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commentbox.js
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commentbox.js
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/**
* This file provided by Facebook is for non-commercial testing and evaluation
* purposes only. Facebook reserves all rights not expressly granted.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var React = require('react');
var ReactRedux = require('react-redux');
var marked = require('marked');
var Comment = React.createClass({
rawMarkup: function() {
var rawMarkup = marked(this.props.children.toString(), {sanitize: true});
return { __html: rawMarkup };
},
render: function() {
return (
<div className="comment">
<h2 className="commentAuthor">
{this.props.author}
</h2>
<span dangerouslySetInnerHTML={this.rawMarkup()} />
</div>
);
}
});
var CommentBox = React.createClass({
loadCommentsFromServer: function() {
$.ajax({
url: this.props.url,
dataType: 'json',
cache: false,
success: function(data) {
this.props.setComments(data);
}.bind(this),
error: function(xhr, status, err) {
console.error(this.props.url, status, err.toString());
}.bind(this)
});
},
handleCommentSubmit: function(comment) {
var comments = this.props.data;
// Optimistically set an id on the new comment. It will be replaced by an
// id generated by the server. In a production application you would likely
// not use Date.now() for this and would have a more robust system in place.
this.props.addComment(comment);
$.ajax({
url: this.props.url,
dataType: 'json',
type: 'POST',
data: comment,
success: function(data) {
this.props.setComments(data);
}.bind(this),
error: function(xhr, status, err) {
this.props.setComments(comments);
}.bind(this)
});
},
componentDidMount: function() {
this.loadCommentsFromServer();
setInterval(this.loadCommentsFromServer, this.props.pollInterval);
},
render: function() {
return (
<div className="commentBox">
<h1>Comments</h1>
<CommentList />
<CommentForm onCommentSubmit={this.handleCommentSubmit} />
</div>
);
}
});
var CommentList = React.createClass({
render: function() {
var commentNodes = this.props.data.map(function(comment) {
return (
<Comment author={comment.author} key={comment.id}>
{comment.text}
</Comment>
);
});
return (
<div className="commentList">
{commentNodes}
</div>
);
}
});
var CommentForm = React.createClass({
getInitialState: function() {
return {author: '', text: ''};
},
handleAuthorChange: function(e) {
this.setState({author: e.target.value});
},
handleTextChange: function(e) {
this.setState({text: e.target.value});
},
handleSubmit: function(e) {
e.preventDefault();
var author = this.state.author.trim();
var text = this.state.text.trim();
if (!text || !author) {
return;
}
this.props.onCommentSubmit({author: author, text: text});
this.setState({author: '', text: ''});
},
render: function() {
return (
<form className="commentForm" method="post" action={this.props.url} onSubmit={this.handleSubmit}>
<input
type="text"
name="author"
placeholder="Your name"
value={this.state.author}
onChange={this.handleAuthorChange}
/>
<input
type="text"
name="text"
placeholder="Say something..."
value={this.state.text}
onChange={this.handleTextChange}
/>
<input type="submit" value="Post" />
</form>
);
}
});
var CommentBoxState = function(state) {
return {
data: state.data,
url: state.url,
pollInterval: state.pollInterval
}
}
var CommentBoxDispatch = function(dispatch) {
return {
addComment: function(comment) {
comment.id = Date.now();
dispatch({
type: 'add_comment',
comment: comment,
})
},
setComments: function(data) {
dispatch({
type: 'set_comments',
data: data
})
}
}
}
var CommentListState = function(state) {
return {
data: state.data
}
}
var CommentFormState = function(state) {
return {
url: state.url
}
}
var connect = ReactRedux.connect;
CommentBox = connect(
CommentBoxState,
CommentBoxDispatch
)(CommentBox)
CommentList = connect(
CommentListState
)(CommentList)
CommentForm = connect(
CommentFormState
)(CommentForm)
module.exports = CommentBox;