From 7dd596ebcece8badf18586186c9712b364fab42e Mon Sep 17 00:00:00 2001
From: kon-foo <25391223+kon-foo@users.noreply.github.com>
Date: Wed, 21 Feb 2024 16:18:44 +0000
Subject: [PATCH] docs: Fix in explorer.md (#911)

---
 docs/features/explorer.md |  155 +++++++++++++++++++++++++++++++++++++++------------
 1 files changed, 117 insertions(+), 38 deletions(-)

diff --git a/docs/features/explorer.md b/docs/features/explorer.md
index 6f941b8..a2acb86 100644
--- a/docs/features/explorer.md
+++ b/docs/features/explorer.md
@@ -8,6 +8,8 @@
 
 By default, it shows all folders and files on your page. To display the explorer in a different spot, you can edit the [[layout]].
 
+Display names for folders get determined by the `title` frontmatter field in `folder/index.md` (more detail in [[authoring content | Authoring Content]]). If this file does not exist or does not contain frontmatter, the local folder name will be used instead.
+
 > [!info]
 > The explorer uses local storage by default to save the state of your explorer. This is done to ensure a smooth experience when navigating to different pages.
 >
@@ -24,12 +26,12 @@
   title: "Explorer", // title of the explorer component
   folderClickBehavior: "collapse", // what happens when you click a folder ("link" to navigate to folder page on click or "collapse" to collapse folder on click)
   folderDefaultState: "collapsed", // default state of folders ("collapsed" or "open")
-  useSavedState: true, // wether to use local storage to save "state" (which folders are opened) of explorer
+  useSavedState: true, // whether to use local storage to save "state" (which folders are opened) of explorer
   // Sort order: folders first, then files. Sort folders and files alphabetically
   sortFn: (a, b) => {
     ... // default implementation shown later
   },
-  filterFn: undefined,
+  filterFn: filterFn: (node) => node.name !== "tags", // filters out 'tags' folder
   mapFn: undefined,
   // what order to apply functions in
   order: ["filter", "map", "sort"],
@@ -40,7 +42,7 @@
 
 Want to customize it even more?
 
-- Removing table of contents: remove `Component.Explorer()` from `quartz.layout.ts`
+- Removing explorer: remove `Component.Explorer()` from `quartz.layout.ts`
   - (optional): After removing the explorer component, you can move the [[table of contents | Table of Contents]] component back to the `left` part of the layout
 - Changing `sort`, `filter` and `map` behavior: explained in [[#Advanced customization]]
 - Component:
@@ -57,7 +59,8 @@
 ```ts title="quartz/components/ExplorerNode.tsx" {2-5}
 export class FileNode {
   children: FileNode[]  // children of current node
-  name: string  // name of node (only useful for folders)
+  name: string  // last part of slug
+  displayName: string // what actually should be displayed in the explorer
   file: QuartzPluginData | null // set if node is a file, see `QuartzPluginData` for more detail
   depth: number // depth of current node
 
@@ -72,7 +75,12 @@
 Component.Explorer({
   sortFn: (a, b) => {
     if ((!a.file && !b.file) || (a.file && b.file)) {
-      return a.name.localeCompare(b.name)
+      // sensitivity: "base": Only strings that differ in base letters compare as unequal. Examples: a โ‰  b, a = รก, a = A
+      // numeric: true: Whether numeric collation should be used, such that "1" < "2" < "10"
+      return a.displayName.localeCompare(b.displayName, undefined, {
+        numeric: true,
+        sensitivity: "base",
+      })
     }
     if (a.file && !b.file) {
       return 1
@@ -120,7 +128,7 @@
 Component.Explorer({
   sortFn: (a, b) => {
     if ((!a.file && !b.file) || (a.file && b.file)) {
-      return a.name.localeCompare(b.name)
+      return a.displayName.localeCompare(b.displayName)
     }
     if (a.file && !b.file) {
       return -1
@@ -138,7 +146,7 @@
 ```ts title="quartz.layout.ts"
 Component.Explorer({
   mapFn: (node) => {
-    node.name = node.name.toUpperCase()
+    node.displayName = node.displayName.toUpperCase()
   },
 })
 ```
@@ -159,44 +167,17 @@
 
 You can customize this by changing the entries of the `omit` set. Simply add all folder or file names you want to remove.
 
-## Advanced examples
+### Show every element in explorer
 
-### Add emoji prefix
-
-To add emoji prefixes (๐Ÿ“ for folders, ๐Ÿ“„ for files), you could use a map function like this:
+To override the default filter function that removes the `tags` folder from the explorer, you can set the filter function to `undefined`.
 
