rn-web-cli/tmpl/project/.happypack/s--1052206139.map

React Native for Web

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* Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n *\n */\n\n'use strict';\n\nvar _assign = require('object-assign');\n\nvar EventPluginRegistry = require('./EventPluginRegistry');\nvar ReactEventEmitterMixin = require('./ReactEventEmitterMixin');\nvar ViewportMetrics = require('./ViewportMetrics');\n\nvar getVendorPrefixedEventName = require('./getVendorPrefixedEventName');\nvar isEventSupported = require('./isEventSupported');\n\n/**\n * Summary of `ReactBrowserEventEmitter` event handling:\n *\n *  - Top-level delegation is used to trap most native browser events. This\n *    may only occur in the main thread and is the responsibility of\n *    ReactEventListener, which is injected and can therefore support pluggable\n *    event sources. This is the only work that occurs in the main thread.\n *\n *  - We normalize and de-duplicate events to account for browser quirks. This\n *    may be done in the worker thread.\n *\n *  - Forward these native events (with the associated top-level type used to\n *    trap it) to `EventPluginHub`, which in turn will ask plugins if they want\n *    to extract any synthetic events.\n *\n *  - The `EventPluginHub` will then process each event by annotating them with\n *    \"dispatches\", a sequence of listeners and IDs that care about that event.\n *\n *  - The `EventPluginHub` then dispatches the events.\n *\n * Overview of React and the event system:\n *\n * +------------+    .\n * |    DOM     |    .\n * +------------+    .\n *       |           .\n *       v           .\n * +------------+    .\n * | ReactEvent |    .\n * |  Listener  |    .\n * +------------+    .                         +-----------+\n *       |           .               +--------+|SimpleEvent|\n *       |           .               |         |Plugin     |\n * +-----|------+    .               v         +-----------+\n * |     |      |    .    +--------------+                    +------------+\n * |     +-----------.--->|EventPluginHub|                    |    Event   |\n * |            |    .    |              |     +-----------+  | Propagators|\n * | ReactEvent |    .    |              |     |TapEvent   |  |------------|\n * |  Emitter   |    .    |              |<---+|Plugin     |  |other plugin|\n * |            |    .    |              |     +-----------+  |  utilities |\n * |     +-----------.--->|              |                    +------------+\n * |     |      |    .    +--------------+\n * +-----|------+    .                ^        +-----------+\n *       |           .                |        |Enter/Leave|\n *       +           .                +-------+|Plugin     |\n * +-------------+   .                         +-----------+\n * | application |   .\n * |-------------|   .\n * |             |   .\n * |             |   .\n * +-------------+   .\n *                   .\n *    React Core     .  General Purpose Event Plugin System\n */\n\nvar hasEventPageXY;\nvar alreadyListeningTo = {};\nvar isMonitoringScrollValue = false;\nvar reactTopListenersCounter = 0;\n\n// For events like 'submit' which don't consistently bubble (which we trap at a\n// lower node than `document`), binding at `document` would cause duplicate\n// events so we don't include them here\nvar topEventMapping = {\n  topAbort: 'abort',\n  topAnimationEnd: getVendorPrefixedEventName('animationend') || 'animationend',\n  topAnimationIteration: getVendorPrefixedEventName('animationiteration') || 'animationiteration',\n  topAnimationStart: getVendorPrefixedEventName('animationstart') || 'animationstart',\n  topBlur: 'blur',\n  topCanPlay: 'canplay',\n  topCanPlayThrough: 'canplaythrough',\n  topChange: 'change',\n  topClick: 'click',\n  topCompositionEnd: 'compositionend',\n  topCompositionStart: 'compositionstart',\n  topCompositionUpdate: 'compositionupdate',\n  topContextMenu: 'contextmenu',\n  topCopy: 'copy',\n  topCut: 'cut',\n  topDoubleClick: 'dblclick',\n  topDrag: 'drag',\n  topDragEnd: 'dragend',\n  topDragEnter: 'dragenter',\n  topDragExit: 'dragexit',\n  topDragLeave: 'dragleave',\n  topDragOver: 'dragover',\n  