79 lines
2.7 KiB
CoffeeScript
79 lines
2.7 KiB
CoffeeScript
WebView = require './web-view'
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webViewConstants = require './web-view-constants'
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# Attribute objects.
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# Default implementation of a WebView attribute.
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class WebViewAttribute
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constructor: (name, webViewImpl) ->
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@name = name
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@webViewImpl = webViewImpl
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@ignoreNextMutation = false
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# Retrieves and returns the attribute's value.
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getValue: -> @webViewImpl.webviewNode.getAttribute(@name) || ''
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# Sets the attribute's value.
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setValue: (value) -> @webViewImpl.webviewNode.setAttribute(@name, value || '')
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# Called when the attribute's value changes.
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handleMutation: ->
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# Attribute specifying whether transparency is allowed in the webview.
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class BooleanAttribute extends WebViewAttribute
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constructor: (name, webViewImpl) ->
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super name, webViewImpl
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getValue: ->
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# This attribute is treated as a boolean, and is retrieved as such.
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@webViewImpl.webviewNode.hasAttribute @name
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setValue: (value) ->
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unless value
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@webViewImpl.webviewNode.removeAttribute @name
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else
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@webViewImpl.webviewNode.setAttribute @name, ''
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# Attribute representing the state of the storage partition.
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class Partition extends WebViewAttribute
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constructor: (webViewImpl) ->
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super webViewConstants.ATTRIBUTE_PARTITION, webViewImpl
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@validPartitionId = true
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handleMutation: (oldValue, newValue) ->
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newValue = newValue || ''
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# The partition cannot change if the webview has already navigated.
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unless @webViewImpl.beforeFirstNavigation
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window.console.error webViewConstants.ERROR_MSG_ALREADY_NAVIGATED
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@ignoreNextMutation = true
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@webViewImpl.webviewNode.setAttribute @name, oldValue
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return
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if newValue is 'persist:'
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@validPartitionId = false
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window.console.error webViewConstants.ERROR_MSG_INVALID_PARTITION_ATTRIBUTE
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# Sets up all of the webview attributes.
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WebView::setupWebViewAttributes = ->
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@attributes = {}
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# Initialize the attributes with special behavior (and custom attribute
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# objects).
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@attributes[webViewConstants.ATTRIBUTE_ALLOWTRANSPARENCY] =
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new BooleanAttribute(webViewConstants.ATTRIBUTE_ALLOWTRANSPARENCY, this)
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@attributes[webViewConstants.ATTRIBUTE_AUTOSIZE] =
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new BooleanAttribute(webViewConstants.ATTRIBUTE_AUTOSIZE, this)
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@attributes[webViewConstants.ATTRIBUTE_PARTITION] = new Partition(this)
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# Initialize the remaining attributes, which have default behavior.
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defaultAttributes = [
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webViewConstants.ATTRIBUTE_MAXHEIGHT
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webViewConstants.ATTRIBUTE_MAXWIDTH
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webViewConstants.ATTRIBUTE_MINHEIGHT
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webViewConstants.ATTRIBUTE_MINWIDTH
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webViewConstants.ATTRIBUTE_SRC
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webViewConstants.ATTRIBUTE_HTTPREFERRER
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]
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for attribute in defaultAttributes
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@attributes[attribute] = new WebViewAttribute(attribute, this)
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