overlay_padding = 10
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_:.]*$'
# text nodes don't have getBoundingClientRect(), so use selection api to find
# it.
-get_el_bounds = (el) ->
+get_el_bounds = window.bounds = (el) ->
if el.getBoundingClientRect?
rect = el.getBoundingClientRect()
else
range.setEnd el, end
rects = range.getClientRects()
if rects.length > 0
- rect = rects[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
bounding: range.getBoundingClientRect()
}
-# figure out the x/y coordinates of where the cursor should be if it's at
-# position ``i`` within text node ``n``
-# sometimes returns null (eg for whitespace that is not visible)
-window.cursor_to_xyh = cursor_to_xyh = (n, i) ->
- 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
+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?
- ret.x += ret.w
- else
- ret = text_range_bounds n.el, i, i + 1
- if ret?
- debug_dot_at n.el.ownerDocument, ret.x, ret.y
- return 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'
el.setAttribute k, v
return el
-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
- # TODO editor controls height...
- 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 += '}'
- 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;"
- 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 += 'height: 1em;' # FIXME adjust for hight of text
- ret += 'width: 2px;'
- ret += 'background: #444;'
- ret += '-webkit-animation: blink 1s steps(2, start) infinite;'
- ret += 'animation: blink 1s steps(2, start) infinite;'
- ret += '}'
- ret += '@-webkit-keyframes blink {'
- ret += 'to { visibility: hidden; }'
- ret += '}'
- ret += '@keyframes blink {'
- ret += 'to { visibility: hidden; }'
- 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 += '}'
- return ret
-# key codes:
+
+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_PAGE_UP = 33
KEY_PAGE_DOWN = 34
KEY_TAB = 9
-
-ignore_key_codes =
- '18': true # alt
- '20': true # capslock
- '17': true # ctrl
- '144': true # numlock
- '16': true # shift
- '91': true # windows "start" key
control_key_codes = # we react to these, but they aren't typing
'37': KEY_LEFT
'38': KEY_UP
return done if done
return done
-find_next_cursor_position = (tree, n, i) ->
- if n.type is 'text' and n.text.length > i
- orig_xyh = cursor_to_xyh n, i
- unless orig_xyh?
- console.log "ERROR: couldn't find xy for current cursor location"
- return
- for next_i in [i+1 .. n.text.length] # inclusive is valid (after last char)
- next_xyh = cursor_to_xyh n, next_i
- if next_xyh?
- if next_xyh.x > orig_xyh.x or next_xyh.y > orig_xyh.y
- return [n, next_i]
+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
- if cursor_to_xyh(node, 0)?
- found = node
+ new_cursor = new_cursor_position n: node, i: 0
+ if new_cursor?
+ found = new_cursor
return true
- if node is n
+ if node is cursor.n
state_before = false
return false
if found?
- return [found, 0]
+ return found
return null
-find_prev_cursor_position = (tree, n, i) ->
- if n? and n.type is 'text' and i > 0
- orig_xyh = cursor_to_xyh n, i
- unless orig_xyh?
- console.log "ERROR: couldn't find xy for current cursor location"
- return
- for prev_i in [i-1 .. 0]
- prev_xyh = cursor_to_xyh n, prev_i
- if prev_xyh?
- if prev_xyh.x < orig_xyh.x or prev_xyh.y < orig_xyh.y
- return [n, prev_i]
- return [n, i - 1]
- found_prev = n?
+last_cursor_position = (tree) ->
found = null
traverse_tree tree, (node) ->
if node.type is 'text'
- if node is n
- if found_prev?
- found = found_prev
- return true
- found_prev = node
+ cursor = new_cursor_position n: node, i: node.text.length
+ if cursor?
+ found = cursor
return false
- if found?
- if cursor_to_xyh found, found.text.length # text visible?
- return [found, found.text.length]
- return find_prev_cursor_position tree, found, 0
- return null
+ return found # maybe null
-find_loc_cursor_position = (tree, loc) ->
- for c in tree
- if c.type is 'tag' or c.type is 'text'
- bounds = get_el_bounds c.el
- continue if loc.x < bounds.x
- continue if loc.x > bounds.x + bounds.w
- continue if loc.y < bounds.y
- continue if loc.y > bounds.y + bounds.h
- if c.children.length
- ret = find_loc_cursor_position c.children, loc
+# 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
+
+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 c.type is 'text'
+ if n.type is 'text'
# click is within bounding box that contains all text.
- return [c, 0] if c.text.length is 0
- before_i = 0
- before = cursor_to_xyh c, before_i
- unless before?
- console.log "error: failed to find cursor pixel location for start of", c
- return
- after_i = c.text.length
- after = cursor_to_xyh c, after_i
- unless after?
- console.log "error: failed to find cursor pixel location for end of", c
- return
- if loc.y < before.y + before.h and loc.x < before.x
+ 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 loc.y > after.y and loc.x > after.x
+ if xy.y > after.y and xy.x > after.x
# console.log 'after last char on last line'
continue
- if loc.y < before.y
- console.log "Warning: click in bounding box but above first line"
+ if xy.y < before.y
+ console.log "Warning: click in text bounding box but above first line"
continue # above first line (runaround?)
