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feat: implement MVP version of Swarnam

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README.md
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# Obsidian Sample Plugin # Swarnam
This is a sample plugin for Obsidian (https://obsidian.md). A no-frills web code blocks plugin for Obsidian.
This project uses Typescript to provide type checking and documentation. ## Usage
The repo depends on the latest plugin API (obsidian.d.ts) in Typescript Definition format, which contains TSDoc comments describing what it does.
**Note:** The Obsidian API is still in early alpha and is subject to change at any time! Install the extension from Obsidian community plugins list (you need to enable this first from
Settings).
This sample plugin demonstrates some of the basic functionality the plugin API can do. To create a new Swarnam block, you need to open a block code snippet and give it the `swarnam` tag
- Adds a ribbon icon, which shows a Notice when clicked. like so:
- Adds a command "Open Sample Modal" which opens a Modal.
- Adds a plugin setting tab to the settings page.
- Registers a global click event and output 'click' to the console.
- Registers a global interval which logs 'setInterval' to the console.
## First time developing plugins? ```swarnam
<h1>Hello, world</h1>
Quick starting guide for new plugin devs:
- Check if [someone already developed a plugin for what you want](https://obsidian.md/plugins)! There might be an existing plugin similar enough that you can partner up with.
- Make a copy of this repo as a template with the "Use this template" button (login to GitHub if you don't see it).
- Clone your repo to a local development folder. For convenience, you can place this folder in your `.obsidian/plugins/your-plugin-name` folder.
- Install NodeJS, then run `npm i` in the command line under your repo folder.
- Run `npm run dev` to compile your plugin from `main.ts` to `main.js`.
- Make changes to `main.ts` (or create new `.ts` files). Those changes should be automatically compiled into `main.js`.
- Reload Obsidian to load the new version of your plugin.
- Enable plugin in settings window.
- For updates to the Obsidian API run `npm update` in the command line under your repo folder.
## Releasing new releases
- Update your `manifest.json` with your new version number, such as `1.0.1`, and the minimum Obsidian version required for your latest release.
- Update your `versions.json` file with `"new-plugin-version": "minimum-obsidian-version"` so older versions of Obsidian can download an older version of your plugin that's compatible.
- Create new GitHub release using your new version number as the "Tag version". Use the exact version number, don't include a prefix `v`. See here for an example: https://github.com/obsidianmd/obsidian-sample-plugin/releases
- Upload the files `manifest.json`, `main.js`, `styles.css` as binary attachments. Note: The manifest.json file must be in two places, first the root path of your repository and also in the release.
- Publish the release.
> You can simplify the version bump process by running `npm version patch`, `npm version minor` or `npm version major` after updating `minAppVersion` manually in `manifest.json`.
> The command will bump version in `manifest.json` and `package.json`, and add the entry for the new version to `versions.json`
## Adding your plugin to the community plugin list
- Check https://github.com/obsidianmd/obsidian-releases/blob/master/plugin-review.md
- Publish an initial version.
- Make sure you have a `README.md` file in the root of your repo.
- Make a pull request at https://github.com/obsidianmd/obsidian-releases to add your plugin.
## How to use
- Clone this repo.
- Make sure your NodeJS is at least v16 (`node --version`).
- `npm i` or `yarn` to install dependencies.
- `npm run dev` to start compilation in watch mode.
## Manually installing the plugin
- Copy over `main.js`, `styles.css`, `manifest.json` to your vault `VaultFolder/.obsidian/plugins/your-plugin-id/`.
## Improve code quality with eslint (optional)
- [ESLint](https://eslint.org/) is a tool that analyzes your code to quickly find problems. You can run ESLint against your plugin to find common bugs and ways to improve your code.
- To use eslint with this project, make sure to install eslint from terminal:
- `npm install -g eslint`
- To use eslint to analyze this project use this command:
- `eslint main.ts`
- eslint will then create a report with suggestions for code improvement by file and line number.
