Disable backspace in Atom-shell

问题

I've been scouring the interwebz and Atom-shell documentation trying to find out how to disable the back() functionality of the backspace key within a browser window.

I would prefer not to have to resort to a javascript onkeydown listener (which works) and rather use something more native and at more of the application level instead of the browser window level.

回答1:

The only way I have figured out to do this without the onkeydown listener is with a global-shortcut and the ipc events in the Electron api.

First a disclaimer...

Disabling any key with a global shortcut really does disable it GLOBALLY on your computer! PLEASE BE CAREFUL WHEN USING GLOBAL SHORTCUTS! If you forget to unregister your shortcut, or do not handle it properly, you will find it difficult to fix your mistake without backspace!

That said this is what worked for me...

const { app, ipcMain,
    globalShortcut,
    BrowserWindow,
} = require('electron');

app.on('ready', () => {

    // Create the browser window
    let mainWindow = new BrowserWindow({width: 800, height: 600});

    // and load the index.html of the app
    mainWindow.loadUrl('file://' + __dirname + '/index.html');

    // Register a 'Backspace' shortcut listener when focused on window
    mainWindow.on('focus', () => {

        if (mainWindow.isFocused()) {
            globalShortcut.register('Backspace', () => {

                // Provide feedback or logging here 
                // If you leave this section blank, you will get no
                // response when you try the shortcut (i.e. Backspace).

                console.log('Backspace was pressed!'); //comment-out or delete when ready.
            });
        });
    });

    //  ** THE IMPORTANT PART **
    // Unregister a 'Backspace' shortcut listener when leaving window.
    mainWindow.on('blur', () => {

        globalShortcut.unregister('Backspace');
        console.log('Backspace is unregistered!'); //comment-out or delete when ready.
    });
});

Alternatively you could add the shortcut inside an ipc "Toggle" event handler like this...

// In the main process
ipcMain.on('disableKey-toggle', (event, keyToDisable) => {
    if (!globalShortcut.isRegistered(keyToDisable){

        globalShortcut.register(keyToDisable, () => {
            console.log(keyToDisable+' is registered!'); //comment-out or delete when ready.

        });
    } else {

        globalShortcut.unregister(keyToDisable);
        console.log(keyToDisable+' is unregistered!'); //comment-out or delete when ready.
    }
});

// In the render process send the accelerator of the keyToDisable.
// Here we use the 'Backspace' accelerator.
const { ipcRenderer } = require('electron');
ipcRenderer.send('disableKey-toggle', 'Backspace');

来源：https://stackoverflow.com/questions/27829839/disable-backspace-in-atom-shell

标签

javascript

electron