/*
 * Copyright 2012 Tomas Zeman <tzeman@volny.cz>
 *
 * 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 fis.fs.ui

import fis.base.ui._
import fis.fs.model._
import net.liftweb.common._
import net.liftweb.http._
import net.liftweb.util._
import net.tz.lift.model._

abstract class AttachmentForm extends HorizontalScreen with CancelButton with
  SaveButton with AttachmentCrud {

  protected object attachment extends ScreenVar[Attachment](
    Attachment.createRecord)

  override def hasUploadField = true

  protected val file = makeField[Box[FileParamHolder], Nothing](l10n("File"),
    Empty, field => SHtml.fileUpload(fph => field.set(Full(fph))),
    NothingOtherValueInitializer)

  protected def onSuccess(a: Attachment): Unit

  def finish() { for {
    fph <- file.get
    a1 <- attachment.store(fph)
    a2 <- save(a1)
  } {
    onSuccess(a2)
  }}
}

abstract class DeleteAttachmentForm extends HorizontalScreen with CancelButton
  with DeleteButton with AttachmentCrud {

  protected def getAttachment: Box[Attachment]

  val confirm = field(l10n("Really delete this attachment?"), false)

  protected def onSuccess(objectDeleted: Boolean, contentRemoved: Boolean): Unit

  def finish() {
    for {
      a <- getAttachment if confirm
      r <- delete(a)
      rm <- a.remove
    } {
      onSuccess(r, rm)
    }
  }

}

// vim: set ts=2 sw=2 et: