1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
/* eslint-env browser */
"use strict";
// A box with a start and a end pane, separated by a dragable splitter that
// allows the user to resize the relative widths of the panes.
//
// +-----------------------+---------------------+
// | | |
// | | |
// | S |
// | Start Pane p End Pane |
// | l |
// | i |
// | t |
// | t |
// | e |
// | r |
// | | |
// | | |
// +-----------------------+---------------------+
const {
DOM: dom,
createClass,
PropTypes,
} = require("devtools/client/shared/vendor/react");
const { assert } = require("devtools/shared/DevToolsUtils");
module.exports = createClass({
displayName: "HSplitBox",
propTypes: {
// The contents of the start pane.
start: PropTypes.any.isRequired,
// The contents of the end pane.
end: PropTypes.any.isRequired,
// The relative width of the start pane, expressed as a number between 0 and
// 1. The relative width of the end pane is 1 - startWidth. For example,
// with startWidth = .5, both panes are of equal width; with startWidth =
// .25, the start panel will take up 1/4 width and the end panel will take
// up 3/4 width.
startWidth: PropTypes.number,
// A minimum css width value for the start and end panes.
minStartWidth: PropTypes.any,
minEndWidth: PropTypes.any,
// A callback fired when the user drags the splitter to resize the relative
// pane widths. The function is passed the startWidth value that would put
// the splitter underneath the users mouse.
onResize: PropTypes.func.isRequired,
},
getDefaultProps() {
return {
startWidth: 0.5,
minStartWidth: "20px",
minEndWidth: "20px",
};
},
getInitialState() {
return {
mouseDown: false
};
},
componentDidMount() {
document.defaultView.top.addEventListener("mouseup", this._onMouseUp,
false);
document.defaultView.top.addEventListener("mousemove", this._onMouseMove,
false);
},
componentWillUnmount() {
document.defaultView.top.removeEventListener("mouseup", this._onMouseUp,
false);
document.defaultView.top.removeEventListener("mousemove", this._onMouseMove,
false);
},
_onMouseDown(event) {
if (event.button !== 0) {
return;
}
this.setState({ mouseDown: true });
event.preventDefault();
},
_onMouseUp(event) {
if (event.button !== 0 || !this.state.mouseDown) {
return;
}
this.setState({ mouseDown: false });
event.preventDefault();
},
_onMouseMove(event) {
if (!this.state.mouseDown) {
return;
}
const rect = this.refs.box.getBoundingClientRect();
const { left, right } = rect;
const width = right - left;
const relative = event.clientX - left;
this.props.onResize(relative / width);
event.preventDefault();
},
render() {
/* eslint-disable no-shadow */
const { start, end, startWidth, minStartWidth, minEndWidth } = this.props;
assert(startWidth => 0 && startWidth <= 1,
"0 <= this.props.startWidth <= 1");
/* eslint-enable */
return dom.div(
{
className: "h-split-box",
ref: "box",
},
dom.div(
{
className: "h-split-box-pane",
style: { flex: startWidth, minWidth: minStartWidth },
},
start
),
dom.div({
className: "devtools-side-splitter",
onMouseDown: this._onMouseDown,
}),
dom.div(
{
className: "h-split-box-pane",
style: { flex: 1 - startWidth, minWidth: minEndWidth },
},
end
)
);
}
});
|
