X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;ds=sidebyside;f=editor.coffee;h=ec9f9f9331a7ecdb4384b32f9caec289ba82a5f3;hb=6a596f32f02d952a0d4f3f2a6a67d76c579790a6;hp=1b2503e051afcd8484f3aaf14796ef8a29a98d54;hpb=0e48ade448937b84f60cb57d13aa9851e2eb3976;p=peach-html5-editor.git
diff --git a/editor.coffee b/editor.coffee
index 1b2503e..ec9f9f9 100644
--- a/editor.coffee
+++ b/editor.coffee
@@ -16,6 +16,7 @@
# SETTINGS
overlay_padding = 10
+breathing_room = 30 # minimum pixels above/below cursor
timeout = (ms, cb) -> return setTimeout cb, ms
next_frame = (cb) ->
@@ -58,15 +59,19 @@ ws_props =
space: true
newline: true
wrap: false
+ to_collapse: 'nowrap'
'pre-wrap':
space: true
newline: true
wrap: true
+ to_collapse: 'normal'
# xml 1.0 spec, chromium and firefox accept these, plus lots of unicode chars
valid_attr_regex = new RegExp '^[a-zA-Z_:][-a-zA-Z0-9_:.]*$'
# html5 spec is much more lax, but chromium won't let me make at attribute with the name "4"
js_attr_regex = new RegExp '^[oO][nN].'
+# html5 spec says that only these characters are collapsable
+multi_sp_regex = new RegExp '[\u0020\u0009\u000a\u000c\u000d][\u0020\u0009\u000a\u000c\u000d]'
debug_dot_at = (doc, x, y) ->
return # disabled
@@ -317,8 +322,8 @@ first_cursor_position = (tree) ->
cursor = new_cursor_position n: node, i: 0
if cursor?
found = cursor
- return true
- return false
+ return true # done traversing
+ return false # not done traversing
return found # maybe null
# this will fail when text has non-locatable cursor positions
@@ -334,10 +339,10 @@ find_next_cursor_position = (tree, cursor) ->
new_cursor = new_cursor_position n: node, i: 0
if new_cursor?
found = new_cursor
- return true
+ return true # done traversing
if node is cursor.n
state_before = false
- return false
+ return false # not done traversing
if found?
return found
return null
@@ -349,7 +354,7 @@ last_cursor_position = (tree) ->
cursor = new_cursor_position n: node, i: node.text.length
if cursor?
found = cursor
- return false
+ return false # not done traversing
return found # maybe null
# this will fail when text has non-locatable cursor positions
@@ -363,12 +368,12 @@ find_prev_cursor_position = (tree, cursor) ->
traverse_tree tree, (node) ->
if node is cursor.n
found = found_prev # maybe null
- return true
+ return true # done traversing
if node.type is 'text'
new_cursor = new_cursor_position n: node, i: node.text.length
if new_cursor?
found_prev = new_cursor
- return false
+ return false # not done traversing
return found # maybe null
find_up_cursor_position = (tree, cursor, ideal_x) ->
@@ -503,7 +508,7 @@ tree_remove_empty_text_nodes = (tree) ->
if n.type is 'text'
if n.text.length is 0
empties.unshift n
- return false
+ return false # not done traversing
for n in empties
# don't completely empty the tree
if tree.length is 1
@@ -558,21 +563,32 @@ tree_dedup_space = (tree) ->
throw "how is this possible?"
next_i -= 1
return 1
- whitespace_to_space = (undo) ->
+ replace_with_space = (undo) ->
if undo
cur.text = (cur.text.substr 0, cur_i) + removed_char + (cur.text.substr cur_i + 1)
cur.el.textContent = cur.text
else
removed_char = cur.text.charAt(cur_i)
- cur.text = (cur.text.substr 0, cur_i) + ' ' + (cur.text.substr cur_i + 1)
- cur.el.textContent = cur.text
+ if removed_char isnt ' '
+ cur.text = (cur.text.substr 0, cur_i) + ' ' + (cur.text.substr cur_i + 1)
+ cur.el.textContent = cur.text
return 0
# return true if cur was removed from the dom (ie re-use same prev)
operate = ->
# cur definitately set
# prev and/or next might be null, indicating the start/end of a display:block
return false unless is_space_code cur.text.charCodeAt cur_i
- fixers = [remove, whitespace_to_space]
+ fixers = [remove, replace_with_space]
+ # check for common case: single whitespace surrounded by non-whitespace chars
+ if prev? and next?
