| /* |
| * Copyright (C) 2010 Google Inc. |
| * |
| * 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.internal.widget; |
| |
| import java.util.Locale; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.content.res.XmlResourceParser; |
| import android.graphics.drawable.Drawable; |
| import android.inputmethodservice.Keyboard; |
| import android.inputmethodservice.KeyboardView; |
| import com.android.internal.R; |
| |
| /** |
| * A basic, embed-able keyboard designed for password entry. Allows entry of all Latin-1 characters. |
| * |
| * It has two modes: alpha and numeric. In alpha mode, it allows all Latin-1 characters and enables |
| * an additional keyboard with symbols. In numeric mode, it shows a 12-key DTMF dialer-like |
| * keypad with alpha characters hints. |
| */ |
| public class PasswordEntryKeyboard extends Keyboard { |
| private static final int SHIFT_OFF = 0; |
| private static final int SHIFT_ON = 1; |
| private static final int SHIFT_LOCKED = 2; |
| public static final int KEYCODE_SPACE = ' '; |
| |
| private Drawable mShiftIcon; |
| private Drawable mShiftLockIcon; |
| |
| // These two arrays must be the same length |
| private Drawable[] mOldShiftIcons = { null, null }; |
| private Key[] mShiftKeys = { null, null }; |
| |
| private Key mEnterKey; |
| private Key mF1Key; |
| private Key mSpaceKey; |
| private int mShiftState = SHIFT_OFF; |
| |
| static int sSpacebarVerticalCorrection; |
| |
| public PasswordEntryKeyboard(Context context, int xmlLayoutResId) { |
| this(context, xmlLayoutResId, 0); |
| } |
| |
| public PasswordEntryKeyboard(Context context, int xmlLayoutResId, int width, int height) { |
| this(context, xmlLayoutResId, 0, width, height); |
| } |
| |
| public PasswordEntryKeyboard(Context context, int xmlLayoutResId, int mode) { |
| super(context, xmlLayoutResId, mode); |
| init(context); |
| } |
| |
| public PasswordEntryKeyboard(Context context, int xmlLayoutResId, int mode, |
| int width, int height) { |
| super(context, xmlLayoutResId, mode, width, height); |
| init(context); |
| } |
| |
| private void init(Context context) { |
| final Resources res = context.getResources(); |
| mShiftIcon = res.getDrawable(R.drawable.sym_keyboard_shift); |
| mShiftLockIcon = res.getDrawable(R.drawable.sym_keyboard_shift_locked); |
| sSpacebarVerticalCorrection = res.getDimensionPixelOffset( |
| R.dimen.password_keyboard_spacebar_vertical_correction); |
| } |
| |
| public PasswordEntryKeyboard(Context context, int layoutTemplateResId, |
| CharSequence characters, int columns, int horizontalPadding) { |
| super(context, layoutTemplateResId, characters, columns, horizontalPadding); |
| } |
| |
| @Override |
| protected Key createKeyFromXml(Resources res, Row parent, int x, int y, |
| XmlResourceParser parser) { |
| LatinKey key = new LatinKey(res, parent, x, y, parser); |
| final int code = key.codes[0]; |
| if (code >=0 && code != '\n' && (code < 32 || code > 127)) { |
| // Log.w(TAG, "Key code for " + key.label + " is not latin-1"); |
| key.label = " "; |
| key.setEnabled(false); |
| } |
| switch (key.codes[0]) { |
| case 10: |
| mEnterKey = key; |
| break; |
| case PasswordEntryKeyboardView.KEYCODE_F1: |
| mF1Key = key; |
| break; |
| case 32: |
| mSpaceKey = key; |
| break; |
| } |
| return key; |
| } |
| |
| /** |
| * Allows enter key resources to be overridden |
| * @param res resources to grab given items from |
| * @param previewId preview drawable shown on enter key |
| * @param iconId normal drawable shown on enter key |
| * @param labelId string shown on enter key |
| */ |
| void setEnterKeyResources(Resources res, int previewId, int iconId, int labelId) { |
| if (mEnterKey != null) { |
| // Reset some of the rarely used attributes. |
| mEnterKey.popupCharacters = null; |
| mEnterKey.popupResId = 0; |
| mEnterKey.text = null; |
| |
| mEnterKey.iconPreview = res.getDrawable(previewId); |
