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joplin/packages/lib/services/plugins/api/JoplinViewsPanels.ts

131 lines
4.0 KiB
TypeScript

/* eslint-disable multiline-comment-style */
import Plugin from '../Plugin';
import createViewHandle from '../utils/createViewHandle';
import WebviewController, { ContainerType } from '../WebviewController';
import { ViewHandle } from './types';
/**
* Allows creating and managing view panels. View panels allow displaying any HTML
* content (within a webview) and updating it in real-time. For example it
* could be used to display a table of content for the active note, or
* display various metadata or graph.
*
* On desktop, view panels currently are displayed at the right of the sidebar, though can
* be moved with "View" > "Change application layout".
*
* On mobile, view panels are shown in a tabbed dialog that can be opened using a
* toolbar button.
*
* [View the demo plugin](https://github.com/laurent22/joplin/tree/dev/packages/app-cli/tests/support/plugins/toc)
*/
export default class JoplinViewsPanels {
private store: any;
private plugin: Plugin;
public constructor(plugin: Plugin, store: any) {
this.store = store;
this.plugin = plugin;
}
private controller(handle: ViewHandle): WebviewController {
return this.plugin.viewController(handle) as WebviewController;
}
/**
* Creates a new panel
*/
public async create(id: string): Promise<ViewHandle> {
if (!id) {
this.plugin.deprecationNotice('1.5', 'Creating a view without an ID is deprecated. To fix it, change your call to `joplin.views.panels.create("my-unique-id")`', true);
id = `${this.plugin.viewCount}`;
}
const handle = createViewHandle(this.plugin, id);
const controller = new WebviewController(handle, this.plugin.id, this.store, this.plugin.baseDir, ContainerType.Panel);
this.plugin.addViewController(controller);
return handle;
}
/**
* Sets the panel webview HTML
*/
public async setHtml(handle: ViewHandle, html: string): Promise<string> {
return this.controller(handle).html = html;
}
/**
* Adds and loads a new JS or CSS files into the panel.
*/
public async addScript(handle: ViewHandle, scriptPath: string): Promise<void> {
return this.controller(handle).addScript(scriptPath);
}
/**
* Called when a message is sent from the webview (using postMessage).
*
* To post a message from the webview to the plugin use:
*
* ```javascript
* const response = await webviewApi.postMessage(message);
* ```
*
* - `message` can be any JavaScript object, string or number
* - `response` is whatever was returned by the `onMessage` handler
*
* Using this mechanism, you can have two-way communication between the
* plugin and webview.
*
* See the [postMessage
* demo](https://github.com/laurent22/joplin/tree/dev/packages/app-cli/tests/support/plugins/post_messages) for more details.
*
*/
// eslint-disable-next-line @typescript-eslint/ban-types -- Old code before rule was applied
public async onMessage(handle: ViewHandle, callback: Function): Promise<void> {
return this.controller(handle).onMessage(callback);
}
/**
* Sends a message to the webview.
*
* The webview must have registered a message handler prior, otherwise the message is ignored. Use;
*
* ```javascript
* webviewApi.onMessage((message) => { ... });
* ```
*
* - `message` can be any JavaScript object, string or number
*
* The view API may have only one onMessage handler defined.
* This method is fire and forget so no response is returned.
*
* It is particularly useful when the webview needs to react to events emitted by the plugin or the joplin api.
*/
public postMessage(handle: ViewHandle, message: any): void {
return this.controller(handle).postMessage(message);
}
/**
* Shows the panel
*/
public async show(handle: ViewHandle, show = true): Promise<void> {
await this.controller(handle).show(show);
}
/**
* Hides the panel
*/
public async hide(handle: ViewHandle): Promise<void> {
await this.show(handle, false);
}
/**
* Tells whether the panel is visible or not
*/
public async visible(handle: ViewHandle): Promise<boolean> {
return this.controller(handle).visible;
}
}