| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.keyguard; |
| |
| import android.content.Context; |
| import android.graphics.Rect; |
| import android.os.UserHandle; |
| import android.text.Editable; |
| import android.text.InputType; |
| import android.text.TextUtils; |
| import android.text.TextWatcher; |
| import android.text.method.TextKeyListener; |
| import android.util.AttributeSet; |
| import android.view.KeyEvent; |
| import android.view.View; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.Interpolator; |
| import android.view.inputmethod.EditorInfo; |
| import android.view.inputmethod.InputMethodInfo; |
| import android.view.inputmethod.InputMethodManager; |
| import android.view.inputmethod.InputMethodSubtype; |
| import android.widget.TextView; |
| import android.widget.TextView.OnEditorActionListener; |
| |
| import com.android.internal.widget.TextViewInputDisabler; |
| import com.android.systemui.R; |
| |
| import java.util.List; |
| /** |
| * Displays an alphanumeric (latin-1) key entry for the user to enter |
| * an unlock password |
| */ |
| public class KeyguardPasswordView extends KeyguardAbsKeyInputView |
| implements KeyguardSecurityView, OnEditorActionListener, TextWatcher { |
| |
| private final boolean mShowImeAtScreenOn; |
| private final int mDisappearYTranslation; |
| |
| // A delay constant to be used in a workaround for the situation where InputMethodManagerService |
| // is not switched to the new user yet. |
| // TODO: Remove this by ensuring such a race condition never happens. |
| private static final int DELAY_MILLIS_TO_REEVALUATE_IME_SWITCH_ICON = 500; // 500ms |
| |
| InputMethodManager mImm; |
| private TextView mPasswordEntry; |
| private TextViewInputDisabler mPasswordEntryDisabler; |
| private View mSwitchImeButton; |
| |
| private Interpolator mLinearOutSlowInInterpolator; |
| private Interpolator mFastOutLinearInInterpolator; |
| |
| public KeyguardPasswordView(Context context) { |
| this(context, null); |
| } |
| |
| public KeyguardPasswordView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mShowImeAtScreenOn = context.getResources(). |
| getBoolean(R.bool.kg_show_ime_at_screen_on); |
| mDisappearYTranslation = getResources().getDimensionPixelSize( |
| R.dimen.disappear_y_translation); |
| mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator( |
| context, android.R.interpolator.linear_out_slow_in); |
| mFastOutLinearInInterpolator = AnimationUtils.loadInterpolator( |
| context, android.R.interpolator.fast_out_linear_in); |
| } |
| |
| @Override |
| protected void resetState() { |
| mPasswordEntry.setTextOperationUser(UserHandle.of(KeyguardUpdateMonitor.getCurrentUser())); |
| if (mSecurityMessageDisplay != null) { |
| mSecurityMessageDisplay.setMessage(""); |
| } |
| final boolean wasDisabled = mPasswordEntry.isEnabled(); |
| // Don't set enabled password entry & showSoftInput when PasswordEntry is invisible or in |
| // pausing stage. |
| if (!mResumed || !mPasswordEntry.isVisibleToUser()) { |
| return; |
| } |
| setPasswordEntryEnabled(true); |
| setPasswordEntryInputEnabled(true); |
| if (wasDisabled) { |
| mImm.showSoftInput(mPasswordEntry, InputMethodManager.SHOW_IMPLICIT); |
| } |
| } |
| |
| @Override |
| protected int getPasswordTextViewId() { |
| return R.id.passwordEntry; |
| } |
| |
| @Override |
| public boolean needsInput() { |
| return true; |
| } |
| |
| @Override |
| public void onResume(final int reason) { |
| super.onResume(reason); |
| |
| // Wait a bit to focus the field so the focusable flag on the window is already set then. |
| post(new Runnable() { |
| @Override |
| public void run() { |
| if (isShown() && mPasswordEntry.isEnabled()) { |
| mPasswordEntry.requestFocus(); |
| if (reason != KeyguardSecurityView.SCREEN_ON || mShowImeAtScreenOn) { |
| mImm.showSoftInput(mPasswordEntry, InputMethodManager.SHOW_IMPLICIT); |
| } |
| } |
| } |
| }); |
| } |
| |
| @Override |
| protected int getPromptReasonStringRes(int reason) { |
| switch (reason) { |
| case PROMPT_REASON_RESTART: |
| return R.string.kg_prompt_reason_restart_password; |
| case PROMPT_REASON_TIMEOUT: |
| return R.string.kg_prompt_reason_timeout_password; |
