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92 lines
3.2 KiB
CoffeeScript
92 lines
3.2 KiB
CoffeeScript
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{Utils} = require 'nylas-exports'
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sanitizeHtml = require 'sanitize-html'
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class ClipboardService
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constructor: ({@onFilePaste}={}) ->
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onPaste: (evt) =>
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return if evt.clipboardData.items.length is 0
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evt.preventDefault()
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# If the pasteboard has a file on it, stream it to a teporary
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# file and fire our `onFilePaste` event.
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item = evt.clipboardData.items[0]
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if item.kind is 'file'
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blob = item.getAsFile()
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ext = {'image/png': '.png', 'image/jpg': '.jpg', 'image/tiff': '.tiff'}[item.type] ? ''
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temp = require 'temp'
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path = require 'path'
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fs = require 'fs'
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reader = new FileReader()
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reader.addEventListener 'loadend', =>
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buffer = new Buffer(new Uint8Array(reader.result))
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tmpFolder = temp.path('-nylas-attachment')
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tmpPath = path.join(tmpFolder, "Pasted File#{ext}")
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fs.mkdir tmpFolder, =>
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fs.writeFile tmpPath, buffer, (err) =>
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@onFilePaste?(tmpPath)
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reader.readAsArrayBuffer(blob)
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else
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# Look for text/html in any of the clipboard items and fall
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# back to text/plain.
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inputText = evt.clipboardData.getData("text/html") ? ""
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type = "text/html"
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if inputText.length is 0
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inputText = evt.clipboardData.getData("text/plain") ? ""
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type = "text/plain"
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if inputText.length > 0
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cleanHtml = @_sanitizeInput(inputText, type)
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document.execCommand("insertHTML", false, cleanHtml)
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return
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# This is used primarily when pasting text in
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_sanitizeInput: (inputText="", type="text/html") =>
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if type is "text/plain"
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inputText = Utils.encodeHTMLEntities(inputText)
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inputText = inputText.replace(/[\r\n]|[03];/g, "<br/>").
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replace(/\s\s/g, " ")
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else
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inputText = sanitizeHtml inputText.replace(/[\n\r]/g, "<br/>"),
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allowedTags: ['p', 'b', 'i', 'em', 'strong', 'a', 'br', 'img', 'ul', 'ol', 'li', 'strike']
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allowedAttributes:
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a: ['href', 'name']
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img: ['src', 'alt']
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transformTags:
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h1: "p"
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h2: "p"
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h3: "p"
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h4: "p"
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h5: "p"
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h6: "p"
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div: "p"
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pre: "p"
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blockquote: "p"
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table: "p"
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# We sanitized everything and convert all whitespace-inducing
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# elements into <p> tags. We want to de-wrap <p> tags and replace
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# with two line breaks instead.
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inputText = inputText.replace(/<p[\s\S]*?>/gim, "").
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replace(/<\/p>/gi, "<br/>")
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# We never want more then 2 line breaks in a row.
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# https://regex101.com/r/gF6bF4/4
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inputText = inputText.replace(/(<br\s*\/?>\s*){3,}/g, "<br/><br/>")
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# We never want to keep leading and trailing <brs>, since the user
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# would have started a new paragraph themselves if they wanted space
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# before what they paste.
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# BAD: "<p>begins at<br>12AM</p>" => "<br><br>begins at<br>12AM<br><br>"
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# Better: "<p>begins at<br>12AM</p>" => "begins at<br>12"
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inputText = inputText.replace(/^(<br ?\/>)+/, '')
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inputText = inputText.replace(/(<br ?\/>)+$/, '')
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return inputText
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module.exports = ClipboardService
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