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org.holoeverywhere.widget.NumberPicker Maven / Gradle / Ivy
package org.holoeverywhere.widget;
import java.util.ArrayList;
import org.holoeverywhere.LayoutInflater;
import org.holoeverywhere.R;
import org.holoeverywhere.internal.NumberPickerEditText;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.drawable.Drawable;
import android.os.Build.VERSION;
import android.text.InputFilter;
import android.text.InputType;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.method.NumberKeyListener;
import android.util.AttributeSet;
import android.util.SparseArray;
import android.util.TypedValue;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.animation.DecelerateInterpolator;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.ImageButton;
public class NumberPicker extends LinearLayout {
class BeginSoftInputOnLongPressCommand implements Runnable {
@Override
public void run() {
showSoftInput();
mIngonreMoveEvents = true;
}
}
class ChangeCurrentByOneFromLongPressCommand implements Runnable {
private boolean mIncrement;
@Override
public void run() {
changeValueByOne(mIncrement);
postDelayed(this, mLongPressUpdateInterval);
}
private void setStep(boolean increment) {
mIncrement = increment;
}
}
public interface Formatter {
public String format(int value);
}
class InputTextFilter extends NumberKeyListener {
@Override
public CharSequence filter(CharSequence source, int start, int end,
Spanned dest, int dstart, int dend) {
if (mDisplayedValues == null) {
CharSequence filtered = super.filter(source, start, end, dest,
dstart, dend);
if (filtered == null) {
filtered = source.subSequence(start, end);
}
String result = String.valueOf(dest.subSequence(0, dstart))
+ filtered + dest.subSequence(dend, dest.length());
if ("".equals(result)) {
return result;
}
int val = getSelectedPos(result);
if (val > mMaxValue) {
return "";
} else {
return filtered;
}
} else {
CharSequence filtered = String.valueOf(source.subSequence(
start, end));
if (TextUtils.isEmpty(filtered)) {
return "";
}
String result = String.valueOf(dest.subSequence(0, dstart))
+ filtered + dest.subSequence(dend, dest.length());
String str = String.valueOf(result).toLowerCase();
for (String val : mDisplayedValues) {
String valLowerCase = val.toLowerCase();
if (valLowerCase.startsWith(str)) {
postSetSelectionCommand(result.length(), val.length());
return val.subSequence(dstart, val.length());
}
}
return "";
}
}
@Override
protected char[] getAcceptedChars() {
return NumberPicker.DIGIT_CHARACTERS;
}
@Override
public int getInputType() {
return InputType.TYPE_CLASS_TEXT;
}
}
public interface OnScrollListener {
public static int SCROLL_STATE_FLING = 2;
public static int SCROLL_STATE_IDLE = 0;
public static int SCROLL_STATE_TOUCH_SCROLL = 1;
public void onScrollStateChange(NumberPicker view, int scrollState);
}
public interface OnValueChangeListener {
void onValueChange(NumberPicker picker, int oldVal, int newVal);
}
class PressedStateHelper implements Runnable {
public static final int BUTTON_DECREMENT = 2;
public static final int BUTTON_INCREMENT = 1;
private int mManagedButton;
private int mMode;
private final int MODE_PRESS = 1;
private final int MODE_TAPPED = 2;
public void buttonPressDelayed(int button) {
cancel();
mMode = MODE_PRESS;
mManagedButton = button;
postDelayed(this, ViewConfiguration.getTapTimeout());
}
public void buttonTapped(int button) {
cancel();
mMode = MODE_TAPPED;
mManagedButton = button;
post(this);
}
public void cancel() {
mMode = 0;
mManagedButton = 0;
removeCallbacks(this);
if (mIncrementVirtualButtonPressed) {
mIncrementVirtualButtonPressed = false;
invalidate(0, mBottomSelectionDividerBottom, getRight(),
getBottom());
}
mDecrementVirtualButtonPressed = false;
if (mDecrementVirtualButtonPressed) {
invalidate(0, 0, getRight(), mTopSelectionDividerTop);
}
}
@Override
public void run() {
switch (mMode) {
case MODE_PRESS: {
switch (mManagedButton) {
case BUTTON_INCREMENT: {
mIncrementVirtualButtonPressed = true;
invalidate(0, mBottomSelectionDividerBottom, getRight(),
getBottom());
}
break;
case BUTTON_DECREMENT: {
mDecrementVirtualButtonPressed = true;
invalidate(0, 0, getRight(), mTopSelectionDividerTop);
}
}
}
break;
case MODE_TAPPED: {
switch (mManagedButton) {
case BUTTON_INCREMENT: {
if (!mIncrementVirtualButtonPressed) {
postDelayed(this,
ViewConfiguration.getPressedStateDuration());
}
mIncrementVirtualButtonPressed ^= true;
invalidate(0, mBottomSelectionDividerBottom, getRight(),
getBottom());
}
break;
case BUTTON_DECREMENT: {
if (!mDecrementVirtualButtonPressed) {
postDelayed(this,
ViewConfiguration.getPressedStateDuration());
