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Add `wp.hooks` - JavaScript actions and filters. 

Add a JavaScript hooks library with an API that mirrors the WordPress Plugin API; provides similar functionality and API to PHP hooks.

Called via the global `wp.hooks`, eg: `wp.hooks.addAction()`, etc. Adds:

* `addAction( 'hook', 'vendor/plugin/function', callback, priority )`
* `addFilter( 'hook', 'vendor/plugin/function', callback, priority )`
* `removeAction( 'hook', 'vendor/plugin/function' )`
* `removeFilter( 'hook',  'vendor/plugin/function' )`
* `removeAllActions( 'hook' )`
* `removeAllFilters( 'hook' )`
* `doAction( 'hook', arg1, arg2, moreArgs, finalArg )`
* `applyFilters( 'hook', content, arg1, arg2, moreArgs, finalArg )`
* `doingAction( 'hook' )`
* `doingFilter( 'hook' )`
* `didAction( 'hook' )`
* `didFilter( 'hook' )`
* `hasAction( 'hook' )`
* `hasFilter( 'hook' )`

Props adamsilverstein, jnylen0, aduth, kadamwhite, youknowriad, schlessera, mikeschinkel, azaozz, vhauri, CaptainN, scribu, carldanley, chetanchauhan, mgibbs189, stephenharris, justnorris, koopersmith, gcorne, TV productions, atimmer.

Fixes #21170.


Built from https://develop.svn.wordpress.org/trunk@41375


git-svn-id: http://core.svn.wordpress.org/trunk@41208 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Adam Silverstein 2017-09-12 12:54:45 +00:00
parent d8f445bf0f
commit f36cccde7e
5 changed files with 703 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

