blob: c8c17e7c29f1703a33009ecb9c62de695a8c41da (
plain)
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
|
$ = jQuery
class KeyHandler
LEFT = 37
UP = 38
RIGHT = 39
DOWN = 40
constructor: (tree_widget) ->
@tree_widget = tree_widget
if tree_widget.options.keyboardSupport
$(document).bind('keydown.jqtree', $.proxy(@handleKeyDown, this))
deinit: ->
$(document).unbind('keydown.jqtree')
moveDown: ->
node = @tree_widget.getSelectedNode()
if node
return @selectNode(node.getNextNode())
else
return false
moveUp: ->
node = @tree_widget.getSelectedNode()
if node
return @selectNode(node.getPreviousNode())
else
return false
moveRight: ->
node = @tree_widget.getSelectedNode()
if not node
return true
else if not node.isFolder()
return true
else
# folder node
if node.is_open
# Right moves to the first child of an open node
return @selectNode(node.getNextNode())
else
# Right expands a closed node
@tree_widget.openNode(node)
return false
moveLeft: ->
node = @tree_widget.getSelectedNode()
if not node
return true
else if node.isFolder() and node.is_open
# Left on an open node closes the node
@tree_widget.closeNode(node)
return false
else
# Left on a closed or end node moves focus to the node's parent
return @selectNode(node.getParent())
handleKeyDown: (e) ->
if not @tree_widget.options.keyboardSupport
return true
if $(document.activeElement).is('textarea,input,select')
return true
if not @tree_widget.getSelectedNode()
return true
key = e.which
switch key
when DOWN
return @moveDown()
when UP
return @moveUp()
when RIGHT
return @moveRight()
when LEFT
return @moveLeft()
return true
selectNode: (node) =>
if not node
return true
else
@tree_widget.selectNode(node)
if (
@tree_widget.scroll_handler and
(not @tree_widget.scroll_handler.isScrolledIntoView($(node.element).find('.jqtree-element')))
)
@tree_widget.scrollToNode(node)
return false
module.exports = KeyHandler
|