}
mDecrementVirtualButtonPressed ^= true;
invalidate(0, 0, getRight(), mTopSelectionDividerTop);
}
}
}
break;
}
}
}
class SetSelectionCommand implements Runnable {
private int mSelectionEnd;
private int mSelectionStart;
@Override
public void run() {
mInputText.setSelection(mSelectionStart, mSelectionEnd);
}
}
private static final int DEFAULT_LAYOUT_RESOURCE_ID = R.layout.number_picker_with_selector_wheel;
private static final long DEFAULT_LONG_PRESS_UPDATE_INTERVAL = 300;
private static final char[] DIGIT_CHARACTERS = new char[] {
'0', '1', '2',
'3', '4', '5', '6', '7', '8', '9'
};
public static final int FOCUSABLES_ACCESSIBILITY = 0x00000002;
private static final int SELECTOR_ADJUSTMENT_DURATION_MILLIS = 800;
private static final int SELECTOR_MAX_FLING_VELOCITY_ADJUSTMENT = 8;
private static final int SELECTOR_WHEEL_ITEM_COUNT = 3;
private static final int SELECTOR_WHELL_MIDDLE_ITEM_INDEX = NumberPicker.SELECTOR_WHEEL_ITEM_COUNT / 2;
private static final int SIZE_UNSPECIFIED = -1;
private static final int SNAP_SCROLL_DURATION = 300;
private static final float TOP_AND_BOTTOM_FADING_EDGE_STRENGTH = 0.9f;
public static final NumberPicker.Formatter TWO_DIGIT_FORMATTER = new NumberPicker.Formatter() {
final Object[] mArgs = new Object[1];
final StringBuilder mBuilder = new StringBuilder();
final java.util.Formatter mFmt = new java.util.Formatter(mBuilder,
java.util.Locale.US);
@Override
public String format(int value) {
mArgs[0] = value;
mBuilder.delete(0, mBuilder.length());
mFmt.format("%02d", mArgs);
return mFmt.toString();
}
};
private static final int UNSCALED_DEFAULT_SELECTION_DIVIDER_HEIGHT = 2;
private static final int UNSCALED_DEFAULT_SELECTION_DIVIDERS_DISTANCE = 48;
private final Scroller mAdjustScroller;
private BeginSoftInputOnLongPressCommand mBeginSoftInputOnLongPressCommand;
private int mBottomSelectionDividerBottom;
private ChangeCurrentByOneFromLongPressCommand mChangeCurrentByOneFromLongPressCommand;
private final boolean mComputeMaxWidth;
private int mCurrentScrollOffset;
private final ImageButton mDecrementButton;
private boolean mDecrementVirtualButtonPressed;
private String[] mDisplayedValues;
private final Scroller mFlingScroller;
private Formatter mFormatter;
private final boolean mHasSelectorWheel;
private final ImageButton mIncrementButton;
private boolean mIncrementVirtualButtonPressed;
private boolean mIngonreMoveEvents;
private int mInitialScrollOffset = Integer.MIN_VALUE;
private final NumberPickerEditText mInputText;
private long mLastDownEventTime;
private float mLastDownEventY;
private float mLastDownOrMoveEventY;
private long mLongPressUpdateInterval = NumberPicker.DEFAULT_LONG_PRESS_UPDATE_INTERVAL;
private final int mMaxHeight;
private int mMaximumFlingVelocity;
private int mMaxValue;
private int mMaxWidth;
private final int mMinHeight;
private int mMinimumFlingVelocity;
private int mMinValue;
private final int mMinWidth;
private OnScrollListener mOnScrollListener;
private OnValueChangeListener mOnValueChangeListener;
private final PressedStateHelper mPressedStateHelper;
private int mPreviousScrollerY;
private int mScrollState = OnScrollListener.SCROLL_STATE_IDLE;
private final Drawable mSelectionDivider;
private final int mSelectionDividerHeight;
private final int mSelectionDividersDistance;
private int mSelectorElementHeight;
private final SparseArray mSelectorIndexToStringCache = new SparseArray();
private final int[] mSelectorIndices = new int[NumberPicker.SELECTOR_WHEEL_ITEM_COUNT];
private int mSelectorTextGapHeight;
private final Paint mSelectorWheelPaint;
private SetSelectionCommand mSetSelectionCommand;
private boolean mShowSoftInputOnTap;
private final int mSolidColor;
private final int mTextSize;
private int mTopSelectionDividerTop;
private int mTouchSlop;
private int mValue;
private VelocityTracker mVelocityTracker;
private final Drawable mVirtualButtonPressedDrawable;
private boolean mWrapSelectorWheel;
public NumberPicker(Context context) {
this(context, null);
}
public NumberPicker(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.numberPickerStyle);
}
@SuppressLint("NewApi")
public NumberPicker(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
TypedArray attributesArray = context.obtainStyledAttributes(attrs,
R.styleable.NumberPicker, defStyle, R.style.Holo_NumberPicker);
final int layoutResId = attributesArray.getResourceId(
R.styleable.NumberPicker_android_layout,
NumberPicker.DEFAULT_LAYOUT_RESOURCE_ID);
mHasSelectorWheel = layoutResId == NumberPicker.DEFAULT_LAYOUT_RESOURCE_ID;
mSolidColor = attributesArray.getColor(
R.styleable.NumberPicker_solidColor, 0);
mSelectionDivider = attributesArray
