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Diffstat (limited to 'node_modules/react-dom/lib/ChangeEventPlugin.js')
| -rw-r--r-- | node_modules/react-dom/lib/ChangeEventPlugin.js | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/node_modules/react-dom/lib/ChangeEventPlugin.js b/node_modules/react-dom/lib/ChangeEventPlugin.js deleted file mode 100644 index 0da17879e..000000000 --- a/node_modules/react-dom/lib/ChangeEventPlugin.js +++ /dev/null @@ -1,311 +0,0 @@ -/** - * Copyright 2013-present, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under the BSD-style license found in the - * LICENSE file in the root directory of this source tree. An additional grant - * of patent rights can be found in the PATENTS file in the same directory. - * - */ - -'use strict'; - -var EventPluginHub = require('./EventPluginHub'); -var EventPropagators = require('./EventPropagators'); -var ExecutionEnvironment = require('fbjs/lib/ExecutionEnvironment'); -var ReactDOMComponentTree = require('./ReactDOMComponentTree'); -var ReactUpdates = require('./ReactUpdates'); -var SyntheticEvent = require('./SyntheticEvent'); - -var inputValueTracking = require('./inputValueTracking'); -var getEventTarget = require('./getEventTarget'); -var isEventSupported = require('./isEventSupported'); -var isTextInputElement = require('./isTextInputElement'); - -var eventTypes = { - change: { - phasedRegistrationNames: { - bubbled: 'onChange', - captured: 'onChangeCapture' - }, - dependencies: ['topBlur', 'topChange', 'topClick', 'topFocus', 'topInput', 'topKeyDown', 'topKeyUp', 'topSelectionChange'] - } -}; - -function createAndAccumulateChangeEvent(inst, nativeEvent, target) { - var event = SyntheticEvent.getPooled(eventTypes.change, inst, nativeEvent, target); - event.type = 'change'; - EventPropagators.accumulateTwoPhaseDispatches(event); - return event; -} -/** - * For IE shims - */ -var activeElement = null; -var activeElementInst = null; - -/** - * SECTION: handle `change` event - */ -function shouldUseChangeEvent(elem) { - var nodeName = elem.nodeName && elem.nodeName.toLowerCase(); - return nodeName === 'select' || nodeName === 'input' && elem.type === 'file'; -} - -var doesChangeEventBubble = false; -if (ExecutionEnvironment.canUseDOM) { - // See `handleChange` comment below - doesChangeEventBubble = isEventSupported('change') && (!document.documentMode || document.documentMode > 8); -} - -function manualDispatchChangeEvent(nativeEvent) { - var event = createAndAccumulateChangeEvent(activeElementInst, nativeEvent, getEventTarget(nativeEvent)); - - // If change and propertychange bubbled, we'd just bind to it like all the - // other events and have it go through ReactBrowserEventEmitter. Since it - // doesn't, we manually listen for the events and so we have to enqueue and - // process the abstract event manually. - // - // Batching is necessary here in order to ensure that all event handlers run - // before the next rerender (including event handlers attached to ancestor - // elements instead of directly on the input). Without this, controlled - // components don't work properly in conjunction with event bubbling because - // the component is rerendered and the value reverted before all the event - // handlers can run. See https://github.com/facebook/react/issues/708. - ReactUpdates.batchedUpdates(runEventInBatch, event); -} - -function runEventInBatch(event) { - EventPluginHub.enqueueEvents(event); - EventPluginHub.processEventQueue(false); -} - -function startWatchingForChangeEventIE8(target, targetInst) { - activeElement = target; - activeElementInst = targetInst; - activeElement.attachEvent('onchange', manualDispatchChangeEvent); -} - -function stopWatchingForChangeEventIE8() { - if (!activeElement) { - return; - } - activeElement.detachEvent('onchange', manualDispatchChangeEvent); - activeElement = null; - activeElementInst = null; -} - -function getInstIfValueChanged(targetInst, nativeEvent) { - var updated = inputValueTracking.updateValueIfChanged(targetInst); - var simulated = nativeEvent.simulated === true && ChangeEventPlugin._allowSimulatedPassThrough; - - if (updated || simulated) { - return targetInst; - } -} - -function getTargetInstForChangeEvent(topLevelType, targetInst) { - if (topLevelType === 'topChange') { - return targetInst; - } -} - -function handleEventsForChangeEventIE8(topLevelType, target, targetInst) { - if (topLevelType === 'topFocus') { - // stopWatching() should be a noop here but we call it just in case we - // missed a blur event somehow. - stopWatchingForChangeEventIE8(); - startWatchingForChangeEventIE8(target, targetInst); - } else if (topLevelType === 'topBlur') { - stopWatchingForChangeEventIE8(); - } -} - -/** - * SECTION: handle `input` event - */ -var isInputEventSupported = false; -if (ExecutionEnvironment.canUseDOM) { - // IE9 claims to support the input event but fails to trigger it when - // deleting text, so we ignore its input events. - - isInputEventSupported = isEventSupported('input') && (!('documentMode' in document) || document.documentMode > 9); -} - -/** - * (For IE <=9) Starts tracking propertychange events on the passed-in element - * and override the value property so that we can distinguish user events from - * value changes in JS. - */ -function startWatchingForValueChange(target, targetInst) { - activeElement = target; - activeElementInst = targetInst; - activeElement.attachEvent('onpropertychange', handlePropertyChange); -} - -/** - * (For IE <=9) Removes the event listeners from the currently-tracked element, - * if any exists. - */ -function stopWatchingForValueChange() { - if (!activeElement) { - return; - } - activeElement.detachEvent('onpropertychange', handlePropertyChange); - - activeElement = null; - activeElementInst = null; -} - -/** - * (For IE <=9) Handles a propertychange event, sending a `change` event if - * the value of the active element has changed. - */ -function handlePropertyChange(nativeEvent) { - if (nativeEvent.propertyName !