- If your source code is in a folder, such as `src`, you can use eslint with this command to analyze all files in that folder:
- `eslint .\src\`
## Funding URL
You can include funding URLs where people who use your plugin can financially support it.
The simple way is to set the `fundingUrl` field to your link in your `manifest.json` file:
```json
{
"fundingUrl": "https://buymeacoffee.com"
}
``` ```
If you have multiple URLs, you can also do: When you preview this, it'll show the source and render the HTML side-by-side. You can hover on the
top-right and click the `</>` icon to edit the snippet to make some changes.
```json You can also add CSS and JS by separating them with `---*---` like so:
{
"fundingUrl": { ```swarnam
"Buy Me a Coffee": "https://buymeacoffee.com", <h1 id="h1">Hello world</h1>
"GitHub Sponsor": "https://github.com/sponsors",
"Patreon": "https://www.patreon.com/" ---*---
}
h1 {
font-family: "Manjari";
color: red;
animation: rainbow 5s ease infinite forwards;
} }
@keyframes rainbow {
0% { filter: hue-rotate(0); }
100% { filter: hue-rotate(360deg); }
}
---*---
let i = 0;
setInterval(() => {
h1.textContent = `${["Hello", "Hola", "നമസ്കാരം"][i++ % 3]} Obsidian!`;
}, 1500)
``` ```
## API Documentation This'll render the three snippets on the left side and show the preview of a web page that has all
these 3 blocks injected.
See https://github.com/obsidianmd/obsidian-api ## How does it work
We split the code block snippet into 3 parts and form an HTML document string by injecting the CSS
and JS pieces into `<style>` and `<script>` tags. Once we have the final HTML document, we convert
this into Base64 and create a data URI. Finally, an `<iframe>` element is created and the data URI
is given as the `src`. Data URIs of mime type `text/html` and base64 enoding can be rendered by most
browsers including the Chromium renderer Obsidian is built on top of. There are no additional build
steps involved and thus, this is not a full-blown replacement for something like Sandpack.

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main.ts
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import { App, Editor, MarkdownView, Modal, Notice, Plugin, PluginSettingTab, Setting } from 'obsidian'; import { Plugin } from "obsidian";
// Remember to rename these classes and interfaces! const PREFIX = "swarnam";
interface MyPluginSettings { const SWARNAM_CSS = `
mySetting: string; .swarnam-root {
--${PREFIX}-html-color: #e34c26;
--${PREFIX}-css-color: #2965f1;
--${PREFIX}-js-color: #f0db4f;
--${PREFIX}-box-padding: var(--size-4-3) var(--size-4-4);
--${PREFIX}-border-color: var(--divider-color);
--${PREFIX}-border-radius: var(--code-radius);
--${PREFIX}-source-font: var(--font-monospace);
--${PREFIX}-source-font-size: var(--code-size);
display: flex;
align-items: stretch;
width: 100%;
} }
const DEFAULT_SETTINGS: MyPluginSettings = { .swarnam-root.error {
mySetting: 'default' display: block;
padding: var(--${PREFIX}-box-padding);
background-color: var(--code-background);
text-align: center;
.icon {
font-family: "Apple Emoji Color", sans-serif;
font-size: 1.5em;
}
} }
export default class MyPlugin extends Plugin { .swarnam-source-root {
settings: MyPluginSettings; flex: 1 1 0;
overflow-x: scroll;
display: flex;
align-items: stretch;
flex-direction: column;
}
.swarnam-preview {
flex: 1 1 0;
border: 1px solid var(--${PREFIX}-border-color);
border-left: 0;
border-top-right-radius: var(--${PREFIX}-border-radius);
border-bottom-right-radius: var(--${PREFIX}-border-radius);
