# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
+# SETTINGS
+overlay_padding = 10
+breathing_room = 30 # minimum pixels above/below cursor
+
+timeout = (ms, cb) -> return setTimeout cb, ms
+next_frame = (cb) ->
+ if (window.requestAnimationFrame?)
+ window.requestAnimationFrame cb
+ else
+ timeout 16, cb
+
+this_url_sans_path = ->
+ ret = "#{window.location.href}"
+ clip = ret.lastIndexOf '#'
+ if clip > -1
+ ret = ret.substr 0, clip
+ clip = ret.lastIndexOf '?'
+ if clip > -1
+ ret = ret.substr 0, clip
+ clip = ret.lastIndexOf '/'
+ if clip > -1
+ ret = ret.substr 0, clip + 1
+ return ret
+
+# table too look up the properties of various values for css's white-space
+ws_props =
+ normal:
+ space: false # spaces are not preserved/rendered
+ newline: false # newlines are not preserved/rendered
+ wrap: true # text is word-wrapped
+ to_preserve: 'pre-wrap' # to preservespaces, change white-space to this
+ nowrap:
+ space: false
+ newline: false
+ wrap: false
+ to_preserve: 'pre'
+ 'pre-line':
+ space: false
+ newline: true
+ wrap: true
+ to_preserve: 'pre-wrap'
+ pre:
+ space: true
+ newline: true
+ wrap: false
+ 'pre-wrap':
+ space: true
+ newline: true
+ wrap: true
+
+# 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].'
+
+debug_dot_at = (doc, x, y) ->
+ return # disabled
+ el = doc.createElement 'div'
+ el.setAttribute 'style', "position: absolute; left: #{x}px; top: #{y}px; width: 1px; height: 3px; background-color: red"
+ doc.body.appendChild el
+ #console.log(new Error().stack)
+
+# text nodes don't have getBoundingClientRect(), so use selection api to find
+# it.
+get_el_bounds = window.bounds = (el) ->
+ if el.getBoundingClientRect?
+ rect = el.getBoundingClientRect()
+ else
+ # text nodes don't have getBoundingClientRect(), so use range api
+ range = el.ownerDocument.createRange()
+ range.selectNodeContents el
+ rect = range.getBoundingClientRect()
+ doc = el.ownerDocument.documentElement
+ win = el.ownerDocument.defaultView
+ y_fix = win.pageYOffset - doc.clientTop
+ x_fix = win.pageXOffset - doc.clientLeft
+ return {
+ x: rect.left + x_fix
+ y: rect.top + y_fix
+ w: rect.width ? (rect.right - rect.left)
+ h: rect.height ? (rect.top - rect.bottom)
+ }
+
+is_display_block = (el) ->
+ if el.currentStyle?
+ return el.currentStyle.display is 'block'
+ else
+ return window.getComputedStyle(el, null).getPropertyValue('display') is 'block'
+
+# Pass return value from dom event handlers to this.
+# If they return false, this will addinionally stop propagation and default.
+event_return = (e, bool) ->
+ if bool is false
+ if e.stopPropagation?
+ e.stopPropagation()
+ if e.preventDefault?
+ e.preventDefault()
+ return bool
+# Warning: currently assumes you're asking about a single character
+# Note: chromium returns multiple bounding rects for a space at a line-break
+# Note: chromium's getBoundingClientRect() is broken (when zero-area client rects)
+# Note: sometimes returns null (eg for whitespace that is not visible)
+text_range_bounds = (el, start, end) ->
+ range = document.createRange()
+ range.setStart el, start
+ range.setEnd el, end
+ rects = range.getClientRects()
+ if rects.length > 0
+ if rects.length > 1
+ if rects[1].width > rects[0].width
+ rect = rects[1]
+ else
+ rect = rects[0]
+ else
+ rect = rects[0]
+ else
+ return null
+ doc = el.ownerDocument.documentElement
+ win = el.ownerDocument.defaultView
+ y_fix = win.pageYOffset - doc.clientTop
+ x_fix = win.pageXOffset - doc.clientLeft
+ return {
+ x: rect.left + x_fix
+ y: rect.top + y_fix
+ w: rect.width ? (rect.right - rect.left)
+ h: rect.height ? (rect.top - rect.bottom)
+ rects: rects
+ bounding: range.getBoundingClientRect()
+ }
+
+class CursorPosition
+ constructor: (args) ->
+ @n = args.n ? null
+ @i = args.i ? null
+ if args.x?
+ @x = args.x
+ @y = args.y
+ @h = args.h
+ else
+ @set_xyh()
+ return
+ set_xyh: ->
+ range = document.createRange()
+ if @n.text.length is 0
+ ret = text_range_bounds @n.el, 0, 0
+ else if @i is @n.text.length
+ ret = text_range_bounds @n.el, @i - 1, @i
+ if ret?
+ ret.x += ret.w
+ else
+ ret = text_range_bounds @n.el, @i, @i + 1
+ if ret?
+ @x = ret.x
+ @y = ret.y
+ @h = ret.h
+ else
+ @x = null
+ @y = null
+ @h = null
+ return ret
+
+new_cursor_position = (args) ->
+ ret = new CursorPosition args
+ if ret.x?