topDragStart: 'dragstart',\n  topDrop: 'drop',\n  topDurationChange: 'durationchange',\n  topEmptied: 'emptied',\n  topEncrypted: 'encrypted',\n  topEnded: 'ended',\n  topError: 'error',\n  topFocus: 'focus',\n  topInput: 'input',\n  topKeyDown: 'keydown',\n  topKeyPress: 'keypress',\n  topKeyUp: 'keyup',\n  topLoadedData: 'loadeddata',\n  topLoadedMetadata: 'loadedmetadata',\n  topLoadStart: 'loadstart',\n  topMouseDown: 'mousedown',\n  topMouseMove: 'mousemove',\n  topMouseOut: 'mouseout',\n  topMouseOver: 'mouseover',\n  topMouseUp: 'mouseup',\n  topPaste: 'paste',\n  topPause: 'pause',\n  topPlay: 'play',\n  topPlaying: 'playing',\n  topProgress: 'progress',\n  topRateChange: 'ratechange',\n  topScroll: 'scroll',\n  topSeeked: 'seeked',\n  topSeeking: 'seeking',\n  topSelectionChange: 'selectionchange',\n  topStalled: 'stalled',\n  topSuspend: 'suspend',\n  topTextInput: 'textInput',\n  topTimeUpdate: 'timeupdate',\n  topTouchCancel: 'touchcancel',\n  topTouchEnd: 'touchend',\n  topTouchMove: 'touchmove',\n  topTouchStart: 'touchstart',\n  topTransitionEnd: getVendorPrefixedEventName('transitionend') || 'transitionend',\n  topVolumeChange: 'volumechange',\n  topWaiting: 'waiting',\n  topWheel: 'wheel'\n};\n\n/**\n * To ensure no conflicts with other potential React instances on the page\n */\nvar topListenersIDKey = '_reactListenersID' + String(Math.random()).slice(2);\n\nfunction getListeningForDocument(mountAt) {\n  // In IE8, `mountAt` is a host object and doesn't have `hasOwnProperty`\n  // directly.\n  if (!Object.prototype.hasOwnProperty.call(mountAt, topListenersIDKey)) {\n    mountAt[topListenersIDKey] = reactTopListenersCounter++;\n    alreadyListeningTo[mountAt[topListenersIDKey]] = {};\n  }\n  return alreadyListeningTo[mountAt[topListenersIDKey]];\n}\n\n/**\n * `ReactBrowserEventEmitter` is used to attach top-level event listeners. For\n * example:\n *\n *   EventPluginHub.putListener('myID', 'onClick', myFunction);\n *\n * This would allocate a \"registration\" of `('onClick', myFunction)` on 'myID'.\n *\n * @internal\n */\nvar ReactBrowserEventEmitter = _assign({}, ReactEventEmitterMixin, {\n  /**\n   * Injectable event backend\n   */\n  ReactEventListener: null,\n\n  injection: {\n    /**\n     * @param {object} ReactEventListener\n     */\n    injectReactEventListener: function (ReactEventListener) {\n      ReactEventListener.setHandleTopLevel(ReactBrowserEventEmitter.handleTopLevel);\n      ReactBrowserEventEmitter.ReactEventListener = ReactEventListener;\n    }\n  },\n\n  /**\n   * Sets whether or not any created callbacks should be enabled.\n   *\n   * @param {boolean} enabled True if callbacks should be enabled.\n   */\n  setEnabled: function (enabled) {\n    if (ReactBrowserEventEmitter.ReactEventListener) {\n      ReactBrowserEventEmitter.ReactEventListener.setEnabled(enabled);\n    }\n  },\n\n  /**\n   * @return {boolean} True if callbacks are enabled.\n   */\n  isEnabled: function () {\n    return !!(ReactBrowserEventEmitter.ReactEventListener && ReactBrowserEventEmitter.ReactEventListener.isEnabled());\n  },\n\n  /**\n   * We listen for bubbled touch events on the document object.\n   *\n   * Firefox v8.01 (and possibly others) exhibited strange behavior when\n   * mounting `onmousemove` events at some node that was not the document\n   * element. The symptoms were that if your mouse is not moving over something\n   * contained within that mount point (for example on the background) the\n   * top-level listeners for `onmousemove` won't be called. However, if you\n   * register the `mousemove` on the document object, then it will of course\n   * catch all `mousemove`s. This along with iOS quirks, justifies restricting\n   * top-level listeners to the document object only, at least for these\n   * movement types of events and possibly all events.\n   *\n   * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html\n   *\n   * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but\n   * they bubble to document.\n   *\n   * @param {string} registrationName Name of listener (e.g. `onClick`).