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45 lines
1.1 KiB
CoffeeScript
45 lines
1.1 KiB
CoffeeScript
11 years ago
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class Morris.Hover
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# Displays contextual information in a floating HTML div.
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@defaults:
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class: 'morris-hover morris-default-style'
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constructor: (options = {}) ->
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@options = $.extend {}, Morris.Hover.defaults, options
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@el = $ "<div class='#{@options.class}'></div>"
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@el.hide()
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@options.parent.append(@el)
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update: (html, x, y) ->
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if not html
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@hide()
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else
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@html(html)
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@show()
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@moveTo(x, y)
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html: (content) ->
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@el.html(content)
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moveTo: (x, y) ->
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parentWidth = @options.parent.innerWidth()
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parentHeight = @options.parent.innerHeight()
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hoverWidth = @el.outerWidth()
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hoverHeight = @el.outerHeight()
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left = Math.min(Math.max(0, x - hoverWidth / 2), parentWidth - hoverWidth)
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if y?
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top = y - hoverHeight - 10
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if top < 0
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top = y + 10
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if top + hoverHeight > parentHeight
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top = parentHeight / 2 - hoverHeight / 2
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else
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top = parentHeight / 2 - hoverHeight / 2
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@el.css(left: left + "px", top: parseInt(top) + "px")
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show: ->
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@el.show()
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hide: ->
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@el.hide()
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