| case PROMPT_REASON_DEVICE_ADMIN: |
| return R.string.kg_prompt_reason_device_admin; |
| case PROMPT_REASON_USER_REQUEST: |
| return R.string.kg_prompt_reason_user_request; |
| case PROMPT_REASON_NONE: |
| return 0; |
| default: |
| return R.string.kg_prompt_reason_timeout_password; |
| } |
| } |
| |
| @Override |
| public void onPause() { |
| super.onPause(); |
| mImm.hideSoftInputFromWindow(getWindowToken(), 0); |
| } |
| |
| private void updateSwitchImeButton() { |
| // If there's more than one IME, enable the IME switcher button |
| final boolean wasVisible = mSwitchImeButton.getVisibility() == View.VISIBLE; |
| final boolean shouldBeVisible = hasMultipleEnabledIMEsOrSubtypes(mImm, false); |
| if (wasVisible != shouldBeVisible) { |
| mSwitchImeButton.setVisibility(shouldBeVisible ? View.VISIBLE : View.GONE); |
| } |
| |
| // TODO: Check if we still need this hack. |
| // If no icon is visible, reset the start margin on the password field so the text is |
| // still centered. |
| if (mSwitchImeButton.getVisibility() != View.VISIBLE) { |
| android.view.ViewGroup.LayoutParams params = mPasswordEntry.getLayoutParams(); |
| if (params instanceof MarginLayoutParams) { |
| final MarginLayoutParams mlp = (MarginLayoutParams) params; |
| mlp.setMarginStart(0); |
| mPasswordEntry.setLayoutParams(params); |
| } |
| } |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| |
| mImm = (InputMethodManager) getContext().getSystemService( |
| Context.INPUT_METHOD_SERVICE); |
| |
| mPasswordEntry = findViewById(getPasswordTextViewId()); |
| mPasswordEntry.setTextOperationUser(UserHandle.of(KeyguardUpdateMonitor.getCurrentUser())); |
| mPasswordEntryDisabler = new TextViewInputDisabler(mPasswordEntry); |
| mPasswordEntry.setKeyListener(TextKeyListener.getInstance()); |
| mPasswordEntry.setInputType(InputType.TYPE_CLASS_TEXT |
| | InputType.TYPE_TEXT_VARIATION_PASSWORD); |
| mPasswordEntry.setOnEditorActionListener(this); |
| mPasswordEntry.addTextChangedListener(this); |
| |
| // Poke the wakelock any time the text is selected or modified |
| mPasswordEntry.setOnClickListener(new OnClickListener() { |
| @Override |
| public void onClick(View v) { |
| mCallback.userActivity(); |
| } |
| }); |
| |
| // Set selected property on so the view can send accessibility events. |
| mPasswordEntry.setSelected(true); |
| |
| mSwitchImeButton = findViewById(R.id.switch_ime_button); |
| mSwitchImeButton.setOnClickListener(new OnClickListener() { |
| @Override |
| public void onClick(View v) { |
| mCallback.userActivity(); // Leave the screen on a bit longer |
| // Do not show auxiliary subtypes in password lock screen. |
| mImm.showInputMethodPickerFromSystem(false /* showAuxiliarySubtypes */, |
| getContext().getDisplayId()); |
| } |
| }); |
| |
| View cancelBtn = findViewById(R.id.cancel_button); |
| if (cancelBtn != null) { |
| cancelBtn.setOnClickListener(view -> { |
| mCallback.reset(); |
| mCallback.onCancelClicked(); |
| }); |
| } |
| |
| // If there's more than one IME, enable the IME switcher button |
| updateSwitchImeButton(); |
| |
| // When we the current user is switching, InputMethodManagerService sometimes has not |
| // switched internal state yet here. As a quick workaround, we check the keyboard state |
| // again. |
| // TODO: Remove this workaround by ensuring such a race condition never happens. |
| postDelayed(new Runnable() { |
| @Override |
| public void run() { |
| updateSwitchImeButton(); |
| } |
| }, DELAY_MILLIS_TO_REEVALUATE_IME_SWITCH_ICON); |
| } |
| |
| @Override |
| protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { |
| // send focus to the password field |
| return mPasswordEntry.requestFocus(direction, previouslyFocusedRect); |
| } |
| |
| @Override |
| protected void resetPasswordText(boolean animate, boolean announce) { |
| mPasswordEntry.setText(""); |
| } |
| |
| @Override |
| protected byte[] getPasswordText() { |
| return charSequenceToByteArray(mPasswordEntry.getText()); |
| } |
| |
| @Override |
| protected void setPasswordEntryEnabled(boolean enabled) { |
| mPasswordEntry.setEnabled(enabled); |
| } |
| |
| @Override |
| protected void setPasswordEntryInputEnabled(boolean enabled) { |