+ return ret
+ return null
+
+# encode text so it can be safely placed inside an html attribute
+enc_attr_regex = new RegExp '(&)|(")|(\u00A0)', 'g'
+enc_attr = (txt) ->
+ return txt.replace enc_attr_regex, (match, amp, quote) ->
+ return '&' if (amp)
+ return '"' if (quote)
+ return ' '
+enc_text_regex = new RegExp '(&)|(<)|(\u00A0)', 'g'
+enc_text = (txt) ->
+ return txt.replace enc_text_regex, (match, amp, lt) ->
+ return '&' if (amp)
+ return '<' if (lt)
+ return ' '
+
+void_elements = {
+ area: true
+ base: true
+ br: true
+ col: true
+ embed: true
+ hr: true
+ img: true
+ input: true
+ keygen: true
+ link: true
+ meta: true
+ param: true
+ source: true
+ track: true
+ wbr: true
+}
+# TODO make these always pretty-print (on the inside) like blocks
+no_text_elements = { # these elements never contain text
+ select: true
+ table: true
+ tr: true
+ thead: true
+ tbody: true
+ ul: true
+ ol: true
+}
+
+domify = (doc, hash) ->
+ for tag, attrs of hash
+ if tag is 'text'
+ return document.createTextNode attrs
+ el = document.createElement tag
+ for k, v of attrs
+ if k is 'children'
+ for child in v
+ el.appendChild child
+ else
+ el.setAttribute k, v
+ return el
+
+
+
+ignore_key_codes =
+ '18': true # alt
+ '20': true # capslock
+ '17': true # ctrl
+ '144': true # numlock
+ '16': true # shift
+ '91': true # windows "start" key
+# key codes: (valid on keydown, not keypress)
+KEY_LEFT = 37
+KEY_UP = 38
+KEY_RIGHT = 39
+KEY_DOWN = 40
+KEY_BACKSPACE = 8 # <--
+KEY_DELETE = 46 # -->
+KEY_END = 35
+KEY_ENTER = 13
+KEY_ESCAPE = 27
+KEY_HOME = 36
+KEY_INSERT = 45
+KEY_PAGE_UP = 33
+KEY_PAGE_DOWN = 34
+KEY_TAB = 9
+control_key_codes = # we react to these, but they aren't typing
+ '37': KEY_LEFT
+ '38': KEY_UP
+ '39': KEY_RIGHT
+ '40': KEY_DOWN
+ '35': KEY_END
+ '8': KEY_BACKSPACE
+ '46': KEY_DELETE
+ '13': KEY_ENTER
+ '27': KEY_ESCAPE
+ '36': KEY_HOME
+ '45': KEY_INSERT
+ '33': KEY_PAGE_UP
+ '34': KEY_PAGE_DOWN
+ '9': KEY_TAB
+
+instantiate_tree = (tree, parent) ->
+ remove = []
+ for c, i in tree
+ switch c.type
+ when 'text'
+ c.el = parent.ownerDocument.createTextNode c.text
+ parent.appendChild c.el
+ when 'tag'
+ if c.name in ['script', 'object', 'iframe', 'link']
+ # TODO put placeholders instead
+ remove.unshift i
+ continue
+ # TODO create in correct namespace
+ c.el = parent.ownerDocument.createElement c.name
+ for k, v of c.attrs
+ # FIXME if attr_whitelist[k]?
+ if valid_attr_regex.test k
+ unless js_attr_regex.test k
+ c.el.setAttribute k, v
+ parent.appendChild c.el
+ if c.children.length
+ instantiate_tree c.children, c.el
+ for i in remove
+ tree.splice i, 1
+
+traverse_tree = (tree, cb) ->
+ done = false
+ for c in tree
+ done = cb c
+ return done if done
+ if c.children.length
+ done = traverse_tree c.children, cb
+ return done if done
+ return done
+
+first_cursor_position = (tree) ->
+ found = null
+ traverse_tree tree, (node, state) ->
+ if node.type is 'text'
+ cursor = new_cursor_position n: node, i: 0
+ if cursor?
+ found = cursor
+ return true
+ return false
+ return found # maybe null
+
+# this will fail when text has non-locatable cursor positions
+find_next_cursor_position = (tree, cursor) ->
+ if cursor.n.type is 'text' and cursor.n.text.length > cursor.i
+ new_cursor = new_cursor_position n: cursor.n, i: cursor.i + 1
+ if new_cursor?
+ return new_cursor
+ state_before = true
+ found = null
+ traverse_tree tree, (node, state) ->
+ if node.type is 'text' and state_before is false
+ new_cursor = new_cursor_position n: node, i: 0
+ if new_cursor?
+ found = new_cursor
+ return true
+ if node is cursor.n
+ state_before = false
+ return false
+ if found?
+ return found
+ return null
+
+last_cursor_position = (tree) ->
+ found = null
+ traverse_tree tree, (node) ->
+ if node.type is 'text'
+ cursor = new_cursor_position n: node, i: node.text.length
+ if cursor?
+ found = cursor
+ return false
+ return found # maybe null
+
+# this will fail when text has non-locatable cursor positions
+find_prev_cursor_position = (tree, cursor) ->
+ if cursor.n.type is 'text' and cursor.i > 0
+ new_cursor = new_cursor_position n: cursor.n, i: cursor.i - 1
+ if new_cursor?
