Automatically group tasks by their titles' first character in Trigger…

…s' Task-dropdown to provide an option to run all Tasks starting with the specific character. (First character can be any unicode character.)

This allows simply grouping Tasks in order to be executed with only one Trigger.

app/src/main/java/ca/pkay/rcloneexplorer/Activities/TriggerActivity.kt

@@ -30,11 +30,13 @@ class TriggerActivity : AppCompatActivity() {
     companion object {
         const val ID_EXTRA = "TRIGGER_EDIT_ID"
         const val ID_ALL_TASKS = -1000L
+        const val UNICODE_CHAR_RANGE = -10_000_000L
     }
 
     private lateinit var mTrigger: Trigger
     private lateinit var dbHandler: DatabaseHandler
     private var mTaskList: List<Task> = ArrayList()
+    private var firstCharOfTasksUnique: List<Char> = ArrayList<Char>()
 
     private lateinit var mCardInterval: CardView
     private lateinit var mCardWeekday: CardView
@@ -88,6 +90,14 @@ class TriggerActivity : AppCompatActivity() {
         dbHandler = DatabaseHandler(this)
         mTaskList = dbHandler.allTasks
 
+        if (this.mTaskList.isNotEmpty()) {
+            val firstCharsOfTaskTitles : HashSet<Char> = HashSet<Char>()
+            for (i in this.mTaskList.indices) {
+                firstCharsOfTaskTitles.add(this.mTaskList[i].title.trim().uppercase().first())
+            }
+            firstCharOfTasksUnique = firstCharsOfTaskTitles.toList().sortedBy { it.toString() }
+        }
+
         val extras = intent.extras
         val triggerId: Long
         if (extras != null) {
@@ -198,6 +208,9 @@ class TriggerActivity : AppCompatActivity() {
             override fun onItemSelected(parent: AdapterView<*>?, view: View, pos: Int, id: Long) {
                 if (pos == (mTaskList.size)) {
                     mTrigger.triggerTarget = ID_ALL_TASKS
+                } else if (pos > (mTaskList.size)) {
+                    val charForGrouping = firstCharOfTasksUnique[pos - mTaskList.size - 1]
+                    mTrigger.triggerTarget = UNICODE_CHAR_RANGE - charForGrouping.code.toLong()
                 } else {
                     mTrigger.triggerTarget = mTaskList[pos].id
                 }
@@ -218,11 +231,14 @@ class TriggerActivity : AppCompatActivity() {
      * Set up Task-Target Dropdown
      */
     private fun setUpTargetsDropdown() {
-        val items = arrayOfNulls<String>(if (this.mTaskList.size == 0) 0 else (this.mTaskList.size + 1))
+        val items = arrayOfNulls<String>(if (this.mTaskList.size == 0) 0 else (this.mTaskList.size + firstCharOfTasksUnique.size + 1))
         for (i in this.mTaskList.indices) {
             items[i] = this.mTaskList[i].title
         }
         if (this.mTaskList.size > 0) items[this.mTaskList.size] = this.resources.getString(R.string.sync_option_all_tasks_asc)
+        for (i in firstCharOfTasksUnique.indices) {
+            items[i + this.mTaskList.size + 1] = this.resources.getString(R.string.sync_option_all) + " " + firstCharOfTasksUnique[i] + this.resources.getString(R.string.sync_option_all_tasks_prefixed_asc)
+        }
         val adapter = ArrayAdapter(this, android.R.layout.simple_spinner_dropdown_item, items)
         mTargetDropdown.adapter = adapter
     }
@@ -268,6 +284,11 @@ class TriggerActivity : AppCompatActivity() {
                 mTargetDropdown.setSelection(mTaskList.size)
             } else if (task.id == mTrigger.triggerTarget) {
                 mTargetDropdown.setSelection(mTaskList.indexOf(task))
+            } else if (UNICODE_CHAR_RANGE - mTrigger.triggerTarget >= 0) {
+                val firstChar = (UNICODE_CHAR_RANGE - mTrigger.triggerTarget).toInt().toChar()
+                if (firstCharOfTasksUnique.contains(firstChar)) {
+                    mTargetDropdown.setSelection(mTaskList.size + firstCharOfTasksUnique.indexOf(firstChar) + 1)
+                }
             }
         }
     }

app/src/main/java/ca/pkay/rcloneexplorer/RecyclerViewAdapters/TriggerRecyclerViewAdapter.java

