# implementation: insert a span tag where we want the cursor, and ask the
# browser where it put that span
cursor_to_loc = (n, i) ->
- span = domify span: style: "height: 1em"
+ span = domify span: style: "height: 1em; width: 0", children: [domify text: "|"]
parent = n.el.parentNode
if i is 0
# cursor at start of text
if c.children.length
instantiate_tree c.children, c.el
-find_next_cursor_position = (n, i) ->
- if n.type is TYPE_TEXT
- if n.text.length > i
- return [n, i + 1]
- return null
- if n.type is TYPE_TAG
- if n.children.length
- for c in n.children
- ret = find_next_cursor_position c, -1
- return ret if ret?
- return null
- else
- # FIXME create an empty text node if needed depending on tag name
+traverse_tree = (tree, state, cb) ->
+ for c in tree
+ cb c, state
+ break if state.done?
+ if c.children.length
+ traverse_tree c.children, state, cb
+ break if state.done?
+ return state
+# find the next element in top (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
+find_next_cursor_position = (top, n, i) ->
+ if n? and n.type is TYPE_TEXT and n.text.length > i
+ return [n, i + 1]
+ found = traverse_tree top, before: n?, (node, state) ->
+ if node.type is TYPE_TEXT and state.before is false
+ state.node = node
+ state.done = true
+ if node is n
+ state.before = false
+ if found.node?
+ return [found.node, 0]
+ return null
+
+# TODO make it so cursor can go places that don't have text but could
+find_prev_cursor_position = (top, n, i) ->
+ if n? and n.type is TYPE_TEXT and i > 0
+ return [n, i - 1]
+ found = traverse_tree top, before: n?, (node, state) ->
+ if node.type is TYPE_TEXT
+ unless n?
+ state.node = node
+ state.done = true
+ 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]
return null
class PeachHTML5Editor
#return false if control_key_codes[e.keyCode]?
switch e.keyCode
when KEY_LEFT
- return false
- when KEY_UP
- return false
- when KEY_RIGHT
- window.ce = @cursor_el
if @cursor?
- new_cursor = find_next_cursor_position @cursor...
+ new_cursor = find_prev_cursor_position @tree, @cursor...
if new_cursor?
@move_cursor new_cursor
- else
- after = false
- for c in @cursor[0].parent.children
- if after
- new_cursor = find_next_cursor_position c, -1
- if new_cursor?
- @move_cursor new_cursor
- break
- if c is @cursor[0]
- after = true
else
for c in @tree
- new_cursor = find_next_cursor_position c, -1
+ new_cursor = find_next_cursor_position @tree, c, -1
if new_cursor?
@move_cursor new_cursor
break
return false
- when KEY_DOWN
- return false
- when KEY_END
- return false
- when KEY_BACKSPACE
- return false
- when KEY_DELETE
- return false
- when KEY_ENTER
- return false
- when KEY_ESCAPE
- return false
- when KEY_HOME
- return false
- when KEY_INSERT
- return false
- when KEY_PAGE_UP
- return false
- when KEY_PAGE_DOWN
- return false
- when KEY_TAB
- return false
- @idoc.body.onkeypress = (e) =>
- return if e.ctrlKey
- return false if ignore_key_codes[e.keyCode]?
- # in firefox, keyCode is only set for non-typing keys
- switch e.keyCode
- when KEY_LEFT
- return false
when KEY_UP
return false
when KEY_RIGHT
- console.log "hi"
- console.log @cursor
if @cursor?
- new_cursor = find_next_cursor_position @cursor...
+ new_cursor = find_next_cursor_position @tree, @cursor...
if new_cursor?
@move_cursor new_cursor
- else
- after = false
- for c in @cursor[0].parent.children
- if after
- new_cursor = find_next_cursor_position c, -1
- if new_cursor?
- @move_cursor new_cursor
- break
- if c is @cursor[0]
- after = true
else
for c in @tree
- new_cursor = find_next_cursor_position c, -1
+ new_cursor = find_prev_cursor_position @tree, c, -1
if new_cursor?
@move_cursor new_cursor
break
return false
when KEY_TAB
return false
+ @idoc.body.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
- @in_el.value += String.fromCharCode char
- @load_html @in_el.value
+ 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]
return false
if options.stylesheet # TODO test this
istyle = @idoc.createElement 'style'
@clear_dom()
instantiate_tree @tree, @idoc.body
move_cursor: (cursor) ->
+ return if @cursor? and cursor? and @cursor[0] is cursor[0] and @cursor[1] is cursor[1]
@cursor = cursor
- unless @cursor_el?
- @cursor_el = domify div: id: 'peach_html5_editor_cursor'
- unless @cursor_visible
- @idoc.body.appendChild @cursor_el
- @cursor_visible = true
+ # replace cursor, to reset blink animation
+ if @cursor_visible
+ @cursor_el.parentNode.removeChild @cursor_el
+ @cursor_el = domify div: id: 'peach_html5_editor_cursor'
+ @idoc.body.appendChild @cursor_el
+ @cursor_visible = true
# TODO figure out top/left coords for cursor
loc = cursor_to_loc cursor[0], cursor[1]
@cursor_el.style.top = "#{loc.top}px"
Got questions, comments, patches, etc.? Contact Jason Woofenden