Add config menu framework

Options don't do anything as of now, but they are saved and loaded

src/config.ts

@@ -0,0 +1,110 @@
+import {PluginFile} from "@/file";
+import {CONFIG_FILENAME, JSON_MIME, STORAGE_PATH} from "@/const";
+import {Plugin} from "siyuan";
+import {SettingUtils} from "@/libs/setting-utils";
+import {validateColor} from "@/helper";
+
+type Options = {
+    autoResize: boolean,
+    background: string
+    analytics: boolean
+};
+
+export class PluginConfig {
+
+    private file: PluginFile;
+
+    options: Options;
+
+    constructor() {
+        this.file = new PluginFile(STORAGE_PATH, CONFIG_FILENAME, JSON_MIME);
+    }
+
+    async load() {
+        await this.file.loadFromSiYuanFS();
+        this.options = JSON.parse(this.file.getContent());
+        if(this.options == null) {
+            this.loadDefaultConfig();
+        }
+    }
+
+    private loadDefaultConfig() {
+        this.options = {
+            autoResize: true,
+            background: "#000000",
+            analytics: true
+        };
+    }
+
+    async save() {
+        this.file.setContent(JSON.stringify(this.options));
+        await this.file.save();
+    }
+
+    setConfig(config: Options) {
+        if(!validateColor(config.background)) {
+            alert("Invalid background color! Please enter an HEX color, like #000000 (black) or #FFFFFF (white)");
+            config.background = this.options.background;
+        }
+
+        this.options = config;
+    }
+
+}
+
+export class PluginConfigViewer {
+
+    config: PluginConfig;
+    settingUtils: SettingUtils;
+    plugin: Plugin;
+
+    constructor(config: PluginConfig, plugin: Plugin) {
+        this.config = config;
+        this.plugin = plugin;
+        this.populateSettingMenu();
+    }
+
+    populateSettingMenu() {
+
+        this.settingUtils = new SettingUtils({
+            plugin: this.plugin,
+            callback: async (data) => {
+                this.config.setConfig(data);
+                await this.config.save();
+            }
+        });
+
+        this.settingUtils.addItem({
+            key: "autoResize",
+            title: "Auto Resize",
+            description: "Enable to automatically resize the drawing area according to your strokes on new drawings",
+            value: this.config.options.autoResize,
+            type: 'checkbox'
+        });
+
+        this.settingUtils.addItem({
+            key: "background",
+            title: "Default Background Color",
+            description: "Default background color of the drawing area for new drawings in hexadecimal.",
+            value: this.config.options.background,
+            type: 'textarea',
+        });
+
+        this.settingUtils.addItem({
+            key: "analytics",
+            title: "Analytics",
+            description: `
+                Enable to send anonymous usage data to the developer.
+                <a href='https://massive.box'>Privacy</a>
+            `,
+            value: this.config.options.analytics,
+            type: 'checkbox'
+        });
+
+    }
+
+    load() {
+        return this.settingUtils.load();
+    }
+
+}

src/helper.ts

@@ -106,3 +106,10 @@ export function imgSrcToIDs(imgSrc: string | null): { fileID: string; syncID: st
     return assetPathToIDs(imgSrc);
 
 }
+
+export function validateColor(hex: string) {
+    hex = hex.replace('#', '');
+    return typeof hex === 'string'
+        && hex.length === 6
+        && !isNaN(Number('0x' + hex))
+}

src/index.ts

@@ -8,15 +8,23 @@ import {
 } from "@/helper";
 import {migrate} from "@/migration";
 import {EditorManager, PluginEditor} from "@/editor";
+import {PluginConfig, PluginConfigViewer} from "@/config";
 
 export default class DrawJSPlugin extends Plugin {
 
-    onload() {
+    config: PluginConfig;
+
+    async onload() {
 
         loadIcons(this);
         EditorManager.registerTab(this);
         migrate()
 
+        this.config = new PluginConfig();
+        await this.config.load();
+        let configViewer = new PluginConfigViewer(this.config, this);
+        await configViewer.load();
+
         this.protyleSlash = [{
             id: "insert-drawing",
             filter: ["Insert Drawing", "Add drawing", "whiteboard", "freehand", "graphics", "jsdraw"],