Loading a file works

IPython/html/services/contents/filemanager.py

@@ -9,6 +9,7 b' import io'
 import os
 import shutil
 from contextlib import contextmanager
+import mimetypes
 
 from tornado import web
 
@@ -204,6 +205,7 b' class FileContentsManager(ContentsManager):'
         model['created'] = created
         model['content'] = None
         model['format'] = None
+        model['mimetype'] = None
         try:
             model['writable'] = os.access(os_path, os.W_OK)
         except OSError:
@@ -264,8 +266,11 b' class FileContentsManager(ContentsManager):'
         """
         model = self._base_model(path)
         model['type'] = 'file'
+
+        os_path = self._get_os_path(path)
+        model['mimetype'] = mimetypes.guess_type(os_path)[0] or 'text/plain'
+
         if content:
-            os_path = self._get_os_path(path)
             if not os.path.isfile(os_path):
                 # could be FIFO
                 raise web.HTTPError(400, "Cannot get content of non-file %s" % os_path)

IPython/html/static/texteditor/js/main.js

@@ -5,19 +5,56 b' require(['
     'jquery',
     'base/js/utils',
     'base/js/page',
+    'contents',
     'codemirror/lib/codemirror',
+    'codemirror/mode/meta',
     'custom/custom',
 ], function(
     $, 
     utils,
     page,
+    contents,
     CodeMirror
     ){
     page = new page.Page();
 
     var base_url = utils.get_body_data('baseUrl');
-    var cm_instance = CodeMirror($('#texteditor-container')[0]);
-    
-    page.show();
+    contents = new contents.Contents({base_url: base_url});
 
+    var file_path = utils.get_body_data('filePath');
+    var ix = file_path.lastIndexOf("/");
+    var dir_path, basename;
+    if (ix == -1) {
+        dir_path = '';
+        basename = file_path;
+    } else {
+        dir_path = file_path.substring(0, ix);
+        basename = file_path.substring(ix);
+    }
+    contents.load(dir_path, basename, {
+        success: function(model) {
+            page.show();
+            if (model.type === "file" && model.format === "text") {
+                console.log(modeinfo);
+                var cm = CodeMirror($('#texteditor-container')[0], {
+                    value: model.content,
+                });
+                
+                // Find and load the highlighting mode
+                var modeinfo = CodeMirror.findModeByMIME(model.mimetype);
+                if (modeinfo) {
+                    utils.requireCodeMirrorMode(modeinfo.mode, function() {
+                        cm.setOption('mode', modeinfo.mode);
+                    });
+                }
+                
+                // Attach to document for debugging
+                document.cm_instance = cm;
+            } else {
+                $('#texteditor-container').append(
+                    $('<p/>').text(dir_path + " is not a text file")
+                );
+            }
+        }
+    });
 });

IPython/html/templates/texteditor.html

@@ -2,13 +2,19 b''
 
 {% block title %}{{page_title}}{% endblock %}
 
+{% block stylesheet %}
+<link rel="stylesheet" href="{{ static_url('components/codemirror/lib/codemirror.css') }}">
+
+{{super()}}
+{% endblock %}
+
 {% block params %}
 
 data-base-url="{{base_url}}"
+data-file-path="{{file_path}}"
 
 {% endblock %}
 
-
 {% block site %}
 
 <div id="texteditor-container"></div>

IPython/html/texteditor/handlers.py

@@ -6,12 +6,21 b''
 
 from tornado import web
 from ..base.handlers import IPythonHandler, file_path_regex
+from ..utils import url_escape
 
 class EditorHandler(IPythonHandler):
     """Render the terminal interface."""
     @web.authenticated
     def get(self, path, name):
-        self.write(self.render_template('texteditor.html'))
+        path = path.strip('/')
+        if not self.contents_manager.file_exists(name, path):
+            raise web.HTTPError(404, u'File does not exist: %s/%s' % (path, name))
+
+        file_path = url_escape(path) + "/" + url_escape(name)
+        self.write(self.render_template('texteditor.html',
+            file_path=file_path,
+            )
+        )
 
 default_handlers = [
     (r"/texteditor%s" % file_path_regex, EditorHandler),