Fix usage of singular/plural in alert messages

Closes #405
Closes #131

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/about/AboutScreen.kt

@@ -53,7 +53,7 @@ class AboutScreen(
         developerCountdown--
         if (developerCountdown == 0) {
             prefs.isDeveloper = true
-            activity.showMessage(R.string.you_are_now_a_developer)
+            activity.showMessage(activity.resources.getString(R.string.you_are_now_a_developer))
         }
     }
 }

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/common/dialogs/ConfirmDeleteDialog.java

@@ -38,12 +38,13 @@ import org.isoron.uhabits.inject.*;
 public class ConfirmDeleteDialog extends AlertDialog
 {
     protected ConfirmDeleteDialog(@Provided @ActivityContext Context context,
-                                  @NonNull OnConfirmedCallback callback)
+                                  @NonNull OnConfirmedCallback callback,
+                                  int quantity)
     {
         super(context);
-        setTitle(R.string.delete_habits);
         Resources res = context.getResources();
-        setMessage(res.getString(R.string.delete_habits_message));
+        setTitle(res.getQuantityString(R.plurals.delete_habits_title, quantity));
+        setMessage(res.getQuantityString(R.plurals.delete_habits_message, quantity));
         setButton(BUTTON_POSITIVE,
                 res.getString(R.string.yes),
                 (dialog, which) -> callback.onConfirmed()

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/ListHabitsScreen.kt

@@ -91,9 +91,8 @@ class ListHabitsScreen
     }
 
     override fun onCommandFinished(command: Command) {
-        val stringId = getExecuteString(command)
-        if (stringId != null)
-            activity.showMessage(stringId)
+        val msg = getExecuteString(command)
+        if (msg != null) activity.showMessage(msg)
     }
 
     fun onResult(requestCode: Int, resultCode: Int, data: Intent?) {
@@ -113,7 +112,7 @@ class ListHabitsScreen
             inStream.copyTo(tempFile)
             onImportData(tempFile) { tempFile.delete() }
         } catch (e: IOException) {
-            activity.showMessage(R.string.could_not_import)
+            activity.showMessage(activity.resources.getString(R.string.could_not_import))
             e.printStackTrace()
         }
     }
@@ -143,8 +142,8 @@ class ListHabitsScreen
         dialog.show(activity.supportFragmentManager, "habitType")
     }
 
-    override fun showDeleteConfirmationScreen(callback: OnConfirmedCallback) {
-        confirmDeleteDialogFactory.create(callback).show()
+    override fun showDeleteConfirmationScreen(callback: OnConfirmedCallback, quantity: Int) {
+        confirmDeleteDialogFactory.create(callback, quantity).show()
     }
 
     override fun showEditHabitsScreen(habits: List<Habit>) {
@@ -173,7 +172,7 @@ class ListHabitsScreen
     }
 
     override fun showMessage(m: ListHabitsBehavior.Message) {
-        activity.showMessage(when (m) {
+        activity.showMessage(activity.resources.getString(when (m) {
             COULD_NOT_EXPORT -> R.string.could_not_export
             IMPORT_SUCCESSFUL -> R.string.habits_imported
             IMPORT_FAILED -> R.string.could_not_import
@@ -182,7 +181,7 @@ class ListHabitsScreen
             FILE_NOT_RECOGNIZED -> R.string.file_not_recognized
             SYNC_ENABLED -> R.string.sync_enabled
             SYNC_KEY_ALREADY_INSTALLED -> R.string.sync_key_already_installed
-        })
+        }))
     }
 
     override fun showSendBugReportToDeveloperScreen(log: String) {
@@ -217,15 +216,30 @@ class ListHabitsScreen
         confirmSyncKeyDialogFactory.create(callback).show()
     }
 