 ```ts title="quartz.layout.ts"
 Component.Explorer({
-  mapFn: (node) => {
-    // dont change name of root node
-    if (node.depth > 0) {
-      // set emoji for file/folder
-      if (node.file) {
-        node.name = "๐Ÿ“„ " + node.name
-      } else {
-        node.name = "๐Ÿ“ " + node.name
-      }
-    }
-  },
-}})
-```
-
-### Putting it all together
-
-In this example, we're going to customize the explorer by using functions from examples above to [[#Add emoji prefix | add emoji prefixes]], [[#remove-list-of-elements-filter| filter out some folders]] and [[#use-sort-to-put-files-first | sort with files above folders]].
-
-```ts title="quartz.layout.ts"
-Component.Explorer({
-  filterFn: sampleFilterFn,
-  mapFn: sampleMapFn,
-  sortFn: sampleSortFn,
-  order: ["filter", "sort", "map"],
+  filterFn: undefined, // apply no filter function, every file and folder will visible
 })
 ```
 
-Notice how we customized the `order` array here. This is done because the default order applies the `sort` function last. While this normally works well, it would cause unintended behavior here, since we changed the first characters of all display names. In our example, `sort` would be applied based off the emoji prefix instead of the first _real_ character.
-
-To fix this, we just changed around the order and apply the `sort` function before changing the display names in the `map` function.
+## Advanced examples
 
 > [!tip]
 > When writing more complicated functions, the `layout` file can start to look very cramped.
@@ -225,3 +206,101 @@
 >   sortFn: sortFn,
 > })
 > ```
+
+### Add emoji prefix
+
+To add emoji prefixes (๐Ÿ“ for folders, ๐Ÿ“„ for files), you could use a map function like this:
+
+```ts title="quartz.layout.ts"
+Component.Explorer({
+  mapFn: (node) => {
+    // dont change name of root node
+    if (node.depth > 0) {
+      // set emoji for file/folder
+      if (node.file) {
+        node.displayName = "๐Ÿ“„ " + node.displayName
+      } else {
+        node.displayName = "๐Ÿ“ " + node.displayName
+      }
+    }
+  },
+})
+```
+
+### Putting it all together
+
+In this example, we're going to customize the explorer by using functions from examples above to [[#Add emoji prefix | add emoji prefixes]], [[#remove-list-of-elements-filter| filter out some folders]] and [[#use-sort-to-put-files-first | sort with files above folders]].
+
+```ts title="quartz.layout.ts"
+Component.Explorer({
+  filterFn: sampleFilterFn,
+  mapFn: sampleMapFn,
+  sortFn: sampleSortFn,
+  order: ["filter", "sort", "map"],
+})
+```
+
+Notice how we customized the `order` array here. This is done because the default order applies the `sort` function last. While this normally works well, it would cause unintended behavior here, since we changed the first characters of all display names. In our example, `sort` would be applied based off the emoji prefix instead of the first _real_ character.
+
+To fix this, we just changed around the order and apply the `sort` function before changing the display names in the `map` function.
+
+### Use `sort` with pre-defined sort order
+
+Here's another example where a map containing file/folder names (as slugs) is used to define the sort order of the explorer in quartz. All files/folders that aren't listed inside of `nameOrderMap` will appear at the top of that folders hierarchy level.
+
+It's also worth mentioning, that the smaller the number set in `nameOrderMap`, the higher up the entry will be in the explorer. Incrementing every folder/file by 100, makes ordering files in their folders a lot easier. Lastly, this example still allows you to use a `mapFn` or frontmatter titles to change display names, as it uses slugs for `nameOrderMap` (which is unaffected by display name changes).
+
+```ts title="quartz.layout.ts"
+Component.Explorer({
+  sortFn: (a, b) => {
+    const nameOrderMap: Record<string, number> = {
+      "poetry-folder": 100,
+      "essay-folder": 200,
+      "research-paper-file": 201,
+      "dinosaur-fossils-file": 300,
+      "other-folder": 400,
+    }
+
+    let orderA = 0
+    let orderB = 0
+
+    if (a.file && a.file.slug) {
+      orderA = nameOrderMap[a.file.slug] || 0
+    } else if (a.name) {
+      orderA = nameOrderMap[a.name] || 0
+    }
+
+    if (b.file && b.file.slug) {
+      orderB = nameOrderMap[b.file.slug] || 0
+    } else if (b.name) {
+      orderB = nameOrderMap[b.name] || 0
+    }
+
+    return orderA - orderB
+  },
+})
+```
+
+For reference, this is how the quartz explorer window would look like with that example:
+
+```
+๐Ÿ“– Poetry Folder
+๐Ÿ“‘ Essay Folder
+    โš—๏ธ Research Paper File
+๐Ÿฆด Dinosaur Fossils File
+๐Ÿ”ฎ Other Folder
+```
+
+And this is how the file structure would look like:
+
+```
+index.md
+poetry-folder
+    index.md
+essay-folder
+    index.md
+    research-paper-file.md
+dinosaur-fossils-file.md
+other-folder
+    index.md
+```

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