- if loc.y > after.y + after.h
- console.log "Warning: click in bounding box but below last line", loc.y, after.y, after.h
+ 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
- cur_i = Math.round((before_i + after_i) / 2)
- cur = cursor_to_xyh c, cur_i
- unless loc?
- console.log "error: failed to find cursor pixel location for", c, cur_i
- return
- if loc.y < cur.y or (loc.y <= cur.y + cur.h and loc.x < cur.x)
- after_i = cur_i
+ 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_i = cur_i
before = cur
+ continue unless before? # signals failure to find a cursor position
# which one is closest?
- if Math.abs(before.x - loc.x) < Math.abs(after.x - loc.x)
- return [c, before_i]
+ if Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)
+ return before
else
- return [c, after_i]
+ return after
return null
# browsers collapse these (html5 spec calls these "space characters")
if block
cb null
# remove cur char
- remove = ->
- 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 true
- # undo remove()
- put_it_back = ->
- 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 false
+ 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
+ whitespace_to_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
+ 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]
bounds = text_range_bounds cur.el, cur_i, cur_i + 1
# consistent cases:
# 1. zero rects returned by getClientRects() means collapsed space
return remove()
# 2. width greater than zero means visible space
if bounds.w > 0
- return false
+ fixers.shift() # don't try removing
# now the weird edge cases...
#
# firefox and chromium both report zero width for characters at the end
#
# remove it from the dom, and if prev or next moves, put it back.
if prev? and not prev_px?
- prev_px = cursor_to_xyh prev, prev_i
+ prev_px = new_cursor_position n: prev, i: prev_i
if next? and not next_px?
- next_px = cursor_to_xyh next, next_i
+ next_px = new_cursor_position n: next, i: next_i
#if prev is null and next is null
# parent_px = cur.parent.el.getBoundingClientRect()
- remove()
- if prev?
- if prev_px?
- new_prev_px = cursor_to_xyh prev, prev_i
- if new_prev_px.x isnt prev_px.x or new_prev_px.y isnt prev_px.y
- return put_it_back()
- else
- console.log "this shouldn't happen, we remove spaces that don't locate"
- if next?
- if next_px?
- new_next_px = cursor_to_xyh next, next_i
- if new_next_px.x isnt next_px.x or new_next_px.y isnt next_px.y
- return put_it_back()
- #else
- # console.log "removing space becase space after it is collapsed"
- return true
+ 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
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 = []
+ @tree = null
@matting = []
- @inited = false # when iframes have loaded
+ @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
- @iframe_offset = null
+ @poll_for_blur_timeout = null
opt_fragment = @options.fragment ? true
@parser_opts = {}
if opt_fragment
domify @outer_idoc, text: css
]
@outer_idoc.head.appendChild icss
- @iframe = domify @outer_idoc, iframe: {}
+ @iframe = domify @outer_idoc, iframe: sandbox: 'allow-same-origin allow-scripts'
@iframe.onload = =>
- @init()
- setTimeout (=> @init() unless @inited), 200 # firefox never fires this 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
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 = outer_css w: outer_bounds.w, h: outer_bounds.h
+ css = @generate_outer_css w: outer_bounds.w, h: outer_bounds.h
outer_wrap.appendChild @outer_iframe
- init: -> # called by @iframe's onload (or timeout on firefox)
+ 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
- if @options.stylesheet
- # TODO test this
- @idoc.head.appendChild domify @idoc, style: src: @options.stylesheet
@load_html @in_el.value
- @inited = true
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 @iframe_offset?
- @iframe_offset = get_el_bounds @iframe
- x = e.pageX # TODO ?cross-browserify
- y = e.pageY + @wrap2.scrollTop # TODO ?cross-browserify
- # TODO adjust for scrolling
- return x: x - @iframe_offset.x, y: y - @iframe_offset.y
+ 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 = find_loc_cursor_position @tree, xy
+ new_cursor = xy_to_cursor @tree, xy
if new_cursor?
@move_cursor new_cursor
else
switch e.keyCode
when KEY_LEFT
if @cursor?
- new_cursor = find_prev_cursor_position @tree, @cursor...
- if new_cursor?
- @move_cursor new_cursor
+ new_cursor = find_prev_cursor_position @tree, @cursor
else
- for c in @tree
- new_cursor = find_next_cursor_position @tree, c, -1
- if new_cursor?
- @move_cursor new_cursor
- break
- return false
- when KEY_UP
+ 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...
- if new_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 = @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 false unless new_cursor?
+ # done early if we're already left of old cursor position
+ if new_cursor.x <= @cursor.x
@move_cursor new_cursor
+ return false
+ 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 > @cursor.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 (@cursor.x - new_cursor.x) < (prev_cursor.x - @cursor.x)
+ @move_cursor new_cursor
+ else
+ @move_cursor prev_cursor
+ else
+ # new_cursor on wrong line, use prev_cursor
+ @move_cursor prev_cursor
+ else
+ # can't go any further prev, use prev_cursor
+ @move_cursor prev_cursor
else
- for c in @tree
- new_cursor = find_prev_cursor_position @tree, c, -1
- if new_cursor?