.getDrawable(R.styleable.NumberPicker_selectionDivider);
final int defSelectionDividerHeight = (int) TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
NumberPicker.UNSCALED_DEFAULT_SELECTION_DIVIDER_HEIGHT,
getResources().getDisplayMetrics());
mSelectionDividerHeight = attributesArray.getDimensionPixelSize(
R.styleable.NumberPicker_selectionDividerHeight,
defSelectionDividerHeight);
final int defSelectionDividerDistance = (int) TypedValue
.applyDimension(
TypedValue.COMPLEX_UNIT_DIP,
NumberPicker.UNSCALED_DEFAULT_SELECTION_DIVIDERS_DISTANCE,
getResources().getDisplayMetrics());
mSelectionDividersDistance = attributesArray.getDimensionPixelSize(
R.styleable.NumberPicker_selectionDividersDistance,
defSelectionDividerDistance);
mMinHeight = attributesArray.getDimensionPixelSize(
R.styleable.NumberPicker_android_minHeight,
NumberPicker.SIZE_UNSPECIFIED);
mMaxHeight = attributesArray.getDimensionPixelSize(
R.styleable.NumberPicker_android_maxHeight,
NumberPicker.SIZE_UNSPECIFIED);
if (mMinHeight != NumberPicker.SIZE_UNSPECIFIED
&& mMaxHeight != NumberPicker.SIZE_UNSPECIFIED
&& mMinHeight > mMaxHeight) {
throw new IllegalArgumentException("minHeight > maxHeight");
}
mMinWidth = attributesArray.getDimensionPixelSize(
R.styleable.NumberPicker_android_minWidth,
NumberPicker.SIZE_UNSPECIFIED);
mMaxWidth = attributesArray.getDimensionPixelSize(
R.styleable.NumberPicker_android_maxWidth,
NumberPicker.SIZE_UNSPECIFIED);
if (mMinWidth != NumberPicker.SIZE_UNSPECIFIED
&& mMaxWidth != NumberPicker.SIZE_UNSPECIFIED
&& mMinWidth > mMaxWidth) {
throw new IllegalArgumentException("minWidth > maxWidth");
}
mComputeMaxWidth = mMaxWidth == NumberPicker.SIZE_UNSPECIFIED;
mVirtualButtonPressedDrawable = attributesArray
.getDrawable(R.styleable.NumberPicker_virtualButtonPressedDrawable);
attributesArray.recycle();
mPressedStateHelper = new PressedStateHelper();
setWillNotDraw(!mHasSelectorWheel);
LayoutInflater.inflate(context, layoutResId, this, true);
OnClickListener onClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
hideSoftInput();
mInputText.clearFocus();
if (v.getId() == R.id.increment) {
changeValueByOne(true);
} else {
changeValueByOne(false);
}
}
};
OnLongClickListener onLongClickListener = new OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
hideSoftInput();
mInputText.clearFocus();
if (v.getId() == R.id.increment) {
postChangeCurrentByOneFromLongPress(true, 0);
} else {
postChangeCurrentByOneFromLongPress(false, 0);
}
return true;
}
};
if (!mHasSelectorWheel) {
mIncrementButton = (ImageButton) findViewById(R.id.increment);
if (mIncrementButton != null) {
mIncrementButton.setOnClickListener(onClickListener);
mIncrementButton.setOnLongClickListener(onLongClickListener);
}
} else {
mIncrementButton = null;
}
if (!mHasSelectorWheel) {
mDecrementButton = (ImageButton) findViewById(R.id.decrement);
if (mDecrementButton != null) {
mDecrementButton.setOnClickListener(onClickListener);
mDecrementButton.setOnLongClickListener(onLongClickListener);
}
} else {
mDecrementButton = null;
}
mInputText = (NumberPickerEditText) findViewById(R.id.numberpicker_input);
mInputText.setOnFocusChangeListener(new OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
mInputText.selectAll();
} else {
mInputText.setSelection(0, 0);
validateInputTextView(mInputText);
}
}
});
mInputText.setFilters(new InputFilter[] {
new InputTextFilter()
});
mInputText.setRawInputType(InputType.TYPE_CLASS_NUMBER);
mInputText.setImeOptions(EditorInfo.IME_ACTION_DONE);
ViewConfiguration configuration = ViewConfiguration.get(context);
mTouchSlop = configuration.getScaledTouchSlop();
mMinimumFlingVelocity = configuration.getScaledMinimumFlingVelocity();
mMaximumFlingVelocity = configuration.getScaledMaximumFlingVelocity()
/ NumberPicker.SELECTOR_MAX_FLING_VELOCITY_ADJUSTMENT;
mTextSize = (int) mInputText.getTextSize();
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setTextAlign(Align.CENTER);
paint.setTextSize(mTextSize);
paint.setTypeface(mInputText.getTypeface());
ColorStateList colors = mInputText.getTextColors();
int color = colors
.getColorForState(View.ENABLED_STATE_SET, Color.WHITE);
paint.setColor(color);
mSelectorWheelPaint = paint;
mFlingScroller = new Scroller(getContext(), null, true);
mAdjustScroller = new Scroller(getContext(),
new DecelerateInterpolator(2.5f));
updateInputTextView();
if (VERSION.SDK_INT >= 16
&& getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
}
}
@Override
public void addFocusables(ArrayList views, int direction,
int focusableMode) {
if ((focusableMode & NumberPicker.FOCUSABLES_ACCESSIBILITY) == NumberPicker.FOCUSABLES_ACCESSIBILITY) {
