Fix launch flow when one app in an app pair is paused

This CL changes the error handling logic in ItemClickHandler to continue with app pair launch when only one app in an app pair is paused. It also changes AppPairIconGraphic so that the disabled state of the app pair is drawn modularly (if only one app is paused, only one app will appear visually paused).

Bug: 330795643
Flag: ACONFIG com.android.wm.shell.enable_app_pairs TRUNKFOOD
Test: Manual
Change-Id: Ieaf0120cced07b6ac0f3eb07c75b66666a8dcc85
(cherry picked from commit 17db14b107)
Merged-In: Ieaf0120cced07b6ac0f3eb07c75b66666a8dcc85

res/values/strings.xml

@@ -50,6 +50,8 @@
     <string name="app_pair_unlaunchable_at_screen_size">This app pair isn\'t supported on this device</string>
     <!-- Displayed when an app pair can't launch at this screen size, but user can unfold device to restore functionality [CHAR_LIMIT=none] -->
     <string name="app_pair_needs_unfold">Unfold device to use this app pair</string>
+    <!-- Displayed when user selects a shortcut for an app pair that is currently not available [CHAR_LIMIT=none]-->
+    <string name="app_pair_not_available">App pair isn\'t available</string>
 
     <!-- Widgets -->
     <!-- Message to tell the user to press and hold on a widget to add it [CHAR_LIMIT=50] -->

src/com/android/launcher3/apppairs/AppPairIconGraphic.kt

@@ -26,7 +26,6 @@ import androidx.annotation.OpenForTesting
 import com.android.launcher3.DeviceProfile
 import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener
 import com.android.launcher3.icons.BitmapInfo
-import com.android.launcher3.icons.FastBitmapDrawable.getDisabledColorFilter
 import com.android.launcher3.model.data.AppPairInfo
 import com.android.launcher3.util.Themes
 import com.android.launcher3.views.ActivityContext
@@ -62,21 +61,10 @@ constructor(context: Context, attrs: AttributeSet? = null) :
             appIcon1.setBounds(0, 0, p.memberIconSize.toInt(), p.memberIconSize.toInt())
             appIcon2.setBounds(0, 0, p.memberIconSize.toInt(), p.memberIconSize.toInt())
 
-            val shouldDrawAsDisabled =
-                appPairInfo.isDisabled || !appPairInfo.isLaunchable(p.context)
-
-            // Set disabled status on icons.
-            appIcon1.setIsDisabled(shouldDrawAsDisabled)
-            appIcon2.setIsDisabled(shouldDrawAsDisabled)
-
             // Create icon drawable.
             val fullIconDrawable = AppPairIconDrawable(p, appIcon1, appIcon2)
             fullIconDrawable.setBounds(0, 0, p.iconSize, p.iconSize)
 
-            // Set disabled color filter on background paint.
-            fullIconDrawable.colorFilter =
-                if (shouldDrawAsDisabled) getDisabledColorFilter() else null
-
             return fullIconDrawable
         }
     }

src/com/android/launcher3/touch/ItemClickHandler.java

@@ -158,20 +158,27 @@ public class ItemClickHandler {
                             ? R.string.app_pair_needs_unfold
                             : R.string.app_pair_unlaunchable_at_screen_size,
                     Toast.LENGTH_SHORT).show();
+            return;
         } else if (appPairIcon.getInfo().isDisabled()) {
             WorkspaceItemInfo app1 = appPairIcon.getInfo().getFirstApp();
             WorkspaceItemInfo app2 = appPairIcon.getInfo().getSecondApp();
             // Show the user why the app pair is disabled.
-            if (app1.isDisabled() && !handleDisabledItemClicked(app1, launcher)) {
-                // If handleDisabledItemClicked() did not handle the error message, we initiate an
-                // app launch so Framework can tell the user why the app is suspended.
-                onClickAppShortcut(v, app1, launcher);
-            } else if (app2.isDisabled() && !handleDisabledItemClicked(app2, launcher)) {
-                onClickAppShortcut(v, app2, launcher);
+            if (app1.isDisabled() && app2.isDisabled()) {
+                // Both apps are disabled, show "app pair is not available" toast.
+                Toast.makeText(launcher, R.string.app_pair_not_available, Toast.LENGTH_SHORT)
+                        .show();
+                return;
+            } else if ((app1.isDisabled() && handleDisabledItemClicked(app1, launcher))
+                    || (app2.isDisabled() && handleDisabledItemClicked(app2, launcher))) {
+                // Only one is disabled, and handleDisabledItemClicked() will show a toast, so we
+                // are done.
+                return;
             }
-        } else {
-            launcher.launchAppPair(appPairIcon);
         }
+
+        // Either the app pair is not disabled, or it is a disabled state that can be handled by
+        // framework directly (e.g. one app is paused), so go ahead and launch.
+        launcher.launchAppPair(appPairIcon);
     }
 
     /**