- @move_cursor new_cursor
- break
+ # 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 = @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 false unless new_cursor?
+ # done early if we're already right of old cursor position
+ if new_cursor.x >= @cursor.x
+ # this would be strange, but could happen due to runaround
+ @move_cursor new_cursor
+ return false
+ 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 < @cursor.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 - @cursor.x) < (@cursor.x - prev_cursor.x)
+ @move_cursor new_cursor
+ else
+ @move_cursor prev_cursor
+ else
+ # new_cursor on wrong line, use prev_cursor
+ @move_cursor prev_cursor
+ else
+ # can't go any further prev, use prev_cursor
+ @move_cursor prev_cursor
+ 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
return false
when KEY_BACKSPACE
return false unless @cursor?
- return false unless @cursor[1] > 0
- @cursor[0].text = @cursor[0].text.substr(0, @cursor[1] - 1) + @cursor[0].text.substr(@cursor[1])
- @cursor[0].el.nodeValue = @cursor[0].text
- @move_cursor [@cursor[0], @cursor[1] - 1]
+ 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
+ if new_cursor?
+ @move_cursor new_cursor
+ else
+ @kill_cursor()
return false
when KEY_DELETE
return false unless @cursor?
- return false unless @cursor[1] < @cursor[0].text.length
- @cursor[0].text = @cursor[0].text.substr(0, @cursor[1]) + @cursor[0].text.substr(@cursor[1] + 1)
- @cursor[0].el.nodeValue = @cursor[0].text
- @move_cursor [@cursor[0], @cursor[1]]
+ 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
return false
onkeypress: (e) ->
return if e.ctrlKey
return false if ignore_key_codes[e.keyCode]?
- return false if control_key_codes[e.keyCode]? # handled in keydown
char = e.charCode ? e.keyCode
if char and @cursor?
char = String.fromCharCode char
- if @cursor[1] is 0
- @cursor[0].text = char + @cursor[0].text
- else if @cursor[1] is @cursor[0].text.length - 1
- @cursor[0].text += char
- else
- @cursor[0].text =
- @cursor[0].text.substr(0, @cursor[1]) +
- char +
- @cursor[0].text.substr(@cursor[1])
- @cursor[0].el.nodeValue = @cursor[0].text
- @move_cursor [@cursor[0], @cursor[1] + 1]
+ @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
clear_dom: -> # remove all the editable content (and cursor, overlays, etc)
while @idoc.body.childNodes.length
@in_el.value = @pretty_html @tree
@in_el.onchange = =>
@load_html @in_el.value
- @iframe.style.height = "0"
- @iframe.style.height = "#{@idoc.body.scrollHeight}px"
+ @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
+ # after calling this, you MUST call changed() and adjust_whitespace_style()
+ insert_character: (n, i, char) ->
+ parent = @cursor.n.parent
+ return unless parent
+ return unless parent.el?
+ # insert the character
+ if i is 0
+ n.text = char + n.text
+ else if i is n.text.length
+ 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
- @matt null
+ @annotate null
move_cursor: (cursor) ->
- loc = cursor_to_xyh cursor[0], cursor[1]
- unless loc?
- console.log "error: tried to move cursor to position that has no pixel location", cursor[0], cursor[1]
- return
@cursor = cursor
- # replace cursor element, to reset blink animation
- if @cursor_visible
- @cursor_el.parentNode.removeChild @cursor_el
- @cursor_el = domify @outer_idoc, div: id: 'cursor'
- @overlay.appendChild @cursor_el
- @cursor_visible = true
- @cursor_el.style.left = "#{loc.x + overlay_padding - 1}px"
- if loc.h < 5
+ 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 = loc.h
- @cursor_el.style.top = "#{loc.y + overlay_padding + Math.round(height * .07)}px"
+ 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"
- @matt cursor[0]
- matt: (n) ->
+ @annotate cursor.n
+ @scroll_into_view cursor.y, height
+ scroll_into_view: (y, h = 0) ->
+ closest = 30 # setting: smallest pixels from top/bottom of screet that's OK
+ y += overlay_padding # convert units from @idoc to @wrap2
+ # very top of document
+ if y <= closest
+ @wrap2.scrollTop = 0
+ return
+ # very bottom of document
+ if y + h >= @wrap2.scrollHeight - closest
+ @wrap2.scrollTop = @wrap2.scrollHeight - @wrap2_height
+ return
+ # The most scrolled up (lowest value for scrollTop) that would be OK
+ upmost = y + h + closest - @wrap2_height
+ upmost = Math.max(upmost, 0)
+ # the most scrolled down (highest value for scrollTop) that would be OK
+ downmost = y - closest
+ 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()
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
- matt = 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 matt
- @matting.push matt
- ann = 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
- @matting.push ann
+ 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) ->
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
if 'display' is 'none'
in_flow = false
else
- in_flow = true
+ switch visibility
+ when 'hidden', 'collapse'
+ in_flow = false
+ else # visible
+ in_flow = true
switch display
when 'inline', 'none'
inner_flags.block = false
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...