1 files changed, 68 insertions, 1 deletions
diff --git a/lib/scripts/edit.js b/lib/scripts/edit.js
index 267f51194..51a8e3f8e 100644
--- a/lib/scripts/edit.js
+++ b/lib/scripts/edit.js
@@ -186,8 +186,75 @@ function addBtnActionAutohead(btn, props, edid, id)
     return true;
 }
 
+/**
+ * Make intended formattings easier to handle
+ *
+ * Listens to all key inputs and handle indentions
+ * of lists and code blocks
+ *
+ * Currently handles space, backspce and enter presses
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ * @fixme handle tabs
+ * @fixme IE compatibility not tested yet
+ */
+function keyHandler(e){
+    if(e.keyCode != 13 &&
+       e.keyCode != 8  &&
+       e.keyCode != 32) return; //FIXME IE
+    var field     = e.target;
+    var selection = getSelection(field);
+    var search    = "\n"+field.value.substr(0,selection.start);
+    var linestart = search.lastIndexOf("\n");
+    search = search.substr(linestart);
+
+    if(e.keyCode == 13){ // Enter //FIXME IE
+        // keep current indention for lists and code
+        var match = search.match(/(\n  +([*-] ?)?)/);
+        if(match){
+            insertAtCarret(field.id,match[1]);
+            e.preventDefault(); // prevent enter key
+        }
+    }else if(e.keyCode == 8){ // Backspace
+        // unindent lists
+        var match = search.match(/(\n  +)([*-] ?)$/);
+        if(match){
+            var spaces = match[1].length-1;
+
+            if(spaces > 3){ // unindent one level
+                field.value = field.value.substr(0,linestart)+
+                              field.value.substr(linestart+2);
+                selection.start = selection.start - 2;
+                selection.end   = selection.start;
+            }else{ // delete list point
+                field.value = field.value.substr(0,linestart)+
+                              field.value.substr(selection.start);
+                selection.start = linestart;
+                selection.end   = linestart;
+            }
+            setSelection(selection);
+            e.preventDefault(); // prevent backspace
+        }
+    }else if(e.keyCode == 32){ // Space
+        // intend list item
+        var match = search.match(/(\n  +)([*-] )$/);
+        if(match){
+            field.value = field.value.substr(0,linestart)+'  '+
+                          field.value.substr(linestart);
+            selection.start = selection.start + 2;
+            selection.end   = selection.start;
+            setSelection(selection);
+            e.preventDefault(); // prevent space
+        }
+    }
+}
 
-
+//FIXME consolidate somewhere else
+addInitEvent(function(){
+    var field = $('wiki__text');
+    if(!field) return;
+    addEvent(field,'keydown',keyHandler);
+});
 
 /**
  * Determine the current section level while editing