Fix response suggestions:

Fix scrolling messages when response view is shown.
Empty suggestions can't be fully opened.
Fix UI delays after animation.
Code improvements.

src/status_im/chat/handlers.cljs

@@ -48,11 +48,11 @@
         (update-in [:chats current-chat-id :input-text] safe-trim))))
 
 (register-handler :start-cancel-command
+  (u/side-effect!
     (fn [db _]
       (if (commands/get-chat-command-to-msg-id db)
         (dispatch [:animate-cancel-command])
-      (dispatch [:cancel-command #(dispatch [:cancel-command])]))
+        (dispatch [:cancel-command])))))
-    db))
 
 (register-handler :set-chat-command-content
   (fn [{:keys [current-chat-id] :as db} [_ content]]
@@ -79,8 +79,8 @@
       (commands/stage-command db command-info))))
 
 (register-handler :set-response-chat-command
+  (after #(dispatch [:animate-show-response]))
   (fn [db [_ to-msg-id command-key]]
-    (dispatch [:animate-show-response])
     (commands/set-response-chat-command db to-msg-id command-key)))
 
 (defn update-text

src/status_im/chat/handlers/animation.cljs

@@ -1,5 +1,6 @@
 (ns status-im.chat.handlers.animation
   (:require [re-frame.core :refer [register-handler after dispatch]]
+            [re-frame.middleware :refer [path]]
             [status-im.models.commands :as commands]
             [status-im.handlers.content-suggestions :refer [get-content-suggestions]]
             [status-im.chat.styles.plain-input :refer [input-height]]
@@ -14,16 +15,16 @@
     (assoc-in db [:animations :commands-input-is-switching?] false)))
 
 (register-handler :animate-cancel-command
+    (path :animations)
     (fn [db _]
-      (let [hiding? (get-in db [:animations :commands-input-is-switching?])]
+      (if-not (:commands-input-is-switching? db)
-        (if-not hiding?
+        (assoc db
-          (-> db
+          :commands-input-is-switching? true
-              (assoc-in [:animations :commands-input-is-switching?] true)
+          :message-input-buttons-scale 1
-              (assoc-in [:animations :message-input-buttons-scale] 1)
+          :message-input-offset 0
-              (assoc-in [:animations :message-input-offset] 0)
+          :to-response-height zero-height
-              (assoc-in [:animations :to-response-height] zero-height)
+          :messages-offset 0)
-              (assoc-in [:animations :messages-offset] 0))
+        db)))
-          db))))
 
 (register-handler :finish-animate-response-resize
   (fn [db _]
@@ -71,22 +72,39 @@
 
 (register-handler :set-response-max-height
   (fn [db [_ height]]
-    (assoc-in db [:animations :response-height-max] height)))
+    (let [prev-height (get-in db [:animations :response-height-max])]
+      (if (not= height prev-height)
+        (let [db (assoc-in db [:animations :response-height-max] height)]
+          (if (= prev-height (get-in db [:animations :to-response-height]))
+            (-> db
+                (assoc-in [:animations :to-response-height] height)
+                (assoc-in [:animations :response-height-current] height))
+            db))
+        db))))
 
 (register-handler :on-drag-response
   (fn [db [_ dy]]
     (let [fixed (get-in db [:animations :to-response-height])]
-      (assoc-in db [:animations :response-height-current] (- fixed dy)))))
+      (-> db
+          (assoc-in [:animations :response-height-current] (- fixed dy))
+          (assoc-in [:animations :response-resize?] false)))))
 
 (register-handler :fix-response-height
   (fn [db _]
+    (if (and (commands/get-chat-command-to-msg-id db)
+             (not (get-in db [:animations :commands-input-is-switching?])))
       (let [current (get-in db [:animations :response-height-current])
             normal-height response-height-normal
+            command (commands/get-chat-command db)
+            text (commands/get-chat-command-content db)
+            suggestions (get-content-suggestions command text)
             max-height (get-in db [:animations :response-height-max])
             delta (/ normal-height 2)
             new-fixed (cond
-                      (<= current (+ zero-height delta)) (+ zero-height request-info-height)
+                        (or (<= current (+ zero-height delta))
+                            (empty? suggestions)) (+ zero-height request-info-height)
                         (<= current (+ zero-height normal-height delta)) (get-response-height db)
                         :else max-height)]
         (dispatch [:animate-response-resize])
-      (assoc-in db [:animations :to-response-height] new-fixed))))
+        (assoc-in db [:animations :to-response-height] new-fixed))
+      db)))

src/status_im/chat/screen.cljs

@@ -260,7 +260,10 @@
    show-actions-atom [:show-actions]
    command [:get-chat-command]
    to-msg-id [:get-chat-command-to-msg-id]]
-  [view st/chat-view
+  [view {:style st/chat-view
+         :onLayout (fn [event]
+                     (let [height (.. event -nativeEvent -layout -height)]
+                       (dispatch [:set-response-max-height height])))}
    [chat-toolbar]
    [messages-container
     [messages-view group-chat]]

src/status_im/chat/styles/response.cljs

@@ -51,21 +51,15 @@
    :opacity    0.69
    :color      color-white})
 