views.add(this);
return;
}
super.addFocusables(views, direction, focusableMode);
}
private void changeValueByOne(boolean increment) {
if (mHasSelectorWheel) {
mInputText.setVisibility(View.INVISIBLE);
if (!moveToFinalScrollerPosition(mFlingScroller)) {
moveToFinalScrollerPosition(mAdjustScroller);
}
mPreviousScrollerY = 0;
if (increment) {
mFlingScroller.startScroll(0, 0, 0, -mSelectorElementHeight,
NumberPicker.SNAP_SCROLL_DURATION);
} else {
mFlingScroller.startScroll(0, 0, 0, mSelectorElementHeight,
NumberPicker.SNAP_SCROLL_DURATION);
}
invalidate();
} else {
if (increment) {
setValueInternal(mValue + 1, true);
} else {
setValueInternal(mValue - 1, true);
}
}
}
@Override
public void computeScroll() {
Scroller scroller = mFlingScroller;
if (scroller.isFinished()) {
scroller = mAdjustScroller;
if (scroller.isFinished()) {
return;
}
}
scroller.computeScrollOffset();
int currentScrollerY = scroller.getCurrY();
if (mPreviousScrollerY == 0) {
mPreviousScrollerY = scroller.getStartY();
}
scrollBy(0, currentScrollerY - mPreviousScrollerY);
mPreviousScrollerY = currentScrollerY;
if (scroller.isFinished()) {
onScrollerFinished(scroller);
} else {
invalidate();
}
}
private void decrementSelectorIndices(int[] selectorIndices) {
for (int i = selectorIndices.length - 1; i > 0; i--) {
selectorIndices[i] = selectorIndices[i - 1];
}
int nextScrollSelectorIndex = selectorIndices[1] - 1;
if (mWrapSelectorWheel && nextScrollSelectorIndex < mMinValue) {
nextScrollSelectorIndex = mMaxValue;
}
selectorIndices[0] = nextScrollSelectorIndex;
ensureCachedScrollSelectorValue(nextScrollSelectorIndex);
}
@Override
@SuppressLint("NewApi")
protected boolean dispatchHoverEvent(MotionEvent event) {
if (!mHasSelectorWheel) {
return super.dispatchHoverEvent(event);
}
if (((AccessibilityManager) getContext().getSystemService(
Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_HOVER_ENTER: {
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_HOVER_ENTER);
if (VERSION.SDK_INT >= 16) {
performAccessibilityAction(
AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS,
null);
}
}
break;
case MotionEvent.ACTION_HOVER_MOVE: {
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_HOVER_EXIT);
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_HOVER_ENTER);
if (VERSION.SDK_INT >= 16) {
performAccessibilityAction(
AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS,
null);
}
}
break;
case MotionEvent.ACTION_HOVER_EXIT: {
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_HOVER_EXIT);
}
break;
}
}
return false;
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
final int keyCode = event.getKeyCode();
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_CENTER:
case KeyEvent.KEYCODE_ENTER:
removeAllCallbacks();
break;
}
return super.dispatchKeyEvent(event);
}
@Override
public boolean dispatchTouchEvent(MotionEvent event) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
removeAllCallbacks();
break;
}
return super.dispatchTouchEvent(event);
}
@Override
public boolean dispatchTrackballEvent(MotionEvent event) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
removeAllCallbacks();
break;
}
return super.dispatchTrackballEvent(event);
}
private void ensureCachedScrollSelectorValue(int selectorIndex) {
SparseArray cache = mSelectorIndexToStringCache;
String scrollSelectorValue = cache.get(selectorIndex);
if (scrollSelectorValue != null) {
return;
}
if (selectorIndex < mMinValue || selectorIndex > mMaxValue) {
scrollSelectorValue = "";
} else {
if (mDisplayedValues != null) {
int displayedValueIndex = selectorIndex - mMinValue;
scrollSelectorValue = mDisplayedValues[displayedValueIndex];
} else {
scrollSelectorValue = formatNumber(selectorIndex);
}
}
cache.put(selectorIndex, scrollSelectorValue);
}
private boolean ensureScrollWheelAdjusted() {
int deltaY = mInitialScrollOffset - mCurrentScrollOffset;
if (deltaY != 0) {
mPreviousScrollerY = 0;
if (Math.abs(deltaY) > mSelectorElementHeight / 2) {
deltaY += deltaY > 0 ? -mSelectorElementHeight
: mSelectorElementHeight;
}
mAdjustScroller.startScroll(0, 0, 0, deltaY,
NumberPicker.SELECTOR_ADJUSTMENT_DURATION_MILLIS);
invalidate();
return true;
}
return false;
}
private void fling(int velocityY) {
mPreviousScrollerY = 0;
if (velocityY > 0) {
mFlingScroller
.fling(0, 0, 0, velocityY, 0, 0, 0, Integer.MAX_VALUE);
} else {
mFlingScroller.fling(0, Integer.MAX_VALUE, 0, velocityY, 0, 0, 0,
Integer.MAX_VALUE);
}
invalidate();
}
private String formatNumber(int value) {
return mFormatter != null ? mFormatter.format(value) : String
.valueOf(value);
}
@Override
protected float getBottomFadingEdgeStrength() {