\n   * @param {object} contentDocumentHandle Document which owns the container\n   */\n  listenTo: function (registrationName, contentDocumentHandle) {\n    var mountAt = contentDocumentHandle;\n    var isListening = getListeningForDocument(mountAt);\n    var dependencies = EventPluginRegistry.registrationNameDependencies[registrationName];\n\n    for (var i = 0; i < dependencies.length; i++) {\n      var dependency = dependencies[i];\n      if (!(isListening.hasOwnProperty(dependency) && isListening[dependency])) {\n        if (dependency === 'topWheel') {\n          if (isEventSupported('wheel')) {\n            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topWheel', 'wheel', mountAt);\n          } else if (isEventSupported('mousewheel')) {\n            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topWheel', 'mousewheel', mountAt);\n          } else {\n            // Firefox needs to capture a different mouse scroll event.\n            // @see http://www.quirksmode.org/dom/events/tests/scroll.html\n            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topWheel', 'DOMMouseScroll', mountAt);\n          }\n        } else if (dependency === 'topScroll') {\n          if (isEventSupported('scroll', true)) {\n            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent('topScroll', 'scroll', mountAt);\n          } else {\n            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topScroll', 'scroll', ReactBrowserEventEmitter.ReactEventListener.WINDOW_HANDLE);\n          }\n        } else if (dependency === 'topFocus' || dependency === 'topBlur') {\n          if (isEventSupported('focus', true)) {\n            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent('topFocus', 'focus', mountAt);\n            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent('topBlur', 'blur', mountAt);\n          } else if (isEventSupported('focusin')) {\n            // IE has `focusin` and `focusout` events which bubble.\n            // @see http://www.quirksmode.org/blog/archives/2008/04/delegating_the.html\n            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topFocus', 'focusin', mountAt);\n            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topBlur', 'focusout', mountAt);\n          }\n\n          // to make sure blur and focus event listeners are only attached once\n          isListening.topBlur = true;\n          isListening.topFocus = true;\n        } else if (topEventMapping.hasOwnProperty(dependency)) {\n          ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(dependency, topEventMapping[dependency], mountAt);\n        }\n\n        isListening[dependency] = true;\n      }\n    }\n  },\n\n  trapBubbledEvent: function (topLevelType, handlerBaseName, handle) {\n    return ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(topLevelType, handlerBaseName, handle);\n  },\n\n  trapCapturedEvent: function (topLevelType, handlerBaseName, handle) {\n    return ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(topLevelType, handlerBaseName, handle);\n  },\n\n  /**\n   * Protect against document.createEvent() returning null\n   * Some popup blocker extensions appear to do this:\n   * https://github.com/facebook/react/issues/6887\n   */\n  supportsEventPageXY: function () {\n    if (!document.createEvent) {\n      return false;\n    }\n    var ev = document.createEvent('MouseEvent');\n    return ev != null && 'pageX' in ev;\n  },\n\n  /**\n   * Listens to window scroll and resize events. We cache scroll values so that\n   * application code can access them without triggering reflows.\n   *\n   * ViewportMetrics is only used by SyntheticMouse/TouchEvent and only when\n   * pageX/pageY isn't supported (legacy browsers).\n   *\n   * NOTE: Scroll events do not bubble.\n   *\n   * @see http://www.quirksmode.org/dom/events/scroll.html\n   */\n  ensureScrollValueMonitoring: function () {\n    if (hasEventPageXY === undefined) {\n      hasEventPageXY = ReactBrowserEventEmitter.supportsEventPageXY();\n    }\n    if (!hasEventPageXY && !isMonitoringScrollValue) {\n      var refresh = ViewportMetrics.refreshScrollValues;\n      ReactBrowserEventEmitter.ReactEventListener.monitorScrollValue(refresh);\n      isMonitoringScrollValue = true;\n    }\n  }\n});\n\nmodule.exports = ReactBrowserEventEmitter;"]}