Java example source code file (index.jsx)

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Java - Java tags/keywords

dropzone

The index.jsx Java example source code

/*
 *
 *  * 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.
 *
 */

var Dropzone = React.createClass({
  getInitialState: function() {
    return {
      isDragActive: false
    }
  },

  propTypes: {
    onDrop: React.PropTypes.func.isRequired,
    size: React.PropTypes.number,
    style: React.PropTypes.object
  },

  onDragLeave: function(e) {
    this.setState({
      isDragActive: false
    });
  },

  onDragOver: function(e) {
    e.preventDefault();
    e.dataTransfer.dropEffect = "copy";

    this.setState({
      isDragActive: true
    });
  },

  onDrop: function(e) {
    e.preventDefault();

    this.setState({
      isDragActive: false
    });

    var files;
    if (e.dataTransfer) {
      files = e.dataTransfer.files;
    } else if (e.target) {
      files = e.target.files;
    }

    if (this.props.onDrop) {
      files = Array.prototype.slice.call(files);
      this.props.onDrop(files);
    }
  },

  onClick: function () {
    this.refs.fileInput.getDOMNode().click();
  },

  render: function() {

    var className = this.props.className || 'dropzone';
    if (this.state.isDragActive) {
      className += ' active';
    }
    var style = this.props.style || {
      width: this.props.size || 100,
      height: this.props.size || 100,
      borderStyle: this.state.isDragActive ? "solid" : "dashed"
    };

    if (this.props.className) {
      style = this.props.style;
    }

    return (
      <div className={className} style={style} onClick={this.onClick} onDragLeave={this.onDragLeave} onDragOver={this.onDragOver} onDrop={this.onDrop}>
        <input style={{display: 'none' }} type='file' multiple ref='fileInput' onChange={this.onDrop} />
        {this.props.children}
      </div>
    );
  }

});

module.exports = Dropzone;