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Add fingerprint authentication support via AuthPrompt signals #28

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Add fingerprint authentication support via AuthPrompt signals #28

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32 changes: 32 additions & 0 deletions extension.js
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Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,8 @@ export default class LockscreenExtension extends Extension {
};
}
);

this._connectFingerprintAuth(dialog);

// Removing the existing signal to use our custom one
const swipeSignalId = GObject.signal_lookup('end', gtype);
Expand Down Expand Up @@ -210,6 +212,35 @@ export default class LockscreenExtension extends Extension {
dialog._updateBackgrounds();
}

_connectFingerprintAuth(dialog) {
const authPrompt = dialog._authPrompt;
if (!authPrompt) {
warn('AuthPrompt not available, fingerprint detection skipped');
return;
}

// When a fingerprint verification message is shown (e.g. "Place your finger")
// treat it as a prompt being shown so blur/pause effects apply
authPrompt.connectObject(
'next', () => {
this._onPromptShow();
},
this
);

// Override _onVerificationComplete to detect successful fingerprint unlock
this._injectionManager.overrideMethod(
dialog, '_onVerificationComplete',
(original) => {
const self = this;
return function(...args) {
self._onPromptShow();
original.call(this, ...args);
};
}
);
}

_injectCreateBackground() {
this._injectionManager.overrideMethod(
Main.screenShield._dialog, '_createBackground',
Expand Down Expand Up @@ -430,6 +461,7 @@ export default class LockscreenExtension extends Extension {
this._injectAttempts = 0;

Main.screenShield._dialog._swipeTracker?.disconnectObject(this);
Main.screenShield._dialog._authPrompt?.disconnectObject(this);
this._tapAction?.disconnectObject(this);

// Return all window actors to window_group before destroying
Expand Down