refactor: simplify the code

toggle-pane.yazi/README.md

@@ -23,6 +23,7 @@ ya pack -a yazi-rs/plugins:toggle-pane
 Hide/Show preview:
 
 ```toml
+# keymap.toml
 [[manager.prepend_keymap]]
 on   = "T"
 run  = "plugin toggle-pane min-preview"
@@ -32,6 +33,7 @@ desc = "Show or hide the preview pane"
 Maximize/Restore preview:
 
 ```toml
+# keymap.toml
 [[manager.prepend_keymap]]
 on   = "T"
 run  = "plugin toggle-pane max-preview"
@@ -52,6 +54,25 @@ end
 
 In the example above, when it detects that you're [using Yazi in nvim](https://yazi-rs.github.io/docs/resources#vim), the preview is hidden by default — you can always press `T` (or any key you've bound) to show it again.
 
+## Tips
+
+This plugin only maximizes the "available preview area", without actually changing the content size.
+
+This means that the appearance of your preview largely depends on the previewer you are using.
+However, most previewers tend to make the most of the available space, so this usually isn't an issue.
+
+For image previews, you may want to tune up the [`max_width`][max-width] and [`max_height`][max-height] options in your `yazi.toml`:
+
+```toml
+[preview]
+# Change them to your desired values
+max_width  = 1000
+max_height = 1000
+```
+
+[max-width]: https://yazi-rs.github.io/docs/configuration/yazi/#preview.max_width
+[max-height]: https://yazi-rs.github.io/docs/configuration/yazi/#preview.max_height
+
 ## License
 
 This plugin is MIT-licensed. For more information, check the [LICENSE](LICENSE) file.

toggle-pane.yazi/main.lua

@@ -3,23 +3,21 @@
 
 local function entry(st, job)
 	local R = MANAGER.ratio
+	job = type(job) == "string" and { args = { job } } or job
+
 	st.parent = st.parent and st.parent or R.parent
 	st.current = st.current and st.current or R.current
 	st.preview = st.preview and st.preview or R.preview
 
-	local act = type(job) == "string" and job or job.args[1]
+	local act, to = string.match(job.args[1] or "", "(.-)-(.+)")
-	if act == "min-parent" then
+	if act == "min" then
-		st.parent = st.parent == R.parent and 0 or R.parent
+		st[to] = st[to] == R[to] and 0 or R[to]
-	elseif act == "min-current" then
+	elseif act == "max" then
-		st.current = st.current == R.current and 0 or R.current
+		local max = st[to] == 65535 and R[to] or 65535
-	elseif act == "min-preview" then
+		st.parent = st.parent == 65535 and R.parent or st.parent
-		st.preview = st.preview == R.preview and 0 or R.preview
+		st.current = st.current == 65535 and R.current or st.current
-	elseif act == "max-parent" then
+		st.preview = st.preview == 65535 and R.preview or st.preview
-		st.parent = st.parent == 65535 and R.parent or 65535
+		st[to] = max
-	elseif act == "max-current" then
-		st.current = st.current == 65535 and R.current or 65535
-	elseif act == "max-preview" then
-		st.preview = st.preview == 65535 and R.preview or 65535
 	end
 
 	if not st.old then
@@ -37,7 +35,7 @@ local function entry(st, job)
 		end
 	end
 
-	if act == "reset" then
+	if not act then
 		Tab.layout, st.old = st.old, nil
 		st.parent, st.current, st.preview = nil, nil, nil
 	end