1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.keyguard;
18
19import android.content.Context;
20import android.content.res.TypedArray;
21import android.graphics.drawable.Drawable;
22import android.os.Debug;
23import android.os.PowerManager;
24import android.os.SystemClock;
25import android.util.AttributeSet;
26import android.view.HapticFeedbackConstants;
27import android.view.KeyEvent;
28import android.view.LayoutInflater;
29import android.view.View;
30import android.view.ViewGroup;
31import android.view.accessibility.AccessibilityEvent;
32import android.widget.TextView;
33
34import com.android.internal.widget.LockPatternUtils;
35
36public class NumPadKey extends ViewGroup {
37    // list of "ABC", etc per digit, starting with '0'
38    static String sKlondike[];
39
40    private int mDigit = -1;
41    private int mTextViewResId;
42    private PasswordTextView mTextView;
43    private TextView mDigitText;
44    private TextView mKlondikeText;
45    private boolean mEnableHaptics;
46    private PowerManager mPM;
47
48    private View.OnClickListener mListener = new View.OnClickListener() {
49        @Override
50        public void onClick(View thisView) {
51            if (mTextView == null && mTextViewResId > 0) {
52                final View v = NumPadKey.this.getRootView().findViewById(mTextViewResId);
53                if (v != null && v instanceof PasswordTextView) {
54                    mTextView = (PasswordTextView) v;
55                }
56            }
57            if (mTextView != null && mTextView.isEnabled()) {
58                mTextView.append(Character.forDigit(mDigit, 10));
59            }
60            userActivity();
61            doHapticKeyClick();
62        }
63    };
64
65    public void userActivity() {
66        mPM.userActivity(SystemClock.uptimeMillis(), false);
67    }
68
69    public NumPadKey(Context context) {
70        this(context, null);
71    }
72
73    public NumPadKey(Context context, AttributeSet attrs) {
74        this(context, attrs, 0);
75    }
76
77    public NumPadKey(Context context, AttributeSet attrs, int defStyle) {
78        super(context, attrs, defStyle);
79        setFocusable(true);
80
81        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.NumPadKey);
82
83        try {
84            mDigit = a.getInt(R.styleable.NumPadKey_digit, mDigit);
85            mTextViewResId = a.getResourceId(R.styleable.NumPadKey_textView, 0);
86        } finally {
87            a.recycle();
88        }
89
90        setOnClickListener(mListener);
91        setOnHoverListener(new LiftToActivateListener(context));
92        setAccessibilityDelegate(new ObscureSpeechDelegate(context));
93
94        mEnableHaptics = new LockPatternUtils(context).isTactileFeedbackEnabled();
95
96        mPM = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
97        LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(
98                Context.LAYOUT_INFLATER_SERVICE);
99        inflater.inflate(R.layout.keyguard_num_pad_key, this, true);
100
101        mDigitText = (TextView) findViewById(R.id.digit_text);
102        mDigitText.setText(Integer.toString(mDigit));
103        mKlondikeText = (TextView) findViewById(R.id.klondike_text);
104
105        if (mDigit >= 0) {
106            if (sKlondike == null) {
107                sKlondike = getResources().getStringArray(R.array.lockscreen_num_pad_klondike);
108            }
109            if (sKlondike != null && sKlondike.length > mDigit) {
110                String klondike = sKlondike[mDigit];
111                final int len = klondike.length();
112                if (len > 0) {
113                    mKlondikeText.setText(klondike);
114                } else {
115                    mKlondikeText.setVisibility(View.INVISIBLE);
116                }
117            }
118        }
119
120        setBackground(mContext.getDrawable(R.drawable.ripple_drawable));
121        setContentDescription(mDigitText.getText().toString());
122    }
123
124    @Override
125    public void onDetachedFromWindow() {
126        super.onDetachedFromWindow();
127
128        // Reset the "announced headset" flag when detached.
129        ObscureSpeechDelegate.sAnnouncedHeadset = false;
130    }
131
132    @Override
133    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
134        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
135        measureChildren(widthMeasureSpec, heightMeasureSpec);
136    }
137
138    @Override
139    protected void onLayout(boolean changed, int l, int t, int r, int b) {
140        int digitHeight = mDigitText.getMeasuredHeight();
141        int klondikeHeight = mKlondikeText.getMeasuredHeight();
142        int totalHeight = digitHeight + klondikeHeight;
143        int top = getHeight() / 2 - totalHeight / 2;
144        int centerX = getWidth() / 2;
145        int left = centerX - mDigitText.getMeasuredWidth() / 2;
146        int bottom = top + digitHeight;
147        mDigitText.layout(left, top, left + mDigitText.getMeasuredWidth(), bottom);
148        top = (int) (bottom - klondikeHeight * 0.35f);
149        bottom = top + klondikeHeight;
150
151        left = centerX - mKlondikeText.getMeasuredWidth() / 2;
152        mKlondikeText.layout(left, top, left + mKlondikeText.getMeasuredWidth(), bottom);
153    }
154
155    @Override
156    public boolean hasOverlappingRendering() {
157        return false;
158    }
159
160    // Cause a VIRTUAL_KEY vibration
161    public void doHapticKeyClick() {
162        if (mEnableHaptics) {
163            performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY,
164                    HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING
165                    | HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
166        }
167    }
168}
169