return NumberPicker.TOP_AND_BOTTOM_FADING_EDGE_STRENGTH;
}
public String[] getDisplayedValues() {
return mDisplayedValues;
}
public NumberPickerEditText getInputField() {
return mInputText;
}
public int getMaxValue() {
return mMaxValue;
}
public int getMinValue() {
return mMinValue;
}
private int getSelectedPos(String value) {
if (mDisplayedValues != null) {
for (int i = 0; i < mDisplayedValues.length; i++) {
value = value.toLowerCase();
if (mDisplayedValues[i].toLowerCase().startsWith(value)) {
return mMinValue + i;
}
}
}
try {
return Integer.parseInt(value);
} catch (NumberFormatException e) {
}
return mMinValue;
}
@Override
public int getSolidColor() {
return mSolidColor;
}
@Override
protected float getTopFadingEdgeStrength() {
return NumberPicker.TOP_AND_BOTTOM_FADING_EDGE_STRENGTH;
}
public int getValue() {
return mValue;
}
private int getWrappedSelectorIndex(int selectorIndex) {
if (selectorIndex > mMaxValue) {
return mMinValue + (selectorIndex - mMaxValue)
% (mMaxValue - mMinValue) - 1;
} else if (selectorIndex < mMinValue) {
return mMaxValue - (mMinValue - selectorIndex)
% (mMaxValue - mMinValue) + 1;
}
return selectorIndex;
}
public boolean getWrapSelectorWheel() {
return mWrapSelectorWheel;
}
private void hideSoftInput() {
InputMethodManager inputMethodManager = (InputMethodManager) getContext()
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputMethodManager != null
&& inputMethodManager.isActive(mInputText)) {
inputMethodManager.hideSoftInputFromWindow(getWindowToken(), 0);
if (mHasSelectorWheel) {
mInputText.setVisibility(View.INVISIBLE);
}
}
}
private void incrementSelectorIndices(int[] selectorIndices) {
for (int i = 0; i < selectorIndices.length - 1; i++) {
selectorIndices[i] = selectorIndices[i + 1];
}
int nextScrollSelectorIndex = selectorIndices[selectorIndices.length - 2] + 1;
if (mWrapSelectorWheel && nextScrollSelectorIndex > mMaxValue) {
nextScrollSelectorIndex = mMinValue;
}
selectorIndices[selectorIndices.length - 1] = nextScrollSelectorIndex;
ensureCachedScrollSelectorValue(nextScrollSelectorIndex);
}
private void initializeFadingEdges() {
setVerticalFadingEdgeEnabled(true);
setFadingEdgeLength((getBottom() - getTop() - mTextSize) / 2);
}
private void initializeSelectorWheel() {
initializeSelectorWheelIndices();
int[] selectorIndices = mSelectorIndices;
int totalTextHeight = selectorIndices.length * mTextSize;
float totalTextGapHeight = getBottom() - getTop() - totalTextHeight;
float textGapCount = selectorIndices.length;
mSelectorTextGapHeight = (int) (totalTextGapHeight / textGapCount + 0.5f);
mSelectorElementHeight = mTextSize + mSelectorTextGapHeight;
int editTextTextPosition = mInputText.getBaseline()
+ mInputText.getTop();
mInitialScrollOffset = editTextTextPosition - mSelectorElementHeight
* NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX;
mCurrentScrollOffset = mInitialScrollOffset;
updateInputTextView();
}
private void initializeSelectorWheelIndices() {
mSelectorIndexToStringCache.clear();
int[] selectorIndices = mSelectorIndices;
int current = getValue();
for (int i = 0; i < mSelectorIndices.length; i++) {
int selectorIndex = current + i
- NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX;
if (mWrapSelectorWheel) {
selectorIndex = getWrappedSelectorIndex(selectorIndex);
}
selectorIndices[i] = selectorIndex;
ensureCachedScrollSelectorValue(selectorIndices[i]);
}
}
private int makeMeasureSpec(int measureSpec, int maxSize) {
if (maxSize == NumberPicker.SIZE_UNSPECIFIED) {
return measureSpec;
}
final int size = MeasureSpec.getSize(measureSpec);
final int mode = MeasureSpec.getMode(measureSpec);
switch (mode) {
case MeasureSpec.EXACTLY:
return measureSpec;
case MeasureSpec.AT_MOST:
return MeasureSpec.makeMeasureSpec(Math.min(size, maxSize),
MeasureSpec.EXACTLY);
case MeasureSpec.UNSPECIFIED:
return MeasureSpec.makeMeasureSpec(maxSize, MeasureSpec.EXACTLY);
default:
throw new IllegalArgumentException("Unknown measure mode: " + mode);
}
}
private boolean moveToFinalScrollerPosition(Scroller scroller) {
scroller.forceFinished(true);
int amountToScroll = scroller.getFinalY() - scroller.getCurrY();
int futureScrollOffset = (mCurrentScrollOffset + amountToScroll)
% mSelectorElementHeight;
int overshootAdjustment = mInitialScrollOffset - futureScrollOffset;
if (overshootAdjustment != 0) {
if (Math.abs(overshootAdjustment) > mSelectorElementHeight / 2) {
if (overshootAdjustment > 0) {
overshootAdjustment -= mSelectorElementHeight;
} else {
overshootAdjustment += mSelectorElementHeight;
}
}
amountToScroll += overshootAdjustment;
scrollBy(0, amountToScroll);
return true;
}
return false;
}
private void notifyChange(int previous, int current) {
