Show unavailable printers disabled and grayed out.

1. If a printer is not available it has to disabled and grayed out.

2. Cancle a print job if the app does not provide the requested pages.

3. Fix current printer selection flicker when the print dialog is
   showing up. Often the current printer is initially set to the user's
   favorite and then it is changed back to the PDF one.

bug:10983508

Change-Id: I8d53eb992cf1c92675ec09f61b2ec272b962fa68

packages/PrintSpooler/res/layout/printer_dropdown_item.xml

@@ -37,7 +37,8 @@
     <LinearLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:orientation="vertical">
+        android:orientation="vertical"
+        android:duplicateParentState="true">
 
         <TextView
             android:id="@+id/title"

packages/PrintSpooler/src/com/android/printspooler/PrintJobConfigActivity.java

@@ -555,6 +555,7 @@ public class PrintJobConfigActivity extends Activity {
                 // TODO: We need some UI for announcing an error.
                 mControllerState = CONTROLLER_STATE_FAILED;
                 Log.e(LOG_TAG, "Received invalid pages from the app");
+                mEditor.cancel();
                 PrintJobConfigActivity.this.finish();
             }
         }
@@ -1152,6 +1153,9 @@ public class PrintJobConfigActivity extends Activity {
                     if (!mFavoritePrinterSelected && mDestinationSpinnerAdapter.getCount() > 2) {
                         mFavoritePrinterSelected = true;
                         mDestinationSpinner.setSelection(0);
+                        // Workaround again the weird spinner behavior to notify for selection
+                        // change on the next layout pass as the current printer is used below.
+                        mCurrentPrinter = (PrinterInfo) mDestinationSpinnerAdapter.getItem(0);
                     }
 
                     // If there is a next printer to select and we succeed selecting

packages/PrintSpooler/src/com/android/printspooler/SelectPrinterFragment.java

@@ -435,6 +435,8 @@ public final class SelectPrinterFragment extends ListFragment {
                         R.layout.printer_dropdown_item, parent, false);
             }
 
+            convertView.setEnabled(isEnabled(position));
+
             CharSequence title = null;
             CharSequence subtitle = null;
             Drawable icon = null;
@@ -475,6 +477,12 @@ public final class SelectPrinterFragment extends ListFragment {
             return convertView;
         }
 
+        @Override
+        public boolean isEnabled(int position) {
+            PrinterInfo printer =  (PrinterInfo) getItem(position);
+            return printer.getStatus() != PrinterInfo.STATUS_UNAVAILABLE;
+        }
+
         @Override
         public Loader<List<PrinterInfo>> onCreateLoader(int id, Bundle args) {
             if (id == LOADER_ID_PRINTERS_LOADER) {