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|
###
This widget does the same a the mouse widget in jqueryui.
###
SimpleWidget = require './simple.widget'
$ = jQuery
class MouseWidget extends SimpleWidget
@is_mouse_handled = false
_init: ->
@$el.bind('mousedown.mousewidget', $.proxy(@_mouseDown, this))
@$el.bind('touchstart.mousewidget', $.proxy(@_touchStart, this))
@is_mouse_started = false
@mouse_delay = 0
@_mouse_delay_timer = null
@_is_mouse_delay_met = true
@mouse_down_info = null
_deinit: ->
@$el.unbind('mousedown.mousewidget')
@$el.unbind('touchstart.mousewidget')
$document = $(document)
$document.unbind('mousemove.mousewidget')
$document.unbind('mouseup.mousewidget')
_mouseDown: (e) ->
# Is left mouse button?
if e.which != 1
return
result = @_handleMouseDown(
e,
@_getPositionInfo(e)
)
if result
e.preventDefault()
return result
_handleMouseDown: (e, position_info) ->
# Don't let more than one widget handle mouseStart
if MouseWidget.is_mouse_handled
return
# We may have missed mouseup (out of window)
if @is_mouse_started
@_handleMouseUp(position_info)
@mouse_down_info = position_info
if not @_mouseCapture(position_info)
return
@_handleStartMouse()
@is_mouse_handled = true
return true
_handleStartMouse: ->
$document = $(document)
$document.bind('mousemove.mousewidget', $.proxy(@_mouseMove, this))
$document.bind('touchmove.mousewidget', $.proxy(@_touchMove, this))
$document.bind('mouseup.mousewidget', $.proxy(@_mouseUp, this))
$document.bind('touchend.mousewidget', $.proxy(@_touchEnd, this))
if @mouse_delay
@_startMouseDelayTimer()
_startMouseDelayTimer: ->
if @_mouse_delay_timer
clearTimeout(@_mouse_delay_timer)
@_mouse_delay_timer = setTimeout(
=>
@_is_mouse_delay_met = true
, @mouse_delay
)
@_is_mouse_delay_met = false
_mouseMove: (e) ->
return @_handleMouseMove(
e,
@_getPositionInfo(e)
)
_handleMouseMove: (e, position_info) ->
if @is_mouse_started
@_mouseDrag(position_info)
return e.preventDefault()
if @mouse_delay and not @_is_mouse_delay_met
return true
@is_mouse_started = @_mouseStart(@mouse_down_info) != false
if @is_mouse_started
@_mouseDrag(position_info)
else
@_handleMouseUp(position_info)
return not @is_mouse_started
_getPositionInfo: (e) ->
return {
page_x: e.pageX,
page_y: e.pageY,
target: e.target,
original_event: e
}
_mouseUp: (e) ->
return @_handleMouseUp(
@_getPositionInfo(e)
)
_handleMouseUp: (position_info) ->
$document = $(document)
$document.unbind('mousemove.mousewidget')
$document.unbind('touchmove.mousewidget')
$document.unbind('mouseup.mousewidget')
$document.unbind('touchend.mousewidget')
if @is_mouse_started
@is_mouse_started = false
@_mouseStop(position_info)
return
_mouseCapture: (position_info) ->
return true
_mouseStart: (position_info) ->
null
_mouseDrag: (position_info) ->
null
_mouseStop: (position_info) ->
null
setMouseDelay: (mouse_delay) ->
@mouse_delay = mouse_delay
_touchStart: (e) ->
if e.originalEvent.touches.length > 1
return
touch = e.originalEvent.changedTouches[0]
return @_handleMouseDown(
e,
@_getPositionInfo(touch)
)
_touchMove: (e) ->
if e.originalEvent.touches.length > 1
return
touch = e.originalEvent.changedTouches[0]
return @_handleMouseMove(
e,
@_getPositionInfo(touch)
)
_touchEnd: (e) ->
if e.originalEvent.touches.length > 1
return
touch = e.originalEvent.changedTouches[0]
return @_handleMouseUp(
@_getPositionInfo(touch)
)
module.exports = MouseWidget
|