-    @StringRes
-    private fun getExecuteString(command: Command): Int? {
+    private fun getExecuteString(command: Command): String? {
         when (command) {
-            is ArchiveHabitsCommand -> return R.string.toast_habit_archived
-            is ChangeHabitColorCommand -> return R.string.toast_habit_changed
-            is CreateHabitCommand -> return R.string.toast_habit_created
-            is DeleteHabitsCommand -> return R.string.toast_habit_deleted
-            is EditHabitCommand -> return R.string.toast_habit_changed
-            is UnarchiveHabitsCommand -> return R.string.toast_habit_unarchived
+            is ArchiveHabitsCommand -> {
+                return activity.resources.getQuantityString(R.plurals.toast_habits_archived,
+                                                            command.selected.size)
+            }
+            is ChangeHabitColorCommand -> {
+                return activity.resources.getQuantityString(R.plurals.toast_habits_changed,
+                                                            command.selected.size)
+            }
+            is CreateHabitCommand -> {
+                return activity.resources.getString(R.string.toast_habit_created)
+            }
+            is DeleteHabitsCommand -> {
+                return activity.resources.getQuantityString(R.plurals.toast_habits_deleted,
+                                                            command.selected.size)
+            }
+            is EditHabitCommand -> {
+                return activity.resources.getQuantityString(R.plurals.toast_habits_changed, 1)
+            }
+            is UnarchiveHabitsCommand -> {
+                return activity.resources.getQuantityString(R.plurals.toast_habits_unarchived,
+                                                            command.selected.size)
+            }
             else -> return null
         }
     }
@@ -234,11 +248,11 @@ class ListHabitsScreen
         taskRunner.execute(importTaskFactory.create(file) { result ->
             if (result == ImportDataTask.SUCCESS) {
                 adapter.refresh()
-                activity.showMessage(R.string.habits_imported)
+                activity.showMessage(activity.resources.getString(R.string.habits_imported))
             } else if (result == ImportDataTask.NOT_RECOGNIZED) {
-                activity.showMessage(R.string.file_not_recognized)
+                activity.showMessage(activity.resources.getString(R.string.file_not_recognized))
             } else {
-                activity.showMessage(R.string.could_not_import)
+                activity.showMessage(activity.resources.getString(R.string.could_not_import))
             }
             onFinished()
         })
@@ -247,7 +261,7 @@ class ListHabitsScreen
     private fun onExportDB() {
         taskRunner.execute(exportDBFactory.create { filename ->
             if (filename != null) activity.showSendFileScreen(filename)
-            else activity.showMessage(R.string.could_not_export)
+            else activity.showMessage(activity.resources.getString(R.string.could_not_export))
         })
     }
 }

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/CheckmarkButtonView.kt

@@ -77,7 +77,7 @@ class CheckmarkButtonView(
 
     override fun onClick(v: View) {
         if (preferences.isShortToggleEnabled) performToggle()
-        else showMessage(R.string.long_press_to_toggle)
+        else showMessage(resources.getString(R.string.long_press_to_toggle))
     }
 
     override fun onLongClick(v: View): Boolean {

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/list/views/NumberButtonView.kt

@@ -90,7 +90,7 @@ class NumberButtonView(
 
     override fun onClick(v: View) {
         if (preferences.isShortToggleEnabled) onEdit()
-        else showMessage(R.string.long_press_to_edit)
+        else showMessage(resources.getString(R.string.long_press_to_edit))
     }
 
     override fun onLongClick(v: View): Boolean {

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/habits/show/ShowHabitScreen.kt

@@ -19,6 +19,7 @@
 
 package org.isoron.uhabits.activities.habits.show
 
+import org.isoron.uhabits.*
 import org.isoron.uhabits.activities.common.dialogs.*
 import org.isoron.uhabits.core.models.*
 import org.isoron.uhabits.core.ui.callbacks.*
@@ -64,7 +65,7 @@ class ShowHabitScreen(
     override fun showMessage(m: ShowHabitMenuBehavior.Message?) {
         when (m) {
             ShowHabitMenuBehavior.Message.COULD_NOT_EXPORT -> {
-                activity.showMessage(org.isoron.uhabits.R.string.could_not_export)
+                activity.showMessage(activity.resources.getString(R.string.could_not_export))
             }
         }
     }
@@ -74,7 +75,7 @@ class ShowHabitScreen(
     }
 
     override fun showDeleteConfirmationScreen(callback: OnConfirmedCallback) {
-        confirmDeleteDialogFactory.create(callback).show()
+        confirmDeleteDialogFactory.create(callback, 1).show()
     }
 
     override fun close() {

android/uhabits-android/src/main/java/org/isoron/uhabits/activities/sync/SyncActivity.kt

@@ -76,7 +76,7 @@ class SyncActivity : AppCompatActivity(), SyncBehavior.Screen {
     private fun copyToClipboard() {
         val clipboard = getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
         clipboard.setPrimaryClip(ClipData.newPlainText("Loop Sync Link", binding.syncLink.text))
-        showMessage(R.string.copied_to_the_clipboard)
+        showMessage(resources.getString(R.string.copied_to_the_clipboard))
     }
 
     suspend fun generateQR(msg: String): Bitmap = Dispatchers.IO {

android/uhabits-android/src/main/java/org/isoron/uhabits/utils/ViewExtensions.kt

@@ -78,9 +78,9 @@ fun ViewGroup.buildToolbar(): Toolbar {
     return inflater.inflate(R.layout.toolbar, null) as Toolbar
 }
 