padding: var(--${PREFIX}-box-padding);
}
.swarnam-source-container {
position: relative;
flex: 1 1 0;
& + & {
border-top: 1px solid var(--${PREFIX}-border-color);
border-top-left-radius: 0;
border-top-right-radius: 0;
}
}
.markdown-rendered .swarnam-source {
height: 100%;
margin: 0;
font-family: var(--${PREFIX}-source-font);
font-size: var(--${PREFIX}-source-font-size);
white-space: pre;
}
.swarnam-badge {
position: absolute;
top: calc(var(--size-4-3) / 1.5);
right: calc(var(--size-4-3) / 1.5);
font-size: 0.65em;
}
.swarnam-html-badge {
color: var(--${PREFIX}-html-color);
}
.swarnam-css-badge {
color: var(--${PREFIX}-css-color);
}
.swarnam-js-badge {
color: var(--${PREFIX}-js-color);
}
`;
function base64ToBytes(base64: string) {
const binString = atob(base64);
// @ts-expect-error
return Uint8Array.from(binString, (m) => m.codePointAt(0));
}
function bytesToBase64(bytes: Uint8Array) {
const binString = Array.from(bytes, (byte) =>
String.fromCodePoint(byte)
).join("");
return btoa(binString);
}
function asBase64(text: string) {
console.log({ text });
const b64 = bytesToBase64(new TextEncoder().encode(text));
console.log(console.log(new TextDecoder().decode(base64ToBytes(b64))));
return b64;
}
function getIframeDoc(htmlSource: string, cssSource: string, jsSource: string) {
const isDarkMode = window.matchMedia(
"(prefers-color-scheme: dark)"
).matches;
return `
<style>
body { font-family: sans-serif; color: ${isDarkMode ? "#fff" : "#000"} }
</style>
<style>
${cssSource}
</style>
<div class="swarnam-html-container">
${htmlSource}
</div>
<script>
${jsSource}
</script>
`;
}
function showError(msg: string, root: HTMLElement) {
root.classList.add("error");
root.createEl("p", { cls: "icon", text: "⚠️" });
root.createEl("p", { text: msg });
}
export default class SwarnamPlugin extends Plugin {
async onload() { async onload() {
await this.loadSettings(); this.registerMarkdownCodeBlockProcessor(
"swarnam",
(source, el, ctx) => {
const root = el.createDiv({ cls: "swarnam-root" });
const head = el.ownerDocument.head;
// This creates an icon in the left ribbon. head.createEl("style", {
const ribbonIconEl = this.addRibbonIcon('dice', 'Sample Plugin', (evt: MouseEvent) => { text: SWARNAM_CSS,
// Called when the user clicks the icon.
new Notice('This is a notice!');
});
// Perform additional things with the ribbon
ribbonIconEl.addClass('my-plugin-ribbon-class');
// This adds a status bar item to the bottom of the app. Does not work on mobile apps.
const statusBarItemEl = this.addStatusBarItem();
statusBarItemEl.setText('Status Bar Text');
// This adds a simple command that can be triggered anywhere
this.addCommand({
id: 'open-sample-modal-simple',
name: 'Open sample modal (simple)',
callback: () => {
new SampleModal(this.app).open();
}
});
// This adds an editor command that can perform some operation on the current editor instance
this.addCommand({
id: 'sample-editor-command',
name: 'Sample editor command',
editorCallback: (editor: Editor, view: MarkdownView) => {
console.log(editor.getSelection());
editor.replaceSelection('Sample Editor Command');
}
});
// This adds a complex command that can check whether the current state of the app allows execution of the command
this.addCommand({
id: 'open-sample-modal-complex',
name: 'Open sample modal (complex)',
checkCallback: (checking: boolean) => {
// Conditions to check
const markdownView = this.app.workspace.getActiveViewOfType(MarkdownView);
if (markdownView) {
// If checking is true, we're simply "checking" if the command can be run.
