53 lines
1.8 KiB
Kotlin
53 lines
1.8 KiB
Kotlin
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.util.glide
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import android.graphics.drawable.Drawable
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import com.bumptech.glide.request.target.CustomTarget
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import com.bumptech.glide.request.transition.Transition
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import nl.komponents.kovenant.Deferred
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import nl.komponents.kovenant.Promise
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import nl.komponents.kovenant.deferred
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/**
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* Created by mariotaku on 2017/3/21.
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*/
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class DeferredTarget<R>(private val deferredInstance: Deferred<R, Exception> = deferred()) : CustomTarget<R>() {
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val promise: Promise<R, Exception> get() = deferredInstance.promise
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override fun onLoadFailed(errorDrawable: Drawable?) {
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if (deferredInstance.promise.isDone()) return
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deferredInstance.reject(Exception())
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}
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override fun onResourceReady(resource: R, transition: Transition<in R>?) {
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if (deferredInstance.promise.isDone()) return
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deferredInstance.resolve(resource)
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}
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override fun onLoadCleared(placeholder: Drawable?) {
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if (deferredInstance.promise.isDone()) return
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deferredInstance.reject(Exception())
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}
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}
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