# SETTINGS
overlay_padding = 10
-TYPE_TAG = peach_parser.TYPE_TAG
-TYPE_TEXT = peach_parser.TYPE_TEXT
-TYPE_COMMENT = peach_parser.TYPE_COMMENT
-TYPE_DOCTYPE = peach_parser.TYPE_DOCTYPE
+timeout = (ms, cb) -> return setTimeout cb, ms
debug_dot_at = (doc, x, y) ->
return # disabled
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)
range = document.createRange()
if n.text.length is 0
ret = text_range_bounds n.el, 0, 0
- if i is n.text.length
+ else if i is n.text.length
ret = text_range_bounds n.el, i - 1, i
if ret?
ret.x += ret.w
track: true
wbr: true
}
-dom_to_html = (dom) ->
- ret = ''
- for el in dom
- switch el.type
- when TYPE_TAG
- ret += '<' + el.name
- attr_keys = []
- for k of el.attrs
- attr_keys.unshift k
- #attr_keys.sort()
- for k in attr_keys
- ret += " #{k}"
- if el.attrs[k].length > 0
- ret += "=\"#{enc_attr el.attrs[k]}\""
- ret += '>'
- unless void_elements[el.name]
- if el.children.length
- ret += dom_to_html el.children
- ret += "</#{el.name}>"
- when TYPE_TEXT
- ret += enc_text el.text
- when TYPE_COMMENT
- ret += "<!--#{el.text}-->"
- when TYPE_DOCTYPE
- ret += "<!DOCTYPE #{el.name}"
- if el.public_identifier? and el.public_identifier.length > 0
- ret += " \"#{el.public_identifier}\""
- if el.system_identifier? and el.system_identifier.length > 0
- ret += " \"#{el.system_identifier}\""
- ret += ">\n"
- return ret
+# 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
inner_padding = args.inner_padding ? overlay_padding
frame_width = args.frame_width ? inner_padding
# TODO editor controls height...
- shrink = (px) ->
- w -= 2 * px
- h -= 2 * px
- return px
+ 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: #{shrink 1}px solid black;"
- ret += "padding: #{shrink frame_width}px;"
+ ret += "border: #{occupy 1}px solid black;"
+ ret += "padding: #{occupy frame_width}px;"
ret += '}'
ret += '#wrap2 {'
- ret += "border: #{shrink 1}px solid black;"
- ret += "padding: #{shrink inner_padding}px;"
+ 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 += 'border: none;'
ret += 'padding: 0;'
ret += "width: #{w}px;"
- ret += "height: #{h}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;'
'9': KEY_TAB
instantiate_tree = (tree, parent) ->
- for c in tree
+ remove = []
+ for c, i in tree
switch c.type
- when TYPE_TEXT
+ when 'text'
c.el = parent.ownerDocument.createTextNode c.text
parent.appendChild c.el
- when TYPE_TAG
+ when 'tag'
+ if c.name in ['script', 'object', 'iframe', 'link']
+ # TODO put placeholders instead
+ remove.unshift i
# TODO create in correct namespace
c.el = parent.ownerDocument.createElement c.name
for k, v of c.attrs
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, state, cb) ->
+traverse_tree = (tree, cb) ->
+ done = false
for c in tree
- cb c, state
- break if state.done?
+ done = cb c
+ return done if done
if c.children.length
- traverse_tree c.children, state, cb
- break if state.done?
- return state
-# find the next element in tree (and decendants) that is after n and can contain text
-# TODO make it so cursor can go places that don't have text but could
+ done = traverse_tree c.children, cb
+ return done if done
+ return done
+
find_next_cursor_position = (tree, n, i) ->
- if n? and n.type is TYPE_TEXT and n.text.length > 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"
if next_xyh?
if next_xyh.x > orig_xyh.x or next_xyh.y > orig_xyh.y
return [n, next_i]
- found = traverse_tree tree, before: n?, (node, state) ->
- if node.type is TYPE_TEXT and state.before is false
- state.node = node
- state.done = true
+ 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
+ return true
if node is n
- state.before = false
- if found.node?
- return [found.node, 0]
+ state_before = false
+ return false
+ if found?
+ return [found, 0]
return null
-# TODO make it so cursor can go places that don't have text but could
find_prev_cursor_position = (tree, n, i) ->
- if n? and n.type is TYPE_TEXT and i > 0
+ 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"
if prev_xyh.x < orig_xyh.x or prev_xyh.y < orig_xyh.y
return [n, prev_i]
return [n, i - 1]
- found = traverse_tree tree, before: n?, (node, state) ->
- if node.type is TYPE_TEXT
- unless n?
- state.node = node
- state.done = true
+ found_prev = n?
+ found = null
+ traverse_tree tree, (node) ->
+ if node.type is 'text'
if node is n
- if state.prev?
- state.node = state.prev
- state.done = true
- if node
- state.prev = node
- if found.node?
- return [found.node, found.node.text.length]
+ if found_prev?
+ found = found_prev
+ return true
+ found_prev = node
+ 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
find_loc_cursor_position = (tree, loc) ->
for c in tree
- if c.type is TYPE_TAG or c.type is TYPE_TEXT
+ 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
if c.children.length
ret = find_loc_cursor_position c.children, loc
return ret if ret?
