `ancestor` titles: the somewhat unnatural `section_id` and `in_section` fields are not supported. The implementation has been significantly simplified by the changes introduced in v0.7.0 of the theme. * Detect cyclic parenthood A page should not have a parent or ancestor with the same title. If it does, the location of the repeated link is marked by ∞, to facilitate debugging the navigation (and an unbounded loop leading to a build exception is avoided). * Add nav_error_report warning in main navigation When activated by `nav_error_report: true` in `_config.yml`, displays warnings about pages with the same title as their parent page or an ancestral page. * Cache site-nav with links to all pages The extra cached site-nav is used for determining breadcrumbs and children navigation, which may involve pages that are excluded from the main navigation. * Replace code for determining children by inclusion of components/nav/children.html * Update CHANGELOG.md --------- Co-authored-by: Matt Wang <matt@matthewwang.me>
54 lines
2.2 KiB
HTML
54 lines
2.2 KiB
HTML
{%- comment -%}
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Include as: {%- include components/nav/links.html pages=page_array ancestors=title_array all=bool -%}
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Depends on: include.pages, include.ancestors, include.all.
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Results in: HTML for the main navigation when all is nil or false;
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includes links to pages excluded from the main navigation when all is true.
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Includes: components/nav/sorted.html, components/nav/children.html, components/nav/links.html.
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Overwrites:
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node, nav_children, nav_ancestors.
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{%- endcomment -%}
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<ul class="nav-list">
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{%- for node in include.pages -%}
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{%- if include.all == true or node.nav_exclude != true -%}
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{%- if include.ancestors contains node.title -%}
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<li class="nav-list-item">
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<a href="{{ node.url | relative_url }}" class="nav-list-link"> ∞ </a>
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</li>
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{%- capture nav_error_report -%}
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<blockquote class="warning">
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A page has the same title as its parent page or one of its ancestral pages!<br>
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This causes an incorrect link in the main navigation panel.<br>
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Page title: <code>{{ node.title }}</code>, location: <code>{{ node.path }}</code>.
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</blockquote>
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{%- endcapture -%}
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{%- else -%}
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{%- include components/nav/children.html node=node ancestors=include.ancestors all=include.all -%}
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<li class="nav-list-item">
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{%- if nav_children.size >= 1 -%}
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<button class="nav-list-expander btn-reset" aria-label="toggle items in {{ node.title }} category" aria-pressed="false">
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<svg viewBox="0 0 24 24" aria-hidden="true"><use xlink:href="#svg-arrow-right"></use></svg>
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</button>
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{%- endif -%}
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<a href="{{ node.url | relative_url }}" class="nav-list-link">{{ node.title }}</a>
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{%- if nav_children.size >= 1 -%}
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{%- if node.child_nav_order == 'desc' or node.child_nav_order == 'reversed' -%}
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{%- assign nav_children = nav_children | reverse -%}
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{%- endif -%}
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{%- assign nav_ancestors = include.ancestors | push: node.title -%}
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{%- include components/nav/links.html pages=nav_children ancestors=nav_ancestors all=include.all -%}
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{%- endif -%}
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</li>
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{%- endif -%}
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{%- endif -%}
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{%- endfor -%}
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</ul>
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{%- comment -%}{%- endcomment -%}
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