+ return new_cursor
+ found_prev = null
+ found = null
+ traverse_tree tree, (node) ->
+ if node is cursor.n
+ found = found_prev # maybe null
+ return true
+ 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 found # maybe null
+
+find_up_cursor_position = (tree, cursor, ideal_x) ->
+ new_cursor = cursor
+ # go prev until we're higher on y axis
+ while new_cursor.y >= cursor.y
+ new_cursor = find_prev_cursor_position tree, new_cursor
+ return null unless new_cursor?
+ # done early if we're already left of old cursor position
+ if new_cursor.x <= ideal_x
+ return new_cursor
+ target_y = new_cursor.y
+ # search leftward, until we find the closest position
+ # new_cursor is the prev-most position we've checked
+ # prev_cursor is the older value, so it's not as prev as new_cursor
+ while new_cursor.x > ideal_x and new_cursor.y is target_y
+ prev_cursor = new_cursor
+ new_cursor = find_prev_cursor_position tree, new_cursor
+ break unless new_cursor?
+ # move cursor to prev_cursor or new_cursor
+ if new_cursor?
+ if new_cursor.y is target_y
+ # both valid, and on the same line, use closest
+ if (ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)
+ return new_cursor
+ else
+ return prev_cursor
+ else
+ # new_cursor on wrong line, use prev_cursor
+ return prev_cursor
+ else
+ # can't go any further prev, use prev_cursor
+ return prev_cursor
+
+find_down_cursor_position = (tree, cursor, ideal_x) ->
+ new_cursor = cursor
+ # go next until we move on the y axis
+ while new_cursor.y <= cursor.y
+ new_cursor = find_next_cursor_position tree, new_cursor
+ return null unless new_cursor?
+ # done early if we're already right of old cursor position
+ if new_cursor.x >= ideal_x
+ # this would be strange, but could happen due to runaround
+ return new_cursor
+ target_y = new_cursor.y
+ # search rightward, until we find the closest position
+ # new_cursor is the next-most position we've checked
+ # prev_cursor is the older value, so it's not as next as new_cursor
+ while new_cursor.x < ideal_x and new_cursor.y is target_y
+ prev_cursor = new_cursor
+ new_cursor = find_next_cursor_position tree, new_cursor
+ break unless new_cursor?
+ # move cursor to prev_cursor or new_cursor
+ if new_cursor?
+ if new_cursor.y is target_y
+ # both valid, and on the same line, use closest
+ if (new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)
+ return new_cursor
+ else
+ return prev_cursor
+ else
+ # new_cursor on wrong line, use prev_cursor
+ return prev_cursor
+ else
+ # can't go any further prev, use prev_cursor
+ return prev_cursor
+
+xy_to_cursor = (tree, xy) ->
+ for n in tree
+ if n.type is 'tag' or n.type is 'text'
+ bounds = get_el_bounds n.el
+ continue if xy.x < bounds.x
+ continue if xy.x > bounds.x + bounds.w
+ continue if xy.y < bounds.y
+ continue if xy.y > bounds.y + bounds.h
+ if n.children.length
+ ret = xy_to_cursor n.children, xy
+ return ret if ret?
+ if n.type is 'text'
+ # click is within bounding box that contains all text.
+ if n.text.length is 0
+ ret = new_cursor_position n: n, i: 0
+ return ret if ret?
+ continue
+ before = new_cursor_position n: n, i: 0
+ continue unless before?
+ after = new_cursor_position n: n, i: n.text.length
+ continue unless after?
+ if xy.y < before.y + before.h and xy.x < before.x
+ # console.log 'before first char on first line'
+ continue
+ if xy.y > after.y and xy.x > after.x
+ # console.log 'after last char on last line'
+ continue
+ if xy.y < before.y
+ console.log "Warning: click in text bounding box but above first line"
+ continue # above first line (runaround?)
+ if xy.y > after.y + after.h
+ console.log "Warning: click in text bounding box but below last line", xy.y, after.y, after.h
+ continue # below last line (shouldn't happen?)
+ while after.i - before.i > 1
+ guess_i = Math.round((before.i + after.i) / 2)
+ cur = new_cursor_position n: n, i: guess_i
+ unless cur?
+ console.log "error: failed to find cursor pixel location for", n, guess_i
+ before = null
+ break
+ if xy.y < cur.y or (xy.y <= cur.y + cur.h and xy.x < cur.x)
+ after = cur
+ else
+ before = cur
+ continue unless before? # signals failure to find a cursor position
+ # which one is closest?
