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1 change: 1 addition & 0 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ npm install react-ui-tree --save
tree={this.state.tree} // tree object
onChange={this.handleChange} // onChange(tree) tree object changed
renderNode={this.renderNode} // renderNode(node) return react element
static={false} //static trees cannot have their structure modified
/>

// a sample tree object
Expand Down
154 changes: 78 additions & 76 deletions dist/react-ui-tree.js
Original file line number Diff line number Diff line change
Expand Up @@ -114,87 +114,89 @@ module.exports = React.createClass({

// oh
drag: function drag(e) {
if (this._start) {
this.setState({
dragging: this.dragging
});
this._start = false;
}

var tree = this.state.tree;
var dragging = this.state.dragging;
var paddingLeft = this.props.paddingLeft;
var newIndex = null;
var index = tree.getIndex(dragging.id);
var collapsed = index.node.collapsed;

var _startX = this._startX;
var _startY = this._startY;
var _offsetX = this._offsetX;
var _offsetY = this._offsetY;

var pos = {
x: _startX + e.clientX - _offsetX,
y: _startY + e.clientY - _offsetY
};
dragging.x = pos.x;
dragging.y = pos.y;

var diffX = dragging.x - paddingLeft / 2 - (index.left - 2) * paddingLeft;
var diffY = dragging.y - dragging.h / 2 - (index.top - 2) * dragging.h;

if (diffX < 0) {
// left
if (index.parent && !index.next) {
newIndex = tree.move(index.id, index.parent, 'after');
if (!this.props.static) {
if (this._start) {
this.setState({
dragging: this.dragging
});
this._start = false;
}
} else if (diffX > paddingLeft) {
// right
if (index.prev && !tree.getIndex(index.prev).node.collapsed) {
newIndex = tree.move(index.id, index.prev, 'append');
}
}

if (newIndex) {
index = newIndex;
newIndex.node.collapsed = collapsed;
dragging.id = newIndex.id;
}

if (diffY < 0) {
// up
var above = tree.getNodeByTop(index.top - 1);
newIndex = tree.move(index.id, above.id, 'before');
} else if (diffY > dragging.h) {
// down
if (index.next) {
var below = tree.getIndex(index.next);
if (below.children && below.children.length && !below.node.collapsed) {
newIndex = tree.move(index.id, index.next, 'prepend');
} else {
newIndex = tree.move(index.id, index.next, 'after');

var tree = this.state.tree;
var dragging = this.state.dragging;
var paddingLeft = this.props.paddingLeft;
var newIndex = null;
var index = tree.getIndex(dragging.id);
var collapsed = index.node.collapsed;

var _startX = this._startX;
var _startY = this._startY;
var _offsetX = this._offsetX;
var _offsetY = this._offsetY;

var pos = {
x: _startX + e.clientX - _offsetX,
y: _startY + e.clientY - _offsetY
};
dragging.x = pos.x;
dragging.y = pos.y;

var diffX = dragging.x - paddingLeft / 2 - (index.left - 2) * paddingLeft;
var diffY = dragging.y - dragging.h / 2 - (index.top - 2) * dragging.h;

if (diffX < 0) {
// left
if (index.parent && !index.next) {
newIndex = tree.move(index.id, index.parent, 'after');
}
} else if (diffX > paddingLeft) {
// right
if (index.prev) {
newIndex = tree.move(index.id, index.prev, 'append');
}
} else {
var below = tree.getNodeByTop(index.top + index.height);
if (below && below.parent !== index.id) {
if (below.children && below.children.length) {
newIndex = tree.move(index.id, below.id, 'prepend');
}

if (newIndex) {
index = newIndex;
newIndex.node.collapsed = collapsed;
dragging.id = newIndex.id;
}

if (diffY < 0) {
// up
var above = tree.getNodeByTop(index.top - 1);
newIndex = tree.move(index.id, above.id, 'before');
} else if (diffY > dragging.h) {
// down
if (index.next) {
var below = tree.getIndex(index.next);
if (below.children && below.children.length && !below.node.collapsed) {
newIndex = tree.move(index.id, index.next, 'prepend');
} else {
newIndex = tree.move(index.id, below.id, 'after');
newIndex = tree.move(index.id, index.next, 'after');
}
} else {
var below = tree.getNodeByTop(index.top + index.height);
if (below && below.parent !== index.id) {
if (below.children && below.children.length) {
newIndex = tree.move(index.id, below.id, 'prepend');
} else {
newIndex = tree.move(index.id, below.id, 'after');
}
}
}
}
}

if (newIndex) {
newIndex.node.collapsed = collapsed;
dragging.id = newIndex.id;
}

this.setState({
tree: tree,
dragging: dragging
});

if (newIndex) {
newIndex.node.collapsed = collapsed;
dragging.id = newIndex.id;
}

this.setState({
tree: tree,
dragging: dragging
});
};
},

dragEnd: function dragEnd() {
Expand Down Expand Up @@ -231,4 +233,4 @@ module.exports = React.createClass({

this.change(tree);
}
});
});