Open mic when launching via long press.

When enter via the long press on the app list button, we should open
the mic by starting a voice interaction automatically.

Bug: b:113298342
Change-Id: I8755d3f86b6f5b3c7a5d5f328b4477c1f5851d21
Reviewed-on: https://chromium-review.googlesource.com/1194255
Commit-Queue: David Black <dmblack@google.com>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587008}

ash/assistant/assistant_interaction_controller.cc

@@ -119,10 +119,11 @@ void AssistantInteractionController::OnUiVisibilityChanged(
       assistant_interaction_model_.SetInputModality(InputModality::kKeyboard);
       break;
     case AssistantVisibility::kVisible:
-      // TODO(dmblack): When the UI becomes visible, we may need to immediately
-      // start a voice interaction depending on |source| and user preference.
-      if (source == AssistantSource::kStylus)
+      if (source == AssistantSource::kLongPressLauncher) {
+        StartVoiceInteraction();
+      } else if (source == AssistantSource::kStylus) {
         assistant_interaction_model_.SetInputModality(InputModality::kStylus);
+      }
       break;
   }
 }

ash/assistant/ui/main_stage/assistant_main_stage.cc

@@ -7,6 +7,7 @@
 #include "ash/assistant/assistant_controller.h"
 #include "ash/assistant/assistant_interaction_controller.h"
 #include "ash/assistant/assistant_ui_controller.h"
+#include "ash/assistant/model/assistant_query.h"
 #include "ash/assistant/ui/assistant_ui_constants.h"
 #include "ash/assistant/ui/main_stage/assistant_footer_view.h"
 #include "ash/assistant/ui/main_stage/assistant_header_view.h"
@@ -544,14 +545,25 @@ void AssistantMainStage::OnUiVisibilityChanged(
                  kGreetingAnimationFadeInDelay),
              CreateOpacityElement(1.f, kGreetingAnimationFadeInDuration))});
 
-    // Animate the footer from 0% to 100% opacity with delay.
+    // Set up our pre-animation values.
     footer_->layer()->SetOpacity(0.f);
-    footer_->layer()->GetAnimator()->StartAnimation(
-        CreateLayerAnimationSequence(
-            ui::LayerAnimationElement::CreatePauseElement(
-                ui::LayerAnimationElement::AnimatableProperty::OPACITY,
-                kFooterEntryAnimationFadeInDelay),
-            CreateOpacityElement(1.f, kFooterEntryAnimationFadeInDuration)));
+
+    const AssistantQuery& pending_query =
+        assistant_controller_->interaction_controller()
+            ->model()
+            ->pending_query();
+
+    // We only animate in the footer when a pending query is absent. Otherwise
+    // the footer should be hidden to make room for the pending query view.
+    if (pending_query.type() == AssistantQueryType::kNull) {
+      // Animate the footer to 100% opacity with delay.
+      footer_->layer()->GetAnimator()->StartAnimation(
+          CreateLayerAnimationSequence(
+              ui::LayerAnimationElement::CreatePauseElement(
+                  ui::LayerAnimationElement::AnimatableProperty::OPACITY,
+                  kFooterEntryAnimationFadeInDelay),
+              CreateOpacityElement(1.f, kFooterEntryAnimationFadeInDuration)));
+    }
 
     return;
   }