+ unless (is_space_code prev.text.charCodeAt prev_i) or (is_space_code next.text.charCodeAt next_i)
+ dbg = cur.text.charCodeAt cur_i
+ if cur.text.charAt(cur_i) is ' ' # perens required
+ # single space can't collapse, doesn't need fixin'
+ return false
+ else
+ # tab, newline, etc, can't collapse, but maybe should be replaced
+ fixers = [replace_with_space]
bounds = text_range_bounds cur.el, cur_i, cur_i + 1
# consistent cases:
# 1. zero rects returned by getClientRects() means collapsed space
@@ -580,7 +596,8 @@ tree_dedup_space = (tree) ->
return remove()
# 2. width greater than zero means visible space
if bounds.w > 0
- fixers.shift() # don't try removing
+ # has bounds, don't try removing
+ fixers = [replace_with_space]
# now the weird edge cases...
#
# firefox and chromium both report zero width for characters at the end
@@ -589,6 +606,11 @@ tree_dedup_space = (tree) ->
# collapsed spaces via the range/bounds api, so...
#
# remove it from the dom, and if prev or next moves, put it back.
+ #
+ # this block (try changing it, put it back if something moves) is also
+ # used on collapsable whitespace characters besides space. In this case
+ # the character is replaced with a normal space character instead of
+ # removed
if prev? and not prev_px?
prev_px = new_cursor_position n: prev, i: prev_i
if next? and not next_px?
@@ -664,7 +686,8 @@ class PeachHTML5Editor
constructor: (in_el, options) ->
@options = options ? {}
@in_el = in_el
- @tree = null
+ @tree = null # array of Nodes, all editable content
+ @tree_parent = null # @tree is this.children. .el might === @idoc.body
@matting = []
@init_1_called = false # when iframes have loaded
@outer_iframe # iframe to hold editor
@@ -917,24 +940,18 @@ class PeachHTML5Editor
@move_cursor new_cursor
return false
when KEY_END
- return false
- when KEY_BACKSPACE
- return false unless @cursor?
- return false unless @cursor.i > 0
- @remove_character @cursor.n, @cursor.i - 1
- @adjust_whitespace_style @cursor.n
- @changed()
- new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i - 1
+ new_cursor = last_cursor_position @tree
if new_cursor?
@move_cursor new_cursor
- else
- @kill_cursor()
+ return false
+ when KEY_BACKSPACE
+ @on_key_backspace e
return false
when KEY_DELETE
return false unless @cursor?
return false unless @cursor.i < @cursor.n.text.length
@remove_character @cursor.n, @cursor.i
- @adjust_whitespace_style @cursor.n
+ @text_cleanup @cursor.n
@changed()
new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i
if new_cursor?
@@ -943,16 +960,23 @@ class PeachHTML5Editor
@kill_cursor()
return false
when KEY_ENTER
+ @on_key_enter e
return false
when KEY_ESCAPE
+ @kill_cursor()
return false
when KEY_HOME
+ new_cursor = first_cursor_position @tree
+ if new_cursor?
+ @move_cursor new_cursor
return false
when KEY_INSERT
return false
when KEY_PAGE_UP
+ @on_page_up_key e
return false
when KEY_PAGE_DOWN
+ @on_page_down_key e
return false
when KEY_TAB
return false
@@ -963,7 +987,7 @@ class PeachHTML5Editor
if char and @cursor?
char = String.fromCharCode char
@insert_character @cursor.n, @cursor.i, char
- @adjust_whitespace_style @cursor.n
+ @text_cleanup @cursor.n
@changed()
new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i + 1
if new_cursor
@@ -972,6 +996,291 @@ class PeachHTML5Editor
console.log "ERROR: couldn't find cursor position after insert"
@kill_cursor()
return false
+ on_key_enter: (e) -> # enter key pressed
+ return unless @cursor_visible
+ cur_block = @cursor.n
+ loop
+ if cur_block.type is 'tag'
+ if is_display_block cur_block.el
+ break
+ return unless cur_block.parent?