if (mOnValueChangeListener != null) {
mOnValueChangeListener.onValueChange(this, previous, mValue);
}
}
@Override
protected void onDetachedFromWindow() {
removeAllCallbacks();
}
@Override
protected void onDraw(Canvas canvas) {
if (!mHasSelectorWheel) {
super.onDraw(canvas);
return;
}
float x = (getRight() - getLeft()) / 2;
float y = mCurrentScrollOffset;
if (mVirtualButtonPressedDrawable != null
&& mScrollState == OnScrollListener.SCROLL_STATE_IDLE) {
if (mDecrementVirtualButtonPressed) {
mVirtualButtonPressedDrawable
.setState(org.holoeverywhere.internal._View.PRESSED_STATE_SET);
mVirtualButtonPressedDrawable.setBounds(0, 0, getRight(),
mTopSelectionDividerTop);
mVirtualButtonPressedDrawable.draw(canvas);
}
if (mIncrementVirtualButtonPressed) {
mVirtualButtonPressedDrawable
.setState(org.holoeverywhere.internal._View.PRESSED_STATE_SET);
mVirtualButtonPressedDrawable.setBounds(0,
mBottomSelectionDividerBottom, getRight(), getBottom());
mVirtualButtonPressedDrawable.draw(canvas);
}
}
int[] selectorIndices = mSelectorIndices;
for (int i = 0; i < selectorIndices.length; i++) {
int selectorIndex = selectorIndices[i];
String scrollSelectorValue = mSelectorIndexToStringCache
.get(selectorIndex);
if (i != NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX
|| mInputText.getVisibility() != View.VISIBLE) {
canvas.drawText(scrollSelectorValue, x, y, mSelectorWheelPaint);
}
y += mSelectorElementHeight;
}
if (mSelectionDivider != null) {
int topOfTopDivider = mTopSelectionDividerTop;
int bottomOfTopDivider = topOfTopDivider + mSelectionDividerHeight;
mSelectionDivider.setBounds(0, topOfTopDivider, getRight(),
bottomOfTopDivider);
mSelectionDivider.draw(canvas);
int bottomOfBottomDivider = mBottomSelectionDividerBottom;
int topOfBottomDivider = bottomOfBottomDivider
- mSelectionDividerHeight;
mSelectionDivider.setBounds(0, topOfBottomDivider, getRight(),
bottomOfBottomDivider);
mSelectionDivider.draw(canvas);
}
}
@Override
@SuppressLint("NewApi")
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
event.setClassName(NumberPicker.class.getName());
event.setScrollable(true);
event.setScrollY((mMinValue + mValue) * mSelectorElementHeight);
event.setMaxScrollY((mMaxValue - mMinValue) * mSelectorElementHeight);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if (!mHasSelectorWheel || !isEnabled()) {
return false;
}
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN: {
removeAllCallbacks();
mInputText.setVisibility(View.INVISIBLE);
mLastDownOrMoveEventY = mLastDownEventY = event.getY();
mLastDownEventTime = event.getEventTime();
mIngonreMoveEvents = false;
mShowSoftInputOnTap = false;
if (mLastDownEventY < mTopSelectionDividerTop) {
if (mScrollState == OnScrollListener.SCROLL_STATE_IDLE) {
mPressedStateHelper
.buttonPressDelayed(PressedStateHelper.BUTTON_DECREMENT);
}
} else if (mLastDownEventY > mBottomSelectionDividerBottom) {
if (mScrollState == OnScrollListener.SCROLL_STATE_IDLE) {
mPressedStateHelper
.buttonPressDelayed(PressedStateHelper.BUTTON_INCREMENT);
}
}
getParent().requestDisallowInterceptTouchEvent(true);
if (!mFlingScroller.isFinished()) {
mFlingScroller.forceFinished(true);
mAdjustScroller.forceFinished(true);
onScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE);
} else if (!mAdjustScroller.isFinished()) {
mFlingScroller.forceFinished(true);
mAdjustScroller.forceFinished(true);
} else if (mLastDownEventY < mTopSelectionDividerTop) {
hideSoftInput();
postChangeCurrentByOneFromLongPress(false,
ViewConfiguration.getLongPressTimeout());
} else if (mLastDownEventY > mBottomSelectionDividerBottom) {
hideSoftInput();
postChangeCurrentByOneFromLongPress(true,
ViewConfiguration.getLongPressTimeout());
} else {
mShowSoftInputOnTap = true;
postBeginSoftInputOnLongPressCommand();
}
return true;
}
}
return false;
}
@Override
protected void onLayout(boolean changed, int left, int top, int right,
int bottom) {
if (!mHasSelectorWheel) {
super.onLayout(changed, left, top, right, bottom);
return;
}
final int msrdWdth = getMeasuredWidth();
final int msrdHght = getMeasuredHeight();
final int inptTxtMsrdWdth = mInputText.getMeasuredWidth();
final int inptTxtMsrdHght = mInputText.getMeasuredHeight();
final int inptTxtLeft = (msrdWdth - inptTxtMsrdWdth) / 2;
final int inptTxtTop = (msrdHght - inptTxtMsrdHght) / 2;
final int inptTxtRight = inptTxtLeft + inptTxtMsrdWdth;
final int inptTxtBottom = inptTxtTop + inptTxtMsrdHght;
mInputText.layout(inptTxtLeft, inptTxtTop, inptTxtRight, inptTxtBottom);
if (changed) {
initializeSelectorWheel();
initializeFadingEdges();
mTopSelectionDividerTop = (getHeight() - mSelectionDividersDistance)
