Brazen Framework - Item Attributes Resolver

Item attributes resolution for the Brazen user scripts framework

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作者: brazenvoid
バージョン: 3.0.1
作成日: 2021/07/19
更新日: 2026/06/09
大きさ: 4.91KB
ライセンス: GPL-3.0-only

Brazen Framework — Item Attributes Resolver (developer guide)

Resolve per-tile metadata for compliance filters when search results do not expose everything on the thumbnail row.

Greasy Fork: Item Attributes Resolver · Requires: Utilities · Used by: Framework core

Class name: BrazenItemAttributesResolver (filename uses singular Attribute).

Constructor config

new BrazenItemAttributesResolver({
  itemLinkSelector: 'a.thumb',           // href for deep fetch
  itemDeepAnalysisSelector: '#metadata', // fragment loaded from detail page
  requestDelay: 200,                     // ms multiplier between deep loads
  onDeepAttributesResolution: (item) => { /* re-run compliance */ },
})

Framework wires onDeepAttributesResolution to _complyItem(item) + _onAfterComplianceRun.

Storage model

Resolved values live on the DOM node: item[0].scriptAttributes — a plain object keyed by normalized attribute names.

Attribute names are formatted: attribute.toLowerCase().replaceAll(' ', '_').

Attribute kinds

Registration	When it runs	Framework usage
`addAttribute(name, extractor)`	During `resolveAttributes(item)` on first compliance pass	Shallow read from list tile
`addAsyncAttribute(name, extractor)`	Not auto-invoked by framework	Register for custom/manual use
`addDeepAttribute(name, extractor)`	Lazy — when `get()` misses and deep attrs exist	Detail-page scrape

Shallow flow

this._itemAttributesResolver.addAttribute('tags', (item) => {
  return item.find('.tag').map((i, el) => $(el).text()).get()
})

resolveAttributes(item) creates scriptAttributes, runs all shallow extractors, does not call async or deep extractors.

Deep flow

When get(item, 'tags') returns undefined and _hasDeepAttributes:

Read href from item.find(itemLinkSelector).first().
Utilities.sleep(_requestIteration * requestDelay) — throttles parallel fetches.
Hidden sandbox #brazen-item-attributes-resolver-sandbox loads url + ' ' + itemDeepAnalysisSelector.
Each deep extractor runs with sandbox jQuery as argument.
onDeepAttributesResolution(item) fires.
Sandbox emptied; _requestIteration incremented.

Manual injection

this._itemAttributesResolver.set(item, 'synthetic_tag', 'value')

Use in _onFirstHitBeforeCompliance when parsing tile DOM before filters run.

Public API

Method	Role
`addAttribute(name, callback)`	Shallow extractor `(item: JQuery) => *`
`addAsyncAttribute(name, callback)`	Stored only; not called by `resolveAttributes`
`addDeepAttribute(name, callback)`	Deep extractor `(sandbox: JQuery) => *`
`resolveAttributes(item, afterCallback?)`	First-pass shallow resolution
`get(item, attribute)`	Read value; may trigger deep load
`set(item, attribute, value)`	Write into `scriptAttributes`
`completeResolutionRun()`	Reset `_requestIteration` to 1 between compliance passes

Framework calls completeResolutionRun() at end of _validateCompliance.

Built-in framework attributes

Constant	Name	Source
`ITEM_NAME`	`name`	`itemNameSelector` text (if selector non-empty)
`ITEM_PROCESSED_ONCE`	`processed_once`	`false` until first compliance completes

Access in app code via this._get(item, ITEM_NAME) (framework protected helper).

When to use deep attributes

Use when compact search layouts omit tags on tiles, or duration/rating exists only on the detail page.

Cost: extra HTTP work and cumulative delay (requestDelay * iteration). Prefer shallow reads when the DOM already exposes data.

Filter helpers such as _addItemTagAttribute and _addItemDurationRangeFilter register attributes automatically.

Next in stack: Framework core (optional Paginator / Subscriptions Loader before core).