| mEnterKey.icon = res.getDrawable(iconId); |
| mEnterKey.label = res.getText(labelId); |
| |
| // Set the initial size of the preview icon |
| if (mEnterKey.iconPreview != null) { |
| mEnterKey.iconPreview.setBounds(0, 0, |
| mEnterKey.iconPreview.getIntrinsicWidth(), |
| mEnterKey.iconPreview.getIntrinsicHeight()); |
| } |
| } |
| } |
| |
| /** |
| * Allows shiftlock to be turned on. See {@link #setShiftLocked(boolean)} |
| * |
| */ |
| void enableShiftLock() { |
| int i = 0; |
| for (int index : getShiftKeyIndices()) { |
| if (index >= 0 && i < mShiftKeys.length) { |
| mShiftKeys[i] = getKeys().get(index); |
| if (mShiftKeys[i] instanceof LatinKey) { |
| ((LatinKey)mShiftKeys[i]).enableShiftLock(); |
| } |
| mOldShiftIcons[i] = mShiftKeys[i].icon; |
| i++; |
| } |
| } |
| } |
| |
| /** |
| * Turn on shift lock. This turns on the LED for this key, if it has one. |
| * It should be followed by a call to {@link KeyboardView#invalidateKey(int)} |
| * or {@link KeyboardView#invalidateAllKeys()} |
| * |
| * @param shiftLocked |
| */ |
| void setShiftLocked(boolean shiftLocked) { |
| for (Key shiftKey : mShiftKeys) { |
| if (shiftKey != null) { |
| shiftKey.on = shiftLocked; |
| shiftKey.icon = mShiftLockIcon; |
| } |
| } |
| mShiftState = shiftLocked ? SHIFT_LOCKED : SHIFT_ON; |
| } |
| |
| /** |
| * Turn on shift mode. Sets shift mode and turns on icon for shift key. |
| * It should be followed by a call to {@link KeyboardView#invalidateKey(int)} |
| * or {@link KeyboardView#invalidateAllKeys()} |
| * |
| * @param shiftLocked |
| */ |
| @Override |
| public boolean setShifted(boolean shiftState) { |
| boolean shiftChanged = false; |
| if (shiftState == false) { |
| shiftChanged = mShiftState != SHIFT_OFF; |
| mShiftState = SHIFT_OFF; |
| } else if (mShiftState == SHIFT_OFF) { |
| shiftChanged = mShiftState == SHIFT_OFF; |
| mShiftState = SHIFT_ON; |
| } |
| for (int i = 0; i < mShiftKeys.length; i++) { |
| if (mShiftKeys[i] != null) { |
| if (shiftState == false) { |
| mShiftKeys[i].on = false; |
| mShiftKeys[i].icon = mOldShiftIcons[i]; |
| } else if (mShiftState == SHIFT_OFF) { |
| mShiftKeys[i].on = false; |
| mShiftKeys[i].icon = mShiftIcon; |
| } |
| } else { |
| // return super.setShifted(shiftState); |
| } |
| } |
| return shiftChanged; |
| } |
| |
| /** |
| * Whether or not keyboard is shifted. |
| * @return true if keyboard state is shifted. |
| */ |
| @Override |
| public boolean isShifted() { |
| if (mShiftKeys[0] != null) { |
| return mShiftState != SHIFT_OFF; |
| } else { |
| return super.isShifted(); |
| } |
| } |
| |
| static class LatinKey extends Keyboard.Key { |
| private boolean mShiftLockEnabled; |
| private boolean mEnabled = true; |
| |
| public LatinKey(Resources res, Keyboard.Row parent, int x, int y, |
| XmlResourceParser parser) { |
| super(res, parent, x, y, parser); |
| if (popupCharacters != null && popupCharacters.length() == 0) { |
| // If there is a keyboard with no keys specified in popupCharacters |
| popupResId = 0; |
| } |
| } |
| |
| void setEnabled(boolean enabled) { |
| mEnabled = enabled; |
| } |
| |
| void enableShiftLock() { |
| mShiftLockEnabled = true; |
| } |
| |
| @Override |
| public void onReleased(boolean inside) { |
| if (!mShiftLockEnabled) { |
| super.onReleased(inside); |
| } else { |
| pressed = !pressed; |
| } |
| } |
| |
| /** |
| * Overriding this method so that we can reduce the target area for certain keys. |
| */ |
| @Override |
| public boolean isInside(int x, int y) { |
| if (!mEnabled) { |
| return false; |
| } |
| final int code = codes[0]; |
| if (code == KEYCODE_SHIFT || code == KEYCODE_DELETE) { |
| y -= height / 10; |
| if (code == KEYCODE_SHIFT) x += width / 6; |
| if (code == KEYCODE_DELETE) x -= width / 6; |
| } else if (code == KEYCODE_SPACE) { |
| y += PasswordEntryKeyboard.sSpacebarVerticalCorrection; |
| } |
| return super.isInside(x, y); |
| } |
| } |
| } |