+ cur_block = cur_block.parent
+ # find array to insert new element into
+ if cur_block.parent is @tree_parent # top-level
+ parent_el = @idoc.body
+ pc = @tree
+ else
+ parent_el = cur_block.parent.el
+ pc = cur_block.parent.children
+ # find index of current block in its parent
+ for n, i in pc
+ break if n is cur_block
+ i += 1 # we want to be after it
+ if i < pc.length
+ before = pc[i].el
+ else
+ before = null
+ # TODO if content after cursor
+ # TODO new block is empty
+ new_text = new peach_parser.Node 'text', text: ' '
+ new_node = new peach_parser.Node 'tag', name: 'p', parent: cur_block.parent, attrs: {style: 'white-space: pre-wrap'}, children: [new_text]
+ new_text.parent = new_node
+ new_text.el = domify @idoc, text: ' '
+ new_node.el = domify @idoc, p: style: 'white-space: pre-wrap', children: [new_text.el]
+ pc.splice i, 0, new_node
+ parent_el.insertBefore new_node.el, before
+ @changed()
+ new_cursor = new_cursor_position n: new_text, i: 0
+ throw 'bork bork' unless new_cursor?
+ @move_cursor new_cursor
+ # TODO move content past cursor into this new block
+ # unlike the global function, this takes a Node, not an element
+ is_display_block: (n) ->
+ # TODO stop calling global function, merge it into here, use iframe's window object
+ return false unless n.type is 'tag'
+ return is_display_block n.el
+ find_block_parent: (n) ->
+ loop
+ n = n.parent
+ return null unless n?
+ return n if @is_display_block n
+ return n if n is @tree_parent
+ return null
+ # return a flat array of nodes (text,
, and later also inline-block)
+ # that are flowing/wrapping together. n can be the containing block, or any
+ # element inside it.
+ get_text_run: (n) ->
+ if @is_display_block n
+ block = n
+ else
+ block = @find_block_parent n
+ return unless block?
+ ret = []
+ traverse_tree n.children, (n) =>
+ if n.type is 'text'
+ ret.push n
+ else if n.type is 'tag'
+ if n.name is 'br'
+ ret.push n
+ else
+ disp = @computed_style n
+ if disp is 'inline-block'
+ ret.push n
+ return false # not done traversing
+ return ret
+ on_key_backspace: (e) ->
+ return false unless @cursor?
+ if @is_lone_space @cursor.n # false if it's not in a tag
+ if @cursor.i is 1
+ # don't delete the space, because then it would collapse
+ # instead leave a space after the cursor
+ new_cursor = new_cursor_position n: @cursor.n, i: 0
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @kill_cursor()
+ else
+ # cursor at the begining of an element that contains only a space
+ parent = @cursor.n.parent
+ new_cursor = find_prev_cursor_position @tree, @cursor
+ if new_cursor?
+ if new_cursor.n is @cursor.n or new_cursor.n is parent
+ new_cursor = null
+ tag = @cursor.n.parent
+ if tag is @tree_parent
+ console.log "top-level text not supported" # FIXME
+ return false
+ for n, i in tag.parent.children
+ if n is tag
+ tag.parent.el.removeChild tag.el
+ tag.parent.children.splice i, 1
+ break
+ @changed()
+ if new_cursor?
+ # re-check, in case it moved or is invalid now
+ new_cursor = new_cursor_position n: new_cursor.n, i: new_cursor.i
+ if new_cursor?
+ @move_cursor new_cursor
+ return
+ new_cursor = first_cursor_position @tree
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @kill_cursor
+ return
+ else if @cursor.i is 0 # start of text chunk
+ # FIXME clean this up: use new code for text runs
+ # FIXME handle backspacing a
even if it's near a inline tag boundary
+ # determine if cursor is at start of text run (text formatted inline)
+ block = @find_block_parent @cursor.n
+ return unless block
+ at_block_start = true
+ prev_pos = find_prev_cursor_position @tree, @cursor
+ unless prev_pos?
+ # if the cursor can't go back, then there's probably nowhere we can merge into
+ # TODO consider case of nested blocks. should backspace remove one?