+ if Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)
+ return before
+ else
+ return after
+ return null
+
+# browsers collapse these (html5 spec calls these "space characters")
+is_space_code = (char_code) ->
+ switch char_code
+ when 9, 10, 12, 13, 32
+ return true
+ return false
+is_space = (chr) ->
+ return is_space_code chr.charCodeAt 0
+
+tree_remove_empty_text_nodes = (tree) ->
+ empties = []
+ traverse_tree tree, (n) ->
+ if n.type is 'text'
+ if n.text.length is 0
+ empties.unshift n
+ return false
+ for n in empties
+ # don't completely empty the tree
+ if tree.length is 1
+ if tree[0].type is 'text'
+ console.log "oop, leaving a blank node because it's the only thing"
+ return
+ n.el.parentNode.removeChild n.el
+ for c, i in n.parent.children
+ if c is n
+ n.parent.children.splice i, 1
+ break
+
+# pass a array of nodes (from parser library, ie it should have .el and .text)
+tree_dedup_space = (tree) ->
+ prev = cur = next = null
+ prev_i = cur_i = next_i = 0
+ prev_pos = pos = next_pos = null
+ prev_px = cur_px = next_px = null
+ first = true
+ removed_char = null
+
+ tree_remove_empty_text_nodes(tree)
+
+ iterate = (tree, cb) ->
+ for n in tree
+ if n.type is 'text'
+ i = 0
+ while i < n.text.length # don't foreach, cb might remove chars
+ advance = cb n, i
+ if advance
+ i += 1
+ if n.type is 'tag'
+ block = is_display_block n.el
+ if block
+ cb null
+ if n.children.length > 0
+ iterate n.children, cb
+ if block
+ cb null
+ # remove cur char
+ remove = (undo) ->
+ if undo
+ cur.el.textContent = cur.text = (cur.text.substr 0, cur_i) + removed_char + (cur.text.substr cur_i)
+ if next is cur # in same text node
+ next_i += 1
+ return -1
+ else
+ removed_char = cur.text.charAt(cur_i)
+ cur.el.textContent = cur.text = (cur.text.substr 0, cur_i) + (cur.text.substr cur_i + 1)
+ if next is cur # in same text node
+ if next_i is 0
+ throw "how is this possible?"
+ next_i -= 1
+ return 1
+ 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)
+ 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, 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
+ if bounds is null
+ return remove()
+ # 2. width greater than zero means visible space
+ if bounds.w > 0
+ # 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
+ # of a line where the text wraps (automatically, due to word-wrap) to
+ # the next line. These do not appear to be distinguishable from
+ # 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?
+ next_px = new_cursor_position n: next, i: next_i
+ #if prev is null and next is null
+ # parent_px = cur.parent.el.getBoundingClientRect()
+ undo_arg = true # just for readabality
+ removed = 0
+ for fixer in fixers
+ break if removed > 0
+ removed += fixer()
+ need_undo = false
+ if prev?
+ if prev_px?
+ new_prev_px = new_cursor_position n: prev, i: prev_i
+ if new_prev_px?
+ if new_prev_px.x isnt prev_px.x or new_prev_px.y isnt prev_px.y
+ need_undo = true
+ else
+ need_undo = true
+ else
+ console.log "this shouldn't happen, we remove spaces that don't locate"
+ if next? and not need_undo
+ if next_px?
+ new_next_px = new_cursor_position n: next, i: next_i
+ if new_next_px?
+ if new_next_px.x isnt next_px.x or new_next_px.y isnt next_px.y
+ need_undo = true
+ else
+ need_undo = true
+ #else
+ # console.log "removing space becase space after it is collapsed"
+ if need_undo
+ removed += fixer undo_arg
+ if removed > 0
+ return true
+ else
+ return false
+ # pass null at start/end of display:block
+ queue = (n, i) ->
+ next = n
+ next_i = i
+ next_px = null
+ advance = true
+ if cur?
+ removed = operate()
+ # don't advance (to the next character next time) if we removed a
+ # character from the same text node as ``next``, because doing so
+ # renumbers the indexes in that string
+ if removed and cur is next
+ advance = false
+ else
+ removed = false
+ unless removed
+ prev = cur
+ prev_i = cur_i
+ prev_px = cur_px
+ cur = next
+ cur_i = next_i
+ cur_px = next_px
+ return advance
+ queue null
+ iterate tree, queue
+ queue null
+
+ tree_remove_empty_text_nodes(tree)
+
+class PeachHTML5Editor
+ # Options: (all optional)
+ # editor_id: "id" attribute for outer-most element created by/for editor
+ # css_file: filename of a css file to style editable content
+ # on_init: callback for when the editable content is in place
+ constructor: (in_el, options) ->
+ @options = options ? {}
+ @in_el = in_el
+ @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
+ @outer_idoc # "document" object for @outer_iframe
+ @wrap2 = null # scrollbar is on this
+ @wrap2_offset = null
+ @wrap2_height = null # including padding
+ @iframe = null # iframe to hold editable content
+ @idoc = null # "document" object for @iframe
+ @cursor = null
+ @cursor_el = null
+ @cursor_visible = false
+ @cursor_ideal_x = null
+ @poll_for_blur_timeout = null
+ opt_fragment = @options.fragment ? true
+ @parser_opts = {}
+ if opt_fragment
+ @parser_opts.fragment = 'body'
+
+ @outer_iframe = domify document, iframe: {}
+ outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
+ if @options.editor_id?
