declarative_content.clj

(ns chromex.ext.declarative-content
  "Use the chrome.declarativeContent API to take actions depending on the content of a page, without requiring permission to
   read the page's content.

     * available since Chrome 33
     * https://developer.chrome.com/extensions/declarativeContent"

  (:refer-clojure :only [defmacro defn apply declare meta let partial])
  (:require [chromex.wrapgen :refer [gen-wrap-helper]]
            [chromex.callgen :refer [gen-call-helper gen-tap-all-events-call]]))

(declare api-table)
(declare gen-call)

; -- events -----------------------------------------------------------------------------------------------------------------
;
; docs: https://github.com/binaryage/chromex/#tapping-events

(defmacro tap-on-page-changed-events
  "
   Events will be put on the |channel| with signature [::on-page-changed []].

   Note: |args| will be passed as additional parameters into Chrome event's .addListener call.

   https://developer.chrome.com/extensions/declarativeContent#event-onPageChanged."
  ([channel & args] (apply gen-call :event ::on-page-changed &form channel args)))

; -- convenience ------------------------------------------------------------------------------------------------------------

(defmacro tap-all-events
  "Taps all valid non-deprecated events in chromex.ext.declarative-content namespace."
  [chan]
  (gen-tap-all-events-call api-table (meta &form) chan))

; ---------------------------------------------------------------------------------------------------------------------------
; -- API TABLE --------------------------------------------------------------------------------------------------------------
; ---------------------------------------------------------------------------------------------------------------------------

(def api-table
  {:namespace "chrome.declarativeContent", :since "33", :events [{:id ::on-page-changed, :name "onPageChanged"}]})

; -- helpers ----------------------------------------------------------------------------------------------------------------

; code generation for native API wrapper
(defmacro gen-wrap [kind item-id config & args]
  (apply gen-wrap-helper api-table kind item-id config args))

; code generation for API call-site
(def gen-call (partial gen-call-helper api-table))