1 files changed, 134 insertions, 0 deletions
diff --git a/android/WALT/app/src/main/java/org/chromium/latency/walt/NumberPickerPreference.java b/android/WALT/app/src/main/java/org/chromium/latency/walt/NumberPickerPreference.java
new file mode 100644
index 0000000..9d71d42
--- /dev/null
+++ b/android/WALT/app/src/main/java/org/chromium/latency/walt/NumberPickerPreference.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2016 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 org.chromium.latency.walt;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.v7.preference.DialogPreference;
+import android.support.v7.preference.PreferenceDialogFragmentCompat;
+import android.util.AttributeSet;
+import android.view.View;
+
+public class NumberPickerPreference extends DialogPreference {
+    private int currentValue;
+    private int maxValue;
+    private int minValue;
+
+    private static final int DEFAULT_value = 0;
+    private static final int DEFAULT_maxValue = 0;
+    private static final int DEFAULT_minValue = 0;
+
+    private final String defaultSummary;
+
+    public NumberPickerPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        defaultSummary = getSummary().toString();
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.NumberPickerPreference);
+
+        try {
+            maxValue = a.getInt(R.styleable.NumberPickerPreference_maxValue, DEFAULT_maxValue);
+            minValue = a.getInt(R.styleable.NumberPickerPreference_minValue, DEFAULT_minValue);
+        } finally {
+            a.recycle();
+        }
+
+        setDialogLayoutResource(R.layout.numberpicker_dialog);
+        setPositiveButtonText(android.R.string.ok);
+        setNegativeButtonText(android.R.string.cancel);
+
+        setDialogIcon(null);
+
+    }
+
+    public int getValue() {
+        return currentValue;
+    }
+
+    public void setValue(int value) {
+        currentValue = value;
+        persistInt(currentValue);
+        setSummary(String.format(defaultSummary, getValue()));
+    }
+
+    @Override
+    protected Object onGetDefaultValue(TypedArray a, int index) {
+        return a.getInt(index, DEFAULT_value);
+    }
+
+    @Override
+    protected void onSetInitialValue(boolean restorePersistedValue, Object defaultValue) {
+        setValue(restorePersistedValue ? getPersistedInt(currentValue) : (Integer) defaultValue);
+    }
+
+    public static class NumberPickerPreferenceDialogFragmentCompat
+            extends PreferenceDialogFragmentCompat {
+        private static final String SAVE_STATE_VALUE = "NumberPickerPreferenceDialogFragment.value";
+        private CustomNumberPicker picker;
+        private int currentValue = 1;
+
+        public NumberPickerPreferenceDialogFragmentCompat() {
+        }
+
+        public static NumberPickerPreferenceDialogFragmentCompat newInstance(String key) {
+            NumberPickerPreferenceDialogFragmentCompat fragment =
+                    new NumberPickerPreferenceDialogFragmentCompat();
+            Bundle b = new Bundle(1);
+            b.putString(ARG_KEY, key);
+            fragment.setArguments(b);
+            return fragment;
+        }
+
+        public void onCreate(Bundle savedInstanceState) {
+            super.onCreate(savedInstanceState);
+            if (savedInstanceState == null) {
+                currentValue = getNumberPickerPreference().getValue();
+            } else {
+                currentValue = savedInstanceState.getInt(SAVE_STATE_VALUE);
+            }
+        }
+
+        public void onSaveInstanceState(@NonNull Bundle outState) {
+            outState.putInt(SAVE_STATE_VALUE, currentValue);
+        }
+
+        private NumberPickerPreference getNumberPickerPreference() {
+            return (NumberPickerPreference) this.getPreference();
+        }
+
+        @Override
+        protected void onBindDialogView(View view) {
+            super.onBindDialogView(view);
+            picker = (CustomNumberPicker) view.findViewById(R.id.numpicker_pref);
+            picker.setMaxValue(getNumberPickerPreference().maxValue);
+            picker.setMinValue(getNumberPickerPreference().minValue);
+            picker.setValue(currentValue);
+        }
+
+        @Override
+        public void onDialogClosed(boolean b) {
+            if (b) {
+                int value = picker.getValue();
+                if(getPreference().callChangeListener(value)) {
+                    getNumberPickerPreference().setValue(value);
+                }
+            }
+        }
+    }
+}