+ @outer_iframe.setAttribute 'id', @options.editor_id
+ @outer_iframe.onload = =>
+ @outer_idoc = @outer_iframe.contentDocument
+ icss = domify @outer_idoc, style: children: [
+ domify @outer_idoc, text: css
+ ]
+ @outer_idoc.head.appendChild icss
+ @iframe = domify @outer_idoc, iframe: sandbox: 'allow-same-origin allow-scripts'
+ @iframe.onload = =>
+ @init_1()
+ timeout 200, => # firefox never fires this onload
+ @init_1() unless @init_1_called
+ @outer_idoc.body.appendChild(
+ domify @outer_idoc, div: id: 'wrap1', children: [
+ domify @outer_idoc, div: style: "position: absolute; top: 0; left: 1px; font-size: 10px", children: [ domify @outer_idoc, text: "Peach HTML5 Editor" ]
+ @wrap2 = domify @outer_idoc, div: id: 'wrap2', children: [
+ domify @outer_idoc, div: id: 'wrap3', children: [
+ @iframe
+ @overlay = domify @outer_idoc, div: id: 'overlay'
+ ]
+ ]
+ ]
+ )
+ outer_wrap = domify document, div: class: 'peach_html5_editor'
+ @in_el.parentNode.appendChild outer_wrap
+ outer_bounds = get_el_bounds outer_wrap
+ if outer_bounds.w < 300
+ outer_bounds.w = 300
+ if outer_bounds.h < 300
+ outer_bounds.h = 300
+ outer_iframe_style += "width: #{outer_bounds.w}px; height: #{outer_bounds.h}px;"
+ @outer_iframe.setAttribute 'style', outer_iframe_style
+ css = @generate_outer_css w: outer_bounds.w, h: outer_bounds.h
+ outer_wrap.appendChild @outer_iframe
+ init_1: -> # @iframe has loaded (but not it's css)
+ @idoc = @iframe.contentDocument
+ @init_1_called = true
+ # chromium doesn't resolve relative urls as though they were at the same domain
+ # so add a <base> tag
+ @idoc.head.appendChild domify @idoc, base: href: this_url_sans_path()
+ # don't let @iframe have scrollbars
+ @idoc.head.appendChild domify @idoc, style: children: [domify @idoc, text: "body { overflow: hidden; }"]
+ # load css file
+ if @options.css_file
+ istyle = domify @idoc, link: rel: 'stylesheet', href: @options.css_file
+ istyle.onload = =>
+ @init_2()
+ @idoc.head.appendChild istyle
+ else
+ @init_2()
+ init_2: -> # @iframe and it's css file(s) are ready
+ @overlay.onclick = (e) =>
+ @have_focus()
+ return event_return e, @onclick e
+ @overlay.ondoubleclick = (e) =>
+ @have_focus()
+ return event_return e, @ondoubleclick e
+ @outer_idoc.body.onkeyup = (e) =>
+ @have_focus()
+ return event_return e, @onkeyup e
+ @outer_idoc.body.onkeydown = (e) =>
+ @have_focus()
+ return event_return e, @onkeydown e
+ @outer_idoc.body.onkeypress = (e) =>
+ @have_focus()
+ return event_return e, @onkeypress e
+ @load_html @in_el.value
+ if @options.on_init?
+ @options.on_init()
+ generate_outer_css: (args) ->
+ w = args.w ? 300
+ h = args.h ? 300
+ inner_padding = args.inner_padding ? overlay_padding
+ frame_width = args.frame_width ? inner_padding
+ occupy = (left, top = left, right = left, bottom = top) ->
+ w -= left + right
+ h -= top + bottom
+ return Math.max(left, top, right, bottom)
+ ret = ''
+ ret += 'body {'
+ ret += 'margin: 0;'
+ ret += 'padding: 0;'
+ ret += 'color: black;'
+ ret += 'background: white;'
+ ret += '}'
+ ret += '#wrap1 {'
+ ret += "border: #{occupy 1}px solid black;"
+ ret += "padding: #{occupy frame_width}px;"
+ ret += '}'
+ ret += '#wrap2 {'
+ ret += "border: #{occupy 1}px solid black;"
+ @wrap2_height = h # including padding because padding scrolls
+ ret += "padding: #{occupy inner_padding}px;"
+ ret += "padding-right: #{inner_padding + occupy 0, 0, 15, 0}px;" # for scroll bar
+ ret += "width: #{w}px;"
+ ret += "height: #{h}px;"
+ ret += 'overflow-x: hidden;'
+ ret += 'overflow-y: scroll;'
+ ret += '}'
+ ret += '#wrap3 {'
+ ret += 'position: relative;'
+ ret += "width: #{w}px;"
+ ret += "min-height: #{h}px;"
+ ret += '}'
+ ret += 'iframe {'
+ ret += 'box-sizing: border-box;'
+ ret += 'margin: 0;'
+ ret += 'border: none;'
+ ret += 'padding: 0;'
+ ret += "width: #{w}px;"
+ #ret += "height: #{h}px;" # height auto-set when content set/changed
+ ret += '-ms-user-select: none;'
+ ret += '-webkit-user-select: none;'
+ ret += '-moz-user-select: none;'
+ ret += 'user-select: none;'
+ ret += '}'
+ ret += '#overlay {'
+ ret += 'position: absolute;'
+ ret += "left: -#{inner_padding}px;"
+ ret += "top: -#{inner_padding}px;"
+ ret += "right: -#{inner_padding}px;"
+ ret += "bottom: -#{inner_padding}px;"
+ ret += 'overflow: hidden;'
+ ret += '}'
+ ret += '.lightbox {'
+ ret += 'position: absolute;'
+ ret += 'background: rgba(100,100,100,0.2);'
+ ret += '}'
+ ret += '#cursor {'
+ ret += 'position: absolute;'
+ ret += 'width: 2px;'
+ ret += 'background: linear-gradient(0deg, rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1));'
+ ret += 'background-size: 200% 200%;'
+ ret += '-webkit-animation: blink 1s linear normal infinite;'
+ ret += 'animation: blink 1s linear normal infinite;'
+ ret += '}'
+ ret += '@-webkit-keyframes blink {'
+ ret += '0%{background-position:0% 0%}'
+ ret += '100%{background-position:0% -100%}'
+ ret += '}'
+ ret += '@keyframes blink { '
+ ret += '0%{background-position:0% 0%}'
+ ret += '100%{background-position:0% -100%}'
+ ret += '}'
+ ret += '.ann_box {'
+ ret += 'z-index: 5;'
+ ret += 'position: absolute;'
+ ret += 'border: 1px solid rgba(0,0,0,0.1);'
+ ret += 'outline: 1px solid rgba(255,255,255,0.1);' # in case there's a black background
+ ret += '}'
+ ret += '.ann_tag {'
+ ret += 'z-index: 10;'
+ ret += 'position: absolute;'
+ ret += 'font-size: 8px;'
+ ret += 'white-space: pre;'
+ ret += 'background: rgba(255,255,255,0.4);'
+ ret += '-ms-user-select: none;'
+ ret += '-webkit-user-select: none;'
+ ret += '-moz-user-select: none;'
+ ret += 'user-select: none;'
+ ret += '}'
+ return ret
+ overlay_event_to_inner_xy: (e) ->
+ unless @wrap2_offset?
