How do get the file content for a registered view

[ndesmic]

I’m trying to make a plugin to operate on some custom file types but I don’t really understand what the process flow is for getting a handle to the opened file when the user clicks on it in the sidebar. For example this should open a simple text file:

export default class MyPlugin extends Plugin {
	settings: MyPluginSettings;

	async onload() {
		this.registerExtensions(["txt"], "text-view");
		this.registerView("text-view", (leaf) => new TextView(leaf));
	}

	onunload() {
	}

	async loadSettings() {
		this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
	}

	async saveSettings() {
		await this.saveData(this.settings);
	}
}

export class TextView extends FileView {
	filePath: string | null;

	constructor(leaf: WorkspaceLeaf){
		super(leaf);
	}
	getViewType(): string {
		return "text-view";
	}
	getDisplayText(): string {
		return "Text View";
	}
	protected async onOpen(): Promise<void> {
		const container = this.containerEl.children[1];
		container.empty();

		//how do I get a file reference?
		const file = ???

		if(file){
			const content = await this.app.vault.read(file);
			container.createEl("pre", { text: content });
		} else {
			container.createEl("p", { text: "File not found." });
		}
	}
	async onClose(){

	}
}

FileView supposedly has a “file” property but it doesn’t exist when onOpen is called and I can’t find anything that says how this information might be forwarded to the view so I’m not sure how to wire the content up for display.

[mnaoumov]

onLoadFile - Developer Documentation