| mPasswordEntryDisabler.setInputEnabled(enabled); |
| } |
| |
| /** |
| * Method adapted from com.android.inputmethod.latin.Utils |
| * |
| * @param imm The input method manager |
| * @param shouldIncludeAuxiliarySubtypes |
| * @return true if we have multiple IMEs to choose from |
| */ |
| private boolean hasMultipleEnabledIMEsOrSubtypes(InputMethodManager imm, |
| final boolean shouldIncludeAuxiliarySubtypes) { |
| final List<InputMethodInfo> enabledImis = |
| imm.getEnabledInputMethodListAsUser(KeyguardUpdateMonitor.getCurrentUser()); |
| |
| // Number of the filtered IMEs |
| int filteredImisCount = 0; |
| |
| for (InputMethodInfo imi : enabledImis) { |
| // We can return true immediately after we find two or more filtered IMEs. |
| if (filteredImisCount > 1) return true; |
| final List<InputMethodSubtype> subtypes = |
| imm.getEnabledInputMethodSubtypeList(imi, true); |
| // IMEs that have no subtypes should be counted. |
| if (subtypes.isEmpty()) { |
| ++filteredImisCount; |
| continue; |
| } |
| |
| int auxCount = 0; |
| for (InputMethodSubtype subtype : subtypes) { |
| if (subtype.isAuxiliary()) { |
| ++auxCount; |
| } |
| } |
| final int nonAuxCount = subtypes.size() - auxCount; |
| |
| // IMEs that have one or more non-auxiliary subtypes should be counted. |
| // If shouldIncludeAuxiliarySubtypes is true, IMEs that have two or more auxiliary |
| // subtypes should be counted as well. |
| if (nonAuxCount > 0 || (shouldIncludeAuxiliarySubtypes && auxCount > 1)) { |
| ++filteredImisCount; |
| continue; |
| } |
| } |
| |
| return filteredImisCount > 1 |
| // imm.getEnabledInputMethodSubtypeList(null, false) will return the current IME's enabled |
| // input method subtype (The current IME should be LatinIME.) |
| || imm.getEnabledInputMethodSubtypeList(null, false).size() > 1; |
| } |
| |
| @Override |
| public void showUsabilityHint() { |
| } |
| |
| @Override |
| public int getWrongPasswordStringId() { |
| return R.string.kg_wrong_password; |
| } |
| |
| @Override |
| public void startAppearAnimation() { |
| setAlpha(0f); |
| setTranslationY(0f); |
| animate() |
| .alpha(1) |
| .withLayer() |
| .setDuration(300) |
| .setInterpolator(mLinearOutSlowInInterpolator); |
| } |
| |
| @Override |
| public boolean startDisappearAnimation(Runnable finishRunnable) { |
| animate() |
| .alpha(0f) |
| .translationY(mDisappearYTranslation) |
| .setInterpolator(mFastOutLinearInInterpolator) |
| .setDuration(100) |
| .withEndAction(finishRunnable); |
| return true; |
| } |
| |
| @Override |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) { |
| if (mCallback != null) { |
| mCallback.userActivity(); |
| } |
| } |
| |
| @Override |
| public void onTextChanged(CharSequence s, int start, int before, int count) { |
| } |
| |
| @Override |
| public void afterTextChanged(Editable s) { |
| // Poor man's user edit detection, assuming empty text is programmatic and everything else |
| // is from the user. |
| if (!TextUtils.isEmpty(s)) { |
| onUserInput(); |
| } |
| } |
| |
| @Override |
| public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { |
| // Check if this was the result of hitting the enter key |
| final boolean isSoftImeEvent = event == null |
| && (actionId == EditorInfo.IME_NULL |
| || actionId == EditorInfo.IME_ACTION_DONE |
| || actionId == EditorInfo.IME_ACTION_NEXT); |
| final boolean isKeyboardEnterKey = event != null |
| && KeyEvent.isConfirmKey(event.getKeyCode()) |
| && event.getAction() == KeyEvent.ACTION_DOWN; |
| if (isSoftImeEvent || isKeyboardEnterKey) { |
| verifyPasswordAndUnlock(); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public CharSequence getTitle() { |
| return getContext().getString( |
| com.android.internal.R.string.keyguard_accessibility_password_unlock); |
| } |
| |
| /* |
| * This method avoids creating a new string when getting a byte array from EditView#getText(). |
| */ |
| private static byte[] charSequenceToByteArray(CharSequence chars) { |
| if (chars == null) { |
| return null; |
| } |
| byte[] bytes = new byte[chars.length()]; |
| for (int i = 0; i < chars.length(); i++) { |
| bytes[i] = (byte) chars.charAt(i); |
| } |
| return bytes; |
| } |
| } |