'use strict';

import * as vscode from 'vscode';

import { getEntry } from './util';

export default class HexdumpStatusBar {

private static s_instance: HexdumpStatusBar = null;

private _statusBarItem: vscode.StatusBarItem;

private _disposables: vscode.Disposable[] = [];

constructor() {

if (HexdumpStatusBar.s_instance) {

HexdumpStatusBar.s_instance.dispose();

}

this._statusBarItem = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Right);

vscode.window.onDidChangeActiveTextEditor((e) => {

if (e && e.document.languageId === 'hexdump') {

this._statusBarItem.show();

} else {

this._statusBarItem.hide();

}

}, null, this._disposables);

HexdumpStatusBar.s_instance = this;

}

static get instance() {

return HexdumpStatusBar.s_instance;

}

public dispose() {

this._statusBarItem.dispose;

if (HexdumpStatusBar.s_instance) {

HexdumpStatusBar.s_instance.dispose();

HexdumpStatusBar.s_instance = null;

}

this._disposables.forEach(d => d.dispose());

this._disposables = [];

}

get Item() {

return this._statusBarItem;

}

public update() {

let littleEndian = vscode.workspace.getConfiguration('hexdump').get('littleEndian');

this._statusBarItem.text = littleEndian ? 'hex' : 'HEX';

this._statusBarItem.tooltip = littleEndian ? 'Little Endian' : 'Big Endian';

let e = vscode.window.activeTextEditor;

// check if hexdump document

if (e && e.document.uri.scheme === 'hexdump') {

if (getEntry(e.document.uri).isDirty) {

this._statusBarItem.text += ' (modified)';

}

}

}

}