698
wp-includes/js/wp-hooks.js Normal file
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@ -0,0 +1,698 @@
this["wp"] = this["wp"] || {}; this["wp"]["hooks"] =
/******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, {
/******/ configurable: false,
/******/ enumerable: true,
/******/ get: getter
/******/ });
/******/ }
/******/ };
/******/
/******/ // getDefaultExport function for compatibility with non-harmony modules
/******/ __webpack_require__.n = function(module) {
/******/ var getter = module && module.__esModule ?
/******/ function getDefault() { return module['default']; } :
/******/ function getModuleExports() { return module; };
/******/ __webpack_require__.d(getter, 'a', getter);
/******/ return getter;
/******/ };
/******/
/******/ // Object.prototype.hasOwnProperty.call
/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(__webpack_require__.s = 13);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* Validate a hookName string.
*
* @param {string} hookName The hook name to validate. Should be a non empty string containing
* only numbers, letters, dashes, periods and underscores. Also,
* the hook name cannot begin with `__`.
*
* @return {bool} Whether the hook name is valid.
*/
function validateHookName(hookName) {
if ('string' !== typeof hookName || '' === hookName) {
console.error('The hook name must be a non-empty string.');
return false;
}
if (/^__/.test(hookName)) {
console.error('The hook name cannot begin with `__`.');
return false;
}
if (!/^[a-zA-Z][a-zA-Z0-9_.-]*$/.test(hookName)) {
console.error('The hook name can only contain numbers, letters, dashes, periods and underscores.');
return false;
}
return true;
}
exports.default = validateHookName;
/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* Validate a namespace string.
*
* @param {string} namespace The namespace to validate - should take the form
* `vendorName/pluginName/functionName`.
*
* @return {bool} Whether the namespace is valid.
*/
function validateNamespace(namespace) {
if ('string' !== typeof namespace || '' === namespace) {
console.error('The namespace must be a non-empty string.');
return false;
}
if (!/^[a-zA-Z][a-zA-Z0-9_.-/]*$/.test(namespace)) {
console.error('The namespace can only contain numbers, letters, dashes, periods and underscores, plus the forward slash dividing slug and description in the namespace.');
return false;
}
if (!/^[a-zA-Z][a-zA-Z0-9_.-]*\/[a-zA-Z][a-zA-Z0-9_.-]*\/[a-zA-Z][a-zA-Z0-9_.-]*$/.test(namespace)) {
console.error('The namespace must take the form `vendor/plugin/function`.');
return false;
}
return true;
}
exports.default = validateNamespace;
/***/ }),
/* 2 */,
/* 3 */,
/* 4 */,
/* 5 */,
/* 6 */,
/* 7 */,
/* 8 */,
/* 9 */,
/* 10 */,
/* 11 */,
/* 12 */,
/* 13 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.didFilter = exports.didAction = exports.doingFilter = exports.doingAction = exports.currentFilter = exports.currentAction = exports.applyFilters = exports.doAction = exports.removeAllFilters = exports.removeAllActions = exports.hasFilter = exports.hasAction = exports.removeFilter = exports.removeAction = exports.addFilter = exports.addAction = undefined;
var _hooks = __webpack_require__(14);
var _hooks2 = _interopRequireDefault(_hooks);
var _createAddHook = __webpack_require__(15);
var _createAddHook2 = _interopRequireDefault(_createAddHook);
var _createRemoveHook = __webpack_require__(16);
var _createRemoveHook2 = _interopRequireDefault(_createRemoveHook);
var _createHasHook = __webpack_require__(17);
var _createHasHook2 = _interopRequireDefault(_createHasHook);
var _createRunHook = __webpack_require__(18);
var _createRunHook2 = _interopRequireDefault(_createRunHook);
var _createCurrentHook = __webpack_require__(19);
var _createCurrentHook2 = _interopRequireDefault(_createCurrentHook);
var _createDoingHook = __webpack_require__(20);
var _createDoingHook2 = _interopRequireDefault(_createDoingHook);
var _createDidHook = __webpack_require__(21);
var _createDidHook2 = _interopRequireDefault(_createDidHook);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
// Add action/filter functions.
var addAction = exports.addAction = (0, _createAddHook2.default)(_hooks2.default.actions);
var addFilter = exports.addFilter = (0, _createAddHook2.default)(_hooks2.default.filters);
// Remove action/filter functions.
var removeAction = exports.removeAction = (0, _createRemoveHook2.default)(_hooks2.default.actions);
var removeFilter = exports.removeFilter = (0, _createRemoveHook2.default)(_hooks2.default.filters);
// Has action/filter functions.
var hasAction = exports.hasAction = (0, _createHasHook2.default)(_hooks2.default.actions);
var hasFilter = exports.hasFilter = (0, _createHasHook2.default)(_hooks2.default.filters);
// Remove all actions/filters functions.
var removeAllActions = exports.removeAllActions = (0, _createRemoveHook2.default)(_hooks2.default.actions, true);
var removeAllFilters = exports.removeAllFilters = (0, _createRemoveHook2.default)(_hooks2.default.filters, true);
// Do action/apply filters functions.
var doAction = exports.doAction = (0, _createRunHook2.default)(_hooks2.default.actions);
var applyFilters = exports.applyFilters = (0, _createRunHook2.default)(_hooks2.default.filters, true);
// Current action/filter functions.
var currentAction = exports.currentAction = (0, _createCurrentHook2.default)(_hooks2.default.actions);
var currentFilter = exports.currentFilter = (0, _createCurrentHook2.default)(_hooks2.default.filters);
// Doing action/filter: true while a hook is being run.
var doingAction = exports.doingAction = (0, _createDoingHook2.default)(_hooks2.default.actions);
var doingFilter = exports.doingFilter = (0, _createDoingHook2.default)(_hooks2.default.filters);
// Did action/filter functions.
var didAction = exports.didAction = (0, _createDidHook2.default)(_hooks2.default.actions);
var didFilter = exports.didFilter = (0, _createDidHook2.default)(_hooks2.default.filters);
/***/ }),
/* 14 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* Contains the registered hooks, keyed by hook type. Each hook type is an
* array of objects with priority and callback of each registered hook.
*/
var HOOKS = {
actions: {},
filters: {}
};
exports.default = HOOKS;
/***/ }),
/* 15 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _validateNamespace = __webpack_require__(1);
var _validateNamespace2 = _interopRequireDefault(_validateNamespace);
var _validateHookName = __webpack_require__(0);
var _validateHookName2 = _interopRequireDefault(_validateHookName);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Returns a function which, when invoked, will add a hook.
*
* @param {Object} hooks Stored hooks, keyed by hook name.
*
* @return {Function} Function that adds a new hook.
*/
function createAddHook(hooks) {
/**
* Adds the hook to the appropriate hooks container.
*
* @param {string} hookName Name of hook to add
* @param {string} namespace The unique namespace identifying the callback in the form `vendorName/pluginName/functionName`.
* @param {Function} callback Function to call when the hook is run
* @param {?number} priority Priority of this hook (default=10)
*/
return function addHook(hookName, namespace, callback) {
var priority = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 10;
if (!(0, _validateHookName2.default)(hookName)) {
return;
}
if (!(0, _validateNamespace2.default)(namespace)) {
return;
}
if ('function' !== typeof callback) {
console.error('The hook callback must be a function.');
return;
}
// Validate numeric priority
if ('number' !== typeof priority) {
console.error('If specified, the hook priority must be a number.');
return;
}
var handler = { callback: callback, priority: priority, namespace: namespace };
if (hooks.hasOwnProperty(hookName)) {
// Find the correct insert index of the new hook.
var handlers = hooks[hookName].handlers;
var i = 0;
while (i < handlers.length) {
if (handlers[i].priority > priority) {
break;
}
i++;
}
// Insert (or append) the new hook.
handlers.splice(i, 0, handler);
// We may also be currently executing this hook. If the callback
