feat: add linear scale answer type and associated settings

Signed-off-by: Christian Hartmann <chris-hartmann@gmx.de>

Author: Chartman123

lib/Constants.php

@@ -75,6 +75,7 @@ class Constants {
 	public const ANSWER_TYPE_DATETIME = 'datetime';
 	public const ANSWER_TYPE_TIME = 'time';
 	public const ANSWER_TYPE_FILE = 'file';
+	public const ANSWER_TYPE_LINEARSCALE = 'linearscale';
 
 	// All AnswerTypes
 	public const ANSWER_TYPES = [
@@ -87,13 +88,15 @@ class Constants {
 		self::ANSWER_TYPE_DATETIME,
 		self::ANSWER_TYPE_TIME,
 		self::ANSWER_TYPE_FILE,
+		self::ANSWER_TYPE_LINEARSCALE,
 	];
 
 	// AnswerTypes, that need/have predefined Options
 	public const ANSWER_TYPES_PREDEFINED = [
 		self::ANSWER_TYPE_MULTIPLE,
 		self::ANSWER_TYPE_MULTIPLEUNIQUE,
-		self::ANSWER_TYPE_DROPDOWN
+		self::ANSWER_TYPE_DROPDOWN,
+		self::ANSWER_TYPE_LINEARSCALE
 	];
 
 	// AnswerTypes for date/time questions
@@ -155,6 +158,13 @@ class Constants {
 		'x-office/spreadsheet',
 	];
 
+	public const EXTRA_SETTINGS_LINEARSCALE = [
+		'optionsLowest' => ['integer'],
+		'optionsHighest' => ['integer'],
+		'optionsLabelLowest' => ['string'],
+		'optionsLabelHighest' => ['string'],
+	];
+
 	public const FILENAME_INVALID_CHARS = [
 		"\n",
 		'/',

lib/ResponseDefinitions.php

@@ -25,8 +25,12 @@
  *   allowedFileTypes?: list<string>,
  *   maxAllowedFilesCount?: int,
  *   maxFileSize?: int,
+ *   optionsHighest?: 2|3|4|5|6|7|8|9|10,
+ *   optionsLabelHighest?: string,
+ *   optionsLabelLowest?: string,
  *   optionsLimitMax?: int,
  *   optionsLimitMin?: int,
+ *   optionsLowest?: 0|1,
  *   shuffleOptions?: bool,
  *   validationRegex?: string,
  *   validationType?: string

lib/Service/FormsService.php

@@ -629,6 +629,9 @@ public function areExtraSettingsValid(array $extraSettings, string $questionType
 			case Constants::ANSWER_TYPE_FILE:
 				$allowed = Constants::EXTRA_SETTINGS_FILE;
 				break;
+			case Constants::ANSWER_TYPE_LINEARSCALE:
+				$allowed = Constants::EXTRA_SETTINGS_LINEARSCALE;
+				break;
 			default:
 				$allowed = [];
 		}
@@ -698,6 +701,14 @@ public function areExtraSettingsValid(array $extraSettings, string $questionType
 					return false;
 				}
 			}
+
+			// Special handling of linear scale validation
+		} elseif ($questionType === Constants::ANSWER_TYPE_LINEARSCALE) {
+			// Ensure limits are sane
+			if (isset($extraSettings['optionsLowest']) && ($extraSettings['optionsLowest'] < 0 || $extraSettings['optionsLowest'] > 1) ||
+				isset($extraSettings['optionsHighest']) && ($extraSettings['optionsHighest'] < 2 || $extraSettings['optionsHighest'] > 10)) {
+				return false;
+			}
 		}
 		return true;
 	}

openapi.json

@@ -426,6 +426,27 @@
                         "type": "integer",
                         "format": "int64"
                     },
+                    "optionsHighest": {
+                        "type": "integer",
+                        "format": "int64",
+                        "enum": [
+                            2,
+                            3,
+                            4,
+                            5,
+                            6,
+                            7,
+                            8,
+                            9,
+                            10
+                        ]
+                    },
+                    "optionsLabelHighest": {
+                        "type": "string"
+                    },
+                    "optionsLabelLowest": {
+                        "type": "string"
+                    },
                     "optionsLimitMax": {
                         "type": "integer",
                         "format": "int64"
@@ -434,6 +455,14 @@
                         "type": "integer",
                         "format": "int64"
                     },
+                    "optionsLowest": {
+                        "type": "integer",
+                        "format": "int64",
+                        "enum": [
+                            0,
+                            1
+                        ]
+                    },
                     "shuffleOptions": {
                         "type": "boolean"
                     },

src/components/Icons/IconLinearScale.vue

@@ -0,0 +1,45 @@
+<!--
+  - SPDX-FileCopyrightText: 2025 Christian Hartmann <chris-hartmann@gmx.de>
+  - SPDX-License-Identifier: AGPL-3.0-or-later
+-->
+
+<template>
+	<span
+		:aria-hidden="!title"
+		:aria-label="title"
+		class="material-design-icon drag-indicator-icon"
+		role="img"
+		v-bind="$attrs"
+		@click="$emit('click', $event)">
+		<svg
+			:fill="fillColor"
+			class="material-design-icon__svg"
+			:height="size"
+			:width="size"
+			viewBox="0 -960 960 960">
+			<path
+				d="M672-288q-71 0-123.38-44.36Q496.24-376.73 482.9-444H281q-11 26-35 43t-54 17q-40.32 0-68.16-27.77Q96-439.55 96-479.77 96-520 123.84-548q27.84-28 68.16-28 30 0 54 17t35.46 43H484q13.21-67.28 65.1-111.64Q601-672 672-672q79.68 0 135.84 56.23 56.16 56.22 56.16 136Q864-400 807.84-344 751.68-288 672-288Zm0-72q50 0 85-35t35-85q0-50-35-85t-85-35q-50 0-85 35t-35 85q0 50 35 85t85 35Z" />
+			<title v-if="title">{{ title }}</title>
+		</svg>
+	</span>
+</template>
+
+<script>
+export default {
+	name: 'IconLinearScale',
+	props: {
+		title: {
+			type: String,
+			default: '',
+		},
+		fillColor: {
+			type: String,
+			default: 'currentColor',
+		},
+		size: {
+			type: Number,
+			default: 20,
+		},
+	},
+}
+</script>