-(def container
+(defn response-view [height]
   {:flexDirection   :column
-   :justifyContent  :flex-end
    :position        :absolute
    :left            0
    :right           0
-   :top             0
    :bottom          0
-   :backgroundColor :transparent
-   :elevation       2})
-
-(defn response-view [height]
-  {:flexDirection   :column
    :height          height
-   :backgroundColor color-white})
+   :backgroundColor color-white
+   :elevation       2})
 
 (def input-placeholder
   {:height input-height})

src/status_im/chat/views/new_message.cljs

@@ -18,6 +18,7 @@
 
 (defn show-input [command]
   [plain-message-input-view
+   (when command
      (case (:command command)
        :phone {:input-options {:keyboardType :phone-pad}
                :validator     valid-mobile-number?}
@@ -25,7 +26,7 @@
        :confirmation-code {:input-options {:keyboardType :numeric}}
        :money {:input-options {:keyboardType :numeric}}
        :request {:input-options {:keyboardType :numeric}}
-     nil)])
+       (throw (js/Error. "Uknown command type"))))])
 
 (defn chat-message-new []
   (let [command-atom (subscribe [:get-chat-command])

src/status_im/chat/views/response.cljs

@@ -33,18 +33,28 @@
     ;; TODO stub data: request message info
     "By ???, MMM 1st at HH:mm"]])
 
-(defview request-info []
+(defn create-response-pan-responder []
-  [command [:get-chat-command]]
+  (drag/create-pan-responder
-  [view (st/request-info (:color command))
+    {:on-move    (fn [e gesture]
+                   (dispatch [:on-drag-response (.-dy gesture)]))
+     :on-release (fn [e gesture]
+                   (dispatch [:fix-response-height]))}))
+
+(defn request-info []
+  (let [pan-responder (create-response-pan-responder)
+        command (subscribe [:get-chat-command])]
+    (fn []
+      [view (merge (drag/pan-handlers pan-responder)
+                   {:style (st/request-info (:color @command))})
        [drag-icon]
        [view st/inner-container
         [command-icon nil]
-    [info-container command]
+        [info-container @command]
         [touchable-highlight {:on-press #(dispatch [:start-cancel-command])}
          [view st/cancel-container
-      [icon :close-white st/cancel-icon]]]]])
+          [icon :close-white st/cancel-icon]]]]])))
 
-(defn inner-container-animation-logic [{:keys [animation? to-value current-value val]}]
+(defn container-animation-logic [{:keys [animation? to-value current-value val]}]
   (fn [_]
     (if @animation?
       (let [to-value @to-value]
@@ -58,16 +68,8 @@
                           (dispatch [:cancel-command]))))))
       (anim/set-value val @current-value))))
 
-(defn create-response-pan-responder []
+(defn container [& children]
-  (drag/create-pan-responder
+  (let [commands-input-is-switching? (subscribe [:get-in [:animations :commands-input-is-switching?]])
-    {:on-move    (fn [e gesture]
-                   (dispatch [:on-drag-response (.-dy gesture)]))
-     :on-release (fn [e gesture]
-                   (dispatch [:fix-response-height]))}))
-
-(defn inner-container [content]
-  (let [pan-responder (create-response-pan-responder)
-        commands-input-is-switching? (subscribe [:get-in [:animations :commands-input-is-switching?]])
         response-resize? (subscribe [:get-in [:animations :response-resize?]])
         to-response-height (subscribe [:get-in [:animations :to-response-height]])
         cur-response-height (subscribe [:get-in [:animations :response-height-current]])
@@ -76,28 +78,22 @@
                  :to-value      to-response-height
                  :current-value cur-response-height
                  :val           response-height}
-        on-update (inner-container-animation-logic context)]
+        on-update (container-animation-logic context)]
     (r/create-class
       {:component-did-mount
        on-update
        :component-did-update
        on-update
        :reagent-render
-       (fn [content]
+       (fn [& children]
          @to-response-height
-         [animated-view (merge (drag/pan-handlers pan-responder)
+         (into [animated-view {:style (st/response-view (if (or @commands-input-is-switching? @response-resize?)
-                               {:style (st/response-view (if (or @commands-input-is-switching? @response-resize?)
                                                           response-height
-                                                           (or @cur-response-height 0)))})
+                                                          (or @cur-response-height 0)))}]
-          content])})))
+               children))})))
 
 (defn response-view []
-  [view {:style    st/container
+  [container
-         :onLayout (fn [event]
-                     (let [height (.. event -nativeEvent -layout -height)]
-                       (dispatch [:set-response-max-height height])))}
-   [inner-container
-    [view
    [request-info]
    [response-suggestions-view]
-     [view st/input-placeholder]]]])
+   [view st/input-placeholder]])

src/status_im/new_group/screen.cljs

@@ -33,7 +33,7 @@
 (defview group-name-input []
   [group-name [:get :new-chat-name]
    validation-messages [:new-chat-name-validation-messages]]
-  [view nil
+  [view
    [text-input
     {:underlineColorAndroid color-purple
      :style                 st/group-name-input