+ return
+ prev_pos_block = @find_block_parent prev_pos.n
+ if prev_pos_block is block
+ # context: there is text before the cursor within the same block.
+ # FIXME clean up this hack for looking for
(see above)
+ cursor_text_pi = @cursor.n.parent.children.indexOf @cursor.n
+ if cursor_text_pi > 0
+ prev_node = @cursor.n.parent.children[cursor_text_pi - 1]
+ if prev_node.type is 'tag' and prev_node.name is 'br'
+ @remove_node prev_node
+ @text_cleanup @cursor.n.parent
+ @changed()
+ new_cursor = new_cursor_position n: prev_pos.n, i: prev_pos.i
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @kill_cursor
+ return
+ # note: find_prev_cursor_position just crossed a boundary, not a character
+ # prev_pos is within the same block, try deleting there
+ @move_cursor prev_pos
+ # FIXME cleanup: don't call @move_cursor twice if the next line succeeds
+ return @on_key_backspace()
+ # context: backspace pressed at start of a display:block
+ return if block is @tree_parent # top level text
+ parent = block.parent
+ parent_i = parent.children.indexOf block
+ if parent_i is -1
+ throw "BUG #98270918347"
+ return
+ if parent_i is 0
+ # no previous sibling to merge into, so instead move contents into parent
+ dest = parent
+ before = block
+ else
+ # FIXME prev_sib should be the previous in-flow element
+ # ie it should skip comments, hidden things, floating things, etc.
+ prev_sib = parent.children[parent_i - 1]
+ if @is_display_block prev_sib
+ dest = prev_sib
+ before = null # null means append
+ else
+ dest = parent
+ before = block
+ if dest is @tree_parent
+ # don't remove outer-most blocks
+ return
+ while block.children.length > 0
+ n = block.children[block.children.length - 1]
+ @move_node n, dest, before
+ before = n
+ @remove_node block
+ @text_cleanup dest
+ @changed()
+ new_cursor = new_cursor_position n: prev_pos.n, i: prev_pos.i
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @kill_cursor
+ return
+ else
+ # TODO handle case of removing last char
+ # CONTINUE
+ if @is_only_char_in_tag @cursor.n
+ if @is_display_block @cursor.n.parent
+ @cursor.n.el.textContent = @cursor.n.text = ' '
+ else
+ console.log "unimplemented: delete last char in inline" # FIXME
+ return
+ else
+ @remove_character @cursor.n, @cursor.i - 1
+ @text_cleanup @cursor.n
+ @changed()
+ new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i - 1
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @kill_cursor()
+ return
+ on_page_up_key: (e) ->
+ if @wrap2.scrollTop is 0
+ return unless @cursor?
+ new_cursor = first_cursor_position @tree
+ if new_cursor?
+ if new_cursor.n isnt @cursor.n or new_cursor.i isnt @cursor.i
+ @move_cursor new_cursor
+ return
+ if @cursor?
+ screen_y = @cursor.y - @wrap2.scrollTop
+ scroll_amount = @wrap2_height - breathing_room
+ @wrap2.scrollTop = Math.max 0, @wrap2.scrollTop - scroll_amount
+ if @cursor?
+ @move_cursor_into_view screen_y + @wrap2.scrollTop
+ on_page_down_key: (e) ->
+ lowest_scrollpos = @wrap2.scrollHeight - @wrap2_height
+ if @wrap2.scrollTop is lowest_scrollpos
+ return unless @cursor?
+ new_cursor = last_cursor_position @tree
+ if new_cursor?
+ if new_cursor.n isnt @cursor.n or new_cursor.i isnt @cursor.i
+ @move_cursor new_cursor
+ return
+ if @cursor?
+ screen_y = @cursor.y - @wrap2.scrollTop
+ scroll_amount = @wrap2_height - breathing_room
+ @wrap2.scrollTop = Math.min lowest_scrollpos, @wrap2.scrollTop + scroll_amount
+ if @cursor?
