58 lines
2.5 KiB
JavaScript
58 lines
2.5 KiB
JavaScript
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'use strict';
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require('../utils/dataTransfer/Clipboard.js');
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var getWindow = require('../utils/misc/getWindow.js');
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var UI = require('./UI.js');
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const TrackChanges = Symbol('Track programmatic changes for React workaround');
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// When the input event happens in the browser, React executes all event handlers
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// and if they change state of a controlled value, nothing happens.
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// But when we trigger the event handlers in test environment with React@17,
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// the changes are rolled back before the state update is applied.
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// This results in a reset cursor.
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// There might be a better way to work around if we figure out
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// why the batched update is executed differently in our test environment.
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function isReact17Element(element) {
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return Object.getOwnPropertyNames(element).some((k)=>k.startsWith('__react')) && getWindow.getWindow(element).REACT_VERSION === 17;
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}
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function startTrackValue(element) {
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if (!isReact17Element(element)) {
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return;
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}
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element[TrackChanges] = {
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previousValue: String(element.value),
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tracked: []
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};
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}
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function trackOrSetValue(element, v) {
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var _element_TrackChanges_tracked, _element_TrackChanges;
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(_element_TrackChanges = element[TrackChanges]) === null || _element_TrackChanges === undefined ? undefined : (_element_TrackChanges_tracked = _element_TrackChanges.tracked) === null || _element_TrackChanges_tracked === undefined ? undefined : _element_TrackChanges_tracked.push(v);
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if (!element[TrackChanges]) {
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UI.setUIValueClean(element);
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UI.setUISelection(element, {
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focusOffset: v.length
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});
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}
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}
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function commitValueAfterInput(element, cursorOffset) {
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var _changes_tracked;
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const changes = element[TrackChanges];
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element[TrackChanges] = undefined;
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if (!(changes === null || changes === undefined ? undefined : (_changes_tracked = changes.tracked) === null || _changes_tracked === undefined ? undefined : _changes_tracked.length)) {
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return;
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}
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const isJustReactStateUpdate = changes.tracked.length === 2 && changes.tracked[0] === changes.previousValue && changes.tracked[1] === element.value;
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if (!isJustReactStateUpdate) {
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UI.setUIValueClean(element);
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}
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if (UI.hasUISelection(element)) {
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UI.setUISelection(element, {
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focusOffset: isJustReactStateUpdate ? cursorOffset : element.value.length
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});
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}
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}
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exports.commitValueAfterInput = commitValueAfterInput;
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exports.startTrackValue = startTrackValue;
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exports.trackOrSetValue = trackOrSetValue;
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