I am building an Electron based application that contains a grid containing unique rows. I would like a context-menu that is specific to each row. Here is an example:
Although this screen shot is cropped, you can see there are multiple rows and each row contains separate data. Since I'd like to right-click on a row and get a unique context menu, I have implemented electron-context-menu, which does work on the first right click, but then subsequent right-clicks causes a stacking effect of context menus.
Specifically, here is what happens:
In React.JS, here is my listener, which collects the contextmenu
object as needed by the electron-context-menu
module:
handleContextMenu() {
this.props.contextMenu({
window: electron.remote.BrowserWindow.getFocusedWindow(),
prepend: (params, browserWindow) => [{
label: `Library Compare ${this.state.msn}`,
click: () => this.runLibCompare()
}],
append: (params, browserWindow) => [{
label: '---',
}]
})
};
Where this.props.contextMenu(...)
perculates up the React.JS components to be fed into:
const contextMenu = eRequire('electron-context-menu');
I have done some massive debugging and I don't think the issue is the module. The module I am using essentially organizes the information about the context menu and then uses electron.remote
functions and a menu.popup
function which comes from electron internals. Here is a link to the specific line in github.
const menu = (electron.Menu || electron.remote.Menu).buildFromTemplate(menuTpl);
menu.popup(electron.remote ? electron.remote.getCurrentWindow() : win);
This call to menu.popup
leads to this line in electron.
const remoteMemberFunction = function (...args) {
if (this && this.constructor === remoteMemberFunction) {
// Constructor call.
let ret = ipcRenderer.sendSync('ELECTRON_BROWSER_MEMBER_CONSTRUCTOR', metaId, member.name, wrapArgs(args))
return metaToValue(ret)
} else {
// Call member function.
let ret = ipcRenderer.sendSync('ELECTRON_BROWSER_MEMBER_CALL', metaId, member.name, wrapArgs(args))
return metaToValue(ret)
}
}
So I see a call to ipcRender.sendSync
-- however when I add debugging statements in ipcMain
's receiver of those calls, I don't see any output!
ipcMain.on('ELECTRON_BROWSER_MEMBER_CALL', function (event, id, method, args) {
try {
args = unwrapArgs(event.sender, args)
let obj = objectsRegistry.get(id)
if (obj == null) {
throwRPCError(`Cannot call function '${method}' on missing remote object ${id}`)
}
callFunction(event, obj[method], obj, args)
} catch (error) {
event.returnValue = exceptionToMeta(error)
}
})
When I added debug statements to the above function, I didn't see any output. And that is where my search his a wall.
I am using electron 1.4.15. I know this issue should be resolvable, after-all the Atom IDE (which is electron based) does not have this issue even though it has multiple context menus.
I think there is some memory I need to clear somewhere, I just can't figure out how to clear the stack of previous context menus!
The only workaround is to use Menu. setApplicationMenu(null) , however, this will disable all the menu shortcuts like F11 for toggling fullscreen etc. In new versions of Electron, you can set autoHideMenuBar: true while creating browserWindow, pressing Alt will show the menu bar again.
In Microsoft Windows, pressing the Application key or Shift+F10 opens a context menu for the region that has focus.
We imported the Menu and MenuItem modules using the remote module; then, we created a menu and appended our menuitems to it one by one. Further, we prevented the default action of right-click in chromium and replaced it with our menu. The creation of menus in Electron is a very simple task.
I solve this by first getting the target of the click using e.target. Then, depending on that, I call the corresponding contextmenu. If target hit is not in the list of targets for my app, I use a default contextmenu.
window.addEventListener(
"contextmenu",
e => {
e.preventDefault();
if (e.target.id === 'fullscr'){
console.log(e && e.target);
// e.preventDefault();
mymenu.popup(remote.getCurrentWindow());
}else{
editmenu.popup(remote.getCurrentWindow());
}
console.log(e.which);
},
false
);
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