Add color scheme duplicate and delete actions

app/ui/src/main/java/de/mm20/launcher2/ui/settings/colorscheme/ThemesSettingsScreen.kt

@@ -11,16 +11,20 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.ContentCopy
+import androidx.compose.material.icons.rounded.Delete
 import androidx.compose.material.icons.rounded.Edit
 import androidx.compose.material.icons.rounded.MoreVert
 import androidx.compose.material.icons.rounded.RadioButtonChecked
 import androidx.compose.material.icons.rounded.RadioButtonUnchecked
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -51,6 +55,8 @@ fun ThemesSettingsScreen() {
     val selectedTheme by viewModel.selectedTheme.collectAsStateWithLifecycle(null)
     val themes by viewModel.themes.collectAsStateWithLifecycle(emptyList())
 
+    var deleteTheme by remember { mutableStateOf<Theme?>(null) }
+
     PreferenceScreen(title = stringResource(R.string.preference_screen_colors)) {
         item {
             PreferenceCategory {
@@ -85,6 +91,28 @@ fun ThemesSettingsScreen() {
                                             }
                                         )
                                     }
+                                    DropdownMenuItem(
+                                        leadingIcon = {
+                                            Icon(Icons.Rounded.ContentCopy, null)
+                                        },
+                                        text = { Text(stringResource(R.string.duplicate)) },
+                                        onClick = {
+                                            viewModel.duplicate(theme)
+                                            showMenu = false
+                                        }
+                                    )
+                                    if (!theme.builtIn) {
+                                        DropdownMenuItem(
+                                            leadingIcon = {
+                                                Icon(Icons.Rounded.Delete, null)
+                                            },
+                                            text = { Text(stringResource(R.string.menu_delete)) },
+                                            onClick = {
+                                                deleteTheme = theme
+                                                showMenu = false
+                                            }
+                                        )
+                                    }
                                 }
                             }
                         },
@@ -96,6 +124,29 @@ fun ThemesSettingsScreen() {
             }
         }
     }
+    if (deleteTheme != null) {
+        AlertDialog(
+            onDismissRequest = { deleteTheme = null },
+            text = { Text(stringResource(R.string.confirmation_delete_color_scheme, deleteTheme!!.name)) },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        viewModel.delete(deleteTheme!!)
+                        deleteTheme = null
+                    }
+                ) {
+                    Text(stringResource(android.R.string.ok))
+                }
+            },
+            dismissButton = {
+                TextButton(
+                    onClick = { deleteTheme = null }
+                ) {
+                    Text(stringResource(android.R.string.cancel))
+                }
+            }
+        )
+    }
 }
 
 @Composable

app/ui/src/main/java/de/mm20/launcher2/ui/settings/colorscheme/ThemesSettingsScreenVM.kt

@@ -49,4 +49,12 @@ class ThemesSettingsScreenVM : ViewModel(), KoinComponent {
             }
         }
     }
+
+    fun duplicate(theme: Theme) {
+        themeRepository.createTheme(theme.copy(id = UUID.randomUUID()))
+    }
+
+    fun delete(theme: Theme) {
+        themeRepository.deleteTheme(theme)
+    }
 }

core/i18n/src/main/res/values/strings.xml

@@ -824,4 +824,5 @@
     <string name="note_widget_file_read_error_description">The linked file could not be read. Possibly, it has been moved or deleted. A copy has been restored from the launcher\'s internal storage. If you edit the note, the linked file will possibly be overwritten.</string>
     <string name="note_widget_file_write_error">Error saving note</string>
     <string name="note_widget_file_write_error_description">The note could not be written to the linked file. Possibly, it has been moved or deleted. A copy has been saved to the launcher\'s internal storage.</string>
+    <string name="confirmation_delete_color_scheme">Do you really want to delete the color scheme %1$s?</string>
 </resources>

data/themes/src/main/java/de/mm20/launcher2/themes/ThemeRepository.kt

@@ -79,4 +79,10 @@ class ThemeRepository(
         )
     }
 
+    fun deleteTheme(theme: Theme) {
+        scope.launch {
+            database.themeDao().delete(theme.id)
+        }
+    }
+
 }