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devdocs/assets/javascripts/views/layout/resizer.coffee

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class app.views.Resizer extends app.View
@className: '_resizer'
@events:
dragstart: 'onDragStart'
dragend: 'onDragEnd'
drag: 'onDrag'
@isSupported: ->
'ondragstart' of document.createElement('div') and !app.isMobile()
init: ->
@el.setAttribute('draggable', 'true')
@appendTo $('._app')
@style = $('style[data-resizer]')
@size = @style.getAttribute('data-size')
return
MIN = 250
MAX = 600
resize: (value, save) ->
return unless value > 0
value = Math.min(Math.max(Math.round(value), MIN), MAX)
newSize = "#{value}px"
@style.innerHTML = @style.innerHTML.replace(new RegExp(@size, 'g'), newSize)
@size = newSize
if save
app.settings.setSize(value)
app.appCache?.updateInBackground()
return
onDragStart: (event) =>
@style.removeAttribute('disabled')
event.dataTransfer.effectAllowed = 'link'
event.dataTransfer.setData('Text', '')
return
onDrag: (event) =>
return if @lastDrag and @lastDrag > Date.now() - 50
@lastDrag = Date.now()
@resize(event.clientX, false)
return
onDragEnd: (event) =>
@resize(event.screenX - window.screenX, true)
return