/ 2 - mSelectionDividerHeight;
mBottomSelectionDividerBottom = mTopSelectionDividerTop + 2
* mSelectionDividerHeight + mSelectionDividersDistance;
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (!mHasSelectorWheel) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
return;
}
final int newWidthMeasureSpec = makeMeasureSpec(widthMeasureSpec,
mMaxWidth);
final int newHeightMeasureSpec = makeMeasureSpec(heightMeasureSpec,
mMaxHeight);
super.onMeasure(newWidthMeasureSpec, newHeightMeasureSpec);
final int widthSize = resolveSizeAndStateRespectingMinSize(mMinWidth,
getMeasuredWidth(), widthMeasureSpec);
final int heightSize = resolveSizeAndStateRespectingMinSize(mMinHeight,
getMeasuredHeight(), heightMeasureSpec);
setMeasuredDimension(widthSize, heightSize);
}
private void onScrollerFinished(Scroller scroller) {
if (scroller == mFlingScroller) {
if (!ensureScrollWheelAdjusted()) {
updateInputTextView();
}
onScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE);
} else {
if (mScrollState != OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {
updateInputTextView();
}
}
}
private void onScrollStateChange(int scrollState) {
if (mScrollState == scrollState) {
return;
}
mScrollState = scrollState;
if (mOnScrollListener != null) {
mOnScrollListener.onScrollStateChange(this, scrollState);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!isEnabled() || !mHasSelectorWheel) {
return false;
}
if (mVelocityTracker == null) {
mVelocityTracker = VelocityTracker.obtain();
}
mVelocityTracker.addMovement(event);
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_MOVE: {
if (mIngonreMoveEvents) {
break;
}
float currentMoveY = event.getY();
if (mScrollState != OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {
int deltaDownY = (int) Math.abs(currentMoveY - mLastDownEventY);
if (deltaDownY > mTouchSlop) {
removeAllCallbacks();
onScrollStateChange(OnScrollListener.SCROLL_STATE_TOUCH_SCROLL);
}
} else {
int deltaMoveY = (int) (currentMoveY - mLastDownOrMoveEventY);
scrollBy(0, deltaMoveY);
invalidate();
}
mLastDownOrMoveEventY = currentMoveY;
}
break;
case MotionEvent.ACTION_UP: {
removeBeginSoftInputCommand();
removeChangeCurrentByOneFromLongPress();
mPressedStateHelper.cancel();
VelocityTracker velocityTracker = mVelocityTracker;
velocityTracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
int initialVelocity = (int) velocityTracker.getYVelocity();
if (Math.abs(initialVelocity) > mMinimumFlingVelocity) {
fling(initialVelocity);
onScrollStateChange(OnScrollListener.SCROLL_STATE_FLING);
} else {
int eventY = (int) event.getY();
int deltaMoveY = (int) Math.abs(eventY - mLastDownEventY);
long deltaTime = event.getEventTime() - mLastDownEventTime;
if (deltaMoveY <= mTouchSlop
&& deltaTime < ViewConfiguration.getTapTimeout()) {
if (mShowSoftInputOnTap) {
mShowSoftInputOnTap = false;
showSoftInput();
} else {
int selectorIndexOffset = eventY
/ mSelectorElementHeight
- NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX;
if (selectorIndexOffset > 0) {
changeValueByOne(true);
mPressedStateHelper
.buttonTapped(PressedStateHelper.BUTTON_INCREMENT);
} else if (selectorIndexOffset < 0) {
changeValueByOne(false);
mPressedStateHelper
.buttonTapped(PressedStateHelper.BUTTON_DECREMENT);
}
}
} else {
ensureScrollWheelAdjusted();
}
onScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE);
}
mVelocityTracker.recycle();
mVelocityTracker = null;
}
break;
}
return true;
}
private void postBeginSoftInputOnLongPressCommand() {
if (mBeginSoftInputOnLongPressCommand == null) {
mBeginSoftInputOnLongPressCommand = new BeginSoftInputOnLongPressCommand();
} else {
removeCallbacks(mBeginSoftInputOnLongPressCommand);
}
postDelayed(mBeginSoftInputOnLongPressCommand,
ViewConfiguration.getLongPressTimeout());
}
private void postChangeCurrentByOneFromLongPress(boolean increment,
long delayMillis) {
if (mChangeCurrentByOneFromLongPressCommand == null) {
mChangeCurrentByOneFromLongPressCommand = new ChangeCurrentByOneFromLongPressCommand();
} else {
removeCallbacks(mChangeCurrentByOneFromLongPressCommand);
}
mChangeCurrentByOneFromLongPressCommand.setStep(increment);
postDelayed(mChangeCurrentByOneFromLongPressCommand, delayMillis);
}
private void postSetSelectionCommand(int selectionStart, int selectionEnd) {
if (mSetSelectionCommand == null) {
mSetSelectionCommand = new SetSelectionCommand();
} else {
removeCallbacks(mSetSelectionCommand);
}
mSetSelectionCommand.mSelectionStart = selectionStart;
mSetSelectionCommand.mSelectionEnd = selectionEnd;
post(mSetSelectionCommand);
}
private void removeAllCallbacks() {
if (mChangeCurrentByOneFromLongPressCommand != null) {
