react-native/Libraries/CustomComponents/Navigator/NavigatorInterceptor.js

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/**
* Copyright (c) 2015, Facebook, Inc. All rights reserved.
*
* Facebook, Inc. (Facebook) owns all right, title and interest, including
* all intellectual property and other proprietary rights, in and to the React
* Native CustomComponents software (the Software). Subject to your
* compliance with these terms, you are hereby granted a non-exclusive,
* worldwide, royalty-free copyright license to (1) use and copy the Software;
* and (2) reproduce and distribute the Software as part of your own software
* (Your Software). Facebook reserves all rights not expressly granted to
* you in this license agreement.
*
* THE SOFTWARE AND DOCUMENTATION, IF ANY, ARE PROVIDED "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES (INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE) ARE DISCLAIMED.
* IN NO EVENT SHALL FACEBOOK OR ITS AFFILIATES, OFFICERS, DIRECTORS OR
* EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @providesModule NavigatorInterceptor
*/
'use strict';
var React = require('React');
var getNavigatorContext = require('getNavigatorContext');
var NavigatorInterceptor = React.createClass({
contextTypes: {
navigator: React.PropTypes.object,
},
componentWillMount: function() {
this.navigator = getNavigatorContext(this);
},
componentDidMount: function() {
this.navigator.setHandler(this._navigatorHandleRequest);
},
childContextTypes: {
navigator: React.PropTypes.object,
},
getChildContext: function() {
return {
navigator: {
...this.navigator,
setHandler: (handler) => {
this._childNavigationHandler = handler;
},
}
};
},
componentWillUnmount: function() {
this.navigator.setHandler(null);
},
_navigatorHandleRequest: function(action, arg1, arg2) {
if (this._interceptorHandle(action, arg1, arg2)) {
return true;
}
if (this._childNavigationHandler && this._childNavigationHandler(action, arg1, arg2)) {
return true;
}
},
_interceptorHandle: function(action, arg1, arg2) {
if (this.props.onRequest && this.props.onRequest(action, arg1, arg2)) {
return true;
}
switch (action) {
case 'pop':
return this.props.onPopRequest && this.props.onPopRequest(action, arg1, arg2);
case 'push':
return this.props.onPushRequest && this.props.onPushRequest(action, arg1, arg2);
default:
return false;
}
},
render: function() {
return this.props.children;
},
});
module.exports = NavigatorInterceptor;