// we're adding would come after the current callback, there's no
// problem; otherwise we need to increase the execution index of
// any other runs by 1 to account for the added element.
(hooks.__current || []).forEach(function (hookInfo) {
if (hookInfo.name === hookName && hookInfo.currentIndex >= i) {
hookInfo.currentIndex++;
}
});
} else {
// This is the first hook of its type.
hooks[hookName] = {
handlers: [handler],
runs: 0
};
}
};
}
exports.default = createAddHook;
/***/ }),
/* 16 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _validateNamespace = __webpack_require__(1);
var _validateNamespace2 = _interopRequireDefault(_validateNamespace);
var _validateHookName = __webpack_require__(0);
var _validateHookName2 = _interopRequireDefault(_validateHookName);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Returns a function which, when invoked, will remove a specified hook or all
* hooks by the given name.
*
* @param {Object} hooks Stored hooks, keyed by hook name.
* @param {bool} removeAll Whether to remove all callbacks for a hookName, without regard to namespace. Used to create `removeAll*` functions.
*
* @return {Function} Function that removes hooks.
*/
function createRemoveHook(hooks, removeAll) {
/**
* Removes the specified callback (or all callbacks) from the hook with a
* given hookName and namespace.
*
* @param {string} hookName The name of the hook to modify.
* @param {string} namespace The unique namespace identifying the callback in the form `vendorName/pluginName/functionName`.
*
* @return {number} The number of callbacks removed.
*/
return function removeHook(hookName, namespace) {
if (!(0, _validateHookName2.default)(hookName)) {
return;
}
if (!removeAll && !(0, _validateNamespace2.default)(namespace)) {
return;
}
// Bail if no hooks exist by this name
if (!hooks.hasOwnProperty(hookName)) {
return 0;
}
var handlersRemoved = 0;
if (removeAll) {
handlersRemoved = hooks[hookName].handlers.length;
hooks[hookName] = {
runs: hooks[hookName].runs,
handlers: []
};
} else {
// Try to find the specified callback to remove.
var handlers = hooks[hookName].handlers;
var _loop = function _loop(i) {
if (handlers[i].namespace === namespace) {
handlers.splice(i, 1);
handlersRemoved++;
// This callback may also be part of a hook that is
// currently executing. If the callback we're removing
// comes after the current callback, there's no problem;
// otherwise we need to decrease the execution index of any
// other runs by 1 to account for the removed element.
(hooks.__current || []).forEach(function (hookInfo) {
if (hookInfo.name === hookName && hookInfo.currentIndex >= i) {
hookInfo.currentIndex--;
}
});
}
};
for (var i = handlers.length - 1; i >= 0; i--) {
_loop(i);
}
}
return handlersRemoved;
};
}
exports.default = createRemoveHook;
/***/ }),
/* 17 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* Returns a function which, when invoked, will return whether any handlers are
* attached to a particular hook.
*
* @param {Object} hooks Stored hooks, keyed by hook name.
*
* @return {Function} Function that returns whether any handlers are
* attached to a particular hook.
*/
function createHasHook(hooks) {
/**
* Returns how many handlers are attached for the given hook.
*
* @param {string} hookName The name of the hook to check for.
*
* @return {number} The number of handlers that are attached to
* the given hook.
*/
return function hasHook(hookName) {
return hooks.hasOwnProperty(hookName) ? hooks[hookName].handlers.length : 0;
};
}
exports.default = createHasHook;
/***/ }),
/* 18 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _validateHookName = __webpack_require__(0);
var _validateHookName2 = _interopRequireDefault(_validateHookName);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Returns a function which, when invoked, will execute all callbacks
* registered to a hook of the specified type, optionally returning the final
* value of the call chain.
*
* @param {Object} hooks Stored hooks, keyed by hook name.
* @param {?bool} returnFirstArg Whether each hook callback is expected to
* return its first argument.
*
* @return {Function} Function that runs hook callbacks.
*/
function createRunHook(hooks, returnFirstArg) {
/**
* Runs all callbacks for the specified hook.
*
* @param {string} hookName The name of the hook to run.
* @param {...*} args Arguments to pass to the hook callbacks.
*
* @return {*} Return value of runner, if applicable.
*/
return function runHooks(hookName) {
if (!(0, _validateHookName2.default)(hookName)) {
return;
}
if (!hooks.hasOwnProperty(hookName)) {
hooks[hookName] = {
runs: 0,
handlers: []
};
}
var handlers = hooks[hookName].handlers;
for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
args[_key - 1] = arguments[_key];
}
if (!handlers.length) {
return returnFirstArg ? args[0] : undefined;
}
var hookInfo = {
name: hookName,
currentIndex: 0
};
hooks.__current = hooks.__current || [];
hooks.__current.push(hookInfo);
hooks[hookName].runs++;
var maybeReturnValue = args[0];
while (hookInfo.currentIndex < handlers.length) {
var handler = handlers[hookInfo.currentIndex];
maybeReturnValue = handler.callback.apply(null, args);
if (returnFirstArg) {
args[0] = maybeReturnValue;
}
hookInfo.currentIndex++;
}
hooks.__current.pop();
if (returnFirstArg) {
return maybeReturnValue;
}
};
}
exports.default = createRunHook;
/***/ }),
/* 19 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* Returns a function which, when invoked, will return the name of the
* currently running hook, or `null` if no hook of the given type is currently
* running.
*
* @param {Object} hooks Stored hooks, keyed by hook name.
*
* @return {Function} Function that returns the current hook.
*/
function createCurrentHook(hooks, returnFirstArg) {
/**
* Returns the name of the currently running hook, or `null` if no hook of
* the given type is currently running.
*
* @return {?string} The name of the currently running hook, or
* `null` if no hook is currently running.
*/
return function currentHook() {
if (!hooks.__current || !hooks.__current.length) {
return null;
}
return hooks.__current[hooks.__current.length - 1].name;
};
}
exports.default = createCurrentHook;
/***/ }),
/* 20 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* Returns a function which, when invoked, will return whether a hook is
* currently being executed.
*
* @param {Object} hooks Stored hooks, keyed by hook name.
*
* @return {Function} Function that returns whether a hook is currently
* being executed.
*/
function createDoingHook(hooks) {
/**
* Returns whether a hook is currently being executed.
*
* @param {?string} hookName The name of the hook to check for. If
* omitted, will check for any hook being executed.
*
* @return {bool} Whether the hook is being executed.
*/
return function doingHook(hookName) {
// If the hookName was not passed, check for any current hook.
if ('undefined' === typeof hookName) {
return 'undefined' !== typeof hooks.__current[0];
}
// Return the __current hook.
return hooks.__current[0] ? hookName === hooks.__current[0].name : false;
};
}
exports.default = createDoingHook;
/***/ }),
/* 21 */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _validateHookName = __webpack_require__(0);
var _validateHookName2 = _interopRequireDefault(_validateHookName);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Returns a function which, when invoked, will return the number of times a
* hook has been called.
*
* @param {Object} hooks Stored hooks, keyed by hook name.
*
* @return {Function} Function that returns a hook's call count.
*/
function createDidHook(hooks) {
/**
* Returns the number of times an action has been fired.
*
* @param {string} hookName The hook name to check.
*
* @return {number} The number of times the hook has run.
*/
return function didHook(hookName) {
if (!(0, _validateHookName2.default)(hookName)) {
return;
}
return hooks.hasOwnProperty(hookName) && hooks[hookName].runs ? hooks[hookName].runs : 0;
};
}
exports.default = createDidHook;
/***/ })
/******/ ]);

