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VILLASweb/src/visualization/dropzone.js
Sonja Happ f468b44557 Refactoring of js code base:
- Grouping js files based on the elements of the data model instead of parent js class
- All js files providing functionality for one element of the data model are now in one folder; this makes is easier to implement changes for one element in all affected files/ classes
- js files which are common to multiple elements are in the common folder
- The new structure is more in alignment with the new Go backend code base structure
- This commit does not contain any changes in functionality of the frontend
2019-08-20 14:46:33 +02:00

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2.5 KiB
JavaScript

/**
* File: dropzone.js
* Author: Markus Grigull <mgrigull@eonerc.rwth-aachen.de>
* Date: 02.03.2017
*
* This file is part of VILLASweb.
*
* VILLASweb is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* VILLASweb is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with VILLASweb. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
import React from 'react';
import { DropTarget } from 'react-dnd';
import classNames from 'classnames';
const dropzoneTarget = {
drop(props, monitor, component) {
// get drop position
var position = monitor.getSourceClientOffset();
var dropzoneRect = component.wrapper.getBoundingClientRect();
position.x -= dropzoneRect.left;
position.y -= dropzoneRect.top;
// Z-Index is one more the top most children
let foundZ = props.children.reduce( (maxZ, currentChildren) => {
if (currentChildren.props != null) {
// Is there a simpler way? Is not easy to expose a getter in a Container.create(Component)
let widget = currentChildren.props.data;
if (widget && widget.z) {
if (widget.z > maxZ) {
return widget.z;
}
}
}
return maxZ;
}, 0);
position.z = foundZ >= 100? foundZ : ++foundZ;
props.onDrop(monitor.getItem(), position);
}
};
function collect(connect, monitor) {
return {
connectDropTarget: connect.dropTarget(),
isOver: monitor.isOver(),
canDrop: monitor.canDrop()
};
}
class Dropzone extends React.Component {
render() {
var toolboxClass = classNames({
'box-content': true,
'toolbox-dropzone': true,
'toolbox-dropzone-active': this.props.isOver && this.props.canDrop && this.props.editing,
'toolbox-dropzone-editing': this.props.editing
});
return this.props.connectDropTarget(
<div className={toolboxClass} style={{ height: this.props.height}} ref={wrapper => this.wrapper = wrapper}>
{this.props.children}
</div>
);
}
}
export default DropTarget('widget', dropzoneTarget, collect)(Dropzone);