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owenclave / app/src/main/java/io/nekohasekai/sagernet/widget/LinkPreference.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.core.widget.addTextChangedListener
import androidx.preference.EditTextPreference
import com.google.android.material.textfield.TextInputLayout
import io.nekohasekai.sagernet.R
import io.nekohasekai.sagernet.ktx.readableMessage
import libexclavecore.Libexclavecore
import androidx.core.net.toUri
class LinkPreference : 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()
}
}
init {
dialogLayoutResource = R.layout.layout_link_dialog
setOnBindEditTextListener {
val linkLayout = it.rootView.findViewById(R.id.input_layout)
fun validate() {
val link = it.text
if (link.isEmpty()) {
linkLayout.isErrorEnabled = false
return
}
try {
if (link.toString().contains("\n")) {
error("invalid url")
}
val uri = link.toString().toUri()
if (uri.scheme.isNullOrBlank()) {
error("Missing scheme in url")
} else if (uri.scheme?.lowercase() == "http") {
linkLayout.error = context.getString(R.string.cleartext_http_warning)
linkLayout.isErrorEnabled = true
} else if (uri.scheme?.lowercase() != "https") {
error("Invalid scheme ${uri.scheme}")
} else {
linkLayout.isErrorEnabled = false
}
} catch (e: Exception) {
linkLayout.error = e.readableMessage
linkLayout.isErrorEnabled = true
}
}
validate()
it.addTextChangedListener {
validate()
}
}
setOnPreferenceChangeListener { _, newValue ->
if ((newValue as String).isBlank()) {
text = defaultValue
false
} else try {
Libexclavecore.parseURL(newValue)
true
} catch (ignored: Exception) {
false
}
}
}
}