Twidere-App-Android-Twitter.../twidere/src/main/kotlin/org/mariotaku/twidere/preference/ComponentPickerPreference.kt

75 lines
2.4 KiB
Kotlin

/*
* Twidere - Twitter client for Android
*
* Copyright (C) 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* 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 <http://www.gnu.org/licenses/>.
*/
package org.mariotaku.twidere.preference
import android.content.ComponentName
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.content.pm.ResolveInfo
import android.util.AttributeSet
abstract class ComponentPickerPreference(context: Context, attrs: AttributeSet? = null) : ThemedListPreference(context, attrs) {
protected val packageManager: PackageManager = context.packageManager
init {
setup()
}
override fun getSummary(): CharSequence {
if (isNoneValue(value)) return noneEntry
return entry
}
protected abstract val intentAction: String
protected abstract val noneEntry: String
protected abstract fun getComponentName(info: ResolveInfo): ComponentName
protected abstract fun resolve(queryIntent: Intent): List<ResolveInfo>
private fun setup() {
val queryIntent = Intent(intentAction)
val infoList = resolve(queryIntent)
val infoListSize = infoList.size
val entries = arrayOfNulls<CharSequence>(infoListSize + 1)
val values = arrayOfNulls<CharSequence>(infoListSize + 1)
entries[0] = noneEntry
values[0] = ""
for (i in 0..infoListSize - 1) {
val info = infoList[i]
entries[i + 1] = info.loadLabel(packageManager)
values[i + 1] = getComponentName(info).flattenToString()
}
setEntries(entries)
entryValues = values
}
companion object {
fun isNoneValue(value: String?): Boolean {
return value.isNullOrEmpty() || "none" == value
}
}
}