/*
* 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 com.android.settings.notification;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.support.v7.preference.DropDownPreference;
import android.support.v7.preference.PreferenceViewHolder;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import com.android.settings.R;
import com.android.settingslib.RestrictedLockUtils;
import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
import com.android.settingslib.RestrictedPreferenceHelper;
import java.util.ArrayList;
import java.util.List;
public class RestrictedDropDownPreference extends DropDownPreference {
private final RestrictedPreferenceHelper mHelper;
private ReselectionSpinner mSpinner;
private List<RestrictedItem> mRestrictedItems = new ArrayList<>();
private boolean mUserClicked = false;
private OnPreferenceClickListener mPreClickListener;
public RestrictedDropDownPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setLayoutResource(R.layout.restricted_preference_dropdown);
setWidgetLayoutResource(R.layout.restricted_icon);
mHelper = new RestrictedPreferenceHelper(context, this, attrs);
}
@Override
protected ArrayAdapter createAdapter() {
return new RestrictedArrayItemAdapter(getContext());
}
@Override
public void setValue(String value) {
if (getRestrictedItemForEntryValue(value) != null) {
return;
}
super.setValue(value);
}
@Override
public void onBindViewHolder(PreferenceViewHolder view) {
mSpinner = (ReselectionSpinner) view.itemView.findViewById(R.id.spinner);
mSpinner.setPreference(this);
super.onBindViewHolder(view);
mHelper.onBindViewHolder(view);
mSpinner.setOnItemSelectedListener(mItemSelectedListener);
final View restrictedIcon = view.findViewById(R.id.restricted_icon);
if (restrictedIcon != null) {
restrictedIcon.setVisibility(isDisabledByAdmin() ? View.VISIBLE : View.GONE);
}
}
private boolean isRestrictedForEntry(CharSequence entry) {
if (entry == null) {
return false;
}
for (RestrictedItem item : mRestrictedItems) {
if (entry.equals(item.entry)) {
return true;
}
}
return false;
}
private RestrictedItem getRestrictedItemForEntryValue(CharSequence entryValue) {
if (entryValue == null) {
return null;
}
for (RestrictedItem item : mRestrictedItems) {
if (entryValue.equals(item.entryValue)) {
return item;
}
}
return null;
}
private RestrictedItem getRestrictedItemForPosition(int position) {
if (position < 0 || position >= getEntryValues().length) {
return null;
}
CharSequence entryValue = getEntryValues()[position];
return getRestrictedItemForEntryValue(entryValue);
}
public void addRestrictedItem(RestrictedItem item) {
mRestrictedItems.add(item);
}
public void clearRestrictedItems() {
mRestrictedItems.clear();
}
@Override
public void performClick() {
if (mPreClickListener != null && mPreClickListener.onPreferenceClick(this)) {
return;
}
if (!mHelper.performClick()) {
mUserClicked = true;
super.performClick();
}
}
@Override
public void setEnabled(boolean enabled) {
if (enabled && isDisabledByAdmin()) {
mHelper.setDisabledByAdmin(null);
return;
}
super.setEnabled(enabled);
}
public void setDisabledByAdmin(EnforcedAdmin admin) {
if (mHelper.setDisabledByAdmin(admin)) {
notifyChanged();
}
}
/**
* Similar to {@link #setOnPreferenceClickListener(OnPreferenceClickListener)}, but can
* preempt {@link #onClick()}.
*/
public void setOnPreClickListener(OnPreferenceClickListener l) {
mPreClickListener = l;
}
public boolean isDisabledByAdmin() {
return mHelper.isDisabledByAdmin();
}
private void setUserClicked(boolean userClicked) {
mUserClicked = userClicked;
}
private boolean isUserClicked() {
return mUserClicked;
}
private final OnItemSelectedListener mItemSelectedListener = new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {
if (mUserClicked) {
mUserClicked = false;
} else {
return;
}
if (position >= 0 && position < getEntryValues().length) {
String value = getEntryValues()[position].toString();
RestrictedItem item = getRestrictedItemForEntryValue(value);
if (item != null) {
RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getContext(),
item.enforcedAdmin);
mSpinner.setSelection(findIndexOfValue(getValue()));
} else if (!value.equals(getValue()) && callChangeListener(value)) {
setValue(value);
}
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// noop
}
};
/**
* Extension of {@link ArrayAdapter} which updates the state of the dropdown item
* depending on whether it is restricted by the admin.
*/
private class RestrictedArrayItemAdapter extends ArrayAdapter<String> {
private static final int TEXT_RES_ID = android.R.id.text1;
public RestrictedArrayItemAdapter(Context context) {
super(context, R.layout.spinner_dropdown_restricted_item, TEXT_RES_ID);
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
View rootView = super.getView(position, convertView, parent);
CharSequence entry = getItem(position);
boolean isEntryRestricted = isRestrictedForEntry(entry);
TextView text = (TextView) rootView.findViewById(TEXT_RES_ID);
if (text != null) {
text.setEnabled(!isEntryRestricted);
}
View restrictedIcon = rootView.findViewById(R.id.restricted_icon);
if (restrictedIcon != null) {
restrictedIcon.setVisibility(isEntryRestricted ? View.VISIBLE : View.GONE);
}
return rootView;
}
}
/**
* Extension of {@link Spinner} which triggers the admin support dialog on user clicking a
* restricted item even if was already selected.
*/
public static class ReselectionSpinner extends Spinner {
private RestrictedDropDownPreference pref;
public ReselectionSpinner(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void setPreference(RestrictedDropDownPreference pref) {
this.pref = pref;
}
@Override
public void setSelection(int position) {
int previousSelectedPosition = getSelectedItemPosition();
super.setSelection(position);
if (position == previousSelectedPosition && pref.isUserClicked()) {
pref.setUserClicked(false);
RestrictedItem item = pref.getRestrictedItemForPosition(position);
if (item != null) {
RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getContext(),
item.enforcedAdmin);
}
}
}
}
public static class RestrictedItem {
public final CharSequence entry;
public final CharSequence entryValue;
public final EnforcedAdmin enforcedAdmin;
public RestrictedItem(CharSequence entry, CharSequence entryValue,
EnforcedAdmin enforcedAdmin) {
this.entry = entry;
this.entryValue = entryValue;
this.enforcedAdmin = enforcedAdmin;
}
}
}