+ @wrap2_offset = get_el_bounds @wrap2
+ x = e.pageX - overlay_padding
+ y = e.pageY - overlay_padding + @wrap2.scrollTop
+ return x: x - @wrap2_offset.x, y: y - @wrap2_offset.y
+ onclick: (e) ->
+ xy = @overlay_event_to_inner_xy e
+ new_cursor = xy_to_cursor @tree, xy
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @kill_cursor()
+ return false
+ ondoubleclick: (e) ->
+ return false
+ onkeyup: (e) ->
+ return if e.ctrlKey
+ return false if ignore_key_codes[e.keyCode]?
+ #return false if control_key_codes[e.keyCode]?
+ onkeydown: (e) ->
+ return if e.ctrlKey
+ return false if ignore_key_codes[e.keyCode]?
+ #return false if control_key_codes[e.keyCode]?
+ switch e.keyCode
+ when KEY_LEFT
+ if @cursor?
+ new_cursor = find_prev_cursor_position @tree, @cursor
+ else
+ new_cursor = first_cursor_position @tree
+ if new_cursor?
+ @move_cursor new_cursor
+ return false
+ when KEY_RIGHT
+ if @cursor?
+ new_cursor = find_next_cursor_position @tree, @cursor
+ else
+ new_cursor = last_cursor_position @tree
+ if new_cursor?
+ @move_cursor new_cursor
+ return false
+ when KEY_UP
+ if @cursor?
+ new_cursor = find_up_cursor_position @tree, @cursor, @cursor_ideal_x
+ if new_cursor?
+ saved_ideal_x = @cursor_ideal_x
+ @move_cursor new_cursor
+ @cursor_ideal_x = saved_ideal_x
+ else
+ # move cursor to first position in document
+ new_cursor = first_cursor_position @tree
+ if new_cursor?
+ @move_cursor new_cursor
+ return false
+ when KEY_DOWN
+ if @cursor?
+ new_cursor = find_down_cursor_position @tree, @cursor, @cursor_ideal_x
+ if new_cursor?
+ saved_ideal_x = @cursor_ideal_x
+ @move_cursor new_cursor
+ @cursor_ideal_x = saved_ideal_x
+ else
+ # move cursor to first position in document
+ new_cursor = last_cursor_position @tree
+ if new_cursor?
+ @move_cursor new_cursor
+ return false
+ when KEY_END
+ new_cursor = last_cursor_position @tree
+ if new_cursor?
+ @move_cursor new_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
+ @changed()
+ new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @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
+ onkeypress: (e) ->
+ return if e.ctrlKey
+ return false if ignore_key_codes[e.keyCode]?
+ char = e.charCode ? e.keyCode
+ if char and @cursor?
+ char = String.fromCharCode char
+ @insert_character @cursor.n, @cursor.i, char
+ @adjust_whitespace_style @cursor.n
+ @changed()
+ new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i + 1
+ if new_cursor
+ @move_cursor new_cursor
+ else
+ 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
+ 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 non-empty tag
+ # TODO factor out function for moving children around
+ # find containing block
+ containing_block = @cursor.n
+ loop
+ containing_block = containing_block.parent
+ return unless containing_block?