1
wp-includes/js/wp-hooks.min.js vendored Normal file
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File diff suppressed because one or more lines are too long

2
wp-includes/plugin.php
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@ -363,7 +363,7 @@ function doing_filter( $filter = null ) {
} }
/** /**
* Retrieve the name of an action currently being processed. * Retrieve whether action currently being processed.
* *
* @since 3.9.0 * @since 3.9.0
* *

2
wp-includes/script-loader.php
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@ -85,6 +85,8 @@ function wp_default_scripts( &$scripts ) {
$scripts->add( 'wp-a11y', "/wp-includes/js/wp-a11y$suffix.js", array( 'jquery' ), false, 1 ); $scripts->add( 'wp-a11y', "/wp-includes/js/wp-a11y$suffix.js", array( 'jquery' ), false, 1 );
$scripts->add( 'wp-hooks', "/wp-includes/js/wp-hooks$suffix.js", array(), false, 1 );
$scripts->add( 'sack', "/wp-includes/js/tw-sack$suffix.js", array(), '1.6.1', 1 ); $scripts->add( 'sack', "/wp-includes/js/tw-sack$suffix.js", array(), '1.6.1', 1 );
$scripts->add( 'quicktags', "/wp-includes/js/quicktags$suffix.js", array(), false, 1 ); $scripts->add( 'quicktags', "/wp-includes/js/quicktags$suffix.js", array(), false, 1 );

2
wp-includes/version.php
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@ -4,7 +4,7 @@
* *
* @global string $wp_version * @global string $wp_version
*/ */
$wp_version = '4.9-alpha-41374'; $wp_version = '4.9-alpha-41375';
/** /**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema. * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.