js.todoItem.jsx Maven / Gradle / Ivy
/*
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
*
*/
/*jshint quotmark: false */
/*jshint white: false */
/*jshint trailing: false */
/*jshint newcap: false */
/*global React */
var app = app || {};
(function () {
'use strict';
var ESCAPE_KEY = 27;
var ENTER_KEY = 13;
app.TodoItem = React.createClass({
handleSubmit: function (event) {
var val = this.state.editText.trim();
if (val) {
this.props.onSave(val);
this.setState({editText: val});
} else {
this.props.onDestroy();
}
},
handleEdit: function () {
this.props.onEdit();
this.setState({editText: this.props.todo.title});
},
handleKeyDown: function (event) {
if (event.which === ESCAPE_KEY) {
this.setState({editText: this.props.todo.title});
this.props.onCancel(event);
} else if (event.which === ENTER_KEY) {
this.handleSubmit(event);
}
},
handleChange: function (event) {
this.setState({editText: event.target.value});
},
getInitialState: function () {
return {editText: this.props.todo.title};
},
/**
* This is a completely optional performance enhancement that you can
* implement on any React component. If you were to delete this method
* the app would still work correctly (and still be very performant!), we
* just use it as an example of how little code it takes to get an order
* of magnitude performance improvement.
*/
shouldComponentUpdate: function (nextProps, nextState) {
return (
nextProps.todo !== this.props.todo ||
nextProps.editing !== this.props.editing ||
nextState.editText !== this.state.editText
);
},
/**
* Safely manipulate the DOM after updating the state when invoking
* `this.props.onEdit()` in the `handleEdit` method above.
* For more info refer to notes at https://facebook.github.io/react/docs/component-api.html#setstate
* and https://facebook.github.io/react/docs/component-specs.html#updating-componentdidupdate
*/
componentDidUpdate: function (prevProps) {
if (!prevProps.editing && this.props.editing) {
var node = this.refs.editField.getDOMNode();
node.focus();
node.setSelectionRange(node.value.length, node.value.length);
}
},
render: function () {
return (
);
}
});
})();