+ return if containing_block is @tree_parent
+ break if is_display_block containing_block
+ # FIXME only continue if first child, else inline merge here
+ # find contaning_block's previous sibling
+ prev = null
+ for n, contaning_block_i in contaning_block.parent.children
+ break if n is containing_block
+ prev = n
+ containing_block.el.parent.removeChild containing_block.el
+ containing_block.parent.children.splice contaning_block_i, 1
+ if prev is null
+ console.log "inimplemented: backspace at start of nested blocks" # FIXME
+ return
+ if is_display_block prev
+ # insert contents of containing_block into prev
+ ws_cleanup = false
+ if prev.children.length > 0
+ prev_last = prev.children[prev.children.length - 1]
+ if prev_last.type is 'text' and containing_block.children[0].type is 'text'
+ prev_last.text = prev_last.el.textContent = prev_last.text + containing_block.children[0].text
+ ws_cleanup = true
+ containing_block.children.shift()
+ for n in containing_block.children
+ # TODO insert into prev
+ # TODO adjust whitespace property of prev_last if ws_cleanup
+ else
+ # TODO insert contents of containing_block into prev.parent after prev
+ 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.el
+ @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
+ @adjust_whitespace_style @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]
+ @kill_cursor()
+ return
+ load_html: (html) ->
+ @tree = peach_parser.parse html, @parser_opts
+ if !@tree[0]?.parent
+ @tree = peach_parser.parse '<p style="white-space: pre-wrap"> </p>', @parser_opts
+ @tree_parent = @tree[0]?.parent
+ @tree_parent.el = @idoc.body
+ @clear_dom()
+ instantiate_tree @tree, @tree_parent.el
+ tree_dedup_space @tree
+ @changed()
+ changed: ->
+ @in_el.onchange = null
+ @in_el.value = @pretty_html @tree
+ @in_el.onchange = =>
+ @load_html @in_el.value
+ @adjust_iframe_height()
+ adjust_iframe_height: ->
+ s = @wrap2.scrollTop
+ # when the content gets shorter, the idoc's body tag will continue to
+ # report the old (too big) height in Chrome. The workaround is to
+ # shrink the iframe before the content height:
+ @iframe.style.height = "10px"
+ h = parseInt(@idoc.body.scrollHeight, 10)
+ @iframe.style.height = "#{h}px"
+ @wrap2.scrollTop = s
+ # 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"
+ has_collapsable_space: (tag) ->
+ for n in tag.children
+ if n.type is 'text'
+ for i in [0...n.text.length]
+ code = n.text.charCodeAt i
+ if code isnt 32 and is_space_code code
+ # tab, return
+ return true
+ # check for double spaces that don't surround insert location
+ continue if i is 0
+ if n.text.substr(i - 1, 2) is ' '
+ return true
+ if n.text.length > 0
+ if is_space_code n.text.charCodeAt 0
+ 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
+ # 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 adjust_whitespace_style()
+ insert_character: (n, i, char) ->
+ return if @cursor.n.parent is @tree_parent # FIXME implement text nodes at top level
+ parent = @cursor.n.parent
+ # insert the character
+ 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 =
+ n.text.substr(0, i) +
+ char +
+ n.text.substr(i)
+ n.el.nodeValue = n.text
+ # after calling this, you MUST call changed() and adjust_whitespace_style()
+ remove_character: (n, i) ->
+ n.text = n.text.substr(0, i) + n.text.substr(i + 1)
+ n.el.nodeValue = n.text
+ kill_cursor: -> # remove it, forget where it was
+ if @cursor_visible
+ @cursor_el.parentNode.removeChild @cursor_el
+ @cursor_visible = false
+ @cursor = null
+ @annotate null
+ move_cursor: (cursor) ->
+ @cursor_ideal_x = cursor.x
+ @cursor = cursor
+ unless @cursor_visible
+ @cursor_el = domify @outer_idoc, div: id: 'cursor'
+ @overlay.appendChild @cursor_el
+ @cursor_visible = true
+ @cursor_el.style.left = "#{cursor.x + overlay_padding - 1}px"
+ if cursor.h < 5
+ height = 12
+ else
+ height = cursor.h
+ @cursor_el.style.top = "#{cursor.y + overlay_padding + Math.round(height * .07)}px"
+ @cursor_el.style.height = "#{Math.round height * 0.82}px"
+ @annotate cursor.n
+ @scroll_into_view cursor.y, height
+ scroll_into_view: (y, h = 0) ->
+ y += overlay_padding # convert units from @idoc to @wrap2
+ # very top of document
+ if y <= breathing_room
+ @wrap2.scrollTop = 0
+ return
+ # very bottom of document
+ if y + h >= @wrap2.scrollHeight - breathing_room
+ @wrap2.scrollTop = @wrap2.scrollHeight - @wrap2_height
+ return
+ # The most scrolled up (lowest value for scrollTop) that would be OK
+ upmost = y + h + breathing_room - @wrap2_height
+ upmost = Math.max(upmost, 0)
+ # the most scrolled down (highest value for scrollTop) that would be OK
+ downmost = y - breathing_room
+ downmost = Math.min(downmost, @wrap2.scrollHeight - @wrap2_height)
+ if upmost > downmost # means h is too big to fit
+ # scroll so top is visible
+ @wrap2.scrollTop = downmost
+ return
+ if @wrap2.scrollTop < upmost
+ @wrap2.scrollTop = upmost
+ return
+ if @wrap2.scrollTop > downmost
+ @wrap2.scrollTop = downmost
+ return
+ return
+ annotate: (n) ->
+ while @matting.length > 0
+ @overlay.removeChild @matting[0]
+ @matting.shift()
+ return unless n?
+ prev_bounds = x: 0, y: 0, w: 0, h: 0
+ alpha = 0.1
+ while n?.el? and n isnt @tree_parent
+ if n.type is 'text'
+ n = n.parent
+ continue
+ bounds = get_el_bounds n.el
+ return unless bounds?