@@ -2,6 +2,7 @@
 
 
 import static ca.pkay.rcloneexplorer.Activities.TriggerActivity.ID_ALL_TASKS;
+import static ca.pkay.rcloneexplorer.Activities.TriggerActivity.UNICODE_CHAR_RANGE;
 import static ca.pkay.rcloneexplorer.Items.Trigger.TRIGGER_DAY_FRI;
 import static ca.pkay.rcloneexplorer.Items.Trigger.TRIGGER_DAY_MON;
 import static ca.pkay.rcloneexplorer.Items.Trigger.TRIGGER_DAY_SAT;
@@ -86,6 +87,9 @@ public void onBindViewHolder(@NonNull final RecyclerView.ViewHolder holder, fina
         String targetTaskTitle = "ERR: NOTFOUND";
         if (selectedTrigger.getTriggerTarget() == ID_ALL_TASKS) {
             targetTaskTitle = context.getResources().getString(R.string.sync_title_all_tasks_asc);
+        } else if (UNICODE_CHAR_RANGE - selectedTrigger.getTriggerTarget() >= 0) {
+            String firstCharOfTaskName = new String(Character.toChars((int) (UNICODE_CHAR_RANGE - selectedTrigger.getTriggerTarget())));
+            targetTaskTitle = firstCharOfTaskName + context.getResources().getString(R.string.sync_title_all_tasks_prefixed_asc);
         } else {
             Task task = (new DatabaseHandler(context)).getTask(selectedTrigger.getTriggerTarget());
             if (task != null) { targetTaskTitle = task.getTitle(); }

app/src/main/java/ca/pkay/rcloneexplorer/workmanager/SyncManager.kt

@@ -8,6 +8,7 @@ import androidx.work.OneTimeWorkRequest
 import androidx.work.OneTimeWorkRequestBuilder
 import androidx.work.WorkManager
 import androidx.work.WorkRequest
+import ca.pkay.rcloneexplorer.Activities.TriggerActivity
 import ca.pkay.rcloneexplorer.Activities.TriggerActivity.Companion.ID_ALL_TASKS
 import ca.pkay.rcloneexplorer.Database.DatabaseHandler
 import ca.pkay.rcloneexplorer.Items.Task
@@ -20,8 +21,10 @@ class SyncManager(private var mContext: Context) {
 
     fun queue(trigger: Trigger) {
         if (trigger.triggerTarget == ID_ALL_TASKS) {
-            queueAllTasks()
-        } else {
+            queueAllTasks(null)
+        } else if (TriggerActivity.UNICODE_CHAR_RANGE - trigger.triggerTarget >= 0) {
+            queueAllTasks((TriggerActivity.UNICODE_CHAR_RANGE - trigger.triggerTarget).toInt().toChar().toString())
+        } else{
             queue(trigger.triggerTarget)
         }
     }
@@ -34,11 +37,17 @@ class SyncManager(private var mContext: Context) {
         work(getOneTimeWorkRequest(taskID))
     }
 
-    private fun queueAllTasks() {
+    private fun queueAllTasks(prefixFilter: String?) {
         val mTaskList = mDatabase.allTasks
         mTaskList.sortedBy { it.title }
         for (i in mTaskList.indices) {
-            workOneByOne(getOneTimeWorkRequest(mTaskList[i].id))
+            if (prefixFilter == null) {
+                workOneByOne(getOneTimeWorkRequest(mTaskList[i].id))
+            } else {
+                if (mTaskList[i].title.trim().uppercase().startsWith(prefixFilter)) {
+                    workOneByOne(getOneTimeWorkRequest(mTaskList[i].id))
+                }
+            }
         }
     }
 

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

@@ -486,6 +486,9 @@
     <string name="description_sync_direction_sync_bidirectional">Make sure local and remote storage have the same files by transferring, downloading, and deleting files as needed to maintain an identical folder structure.</string>
     <string name="sync_option_all_tasks_asc">All tasks (in alphabetical order)</string>
     <string name="sync_title_all_tasks_asc">All tasks</string>
+    <string name="sync_option_all">All</string>
+    <string name="sync_option_all_tasks_prefixed_asc">… named tasks</string>
+    <string name="sync_title_all_tasks_prefixed_asc">… tasks</string>
     <string name="intro_success">Success!</string>
     <string name="intro_successful_setup">You are now ready to start!</string>
     <string name="intro_write_external_storage_denied">File access permission not granted</string>