== 'value') { - return; - } - if (getInstIfValueChanged(activeElementInst, nativeEvent)) { - manualDispatchChangeEvent(nativeEvent); - } -} - -function handleEventsForInputEventPolyfill(topLevelType, target, targetInst) { - if (topLevelType === 'topFocus') { - // In IE8, we can capture almost all .value changes by adding a - // propertychange handler and looking for events with propertyName - // equal to 'value' - // In IE9, propertychange fires for most input events but is buggy and - // doesn't fire when text is deleted, but conveniently, selectionchange - // appears to fire in all of the remaining cases so we catch those and - // forward the event if the value has changed - // In either case, we don't want to call the event handler if the value - // is changed from JS so we redefine a setter for `.value` that updates - // our activeElementValue variable, allowing us to ignore those changes - // - // stopWatching() should be a noop here but we call it just in case we - // missed a blur event somehow. - stopWatchingForValueChange(); - startWatchingForValueChange(target, targetInst); - } else if (topLevelType === 'topBlur') { - stopWatchingForValueChange(); - } -} - -// For IE8 and IE9. -function getTargetInstForInputEventPolyfill(topLevelType, targetInst, nativeEvent) { - if (topLevelType === 'topSelectionChange' || topLevelType === 'topKeyUp' || topLevelType === 'topKeyDown') { - // On the selectionchange event, the target is just document which isn't - // helpful for us so just check activeElement instead. - // - // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire - // propertychange on the first input event after setting `value` from a - // script and fires only keydown, keypress, keyup. Catching keyup usually - // gets it and catching keydown lets us fire an event for the first - // keystroke if user does a key repeat (it'll be a little delayed: right - // before the second keystroke). Other input methods (e.g., paste) seem to - // fire selectionchange normally. - return getInstIfValueChanged(activeElementInst, nativeEvent); - } -} - -/** - * SECTION: handle `click` event - */ -function shouldUseClickEvent(elem) { - // Use the `click` event to detect changes to checkbox and radio inputs. - // This approach works across all browsers, whereas `change` does not fire - // until `blur` in IE8. - var nodeName = elem.nodeName; - return nodeName && nodeName.toLowerCase() === 'input' && (elem.type === 'checkbox' || elem.type === 'radio'); -} - -function getTargetInstForClickEvent(topLevelType, targetInst, nativeEvent) { - if (topLevelType === 'topClick') { - return getInstIfValueChanged(targetInst, nativeEvent); - } -} - -function getTargetInstForInputOrChangeEvent(topLevelType, targetInst, nativeEvent) { - if (topLevelType === 'topInput' || topLevelType === 'topChange') { - return getInstIfValueChanged(targetInst, nativeEvent); - } -} - -function handleControlledInputBlur(inst, node) { - // TODO: In IE, inst is occasionally null. Why? - if (inst == null) { - return; - } - - // Fiber and ReactDOM keep wrapper state in separate places - var state = inst._wrapperState || node._wrapperState; - - if (!state || !state.controlled || node.type !== 'number') { - return; - } - - // If controlled, assign the value attribute to the current value on blur - var value = '' + node.value; - if (node.getAttribute('value') !== value) { - node.setAttribute('value', value); - } -} - -/** - * This plugin creates an `onChange` event that normalizes change events - * across form elements. This event fires at a time when it's possible to - * change the element's value without seeing a flicker. - * - * Supported elements are: - * - input (see `isTextInputElement`) - * - textarea - * - select - */ -var ChangeEventPlugin = { - eventTypes: eventTypes, - - _allowSimulatedPassThrough: true, - _isInputEventSupported: isInputEventSupported, - - extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { - var targetNode = targetInst ? ReactDOMComponentTree.getNodeFromInstance(targetInst) : window; - - var getTargetInstFunc, handleEventFunc; - if (shouldUseChangeEvent(targetNode)) { - if (doesChangeEventBubble) { - getTargetInstFunc = getTargetInstForChangeEvent; - } else { - handleEventFunc = handleEventsForChangeEventIE8; - } - } else if (isTextInputElement(targetNode)) { - if (isInputEventSupported) { - getTargetInstFunc = getTargetInstForInputOrChangeEvent; - } else { - getTargetInstFunc = getTargetInstForInputEventPolyfill; - handleEventFunc = handleEventsForInputEventPolyfill; - } - } else if (shouldUseClickEvent(targetNode)) { - getTargetInstFunc = getTargetInstForClickEvent; - } - - if (getTargetInstFunc) { - var inst = getTargetInstFunc(topLevelType, targetInst, nativeEvent); - if (inst) { - var event = createAndAccumulateChangeEvent(inst, nativeEvent, nativeEventTarget); - return event; - } - } - - if (handleEventFunc) { - handleEventFunc(topLevelType, targetNode, targetInst); - } - - // When blurring, set the value attribute for number inputs - if (topLevelType === 'topBlur') { - handleControlledInputBlur(targetInst, targetNode); - } - } -}; - -module.exports = ChangeEventPlugin;
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