ecomp-portal-FE/client/bower_components/jqTree/src/mouse.widget.coffee

   1 ###
   2 This widget does the same a the mouse widget in jqueryui.
   3 ###
   4
   5 SimpleWidget = require './simple.widget'
   6
   7
   8 $ = jQuery
   9
  10
  11 class MouseWidget extends SimpleWidget
  12     @is_mouse_handled = false
  13
  14     _init: ->
  15         @$el.bind('mousedown.mousewidget', $.proxy(@_mouseDown, this))
  16         @$el.bind('touchstart.mousewidget', $.proxy(@_touchStart, this))
  17
  18         @is_mouse_started = false
  19         @mouse_delay = 0
  20         @_mouse_delay_timer = null
  21         @_is_mouse_delay_met = true
  22         @mouse_down_info = null
  23
  24     _deinit: ->
  25         @$el.unbind('mousedown.mousewidget')
  26         @$el.unbind('touchstart.mousewidget')
  27
  28         $document = $(document)
  29         $document.unbind('mousemove.mousewidget')
  30         $document.unbind('mouseup.mousewidget')
  31
  32     _mouseDown: (e) ->
  33         # Is left mouse button?
  34         if e.which != 1
  35             return
  36
  37         result = @_handleMouseDown(
  38             e,
  39             @_getPositionInfo(e)
  40         )
  41
  42         if result
  43             e.preventDefault()
  44
  45         return result
  46
  47     _handleMouseDown: (e, position_info) ->
  48         # Don't let more than one widget handle mouseStart
  49         if MouseWidget.is_mouse_handled
  50             return
  51
  52         # We may have missed mouseup (out of window)
  53         if @is_mouse_started
  54             @_handleMouseUp(position_info)
  55
  56         @mouse_down_info = position_info
  57
  58         if not @_mouseCapture(position_info)
  59             return
  60
  61         @_handleStartMouse()
  62
  63         @is_mouse_handled = true
  64         return true
  65
  66     _handleStartMouse: ->
  67         $document = $(document)
  68         $document.bind('mousemove.mousewidget', $.proxy(@_mouseMove, this))
  69         $document.bind('touchmove.mousewidget', $.proxy(@_touchMove, this))
  70         $document.bind('mouseup.mousewidget', $.proxy(@_mouseUp, this))
  71         $document.bind('touchend.mousewidget', $.proxy(@_touchEnd, this))
  72
  73         if @mouse_delay
  74             @_startMouseDelayTimer()
  75
  76     _startMouseDelayTimer: ->
  77         if @_mouse_delay_timer
  78             clearTimeout(@_mouse_delay_timer)
  79
  80         @_mouse_delay_timer = setTimeout(
  81             =>
  82                 @_is_mouse_delay_met = true
  83             , @mouse_delay
  84         )
  85
  86         @_is_mouse_delay_met = false
  87
  88     _mouseMove: (e) ->
  89         return @_handleMouseMove(
  90             e,
  91             @_getPositionInfo(e)
  92         )
  93
  94     _handleMouseMove: (e, position_info) ->
  95         if @is_mouse_started
  96             @_mouseDrag(position_info)
  97             return e.preventDefault()
  98
  99         if @mouse_delay and not @_is_mouse_delay_met
 100             return true
 101
 102         @is_mouse_started = @_mouseStart(@mouse_down_info) != false
 103
 104         if @is_mouse_started
 105             @_mouseDrag(position_info)
 106         else
 107             @_handleMouseUp(position_info)
 108
 109         return not @is_mouse_started
 110
 111     _getPositionInfo: (e) ->
 112         return {
 113             page_x: e.pageX,
 114             page_y: e.pageY,
 115             target: e.target,
 116             original_event: e
 117         }
 118
 119     _mouseUp: (e) ->
 120         return @_handleMouseUp(
 121             @_getPositionInfo(e)
 122         )
 123
 124     _handleMouseUp: (position_info) ->
 125         $document = $(document)
 126         $document.unbind('mousemove.mousewidget')
 127         $document.unbind('touchmove.mousewidget')
 128         $document.unbind('mouseup.mousewidget')
 129         $document.unbind('touchend.mousewidget')
 130
 131         if @is_mouse_started
 132             @is_mouse_started = false
 133             @_mouseStop(position_info)
 134
 135         return
 136
 137     _mouseCapture: (position_info) ->
 138         return true
 139
 140     _mouseStart: (position_info) ->
 141         null
 142
 143     _mouseDrag: (position_info) ->
 144         null
 145
 146     _mouseStop: (position_info) ->
 147         null
 148
 149     setMouseDelay: (mouse_delay) ->
 150         @mouse_delay = mouse_delay
 151
 152     _touchStart: (e) ->
 153         if e.originalEvent.touches.length > 1
 154             return
 155
 156         touch = e.originalEvent.changedTouches[0]
 157
 158         return @_handleMouseDown(
 159             e,
 160             @_getPositionInfo(touch)
 161         )
 162
 163     _touchMove: (e) ->
 164         if e.originalEvent.touches.length > 1
 165             return
 166
 167         touch = e.originalEvent.changedTouches[0]
 168
 169         return @_handleMouseMove(
 170             e,
 171             @_getPositionInfo(touch)
 172         )
 173
 174     _touchEnd: (e) ->
 175         if e.originalEvent.touches.length > 1
 176             return
 177
 178         touch = e.originalEvent.changedTouches[0]
 179
 180         return @_handleMouseUp(
 181             @_getPositionInfo(touch)
 182         )
 183
 184 module.exports = MouseWidget