wails/v2/internal/runtime/js/desktop/darwin.js

/*
 _	   __	  _ __
| |	 / /___ _(_) /____
| | /| / / __ `/ / / ___/
| |/ |/ / /_/ / / (__  )
|__/|__/\__,_/_/_/____/
The lightweight framework for web-like apps
(c) Lea Anthony 2019-present
*/
/* jshint esversion: 6 */

/**
 * Initialises platform specific code
 */

// import * as common from './common';
const common = require('./common');

export const System = {
    ...common,
    Platform: () => "darwin",
}

export function SendMessage(message) {
    window.webkit.messageHandlers.external.postMessage(message);
}

export function Init() {

    // Setup drag handler
    // Based on code from: https://github.com/patr0nus/DeskGap
    window.addEventListener('mousedown', function (e) {
        let currentElement = e.target;
        while (currentElement != null) {
            if (currentElement.hasAttribute('data-wails-no-drag')) {
                break;
            } else if (currentElement.hasAttribute('data-wails-drag')) {
                window.webkit.messageHandlers.windowDrag.postMessage(null);
                break;
            }
            currentElement = currentElement.parentElement;
        }
    });

    // Setup context menu hook
    window.addEventListener('contextmenu', function (e) {
        let currentElement = e.target;
        let contextMenuId;
        while (currentElement != null) {
            contextMenuId = currentElement.dataset['wails-context-menu-id'];
            if (contextMenuId != null) {
                break;
            }
            currentElement = currentElement.parentElement;
        }
        if (contextMenuId != null || window.disableWailsDefaultContextMenu) {
            e.preventDefault();
        }
        if( contextMenuId != null ) {
            let contextData = currentElement.dataset['wails-context-menu-data'];
            let message = {
                id: contextMenuId,
                data: contextData || "",
            };
            window.webkit.messageHandlers.contextMenu.postMessage(JSON.stringify(message));
        }
    });
}