Modified the PrintJobSettingsFragment

Test: manual
Test: make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.print
Change-Id: Ide889b273be21421753cec99ce391adb756ab05c

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

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+package com.android.settings.print;
+
+import android.content.Context;
+import android.print.PrintJob;
+import android.print.PrintJobId;
+import android.print.PrintManager;
+import android.util.Log;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnStart;
+import com.android.settingslib.core.lifecycle.events.OnStop;
+
+public abstract class PrintJobPreferenceControllerBase extends BasePreferenceController implements
+        LifecycleObserver, OnStart, OnStop, PrintManager.PrintJobStateChangeListener {
+    private static final String TAG = "PrintJobPrefCtrlBase";
+
+    private static final String EXTRA_PRINT_JOB_ID = "EXTRA_PRINT_JOB_ID";
+
+    private final PrintManager mPrintManager;
+    protected Preference mPreference;
+    protected PrintJobSettingsFragment mFragment;
+    protected PrintJobId mPrintJobId;
+
+    public PrintJobPreferenceControllerBase(Context context, String key) {
+        super(context, key);
+        mPrintManager = ((PrintManager) mContext.getSystemService(
+                Context.PRINT_SERVICE)).getGlobalPrintManagerForUser(mContext.getUserId());
+    }
+
+    @Override
+    public void onStart() {
+        mPrintManager.addPrintJobStateChangeListener(this);
+        updateUi();
+    }
+
+    @Override
+    public void onStop() {
+        mPrintManager.removePrintJobStateChangeListener(this);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public void onPrintJobStateChanged(PrintJobId printJobId) {
+        updateUi();
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(getPreferenceKey());
+    }
+
+    public void init(PrintJobSettingsFragment fragment) {
+        mFragment = fragment;
+        processArguments();
+    }
+
+    protected PrintJob getPrintJob() {
+        return mPrintManager.getPrintJob(mPrintJobId);
+    }
+
+    protected abstract void updateUi();
+
+    private void processArguments() {
+        String printJobId = mFragment.getArguments().getString(EXTRA_PRINT_JOB_ID);
+        if (printJobId == null) {
+            printJobId = mFragment.getActivity().getIntent().getStringExtra(EXTRA_PRINT_JOB_ID);
+
+            if (printJobId == null) {
+                Log.w(TAG, EXTRA_PRINT_JOB_ID + " not set");
+                mFragment.finish();
+                return;
+            }
+        }
+        mPrintJobId = PrintJobId.unflattenFromString(printJobId);
+    }
+}