+ @move_cursor_into_view screen_y + @wrap2.scrollTop
+ return
+ move_cursor_into_view: (y_target) ->
+ return if y_target is @cursor.y
+ was = @cursor
+ y_min = @wrap2.scrollTop
+ unless @wrap2.scrollTop is 0
+ y_min += breathing_room
+ y_max = @wrap2.scrollTop + @wrap2_height
+ unless @wrap2.scrollTop is @wrap2.scrollHeight - @wrap2_height # downmost
+ y_max -= breathing_room
+ y_target = Math.min y_target, y_max
+ y_target = Math.max y_target, y_min
+ if y_target < @cursor.y
+ finder = find_up_cursor_position
+ far_enough = (cur, target_y) ->
+ return cur.y + cur.h <= target_y
+ else
+ finder = find_down_cursor_position
+ far_enough = (cur, y_target) ->
+ return cur.y >= y_target
+ loop
+ cur = finder @tree, was, @cursor_ideal_x
+ break unless cur?
+ break if far_enough cur, y_target
+ was = cur
+ if was is @cursor
+ was = null
+ if was?
+ if was.y + was.h > y_max
+ was = null
+ else if was.y < y_min
+ was = null
+ if cur?
+ if cur.y + cur.h > y_max
+ cur = null
+ else if cur.y < y_min
+ cur = null
+ if cur? and was?
+ # both valid, pick best
+ if cur.y < y_min
+ new_cursor = was
+ else if was.y + was.h > y_max
+ new_cursor = cur
+ else if cur.y - y_target < y_target - was.y
+ new_cursor = cur
+ else
+ new_cursor = was
+ else
+ new_cursor = was ? cur
+ if new_cursor?
+ saved_ideal_x = @cursor_ideal_x
+ @move_cursor new_cursor
+ @cursor_ideal_x = saved_ideal_x
+ return
clear_dom: -> # remove all the editable content (and cursor, overlays, etc)
while @idoc.body.childNodes.length
@idoc.body.removeChild @idoc.body.childNodes[0]
@@ -979,8 +1288,12 @@ class PeachHTML5Editor
return
load_html: (html) ->
@tree = peach_parser.parse html, @parser_opts
+ if !@tree[0]?.parent
+ @tree = peach_parser.parse '
', @parser_opts + @tree_parent = @tree[0]?.parent + @tree_parent.el = @idoc.body @clear_dom() - instantiate_tree @tree, @idoc.body + instantiate_tree @tree, @tree_parent.el tree_dedup_space @tree @changed() changed: -> @@ -1001,6 +1314,7 @@ class PeachHTML5Editor # does this node have whitespace that would be collapsed by white-space: normal? # note: this checks direct text children, and does _not_ recurse into child tags # tag is a node with type:"tag" + # FIXME use new textrun api has_collapsable_space: (tag) -> for n in tag.children if n.type is 'text' @@ -1018,56 +1332,42 @@ class PeachHTML5Editor return true if is_space_code n.text.charCodeAt n.text.length - 1 return true - # add/remove "white-space: pre[-wrap]" to/from style="" on tags with direct - # child text nodes with multiple spaces in a row, or spaces at the - # start/end. - # - # text inside child tags are not consulted. Child tags are expected to have - # this function applied to them when their content changes. - adjust_whitespace_style: (n) -> - if n.type is 'text' - n = n.parent - return unless n?.el? - # which css rule should be used to preserve spaces (should we need to) - style = @iframe.contentWindow.getComputedStyle n.el, null - ws = style.getPropertyValue 'white-space' - if ws_props[ws].space - preserve_rule = ws - else - preserve_rule = ws_props[ws].to_preserve - preserve_rule = "white-space: #{preserve_rule}" - if @has_collapsable_space n - # make sure preserve_rule exists - if n.el.style['white-space'] - # FIXME check that it matches - return - if n.attrs[style]? - n.attrs.style += "; #{preserve_rule}" - else - n.attrs.style = preserve_rule - n.el.setAttribute 'style', n.attrs.style - else - # remove preserve_rule if it exists - return unless n.attrs.style? - # FIXME don't assume whitespace is just so - if n.attrs.style is "white-space: #{ws}" - delete n.attrs.style - n.el.removeAttribute 'style' - else - # FIXME find it in the middle and at the start - needle = "; white-space: #{ws}" - if needle is n.attrs.style.substr n.attrs.style.length - needle - n.attrs.style = n.attrs.style.substr 0, n.attrs.style.length - needle - n.el.setAttribute n.attrs.style - # after calling this, you MUST call changed() and adjust_whitespace_style() + return false + # true if n is text node with only one caracter, and the only child of a tag + is_only_char_in_tag: (n, i) -> + return false unless n.type is 'text' + return false unless n.text.length is 1 + return false if n.parent is @tree_parent + return false unless n.parent.children.length is 1 + return true + # true if n is text node with just a space in it, and the only child of a tag + is_lone_space: (n, i) -> + return false unless n.type is 'text' + return false unless n.text is ' ' + return false if n.parent is @tree_parent + return false unless n.parent.children.length is 1 + return true + # detect special case: typing before a space that's the only thing in a block/doc + # reason: enter key creates blocks with just a space in them + insert_should_replace: (n, i) -> + return false unless i is 0 + return false unless n.text is ' ' + return true if n.parent is @tree_parent + if n.parent.children.length is 1 + if n.parent.children[0] is n + # n is only child + return true + return false + # after calling this, you MUST call changed() and text_cleanup() insert_character: (n, i, char) -> - parent = @cursor.n.parent - return unless parent - return unless parent.el? + return if n.parent is @tree_parent # FIXME implement text nodes at top level # insert the character - if i is 0 + if @insert_should_replace n, i + n.text = char + else if i is 0 n.text = char + n.text else if i is n.text.length + # replace the space n.text += char else n.text = @@ -1075,16 +1375,190 @@ class PeachHTML5Editor char + n.text.substr(i) n.el.nodeValue = n.text - # after calling this, you MUST call changed() and adjust_whitespace_style() + # WARNING: after calling this, you MUST call changed() and text_cleanup() remove_character: (n, i) -> n.text = n.text.substr(0, i) + n.text.substr(i + 1) n.el.nodeValue = n.text + computed_style: (n, prop) -> + if n.type is 'text' + n = n.parent + style = @iframe.contentWindow.getComputedStyle n.el, null + return style.getPropertyValue prop + # returns the new white-space value that will preserve spaces for node n + preserve_space: (n, ideal_target) -> + if n.type is 'text' + target = n.parent + else + target = n + while target isnt ideal_target and not target.el.style.whiteSpace + unless target? + console.log "bug #967123" + return + target = target.parent + ws = ws_props[target.el.style.whiteSpace]?.to_preserve + ws ?= 'pre-wrap' + target.el.style.whiteSpace = ws + @update_style_from_el target + return ws + update_style_from_el: (n) -> + style = n.el.getAttribute 'style' + if style? + n.attrs.style = style + else + if n.attrs.style? + delete n.attrs.style + # call this after you insert or remove inline nodes. It will: + # merge consecutive text nodes + # remove empty text nodes + # adjust white-space property + text_cleanup: (n) -> + if @is_display_block n + block = n + else + block = @find_block_parent n + return unless block? + run = @get_text_run block + return unless run? + # merge consecutive text nodes + if run.length > 1 + i = 1 + prev = run[0] + while i < run.length + n = run[i] + if prev.type is 'text' and n.type is 'text' + if prev.parent is n.parent + prev_i = n.parent.children.indexOf prev + n_i = n.parent.children.indexOf n + if n_i is prev_i + 1 + prev.text = prev.text + n.text + prev.el.textContent = prev.text + @remove_node n + run.splice i, 1 + continue # don't increment i or change prev + i += 1 + prev = n + # remove empty text nodes + i = 0 + while i < run.length + n = run[i] + if n.type is 'text' + if n.text is '' + @remove_node n + # FIXME maybe remove parents recursively if this makes them empty + run.splice i, 1 + continue # don't increment i + i += 1 + # note: inline tags can have white-space:pre-line/etc + # note: inline-blocks have their whitespace collapsed independantly of outer run + # note: inline-blocks are treated like non-whitespace char even if empty + if block.el.style.whiteSpace? + ws = block.el.style.whiteSpace + if ws_props[ws] + if ws_props[ws].space + if ws_props[ws].to_collapse is 'normal' + block.el.style.whiteSpace = null + else + block.el.style.whiteSpace = ws_props[ws].to_collapse + @update_style_from_el block + # note: space after