Add topic filter

app/src/actions/Tree.ts

@@ -1,10 +1,11 @@
-import { ActionTypes, CustomAction, AppState } from '../reducers'
+import { AppState } from '../reducers'
+import { ActionTypes } from '../reducers/Tree'
 import * as q from '../../../backend/src/Model'
 import { Dispatch } from 'redux'
 import { setTopic } from './Publish'
 
 export const selectTopic = (topic: q.TreeNode) => (dispatch: Dispatch<any>, getState: () => AppState)  => {
-  const { selectedTopic } = getState().tooBigReducer
+  const { selectedTopic } = getState().tree
 
   // Update publish topic
   if (selectedTopic && (selectedTopic.path() === getState().publish.topic || !getState().publish.topic)) {
@@ -13,6 +14,13 @@ export const selectTopic = (topic: q.TreeNode) => (dispatch: Dispatch<any>, getS
 
   dispatch({
     selectedTopic: topic,
-    type: ActionTypes.selectTopic,
+    type: ActionTypes.TREE_SELECT_TOPIC,
   })
 }
+
+export const showTree = (tree?: q.Tree) => {
+  return {
+    tree,
+    type: ActionTypes.TREE_SHOW_TREE,
+  }
+}