removeCallbacks(mChangeCurrentByOneFromLongPressCommand);
}
if (mSetSelectionCommand != null) {
removeCallbacks(mSetSelectionCommand);
}
if (mBeginSoftInputOnLongPressCommand != null) {
removeCallbacks(mBeginSoftInputOnLongPressCommand);
}
mPressedStateHelper.cancel();
}
private void removeBeginSoftInputCommand() {
if (mBeginSoftInputOnLongPressCommand != null) {
removeCallbacks(mBeginSoftInputOnLongPressCommand);
}
}
private void removeChangeCurrentByOneFromLongPress() {
if (mChangeCurrentByOneFromLongPressCommand != null) {
removeCallbacks(mChangeCurrentByOneFromLongPressCommand);
}
}
private int resolveSizeAndStateRespectingMinSize(int minSize,
int measuredSize, int measureSpec) {
if (minSize != NumberPicker.SIZE_UNSPECIFIED) {
final int desiredWidth = Math.max(minSize, measuredSize);
return org.holoeverywhere.internal._View
.supportResolveSizeAndState(desiredWidth, measureSpec, 0);
} else {
return measuredSize;
}
}
@Override
public void scrollBy(int x, int y) {
int[] selectorIndices = mSelectorIndices;
if (!mWrapSelectorWheel
&& y > 0
&& selectorIndices[NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX] <= mMinValue) {
mCurrentScrollOffset = mInitialScrollOffset;
return;
}
if (!mWrapSelectorWheel
&& y < 0
&& selectorIndices[NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX] >= mMaxValue) {
mCurrentScrollOffset = mInitialScrollOffset;
return;
}
mCurrentScrollOffset += y;
while (mCurrentScrollOffset - mInitialScrollOffset > mSelectorTextGapHeight) {
mCurrentScrollOffset -= mSelectorElementHeight;
decrementSelectorIndices(selectorIndices);
setValueInternal(
selectorIndices[NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX],
true);
if (!mWrapSelectorWheel
&& selectorIndices[NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX] <= mMinValue) {
mCurrentScrollOffset = mInitialScrollOffset;
}
}
while (mCurrentScrollOffset - mInitialScrollOffset < -mSelectorTextGapHeight) {
mCurrentScrollOffset += mSelectorElementHeight;
incrementSelectorIndices(selectorIndices);
setValueInternal(
selectorIndices[NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX],
true);
if (!mWrapSelectorWheel
&& selectorIndices[NumberPicker.SELECTOR_WHELL_MIDDLE_ITEM_INDEX] >= mMaxValue) {
mCurrentScrollOffset = mInitialScrollOffset;
}
}
}
public void setDisplayedValues(String[] displayedValues) {
if (mDisplayedValues == displayedValues) {
return;
}
mDisplayedValues = displayedValues;
if (mDisplayedValues != null) {
mInputText.setRawInputType(InputType.TYPE_CLASS_TEXT
| InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
} else {
mInputText.setRawInputType(InputType.TYPE_CLASS_NUMBER);
}
updateInputTextView();
initializeSelectorWheelIndices();
tryComputeMaxWidth();
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
if (!mHasSelectorWheel) {
mIncrementButton.setEnabled(enabled);
}
if (!mHasSelectorWheel) {
mDecrementButton.setEnabled(enabled);
}
mInputText.setEnabled(enabled);
}
public void setFormatter(Formatter formatter) {
if (formatter == mFormatter) {
return;
}
mFormatter = formatter;
initializeSelectorWheelIndices();
updateInputTextView();
}
public void setMaxValue(int maxValue) {
if (mMaxValue == maxValue) {
return;
}
if (maxValue < 0) {
throw new IllegalArgumentException("maxValue must be >= 0");
}
mMaxValue = maxValue;
if (mMaxValue < mValue) {
mValue = mMaxValue;
}
boolean wrapSelectorWheel = mMaxValue - mMinValue > mSelectorIndices.length;
setWrapSelectorWheel(wrapSelectorWheel);
initializeSelectorWheelIndices();
updateInputTextView();
tryComputeMaxWidth();
invalidate();
}
public void setMinValue(int minValue) {
if (mMinValue == minValue) {
return;
}
if (minValue < 0) {
throw new IllegalArgumentException("minValue must be >= 0");
}
mMinValue = minValue;
if (mMinValue > mValue) {
mValue = mMinValue;
}
boolean wrapSelectorWheel = mMaxValue - mMinValue > mSelectorIndices.length;
setWrapSelectorWheel(wrapSelectorWheel);
initializeSelectorWheelIndices();
updateInputTextView();
tryComputeMaxWidth();
invalidate();
}
public void setOnLongPressUpdateInterval(long intervalMillis) {
mLongPressUpdateInterval = intervalMillis;
}
public void setOnScrollListener(OnScrollListener onScrollListener) {
mOnScrollListener = onScrollListener;
}
public void setOnValueChangedListener(
OnValueChangeListener onValueChangedListener) {
mOnValueChangeListener = onValueChangedListener;
}
public void setValue(int value) {
setValueInternal(value, false);
}
private void setValueInternal(int current, boolean notifyChange) {
if (mValue == current) {
return;
}
if (mWrapSelectorWheel) {
current = getWrappedSelectorIndex(current);
} else {
current = Math.max(current, mMinValue);
current = