preview in iframe, load_html method

[peach-html5-editor.git] / editor.coffee

diff --git a/editor.coffee b/editor.coffee
index 4de3b81..4805550 100644 (file)
--- a/editor.coffee
+++ b/editor.coffee
@@ -14,3 +14,85 @@
 # 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/>.
 
+# 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 '&amp;' if (amp)
+               return '&quot;' if (quote)
+               return '&nbsp;'
+
+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
+}
+dom_to_html = (dom) ->
+       ret = ''
+       for el in dom
+               switch el.type
+                       when wheic_parser.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 wheic_parser.TYPE_TEXT
+                               ret += el.text
+                       when wheic_parser.TYPE_COMMENT
+                               ret += "<!--#{el.text}-->"
+                       when wheic_parser.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
+
+wysiwyg = (el, options = {}) ->
+       opt_fragment = options.fragment ? true
+       parser_opts = {}
+       if opt_fragment
+               parser_opts.fragment = 'body'
+       editor_instance = {
+               dom: wheic_parser.parse el.value, parser_opts
+               iframe: document.createElement('iframe')
+               load_html: (html) ->
+                       @dom = wheic_parser.parse el.value, parser_opts
+       }
+       idoc = editor_instance.iframe.contentDocument
+       if options.stylesheet # TODO test this
+               istyle = idoc.createElement 'style'
+               istyle.setAttribute 'src', options.stylesheet
+               idoc.head.appendChild istyle
+       el.parentNode.appendChild editor_instance.iframe
+       return editor_instance
+
+window.wheic = {
+       wysiwyg: wysiwyg
+       dom_to_html: dom_to_html
+}
+
+# test in browser: wheic(document.getElementsByTagName('textarea')[0])