/*
* Copyright (C) 2014 The Android Open Source Project
* Copyright (C) 2016 MrWasdennnoch@XDA
*
* 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 tk.wasdennnoch.androidn_ify.ui.preference;
import android.content.Context;
import android.content.res.TypedArray;
import android.preference.Preference;
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 java.util.ArrayList;
import tk.wasdennnoch.androidn_ify.R;
@SuppressWarnings({"SameParameterValue", "WeakerAccess"})
public class DropDownPreference extends Preference {
private final Context mContext;
private String mSummary;
private final ArrayAdapter<String> mAdapter;
private final Spinner mSpinner;
private final ArrayList<String> mValues = new ArrayList<>();
private String mValue;
private int mSelectedPosition = -1;
@SuppressWarnings("unused")
public DropDownPreference(Context context) {
this(context, null);
}
public DropDownPreference(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mAdapter = new ArrayAdapter<>(mContext, android.R.layout.simple_spinner_dropdown_item);
mSpinner = new Spinner(mContext);
mSpinner.setVisibility(View.INVISIBLE);
mSpinner.setAdapter(mAdapter);
mSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View v, int position, long id) {
setSelectedItem(position, true);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// noop
}
});
setOnPreferenceClickListener(new OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
mSpinner.performClick();
return true;
}
});
// Support XML specification like ListPreferences do.
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.DropDownPreference);
mSummary = a.getString(R.styleable.DropDownPreference_android_summary);
CharSequence[] entries = a.getTextArray(R.styleable.DropDownPreference_android_entries);
CharSequence[] values = a.getTextArray(R.styleable.DropDownPreference_android_entryValues);
if (entries != null && values != null) {
for (int i = 0; i < entries.length; i++) {
addItem(entries[i].toString(), values[i].toString());
}
}
a.recycle();
}
public void setSelectedItem(int position) {
setSelectedItem(position, false);
}
public void setSelectedItem(int position, boolean fromSpinner) {
if (fromSpinner && position == mSelectedPosition) {
return;
}
String value = mValues.get(position);
if (!callChangeListener(value)) {
return;
}
mValue = value;
mSpinner.setSelection(position);
mSelectedPosition = mSpinner.getSelectedItemPosition();
if (isPersistent()) {
persistString(value);
}
notifyChanged();
boolean disableDependents = value == null;
notifyDependencyChange(disableDependents);
}
public void setSelectedValue(String value) {
int i = mValues.indexOf(value);
if (i > -1) {
setSelectedItem(i);
}
}
public String getValue() {
return mValue;
}
public void addItem(String caption, String value) {
mAdapter.add(caption);
mValues.add(value);
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
if (view.equals(mSpinner.getParent())) return;
if (mSpinner.getParent() != null) {
((ViewGroup) mSpinner.getParent()).removeView(mSpinner);
}
ViewGroup vg = (ViewGroup) view;
vg.addView(mSpinner, 0);
ViewGroup.LayoutParams lp = mSpinner.getLayoutParams();
lp.width = 0;
mSpinner.setLayoutParams(lp);
}
@Override
protected Object onGetDefaultValue(TypedArray a, int index) {
return a.getString(index);
}
@Override
protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
setSelectedValue(restoreValue ? getPersistedString(mValue) : (String) defaultValue);
}
@Override
public void setSummary(CharSequence summary) {
super.setSummary(summary);
if (summary == null && mSummary != null || summary != null && !summary.equals(mSummary)) {
mSummary = summary == null ? null : summary.toString();
}
}
@Override
public CharSequence getSummary() {
if (mSummary == null) {
return super.getSummary();
} else {
final CharSequence entry = mAdapter.getItem(mValues.indexOf(mValue));
return String.format(mSummary, entry == null ? "" : entry);
}
}
}