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/*
* Copyright (C) 2017 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.intelligence.search.indexing;
import android.content.Context;
import android.content.res.TypedArray;
import androidx.annotation.Nullable;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.util.TypedValue;
import androidx.preference.R;
/**
* Utility class to parse elements of XML preferences
*/
public class XmlParserUtils {
private static final String TAG = "XmlParserUtils";
private static final String NS_APP_RES_AUTO = "http://schemas.android.com/apk/res-auto";
private static final String ENTRIES_SEPARATOR = "|";
public static String getDataKey(Context context, AttributeSet attrs) {
return getData(context, attrs,
R.styleable.Preference,
R.styleable.Preference_android_key);
}
public static String getDataTitle(Context context, AttributeSet attrs) {
return getData(context, attrs,
R.styleable.Preference,
R.styleable.Preference_android_title);
}
public static String getDataSummary(Context context, AttributeSet attrs) {
return getData(context, attrs,
R.styleable.Preference,
R.styleable.Preference_android_summary);
}
public static String getDataSummaryOn(Context context, AttributeSet attrs) {
return getData(context, attrs,
R.styleable.CheckBoxPreference,
R.styleable.CheckBoxPreference_android_summaryOn);
}
public static String getDataSummaryOff(Context context, AttributeSet attrs) {
return getData(context, attrs,
R.styleable.CheckBoxPreference,
R.styleable.CheckBoxPreference_android_summaryOff);
}
public static String getDataEntries(Context context, AttributeSet attrs) {
return getDataEntries(context, attrs,
R.styleable.ListPreference,
R.styleable.ListPreference_android_entries);
}
public static String getDataKeywords(Context context, AttributeSet attrs) {
final String keywordRes = attrs.getAttributeValue(NS_APP_RES_AUTO, "keywords");
if (TextUtils.isEmpty(keywordRes)) {
return null;
}
return getString(context, keywordRes);
}
public static int getDataIcon(Context context, AttributeSet attrs) {
final TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.Preference);
final int dataIcon = ta.getResourceId(R.styleable.Preference_android_icon, 0);
ta.recycle();
return dataIcon;
}
/**
* Returns the fragment name if this preference launches a child fragment.
*/
public static String getDataChildFragment(Context context, AttributeSet attrs) {
return getData(context, attrs, R.styleable.Preference,
R.styleable.Preference_android_fragment);
}
/**
* Returns if the attrs contains highlightableMenuKey="" element.
*/
public static String getHighlightableMenuKey(Context context, AttributeSet attrs) {
String menuKey = attrs.getAttributeValue(NS_APP_RES_AUTO, "highlightableMenuKey");
if (!TextUtils.isEmpty(menuKey)) {
menuKey = getString(context, menuKey);
}
return menuKey;
}
@Nullable
private static String getData(Context context, AttributeSet set, int[] attrs, int resId) {
final TypedArray ta = context.obtainStyledAttributes(set, attrs);
String data;
if (DevicePolicyResourcesUtils.isDevicePolicyResource(context, ta, resId)) {
data = DevicePolicyResourcesUtils.getDevicePolicyResource(context, ta, resId);
} else {
data = ta.getString(resId);
}
ta.recycle();
return data;
}
private static String getDataEntries(Context context, AttributeSet set, int[] attrs,
int resId) {
final TypedArray sa = context.obtainStyledAttributes(set, attrs);
final TypedValue tv = sa.peekValue(resId);
sa.recycle();
String[] data = null;
if (tv != null && tv.type == TypedValue.TYPE_REFERENCE) {
if (tv.resourceId != 0) {
data = context.getResources().getStringArray(tv.resourceId);
}
}
final int count = (data == null) ? 0 : data.length;
if (count == 0) {
return null;
}
final StringBuilder result = new StringBuilder();
for (int n = 0; n < count; n++) {
result.append(data[n]);
result.append(ENTRIES_SEPARATOR);
}
return result.toString();
}
private static String getString(Context context, String res) {
// The format of the resource is either a string, or @ followed by int (@123456).
// When it's int, we need to look up the actual string from context.
if (!res.startsWith("@")) {
// It's a string.
return res;
} else {
// It's a resource
try {
final int resValue = Integer.parseInt(res.substring(1));
if (DevicePolicyResourcesUtils.isDevicePolicyResource(context, resValue)) {
return DevicePolicyResourcesUtils.getDevicePolicyResource(context, resValue);
} else {
return context.getString(resValue);
}
} catch (NumberFormatException e) {
Log.w(TAG, "Failed to parse keyword attribute, skipping " + res);
return null;
}
}
}
}
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