Add disabled state to chooser targets

The new functinality is not used yet as this is a preparation step.
Allows chooser targets to be disabled: unclickable with grey-scale
icons.

Bug: 349468879
Test: presubmits
Flag: EXEMPT refactoring
Change-Id: I202a496954c08da27b7cc7c0f9df8d04d9916350

4 files changed, 73 insertions, 29 deletions

diff --git a/java/src/com/android/intentresolver/ChooserListAdapter.java b/java/src/com/android/intentresolver/ChooserListAdapter.java
index 07a615a5..548cd6ac 100644
--- a/java/src/com/android/intentresolver/ChooserListAdapter.java
+++ b/java/src/com/android/intentresolver/ChooserListAdapter.java
@@ -18,6 +18,7 @@ package com.android.intentresolver;
 
 import static com.android.intentresolver.ChooserActivity.TARGET_TYPE_SHORTCUTS_FROM_PREDICTION_SERVICE;
 import static com.android.intentresolver.ChooserActivity.TARGET_TYPE_SHORTCUTS_FROM_SHORTCUT_MANAGER;
+import static com.android.intentresolver.util.graphics.SuspendedMatrixColorFilter.getSuspendedColorMatrix;
 
 import android.app.ActivityManager;
 import android.app.prediction.AppTarget;
@@ -153,6 +154,7 @@ public class ChooserListAdapter extends ResolverListAdapter {
             };
 
     private boolean mAnimateItems = true;
+    private boolean mTargetsEnabled = true;
 
     public ChooserListAdapter(
             Context context,
@@ -306,6 +308,16 @@ public class ChooserListAdapter extends ResolverListAdapter {
         }
     }
 
+    /**
+     * Set the enabled state for all targets.
+     */
+    public void setTargetsEnabled(boolean isEnabled) {
+        if (mTargetsEnabled != isEnabled) {
+            mTargetsEnabled = isEnabled;
+            notifyDataSetChanged();
+        }
+    }
+
     public void setAnimateItems(boolean animateItems) {
         mAnimateItems = animateItems;
     }
@@ -353,7 +365,7 @@ public class ChooserListAdapter extends ResolverListAdapter {
     @VisibleForTesting
     @Override
     public void onBindView(View view, TargetInfo info, int position) {
-        view.setEnabled(!isDestroyed());
+        view.setEnabled(!isDestroyed() && mTargetsEnabled);
         final ViewHolder holder = (ViewHolder) view.getTag();
 
         resetViewHolder(holder);
@@ -413,6 +425,9 @@ public class ChooserListAdapter extends ResolverListAdapter {
         }
 
         holder.bindIcon(info);
+        if (info.hasDisplayIcon() && !mTargetsEnabled) {
+            holder.icon.setColorFilter(getSuspendedColorMatrix());
+        }
         if (mAnimateItems && info.hasDisplayIcon()) {
             mAnimationTracker.animateIcon(holder.icon, info);
         }
diff --git a/java/src/com/android/intentresolver/ResolverListAdapter.java b/java/src/com/android/intentresolver/ResolverListAdapter.java
index 5fd37d43..7ca1c724 100644
--- a/java/src/com/android/intentresolver/ResolverListAdapter.java
+++ b/java/src/com/android/intentresolver/ResolverListAdapter.java
@@ -16,14 +16,14 @@
 
 package com.android.intentresolver;
 
+import static com.android.intentresolver.util.graphics.SuspendedMatrixColorFilter.getSuspendedColorMatrix;
+
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.LabeledIntent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
-import android.graphics.ColorMatrix;
-import android.graphics.ColorMatrixColorFilter;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
 import android.os.RemoteException;
@@ -63,9 +63,6 @@ import java.util.concurrent.atomic.AtomicBoolean;
 public class ResolverListAdapter extends BaseAdapter {
     private static final String TAG = "ResolverListAdapter";
 
-    @Nullable  // TODO: other model for lazy computation? Or just precompute?
-    private static ColorMatrixColorFilter sSuspendedMatrixColorFilter;
-
     protected final Context mContext;
     protected final LayoutInflater mInflater;
     protected final ResolverListCommunicator mResolverListCommunicator;
@@ -797,29 +794,6 @@ public class ResolverListAdapter extends BaseAdapter {
         return mDestroyed.get();
     }
 
-    private static ColorMatrixColorFilter getSuspendedColorMatrix() {
-        if (sSuspendedMatrixColorFilter == null) {
-
-            int grayValue = 127;
-            float scale = 0.5f; // half bright
-
-            ColorMatrix tempBrightnessMatrix = new ColorMatrix();
-            float[] mat = tempBrightnessMatrix.getArray();
-            mat[0] = scale;
-            mat[6] = scale;
-            mat[12] = scale;
-            mat[4] = grayValue;
-            mat[9] = grayValue;
-            mat[14] = grayValue;
-
-            ColorMatrix matrix = new ColorMatrix();
-            matrix.setSaturation(0.0f);
-            matrix.preConcat(tempBrightnessMatrix);
-            sSuspendedMatrixColorFilter = new ColorMatrixColorFilter(matrix);
-        }
-        return sSuspendedMatrixColorFilter;
-    }
-
     protected final Drawable loadIconPlaceholder() {
         return mContext.getDrawable(R.drawable.resolver_icon_placeholder);
     }
diff --git a/java/src/com/android/intentresolver/profiles/ChooserMultiProfilePagerAdapter.java b/java/src/com/android/intentresolver/profiles/ChooserMultiProfilePagerAdapter.java
index 8aee0da1..9176cd35 100644
--- a/java/src/com/android/intentresolver/profiles/ChooserMultiProfilePagerAdapter.java
+++ b/java/src/com/android/intentresolver/profiles/ChooserMultiProfilePagerAdapter.java
@@ -112,6 +112,15 @@ public class ChooserMultiProfilePagerAdapter extends MultiProfilePagerAdapter<
         }
     }
 
+    /**
+     * Set enabled status for all targets in all profiles.
+     */
+    public void setTargetsEnabled(boolean isEnabled) {
+        for (int i = 0, size = getItemCount(); i < size; i++) {
+            getPageAdapterForIndex(i).getListAdapter().setTargetsEnabled(isEnabled);
+        }
+    }
+
     private static ViewGroup makeProfileView(Context context) {
         LayoutInflater inflater = LayoutInflater.from(context);
         ViewGroup rootView =
diff --git a/java/src/com/android/intentresolver/util/graphics/SuspendedMatrixColorFilter.kt b/java/src/com/android/intentresolver/util/graphics/SuspendedMatrixColorFilter.kt
new file mode 100644
index 00000000..3e2d8e2a
--- /dev/null
+++ b/java/src/com/android/intentresolver/util/graphics/SuspendedMatrixColorFilter.kt
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+@file:JvmName("SuspendedMatrixColorFilter")
+
+package com.android.intentresolver.util.graphics
+
+import android.graphics.ColorMatrix
+import android.graphics.ColorMatrixColorFilter
+
+val suspendedColorMatrix by lazy {
+    val grayValue = 127f
+    val scale = 0.5f // half bright
+
+    val tempBrightnessMatrix =
+        ColorMatrix().apply {
+            array.let { m ->
+                m[0] = scale
+                m[6] = scale
+                m[12] = scale
+                m[4] = grayValue
+                m[9] = grayValue
+                m[14] = grayValue
+            }
+        }
+
+    val matrix =
+        ColorMatrix().apply {
+            setSaturation(0.0f)
+            preConcat(tempBrightnessMatrix)
+        }
+    ColorMatrixColorFilter(matrix)
+}