Merge pull request #54 from bulkan/feature/list-search

Run a `search` function in vi mode for List's

README.md

@@ -547,6 +547,7 @@ A scrollable list which can display selectable items.
 - **keys** - use predefined keys for navigating the list.
 - **vi** - use vi keys with the `keys` option.
 - **items** - an array of strings which become the list's items.
+- **search** - a function that is called when `vi` mode is enabled and the key `/` is pressed. This function accepts a callback function which should be called with the search string. The search string is then used to jump to an item that is found in `items`.
 
 ##### Properties:
 

lib/widget.js

@@ -4157,6 +4157,17 @@ function List(options) {
         self.screen.render();
         return;
       }
+
+      if (options.vi && key.ch === '/') {
+        if (typeof self.options.search !== 'function') {
+          return;
+        }
+
+        self.options.search(function(searchString){
+          self.select(self.fuzzyFind(searchString));
+          self.screen.render();
+        })
+      }
     });
   }
 
@@ -4251,6 +4262,17 @@ List.prototype.appendItem = function(item) {
   }
 };
 
+List.prototype.fuzzyFind = function(searchString) {
+  var index = this.getItemIndex(this.selected);
+
+  for (var i = 0; i < this.ritems.length; i++){
+    if (this.ritems[i].match(new RegExp('^' + searchString))){
+      return i;
+    }
+  }
+  return index;
+}
+
 List.prototype.getItemIndex = function(child) {
   if (typeof child === 'number') {
     return child;