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((w) ->
w.gl ?= {}
w.gl.text ?= {}
gl.text.randomString = -> Math.random().toString(36).substring(7)
gl.text.replaceRange = (s, start, end, substitute) ->
s.substring(0, start) + substitute + s.substring(end);
gl.text.selectedText = (text, textarea) ->
text.substring(textarea.selectionStart, textarea.selectionEnd)
gl.text.lineBefore = (text, textarea) ->
split = text.substring(0, textarea.selectionStart).trim().split('\n')
split[split.length - 1]
gl.text.lineAfter = (text, textarea) ->
text.substring(textarea.selectionEnd).trim().split('\n')[0]
gl.text.blockTagText = (text, textArea, blockTag, selected) ->
lineBefore = @lineBefore(text, textArea)
lineAfter = @lineAfter(text, textArea)
if lineBefore is blockTag and lineAfter is blockTag
# To remove the block tag we have to select the line before & after
if blockTag?
textArea.selectionStart = textArea.selectionStart - (blockTag.length + 1)
textArea.selectionEnd = textArea.selectionEnd + (blockTag.length + 1)
selected
else
"#{blockTag}\n#{selected}\n#{blockTag}"
gl.text.insertText = (textArea, text, tag, blockTag, selected, wrap) ->
selectedSplit = selected.split('\n')
startChar = if not wrap and textArea.selectionStart > 0 then '\n' else ''
if selectedSplit.length > 1 and (not wrap or blockTag?)
if blockTag?
insertText = @blockTagText(text, textArea, blockTag, selected)
else
insertText = selectedSplit.map((val) ->
if val.indexOf(tag) is 0
"#{val.replace(tag, '')}"
else
"#{tag}#{val}"
).join('\n')
else
insertText = "#{startChar}#{tag}#{selected}#{if wrap then tag else ' '}"
if document.queryCommandSupported('insertText')
inserted = document.execCommand 'insertText', false, insertText
unless inserted
try
document.execCommand("ms-beginUndoUnit")
textArea.value = @replaceRange(
text,
textArea.selectionStart,
textArea.selectionEnd,
insertText)
try
document.execCommand("ms-endUndoUnit")
@moveCursor(textArea, tag, wrap)
gl.text.moveCursor = (textArea, tag, wrapped) ->
return unless textArea.setSelectionRange
if textArea.selectionStart is textArea.selectionEnd
if wrapped
pos = textArea.selectionStart - tag.length
else
pos = textArea.selectionStart
textArea.setSelectionRange pos, pos
gl.text.updateText = (textArea, tag, blockTag, wrap) ->
$textArea = $(textArea)
oldVal = $textArea.val()
textArea = $textArea.get(0)
text = $textArea.val()
selected = @selectedText(text, textArea)
$textArea.focus()
@insertText(textArea, text, tag, blockTag, selected, wrap)
gl.text.init = (form) ->
self = @
$('.js-md', form)
.off 'click'
.on 'click', ->
$this = $(@)
self.updateText(
$this.closest('.md-area').find('textarea'),
$this.data('md-tag'),
$this.data('md-block'),
not $this.data('md-prepend')
)
gl.text.removeListeners = (form) ->
$('.js-md', form).off()
) window
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