+ if bounds.x is prev_bounds.x and bounds.y is prev_bounds.y and bounds.w is prev_bounds.w and bounds.h is prev_bounds.h
+ n = n.parent
+ continue
+ ann_box = domify @outer_idoc, div: class: 'ann_box', style: "left: #{bounds.x - 1 + overlay_padding}px; top: #{bounds.y - 2 + overlay_padding}px; width: #{bounds.w}px; height: #{bounds.h}px" # outline: 1000px solid rgba(0,153,255,#{alpha});
+ @overlay.appendChild ann_box
+ @matting.push ann_box
+ ann_tag = domify @outer_idoc, div: class: 'ann_tag', style: "left: #{bounds.x + 1 + overlay_padding}px; top: #{bounds.y - 7 + overlay_padding}px", children: [domify @outer_idoc, text: " #{n.name} "]
+ @overlay.appendChild ann_tag
+ @matting.push ann_tag
+ n = n.parent
+ alpha *= 1.5
+ pretty_html: (tree, indent = '', parent_flags = pre_ish: false, block: true, want_nl: false) ->
+ ret = ''
+ want_nl = parent_flags.want_nl
+ prev_in_flow_is_text = false
+ prev_in_flow_is_block = false
+ for n, i in tree
+ # figure out flags
+ inner_flags = want_nl: true
+ is_br = false
+ switch n.type
+ when 'tag'
+ if n.name is 'br'
+ is_br = true
+ is_text = false
+ if n.el.currentStyle?
+ cs = n.el.currentStyle
+ whitespace = cs['white-space']
+ display = cs['display']
+ position = cs['position']
+ float = cs['float']
+ visibility = cs['visibility']
+ else
+ cs = @iframe.contentWindow.getComputedStyle(n.el, null)
+ whitespace = cs.getPropertyValue 'white-space'
+ display = cs.getPropertyValue 'display'
+ position = cs.getPropertyValue 'position'
+ float = cs.getPropertyValue 'float'
+ visibility = cs.getPropertyValue 'visibility'
+ if n.name is 'textarea'
+ inner_flags.pre_ish = true
+ else
+ inner_flags.pre_ish = whitespace.substr(0, 3) is 'pre'
+ switch float
+ when 'left', 'right'
+ in_flow = false
+ else
+ switch position
+ when 'absolute', 'fixed'
+ in_flow = false
+ else
+ if 'display' is 'none'
+ in_flow = false
+ else
+ switch visibility
+ when 'hidden', 'collapse'
+ in_flow = false
+ else # visible
+ in_flow = true
+ switch display
+ when 'inline', 'none'
+ inner_flags.block = false
+ is_block = in_flow_block = false
+ when 'inline-black'
+ inner_flags.block = true
+ is_block = in_flow_block = false
+ else # block, table, etc
+ inner_flags.block = true
+ is_block = true
+ in_flow_block = in_flow
+ when 'text'
+ is_text = true
+ is_block = false
+ in_flow = true
+ in_flow_block = false
+ else # 'comment', 'doctype'
+ is_text = false
+ is_block = false
+ in_flow = false
+ in_flow_block = false
+ # print whitespace if we can
+ unless parent_flags.pre_ish
+ unless prev_in_flow_is_text and is_br
+ if (i is 0 and parent_flags.block) or in_flow_block or prev_in_flow_is_block
+ if want_nl
+ ret += "\n"
+ ret += indent
+ switch n.type
+ when 'tag'
+ ret += '<' + n.name
+ attr_keys = []
+ for k of n.attrs
+ attr_keys.unshift k
+ #attr_keys.sort()
+ for k in attr_keys
+ ret += " #{k}"
+ if n.attrs[k].length > 0
+ ret += "=\"#{enc_attr n.attrs[k]}\""
+ ret += '>'
+ unless void_elements[n.name]?
+ if inner_flags.block
+ next_indent = indent + ' '
+ else
+ next_indent = indent
+ if n.children.length
+ ret += @pretty_html n.children, next_indent, inner_flags
+ ret += "</#{n.name}>"
+ when 'text'
+ ret += enc_text n.text
+ when 'comment'
+ ret += "<!--#{n.text}-->" # TODO encode?
+ when 'doctype'
+ ret += "<!DOCTYPE #{n.name}"
+ if n.public_identifier? and n.public_identifier.length > 0
+ ret += " \"#{n.public_identifier}\""
+ if n.system_identifier? and n.system_identifier.length > 0
+ ret += " \"#{n.system_identifier}\""
+ ret += ">"
+ want_nl = true
+ if in_flow
+ prev_in_flow_is_text = is_text
+ prev_in_flow_is_block = is_block or (in_flow and is_br)
+ if tree.length
+ # output final newline if allowed
+ unless parent_flags.pre_ish
+ if prev_in_flow_is_block or parent_flags.block
+ ret += "\n#{indent.substr 4}"
+ return ret
+ onblur: ->
+ @kill_cursor()
+ have_focus: ->
+ @editor_is_focused = true
+ @poll_for_blur()
+ poll_for_blur: ->
+ return if @poll_for_blur_timeout? # already polling
+ @poll_for_blur_timeout = timeout 150, =>
+ next_frame => # pause polling when browser knows we're not active/visible/etc.
+ @poll_for_blur_timeout = null
+ if document.activeElement is @outer_iframe
+ @poll_for_blur()
+ else
+ @editor_is_focused = false
+ @onblur()
+
+window.peach_html5_editor = (args...) ->
+ return new PeachHTML5Editor args...
+
+# test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])