-fun View.showMessage(@StringRes stringId: Int) {
+fun View.showMessage(msg: String) {
     try {
-        val snackbar = Snackbar.make(this, stringId, Snackbar.LENGTH_SHORT)
+        val snackbar = Snackbar.make(this, msg, Snackbar.LENGTH_SHORT)
         val tvId = R.id.snackbar_text
         val tv = snackbar.view.findViewById<TextView>(tvId)
         tv?.setTextColor(Color.WHITE)
@@ -90,8 +90,8 @@ fun View.showMessage(@StringRes stringId: Int) {
     }
 }
 
-fun Activity.showMessage(@StringRes stringId: Int) {
-    this.findViewById<View>(android.R.id.content).showMessage(stringId)
+fun Activity.showMessage(msg: String) {
+    this.findViewById<View>(android.R.id.content).showMessage(msg)
 }
 
 fun Activity.showSendFileScreen(archiveFilename: String) {
@@ -109,7 +109,7 @@ fun Activity.startActivitySafely(intent: Intent) {
     try {
         startActivity(intent)
     } catch (e: ActivityNotFoundException) {
-        this.showMessage(R.string.activity_not_found)
+        this.showMessage(resources.getString(R.string.activity_not_found))
     }
 }
 

android/uhabits-android/src/main/res/values/strings.xml

@@ -18,7 +18,10 @@
   ~ with this program. If not, see <http://www.gnu.org/licenses/>.
   -->
 
-<resources>
+<resources
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:ignore="MissingTranslation">
+
     <string name="app_name" >Loop Habit Tracker</string>
     <string name="main_activity_title">Habits</string>
     <string name="action_settings">Settings</string>
@@ -29,10 +32,22 @@
     <string name="add_habit">Add habit</string>
     <string name="color_picker_default_title">Change color</string>
     <string name="toast_habit_created">Habit created</string>
-    <string name="toast_habit_deleted">Habits deleted</string>
-    <string name="toast_habit_changed">Habit changed</string>
-    <string name="toast_habit_archived">Habits archived</string>
-    <string name="toast_habit_unarchived">Habits unarchived</string>
+    <plurals name="toast_habits_changed">
+        <item quantity="one">Habit changed</item>
+        <item quantity="other">Habits changed</item>
+    </plurals>
+    <plurals name="toast_habits_deleted">
+        <item quantity="one">Habit deleted</item>
+        <item quantity="other">Habits deleted</item>
+    </plurals>
+    <plurals name="toast_habits_archived">
+        <item quantity="one">Habit archived</item>
+        <item quantity="other">Habits archived</item>
+    </plurals>
+    <plurals name="toast_habits_unarchived">
+        <item quantity="one">Habit unarchived</item>
+        <item quantity="other">Habits unarchived</item>
+    </plurals>
     <string name="title_activity_show_habit" translatable="false"/>
     <string name="overview">Overview</string>
     <string name="habit_strength">Habit strength</string>
@@ -79,8 +94,14 @@
     <string name="hint_title">Did you know?</string>
     <string name="hint_drag">To rearrange the entries, press-and-hold on the name of the habit, then drag it to the correct place.</string>
     <string name="hint_landscape">You can see more days by putting your phone in landscape mode.</string>
-    <string name="delete_habits">Delete Habits</string>
-    <string name="delete_habits_message">The habits will be permanently deleted. This action cannot be undone.</string>
+    <plurals name="delete_habits_title">
+        <item quantity="one">Delete habit?</item>
+        <item quantity="other">Delete habits?</item>
+    </plurals>
+    <plurals name="delete_habits_message">
+        <item quantity="one">The habit will be permanently deleted. This action cannot be undone.</item>
+        <item quantity="other">The habits will be permanently deleted. This action cannot be undone.</item>
+    </plurals>
     <string name="habit_not_found">Habit deleted / not found</string>
     <string name="weekends">Weekends</string>
     <string name="any_weekday">Monday to Friday</string>

android/uhabits-core/src/main/java/org/isoron/uhabits/core/ui/screens/habits/list/ListHabitsSelectionMenuBehavior.java

@@ -106,7 +106,7 @@ public class ListHabitsSelectionMenuBehavior
             commandRunner.run(new DeleteHabitsCommand(habitList, selected)
             );
             adapter.clearSelection();
-        });
+        }, selected.size());
     }
 
     public void onEditHabits()
@@ -137,7 +137,8 @@ public class ListHabitsSelectionMenuBehavior
                              @NonNull OnColorPickedCallback callback);
 
         void showDeleteConfirmationScreen(
-            @NonNull OnConfirmedCallback callback);
+            @NonNull OnConfirmedCallback callback,
+            int quantity);
 
         void showEditHabitsScreen(@NonNull List<Habit> selected);
     }