Do not show soft keyboard when locked out on keyguard UI

- Split password entry enabled and input enabled into two states;
- Disable input during lock check;
- Disable password entry when locked out;
- Don't show soft keyboard if password entry is disabled on resume;
- Auto show soft keyboard when password entry becomes enabled;

Bug:20542149
Change-Id: Iffe3f205776143ac21e25e337d5b7a0e6994ebf2

3 files changed, 19 insertions, 3 deletions

diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java b/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java
index 54bbd5a..6295de4 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardAbsKeyInputView.java
@@ -110,7 +110,7 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout
 
     protected void verifyPasswordAndUnlock() {
         final String entry = getPasswordText();
-        setPasswordEntryEnabled(false);
+        setPasswordEntryInputEnabled(false);
         if (mPendingLockCheck != null) {
             mPendingLockCheck.cancel(false);
         }
@@ -121,7 +121,7 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout
                 new LockPatternChecker.OnCheckCallback() {
                     @Override
                     public void onChecked(boolean matched) {
-                        setPasswordEntryEnabled(true);
+                        setPasswordEntryInputEnabled(true);
                         mPendingLockCheck = null;
                         onPasswordChecked(entry, matched);
                     }
@@ -152,6 +152,7 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout
     protected abstract void resetPasswordText(boolean animate);
     protected abstract String getPasswordText();
     protected abstract void setPasswordEntryEnabled(boolean enabled);
+    protected abstract void setPasswordEntryInputEnabled(boolean enabled);
 
     // Prevent user from using the PIN/Password entry until scheduled deadline.
     protected void handleAttemptLockout(long elapsedRealtimeDeadline) {
diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardPasswordView.java b/packages/Keyguard/src/com/android/keyguard/KeyguardPasswordView.java
index f18c451..c9ad728 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardPasswordView.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardPasswordView.java
@@ -74,7 +74,12 @@ public class KeyguardPasswordView extends KeyguardAbsKeyInputView
 
     protected void resetState() {
         mSecurityMessageDisplay.setMessage(R.string.kg_password_instructions, false);
+        final boolean wasDisabled = mPasswordEntry.isEnabled();
         setPasswordEntryEnabled(true);
+        setPasswordEntryInputEnabled(true);
+        if (wasDisabled) {
+            mImm.showSoftInput(mPasswordEntry, InputMethodManager.SHOW_IMPLICIT);
+        }
     }
 
     @Override
@@ -95,7 +100,7 @@ public class KeyguardPasswordView extends KeyguardAbsKeyInputView
         post(new Runnable() {
             @Override
             public void run() {
-                if (isShown()) {
+                if (isShown() && mPasswordEntry.isEnabled()) {
                     mPasswordEntry.requestFocus();
                     if (reason != KeyguardSecurityView.SCREEN_ON || mShowImeAtScreenOn) {
                         mImm.showSoftInput(mPasswordEntry, InputMethodManager.SHOW_IMPLICIT);
@@ -190,6 +195,11 @@ public class KeyguardPasswordView extends KeyguardAbsKeyInputView
 
     @Override
     protected void setPasswordEntryEnabled(boolean enabled) {
+        mPasswordEntry.setEnabled(enabled);
+    }
+
+    @Override
+    protected void setPasswordEntryInputEnabled(boolean enabled) {
         mPasswordEntryDisabler.setInputEnabled(enabled);
     }
 
diff --git a/packages/Keyguard/src/com/android/keyguard/KeyguardPinBasedInputView.java b/packages/Keyguard/src/com/android/keyguard/KeyguardPinBasedInputView.java
index 84b4cf8..ed0d4af 100644
--- a/packages/Keyguard/src/com/android/keyguard/KeyguardPinBasedInputView.java
+++ b/packages/Keyguard/src/com/android/keyguard/KeyguardPinBasedInputView.java
@@ -72,6 +72,11 @@ public abstract class KeyguardPinBasedInputView extends KeyguardAbsKeyInputView
     }
 
     @Override
+    protected void setPasswordEntryInputEnabled(boolean enabled) {
+        mPasswordEntry.setEnabled(enabled);
+    }
+
+    @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         if (KeyEvent.isConfirmKey(keyCode)) {
             performClick(mOkButton);