Better compatibility with the Codemirror editor and the markdown circuit extension.

djangoapps/simplewiki/mdx_circuit.py

@@ -5,12 +5,14 @@ Image Circuit Extension for Python-Markdown
 
 circuit:name becomes the circuit. 
 '''
+import markdown
+import re
 
 import simplewiki.settings as settings
 
 from mitxmako.shortcuts import render_to_response, render_to_string
 
-import markdown
+
 try:
     # Markdown 2.1.0 changed from 2.0.3. We try importing the new version first,
     # but import the 2.0.3 version if it fails
@@ -22,22 +24,40 @@ class CircuitExtension(markdown.Extension):
     def __init__(self, configs):
         for key, value in configs :
             self.setConfig(key, value)
+            
     
-    def add_inline(self, md, name, klass, re):
-        pattern = klass(re)
+    def extendMarkdown(self, md, md_globals):
+        ## Because Markdown treats contigous lines as one block of text, it is hard to match
+        ## a regex that must occupy the whole line (like the circuit regex). This is why we have
+        ## a preprocessor that inspects the lines and replaces the matched lines with text that is
+        ## easier to match
+        md.preprocessors.add('circuit',  CircuitPreprocessor(md), "_begin")
+        
+        pattern = CircuitLink(r'processed-schematic:(?P<data>.*?)processed-schematic-end')
         pattern.md = md
         pattern.ext = self
-        md.inlinePatterns.add(name, pattern, "<reference")
+        md.inlinePatterns.add('circuit', pattern, "<reference")
+
+
+class CircuitPreprocessor(markdown.preprocessors.Preprocessor):
+    preRegex = re.compile(r'^circuit-schematic:(?P<data>.*)$')
     
-    def extendMarkdown(self, md, md_globals):
-        self.add_inline(md, 'circuit', CircuitLink, r'^circuit-schematic:(?P<data>.*)$')
+    def run(self, lines):
+            new_lines = []
+            for line in lines:
+                m = self.preRegex.match(line)
+                if m:
+                    new_lines.append('processed-schematic:{0}processed-schematic-end'.format( m.group('data') ))
+                else:
+                    new_lines.append(line)
+            return new_lines
+
 
 class CircuitLink(markdown.inlinepatterns.Pattern):
     def handleMatch(self, m):
         data = m.group('data')
-        
         ##TODO: We need to html escape the data
-        return etree.fromstring("<input type='hidden' parts='' value='" + data + "' analyses='' class='schematic ctrls'/>")
+        return etree.fromstring("<input type='hidden' parts='' value='" + data + "' analyses='' class='schematic ctrls' width='150' height='150'/>")
         
     
 def makeExtension(configs=None) :

djangoapps/simplewiki/models.py

@@ -276,7 +276,6 @@ class Revision(models.Model):
         # Create pre-parsed contents - no need to parse on-the-fly
         ext = WIKI_MARKDOWN_EXTENSIONS
         ext += ["wikipath(base_url=%s)" % reverse('wiki_view', args=('/',))]
-        print ext
         self.contents_parsed = markdown(self.contents,
                                         extensions=ext,
                                         safe_mode='escape',)

static/js/CodeMirror/codemirror.js

@@ -980,7 +980,7 @@ var CodeMirror = (function() {
         maxWidth = scroller.clientWidth;
         var curNode = lineDiv.firstChild, heightChanged = false;
         doc.iter(showingFrom, showingTo, function(line) {
-          if (!line.hidden && !line.widgetFunction) { //TODO: We should handle widget blocks better here
+          if (!line.hidden && !line.widgetFunction) {
             var height = Math.round(curNode.offsetHeight / th) || 1;
             if (line.widgetFunction) height = line.widgetFunction.size(line.text).height  / textHeight();
             if (line.height != height) {

static/js/CodeMirror/mitx_markdown.js

@@ -77,6 +77,8 @@ CodeMirror.defineMode("mitx_markdown", function(cmCfg, modeCfg) {
       update_schematics();
       var schmInput = node.firstChild;
       schmInput.codeMirrorLine = line;
+      schmInput.schematic.always_draw_grid = true;
+      schmInput.schematic.redraw_background();
       $(node).leanModal();
     }
   };

templates/simplewiki_edit.html

@@ -39,7 +39,7 @@
         mode: 'mitx_markdown',
         matchBrackets: true,
         theme: "default",
-        lineWrapping: false,
+        lineWrapping: true,
       });
       
       //Store the inital contents so we can compare for unsaved changes