1 files changed, 127 insertions, 0 deletions
diff --git a/src/com/android/settings/applications/ProcessStatsBase.java b/src/com/android/settings/applications/ProcessStatsBase.java
new file mode 100644
index 0000000..c2f96d2
--- /dev/null
+++ b/src/com/android/settings/applications/ProcessStatsBase.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2015 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.applications;
+
+import android.os.Bundle;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView.OnItemSelectedListener;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+
+import com.android.internal.app.ProcessStats;
+import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
+
+public abstract class ProcessStatsBase extends SettingsPreferenceFragment
+        implements OnItemSelectedListener {
+    private static final String DURATION = "duration";
+
+    protected static final String ARG_TRANSFER_STATS = "transfer_stats";
+    protected static final String ARG_DURATION_INDEX = "duration_index";
+
+    protected static final int NUM_DURATIONS = 4;
+
+    // The actual duration value to use for each duration option.  Note these
+    // are lower than the actual duration, since our durations are computed in
+    // batches of 3 hours so we want to allow the time we use to be slightly
+    // smaller than the actual time selected instead of bumping up to 3 hours
+    // beyond it.
+    private static final long DURATION_QUANTUM = ProcessStats.COMMIT_PERIOD;
+    protected static long[] sDurations = new long[] {
+        3 * 60 * 60 * 1000 - DURATION_QUANTUM / 2, 6 * 60 *60 * 1000 - DURATION_QUANTUM / 2,
+        12 * 60 * 60 * 1000 - DURATION_QUANTUM / 2, 24 * 60 * 60 * 1000 - DURATION_QUANTUM / 2
+    };
+    protected static int[] sDurationLabels = new int[] {
+            R.string.menu_duration_3h, R.string.menu_duration_6h,
+            R.string.menu_duration_12h, R.string.menu_duration_1d
+    };
+
+    private ViewGroup mSpinnerHeader;
+    private Spinner mFilterSpinner;
+    private ArrayAdapter<String> mFilterAdapter;
+
+    protected ProcStatsData mStatsManager;
+    protected int mDurationIndex;
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+
+        Bundle args = getArguments();
+        mStatsManager = new ProcStatsData(getActivity(), icicle != null
+                || (args != null && args.getBoolean(ARG_TRANSFER_STATS, false)));
+
+        mDurationIndex = icicle != null
+                ? icicle.getInt(ARG_DURATION_INDEX)
+                : args != null ? args.getInt(ARG_DURATION_INDEX) : 0;
+        mStatsManager.setDuration(icicle != null
+                ? icicle.getLong(DURATION, sDurations[0]) : sDurations[0]);
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putLong(DURATION, mStatsManager.getDuration());
+        outState.putInt(ARG_DURATION_INDEX, mDurationIndex);
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        mStatsManager.refreshStats(false);
+        refreshUi();
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (getActivity().isChangingConfigurations()) {
+            mStatsManager.xferStats();
+        }
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        mSpinnerHeader = (ViewGroup) setPinnedHeaderView(R.layout.apps_filter_spinner);
+        mFilterSpinner = (Spinner) mSpinnerHeader.findViewById(R.id.filter_spinner);
+        mFilterAdapter = new ArrayAdapter<String>(getActivity(), R.layout.filter_spinner_item);
+        mFilterAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+        for (int i = 0; i < NUM_DURATIONS; i++) {
+            mFilterAdapter.add(getString(sDurationLabels[i]));
+        }
+        mFilterSpinner.setAdapter(mFilterAdapter);
+        mFilterSpinner.setSelection(mDurationIndex);
+        mFilterSpinner.setOnItemSelectedListener(this);
+    }
+
+    @Override
+    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+        mDurationIndex = position;
+        mStatsManager.setDuration(sDurations[position]);
+        refreshUi();
+    }
+
+    @Override
+    public void onNothingSelected(AdapterView<?> parent) {
+        // Select something.
+        mFilterSpinner.setSelection(0);
+    }
+
+    public abstract void refreshUi();
+}