Add icons to the printer list items in settings.

bug:10955751

Change-Id: Iea87a9a07624d6e26274030a51f912f8d2ef0e10

res/layout/printer_dropdown_item.xml

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2013 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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="48dip"
+    android:gravity="center_vertical"
+    android:paddingStart="@*android:dimen/preference_item_padding_side"
+    android:paddingEnd="?android:attr/scrollbarSize"
+    android:background="?android:attr/selectableItemBackground">
+
+    <ImageView
+        android:id="@+id/icon"
+        android:layout_width="32dip"
+        android:layout_height="32dip"
+        android:layout_gravity="center_vertical"
+        android:layout_marginEnd="8dip"
+        android:duplicateParentState="true"
+        android:contentDescription="@null"
+        android:visibility="gone">
+    </ImageView>
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="?android:attr/textAppearanceMedium"
+            android:singleLine="true"
+            android:ellipsize="marquee"
+            android:fadingEdge="horizontal"
+            android:textIsSelectable="false">
+        </TextView>
+
+        <TextView
+            android:id="@+id/subtitle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="?android:attr/textAppearanceSmall"
+            android:singleLine="true"
+            android:ellipsize="end"
+            android:textIsSelectable="false"
+            android:visibility="gone"
+            android:textColor="?android:attr/textColorSecondary">
+        </TextView>
+
+    </LinearLayout>
+
+</LinearLayout>

src/com/android/settings/print/PrintServiceSettingsFragment.java

@@ -32,6 +32,9 @@ import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
 import android.database.ContentObserver;
 import android.database.DataSetObserver;
+import android.graphics.Color;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
@@ -54,6 +57,7 @@ import android.widget.BaseAdapter;
 import android.widget.CompoundButton;
 import android.widget.Filter;
 import android.widget.Filterable;
+import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.SearchView;
 import android.widget.TextView;
@@ -293,7 +297,7 @@ public class PrintServiceSettingsFragment extends SettingsPreferenceFragment
             }
         });
 
-        getListView().setEnabled(false);
+        getListView().setSelector(new ColorDrawable(Color.TRANSPARENT));
         getListView().setAdapter(mPrintersAdapter);
     }
 
@@ -531,24 +535,26 @@ public class PrintServiceSettingsFragment extends SettingsPreferenceFragment
         public View getView(int position, View convertView, ViewGroup parent) {
             if (convertView == null) {
                 convertView = getActivity().getLayoutInflater().inflate(
-                        R.layout.preference, parent, false);
+                        R.layout.printer_dropdown_item, parent, false);
             }
 
             PrinterInfo printer = (PrinterInfo) getItem(position);
             CharSequence title = printer.getName();
             CharSequence subtitle = null;
+            Drawable icon = null;
             try {
                 PackageInfo packageInfo = getPackageManager().getPackageInfo(
                         printer.getId().getServiceName().getPackageName(), 0);
                         subtitle = packageInfo.applicationInfo.loadLabel(getPackageManager());
+                        icon = packageInfo.applicationInfo.loadIcon(getPackageManager());
             } catch (NameNotFoundException nnfe) {
                 /* ignore */
             }
 
-            TextView titleView = (TextView) convertView.findViewById(android.R.id.title);
+            TextView titleView = (TextView) convertView.findViewById(R.id.title);
             titleView.setText(title);
 
-            TextView subtitleView = (TextView) convertView.findViewById(android.R.id.summary);
+            TextView subtitleView = (TextView) convertView.findViewById(R.id.subtitle);
             if (!TextUtils.isEmpty(subtitle)) {
                 subtitleView.setText(subtitle);
                 subtitleView.setVisibility(View.VISIBLE);
@@ -557,6 +563,14 @@ public class PrintServiceSettingsFragment extends SettingsPreferenceFragment
                 subtitleView.setVisibility(View.GONE);
             }
 
+            ImageView iconView = (ImageView) convertView.findViewById(R.id.icon);
+            if (icon != null) {
+                iconView.setImageDrawable(icon);
+                iconView.setVisibility(View.VISIBLE);
+            } else {
+                iconView.setVisibility(View.GONE);
+            }
+
             return convertView;
         }