// If checking is false, then we want to actually perform the operation.
if (!checking) {
new SampleModal(this.app).open();
}
// This command will only show up in Command Palette when the check function returns true
return true;
}
}
}); });
// This adds a settings tab so the user can configure various aspects of the plugin let [
this.addSettingTab(new SampleSettingTab(this.app, this)); htmlSource = "",
cssSource = "",
jsSource = "",
// eslint-disable-next-line prefer-const
...others
] = source.split(/^\s*---\*---\s*$/m);
// If the plugin hooks up any global DOM events (on parts of the app that doesn't belong to this plugin) if (others.length > 0) {
// Using this function will automatically remove the event listener when this plugin is disabled. showError(
this.registerDomEvent(document, 'click', (evt: MouseEvent) => { "Swarnam only supports HTML, CSS and JS blocks but your snippet has more than 3 blocks.",
console.log('click', evt); root
);
return;
}
htmlSource = htmlSource.trim();
cssSource = cssSource.trim();
jsSource = jsSource.trim();
if (!htmlSource) {
showError(
"A Swarnam block must at least contain HTML",
root
);
return;
}
const sourceRoot = root.createDiv({
cls: "swarnam-source-root",
}); });
// When registering intervals, this function will automatically clear the interval when the plugin is disabled. const htmlContainer = sourceRoot.createDiv({
this.registerInterval(window.setInterval(() => console.log('setInterval'), 5 * 60 * 1000)); cls: "swarnam-source-container",
});
const htmlEl = htmlContainer.createEl("pre", {
cls: "swarnam-source swarnam-html-source",
});
htmlContainer.createDiv({
text: "HTML",
cls: "swarnam-badge swarnam-html-badge",
});
htmlEl.setText(htmlSource);
if (cssSource) {
const cssContainer = sourceRoot.createDiv({
cls: "swarnam-source-container",
});
const cssEl = cssContainer.createEl("pre", {
cls: "swarnam-source swarnam-css-source",
});
cssContainer.createDiv({
text: "CSS",
cls: "swarnam-badge swarnam-css-badge",
});
cssEl.setText(cssSource);
} }
onunload() { if (jsSource) {
const jsContainer = sourceRoot.createDiv({
cls: "swarnam-source-container",
});
const jsEl = jsContainer.createEl("pre", {
cls: "swarnam-source swarnam-js-source",
});
jsContainer.createDiv({
text: "JS",
cls: "swarnam-badge swarnam-js-badge",
});
jsEl.setText(jsSource);
} }
async loadSettings() { const iframeEl = root.createEl("iframe", {
this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData()); cls: "swarnam-preview",
} });
async saveSettings() { iframeEl.src = `data:text/html;base64;charset=UTF-8,${asBase64(
await this.saveData(this.settings); getIframeDoc(htmlSource, cssSource, jsSource)
} )}`;
} }
);
class SampleModal extends Modal {
constructor(app: App) {
super(app);
}
onOpen() {
const {contentEl} = this;
contentEl.setText('Woah!');
}
onClose() {
const {contentEl} = this;
contentEl.empty();
}
}
class SampleSettingTab extends PluginSettingTab {
plugin: MyPlugin;
constructor(app: App, plugin: MyPlugin) {
super(app, plugin);
this.plugin = plugin;
}
display(): void {
const {containerEl} = this;
containerEl.empty();
new Setting(containerEl)
.setName('Setting #1')
.setDesc('It\'s a secret')
.addText(text => text
.setPlaceholder('Enter your secret')
.setValue(this.plugin.settings.mySetting)
.onChange(async (value) => {
this.plugin.settings.mySetting = value;
await this.plugin.saveSettings();
}));
} }
} }

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manifest.json
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{ {
"id": "sample-plugin", "id": "swarnam",
"name": "Sample Plugin", "name": "Swarnam",
"version": "1.0.0", "version": "1.0.0",
"minAppVersion": "0.15.0", "minAppVersion": "0.15.0",
"description": "Demonstrates some of the capabilities of the Obsidian API.", "description": "A no-frills web code blocks plugin for Obsidian.",
"author": "Obsidian", "author": "runofthemillgeek",
"authorUrl": "https://obsidian.md", "authorUrl": "https://dg.sangeeth.dev",
"fundingUrl": "https://obsidian.md/pricing", "fundingUrl": "https://dg.sangeeth.dev",
"isDesktopOnly": false "isDesktopOnly": true
} }

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