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add confirmation message when closing desktop app with unsaved changes

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This commit is contained in:
Julian Descottes 2017-02-19 13:19:09 +01:00
parent c6c64af2fd
commit 974450837e
1 changed files with 24 additions and 1 deletions
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25
src/js/service/BeforeUnloadService.js
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@ -6,15 +6,38 @@
};
ns.BeforeUnloadService.prototype.init = function () {
if (pskl.utils.Environment.detectNodeWebkit()) {
// Add a dedicated listener to window 'close' event in nwjs environment.
var win = require('nw.gui').Window.get();
win.on('close', this.onNwWindowClose.bind(this, win));
}
window.addEventListener('beforeunload', this.onBeforeUnload.bind(this));
};
/**
* In nw.js environment "onbeforeunload" is not triggered when closing the window.
* Polyfill the behavior here.
*/
ns.BeforeUnloadService.prototype.onNwWindowClose = function (win) {
var msg = this.onBeforeUnload();
if (msg) {
if (!window.confirm(msg)) {
return false;
}
}
win.close(true);
};
ns.BeforeUnloadService.prototype.onBeforeUnload = function (evt) {
pskl.app.backupService.backup();
if (pskl.app.savedStatusService.isDirty()) {
var confirmationMessage = 'Your Piskel seems to have unsaved changes';
(evt || window.event).returnValue = confirmationMessage;
evt = evt || window.event;
if (evt) {
evt.returnValue = confirmationMessage;
}
return confirmationMessage;
}
};