- if c.type is TYPE_TEXT
+ if c.type is 'text'
# click is within bounding box that contains all text.
return [c, 0] if c.text.length is 0
before_i = 0
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
first = true
removed_char = null
+ tree_remove_empty_text_nodes(tree)
+
iterate = (tree, cb) ->
for n in tree
- if n.type is TYPE_TEXT
+ 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 TYPE_TAG
+ if n.type is 'tag'
block = is_display_block n.el
if block
cb null
return put_it_back()
#else
# console.log "removing space becase space after it is collapsed"
- # if there's no prev or next (single space inside a block-level element?) check
- # TODO scrapt this, or fix it so it works when there's no parent
- # if prev is null and next is null
- # new_parent_px = cur.parent.el.getBoundingClientRect()
- # if new_parent_px.left isnt parent_px.left or new_parent_px.top isnt parent_px.top or new_parent_px.right isnt parent_px.right or new_parent_px.bottom isnt parent_px.bottom
- # console.log "WEIRD: parent moved"
- # return put_it_back()
- # we didn't put it back
return true
# pass null at start/end of display:block
queue = (n, i) ->
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
+ # on_init: callback for when the editable content is in place
constructor: (in_el, options) ->
@options = options ? {}
@in_el = in_el
@tree = []
- @initialized = false # when iframes have loaded
+ @matting = []
+ @inited = false # when iframes have loaded
@outer_iframe # iframe to hold editor
@outer_idoc # "document" object for @outer_iframe
+ @wrap2 = null # scrollbar is on this
@iframe = null # iframe to hold editable content
@idoc = null # "document" object for @iframe
@cursor = null
@cursor_el = null
@cursor_visible = false
+ @iframe_offset = null
opt_fragment = @options.fragment ? true
@parser_opts = {}
if opt_fragment
@iframe = domify @outer_idoc, iframe: {}
@iframe.onload = =>
@init()
+ setTimeout (=> @init() unless @inited), 200 # firefox never fires this onload
@outer_idoc.body.appendChild(
domify @outer_idoc, div: id: 'wrap1', children: [
- domify @outer_idoc, div: id: 'wrap2', children: [
+ @wrap2 = domify @outer_idoc, div: id: 'wrap2', children: [
domify @outer_idoc, div: id: 'wrap3', children: [
@iframe
@overlay = domify @outer_idoc, div: id: 'overlay'
@outer_iframe.setAttribute 'style', outer_iframe_style
css = outer_css w: outer_bounds.w, h: outer_bounds.h
outer_wrap.appendChild @outer_iframe
- init: -> # called by @iframe's onload
+ init: -> # called by @iframe's onload (or timeout on firefox)
@idoc = @iframe.contentDocument
@overlay.onclick = (e) =>
- return @onclick e
+ return event_return e, @onclick e
+ @overlay.ondoubleclick = (e) =>
+ return event_return e, @ondoubleclick e
@outer_idoc.body.onkeyup = (e) =>
- return @onkeyup e
+ return event_return e, @onkeyup e
@outer_idoc.body.onkeydown = (e) =>
- return @onkeydown e
+ return event_return e, @onkeydown e
@outer_idoc.body.onkeypress = (e) =>
- return @onkeypress e
+ 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
- @initialized = true
- if @options.initialized_cb?
- @options.initialized_cb()
+ @inited = true
+ if @options.on_init?
+ @options.on_init()
+ 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
onclick: (e) ->
- x = (e.offsetX ? e.layerX) - overlay_padding
- y = (e.offsetY ? e.layerY) - overlay_padding
- new_cursor = find_loc_cursor_position @tree, x: x, y: y
+ xy = @overlay_event_to_inner_xy e
+ new_cursor = find_loc_cursor_position @tree, xy
if new_cursor?
@move_cursor new_cursor
+ return false
+ ondoubleclick: (e) ->
+ return false
onkeyup: (e) ->
return if e.ctrlKey
return false if ignore_key_codes[e.keyCode]?
@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]
+ @changed()
return false
when KEY_DELETE
return false unless @cursor?
@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]]
+ @changed()
return false
when KEY_ENTER
return false
tree_dedup_space @tree
@changed()
changed: ->
- # FIXME don't export cursor placeholder (when cursor is between space characters)
@in_el.onchange = null
- @in_el.value = dom_to_html @tree
+ @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"
kill_cursor: -> # remove it, forget where it was
if @cursor_visible
@cursor_el.parentNode.removeChild @cursor_el
@cursor_visible = false
@cursor = null
+ @matt 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, to reset blink animation
+ # 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
- # TODO figure out x,y coords for cursor
@cursor_el.style.left = "#{loc.x + overlay_padding - 1}px"
@cursor_el.style.top = "#{loc.y + overlay_padding}px"
+ @matt cursor[0]
+ matt: (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?
+ 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
+ matt = domify @outer_idoc, div: style: "position: absolute; left: #{bounds.x - 1 + overlay_padding}px; top: #{bounds.y - 1 + overlay_padding}px; width: #{bounds.w}px; height: #{bounds.h}px; outline: 1000px solid rgba(0,153,255,#{alpha}); border: 1px solid rgba(0,0,0,.1)"
+ @overlay.appendChild matt
+ @matting.push matt
+ ann = domify @outer_idoc, div: style: "position: absolute; left: #{bounds.x - 2 + overlay_padding}px; top: #{bounds.y - 6 + overlay_padding}px; font-size: 8px", children: [domify @outer_idoc, text: "<#{n.name}>"]
+ @overlay.appendChild ann
+ @matting.push ann
+ 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']
+ 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'
+ 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
+ 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
window.peach_html5_editor = (args...) ->
return new PeachHTML5Editor args...
Got questions, comments, patches, etc.? Contact Jason Woofenden