Merge "Hide taskbar icons when recents button is disabled" into sc-v2-dev

quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java

@@ -260,6 +260,13 @@ public class NavbarButtonsViewController {
         return (mState & FLAG_IME_VISIBLE) != 0;
     }
 
+    /**
+     * Returns true if the recents (overview) button is disabled
+     */
+    public boolean isRecentsDisabled() {
+        return (mState & FLAG_DISABLE_RECENTS) != 0;
+    }
+
     /**
      * Adds the bounds corresponding to all visible buttons to provided region
      */

quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java

@@ -236,6 +236,8 @@ public class TaskbarActivityContext extends ContextThemeWrapper implements Activ
                 systemUiStateFlags, forceUpdate);
         mControllers.taskbarViewController.setImeIsVisible(
                 mControllers.navbarButtonsViewController.isImeVisible());
+        mControllers.taskbarViewController.setRecentsButtonDisabled(
+                mControllers.navbarButtonsViewController.isRecentsDisabled());
         mControllers.taskbarKeyguardController.updateStateForSysuiFlags(systemUiStateFlags);
     }
 

quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java

@@ -44,6 +44,8 @@ public class TaskbarViewController {
     public static final int ALPHA_INDEX_IME = 1;
     public static final int ALPHA_INDEX_KEYGUARD = 2;
     public static final int ALPHA_INDEX_STASH = 3;
+    public static final int ALPHA_INDEX_RECENTS_DISABLED = 4;
+    private static final int NUM_ALPHA_CHANNELS = 5;
 
     private final TaskbarActivityContext mActivity;
     private final TaskbarView mTaskbarView;
@@ -67,7 +69,7 @@ public class TaskbarViewController {
     public TaskbarViewController(TaskbarActivityContext activity, TaskbarView taskbarView) {
         mActivity = activity;
         mTaskbarView = taskbarView;
-        mTaskbarIconAlpha = new MultiValueAlpha(mTaskbarView, 4);
+        mTaskbarIconAlpha = new MultiValueAlpha(mTaskbarView, NUM_ALPHA_CHANNELS);
         mTaskbarIconAlpha.setUpdateVisibility(true);
         mModelCallbacks = new TaskbarModelCallbacks(activity, mTaskbarView);
     }
@@ -100,6 +102,14 @@ public class TaskbarViewController {
         mTaskbarView.setTouchesEnabled(!isImeVisible);
     }
 
+    /**
+     * Should be called when the recents button is disabled, so we can hide taskbar icons as well.
+     */
+    public void setRecentsButtonDisabled(boolean isDisabled) {
+        // TODO: check TaskbarStashController#supportsStashing(), to stash instead of setting alpha.
+        mTaskbarIconAlpha.getProperty(ALPHA_INDEX_RECENTS_DISABLED).setValue(isDisabled ? 0 : 1);
+    }
+
     /**
      * Sets OnClickListener and OnLongClickListener for the given view.
      */