80 lines
2.2 KiB
JavaScript
80 lines
2.2 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule ReactNativeTextComponent
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*/
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'use strict';
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var ReactNativeTagHandles = require('ReactNativeTagHandles');
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var RCTUIManager = require('NativeModules').UIManager;
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var assign = require('Object.assign');
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var invariant = require('invariant');
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var ReactNativeTextComponent = function(props) {
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// This constructor and its argument is currently used by mocks.
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};
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assign(ReactNativeTextComponent.prototype, {
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construct: function(text) {
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// This is really a ReactText (ReactNode), not a ReactElement
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this._currentElement = text;
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this._stringText = '' + text;
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this._rootNodeID = null;
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},
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mountComponent: function(rootID, transaction, context) {
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invariant(
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context.isInAParentText,
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'RawText "' + this._stringText + '" must be wrapped in an explicit ' +
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'<Text> component.'
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);
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this._rootNodeID = rootID;
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var tag = ReactNativeTagHandles.allocateTag();
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var nativeTopRootID = ReactNativeTagHandles.getNativeTopRootIDFromNodeID(rootID);
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RCTUIManager.createView(
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tag,
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'RCTRawText',
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nativeTopRootID ? ReactNativeTagHandles.rootNodeIDToTag[nativeTopRootID] : null,
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{text: this._stringText}
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);
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return {
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rootNodeID: rootID,
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tag: tag,
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};
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},
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receiveComponent: function(nextText, transaction, context) {
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if (nextText !== this._currentElement) {
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this._currentElement = nextText;
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var nextStringText = '' + nextText;
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if (nextStringText !== this._stringText) {
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this._stringText = nextStringText;
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RCTUIManager.updateView(
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ReactNativeTagHandles.mostRecentMountedNodeHandleForRootNodeID(
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this._rootNodeID
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),
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'RCTRawText',
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{text: this._stringText}
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);
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}
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}
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},
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unmountComponent: function() {
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this._currentElement = null;
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this._stringText = null;
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this._rootNodeID = null;
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}
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});
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module.exports = ReactNativeTextComponent;
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