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owenclave / app/src/main/java/io/nekohasekai/sagernet/widget/NonBlackEditTextPreference.kt
/******************************************************************************
* *
* Copyright (C) 2021 by nekohasekai *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see . *
* *
******************************************************************************/
package io.nekohasekai.sagernet.widget
import android.content.Context
import android.util.AttributeSet
import androidx.preference.EditTextPreference
class NonBlackEditTextPreference : EditTextPreference {
var defaultValue: String? = null
constructor(context: Context) : this(context, null)
constructor(
context: Context,
attrs: AttributeSet?,
) : this(context, attrs, androidx.preference.R.attr.editTextPreferenceStyle)
constructor(
context: Context,
attrs: AttributeSet?,
defStyleAttr: Int,
) : this(context, attrs, defStyleAttr, 0)
constructor(
context: Context,
attrs: AttributeSet?,
defStyleAttr: Int,
defStyleRes: Int,
) : super(context, attrs, defStyleAttr, defStyleRes) {
val a = context.obtainStyledAttributes(
attrs, androidx.preference.R.styleable.Preference, defStyleAttr, defStyleRes
)
if (a.hasValue(androidx.preference.R.styleable.Preference_defaultValue)) {
defaultValue = onGetDefaultValue(
a, androidx.preference.R.styleable.Preference_defaultValue
)?.toString()
} else if (a.hasValue(androidx.preference.R.styleable.Preference_android_defaultValue)) {
defaultValue = onGetDefaultValue(
a, androidx.preference.R.styleable.Preference_android_defaultValue
)?.toString()
}
}
override fun setOnPreferenceChangeListener(onPreferenceChangeListener: OnPreferenceChangeListener?) {
super.setOnPreferenceChangeListener { preference, newValue ->
newValue as String
if (newValue.isBlank()) {
text = defaultValue
false
} else {
onPreferenceChangeListener?.onPreferenceChange(preference,newValue) ?: true
}
}
}
init {
onPreferenceChangeListener = null
}
}