Add fragment for batch file transfer.

app/src/main/java/de/ccc/events/badge/card10/filetransfer/BatchTransferFragment.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.filetransfer
+
+import android.bluetooth.BluetoothGatt
+import android.net.Uri
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import de.ccc.events.badge.card10.R
+import de.ccc.events.badge.card10.common.ConnectionService
+import de.ccc.events.badge.card10.common.GattListener
+import de.ccc.events.badge.card10.main.MainFragment
+import kotlinx.android.synthetic.main.batch_transfer_fragment.*
+import java.lang.Exception
+import java.lang.IllegalStateException
+
+private const val TAG = "BatchTransferFragment"
+
+class BatchTransferFragment : Fragment(), FileTransferListener, GattListener {
+    private lateinit var queue: TransferQueue
+    private var transfer: FileTransfer? = null
+    private var isCancelled = false
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        val args = arguments ?: throw IllegalStateException()
+        val jobs = args.get("jobs") as? Array<TransferJob> ?: throw IllegalStateException()
+        queue = TransferQueue(jobs)
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
+        inflater.inflate(R.layout.batch_transfer_fragment, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        label_status.text = getString(R.string.batch_transfer_label_initializing)
+        progress.max = 5
+
+        button_cancel.setOnClickListener {
+//            isCancelled = true
+            startTransfer()
+        }
+
+        button_done.setOnClickListener {
+            val fragment = MainFragment()
+            fragmentManager!!.beginTransaction()
+                .replace(R.id.fragment_container, fragment)
+                .addToBackStack(null)
+                .commit()
+        }
+
+        initConnection()
+    }
+
+    private fun initConnection() {
+        val ctx = context ?: throw IllegalStateException()
+        ConnectionService.connect(ctx)
+    }
+
+    private fun startTransfer() {
+        activity?.runOnUiThread {
+            label_status.text = getString(R.string.batch_transfer_label_transferring)
+            progress.max = queue.size
+        }
+
+        transferNext()
+    }
+
+    private fun transferNext() {
+        val item = queue.dequeue()
+
+        if (item == null || isCancelled) {
+            activity?.runOnUiThread {
+                progress.progress = 0
+                label_status.text = if (isCancelled) {
+                    getString(R.string.batch_transfer_label_cancelled)
+                } else {
+                    getString(R.string.batch_transfer_label_complete)
+                }
+                button_cancel.visibility = View.GONE
+                button_done.visibility = View.VISIBLE
+            }
+        } else {
+            transferItem(item)
+        }
+    }
+
+    private fun transferItem(transferJob: TransferJob) {
+        try {
+            val ctx = activity ?: throw IllegalStateException()
+            val reader = ChunkedReader(ctx, transferJob.sourceUri, ConnectionService.mtu)
+            val service = ConnectionService.leService ?: throw IllegalStateException()
+            transfer = FileTransfer(service, reader,this, transferJob.destPath)
+        } catch (e: Exception) {
+            Log.e(TAG, "Failed to initialize transfer")
+            return
+        }
+    }
+
+    override fun onConnectionStateChange(state: Int) {
+        if (state == BluetoothGatt.STATE_CONNECTED) {
+            startTransfer()
+        }
+    }
+
+    override fun onError() {
+        activity?.runOnUiThread {
+            label_status.text = getString(R.string.batch_transfer_label_error)
+            button_cancel.visibility = View.GONE
+            button_done.visibility = View.VISIBLE
+        }
+    }
+
+    override fun onFinish() {
+        activity?.runOnUiThread {
+            // TODO: Add workaround for broken progress bars
+            // https://stackoverflow.com/questions/4348032/android-progressbar-does-not-update-progress-view-drawable
+            progress.incrementProgressBy(1)
+        }
+
+        transferNext()
+    }
+}
\ No newline at end of file

app/src/main/java/de/ccc/events/badge/card10/filetransfer/TransferJob.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.filetransfer
+
+import android.net.Uri
+import android.os.Parcel
+import android.os.Parcelable
+import kotlinx.android.parcel.Parcelize
+
+// Ignore IDE warnings. @Parcelize will take care of everything
+@Parcelize
+data class TransferJob(
+    val sourceUri: Uri,
+    val destPath: String
+) : Parcelable
\ No newline at end of file

app/src/main/java/de/ccc/events/badge/card10/filetransfer/TransferQueue.kt

+/*
+ * Copyright by the original author or authors.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package de.ccc.events.badge.card10.filetransfer
+
+import android.net.Uri
+import java.util.*
+import kotlin.NoSuchElementException
+
+class TransferQueue() {
+    private val queue = LinkedList<TransferJob>()
+
+    val size: Int
+        get() = queue.size
+
+    constructor(jobs: Array<TransferJob>) : this() {
+        for (job in jobs) {
+            queue.add(job)
+        }
+    }
+
+    fun enqueue(sourceUri: Uri, destPath: String) {
+        queue.add(TransferJob(sourceUri, destPath))
+    }
+
+    fun dequeue(): TransferJob? {
+        return try {
+            queue.removeFirst()
+        } catch (e: NoSuchElementException) {
+            null
+        }
+    }
+
+    fun clear() = queue.clear()
+}
\ No newline at end of file

app/src/main/res/layout/batch_transfer_fragment.xml

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:padding="@dimen/activity_padding">
+
+    <LinearLayout android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  app:layout_constraintTop_toTopOf="parent"
+                  app:layout_constraintBottom_toBottomOf="parent"
+                  app:layout_constraintLeft_toLeftOf="parent"
+                  app:layout_constraintRight_toRightOf="parent"
+                  android:orientation="vertical"
+                  android:gravity="center_horizontal">
+
+        <ProgressBar android:layout_width="@dimen/batch_transfer_progress"
+                     android:layout_height="wrap_content"
+                     android:id="@+id/progress"
+                     android:indeterminate="false"
+                     style="@style/Widget.AppCompat.ProgressBar.Horizontal"/>
+
+        <TextView android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  android:id="@+id/label_status"/>
+    </LinearLayout>
+
+    <Button android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            android:id="@+id/button_cancel"
+            android:text="@string/batch_transfer_button_cancel"/>
+
+    <Button android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            android:id="@+id/button_done"
+            android:visibility="gone"
+            android:text="@string/batch_transfer_button_done"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

app/src/main/res/values/dimensions.xml

@@ -7,6 +7,8 @@
     <dimen name="main_button_margin">16dp</dimen>
 
     <dimen name="send_label_margin">24dp</dimen>
+    <dimen name="batch_transfer_progress">200dp</dimen>
+
 
     <dimen name="app_list_item_padding">16dp</dimen>
     <dimen name="app_detail_description_margin">16dp</dimen>

app/src/main/res/values/strings.xml

@@ -19,6 +19,15 @@
     <string name="file_transfer_hint_destination">Destination path</string>
     <string name="file_transfer_label_destination_help">(e.g. /test.py)</string>
 
+    <string name="batch_transfer_label_initializing">Initializing…</string>
+    <string name="batch_transfer_label_transferring">Transferring files…</string>
+    <string name="batch_transfer_label_complete">Files transferred</string>
+    <string name="batch_transfer_label_error">Transfer failed</string>
+    <string name="batch_transfer_label_cancelled">Transfer cancelled</string>
+    <string name="batch_transfer_button_cancel">Cancel</string>
+    <string name="batch_transfer_button_done">Done</string>
+
+
     <string name="loading_dialog_loading">Loading</string>
     <string name="dialog_action_ok">OK</string>
     <string name="dialog_action_cancel">Cancel</string>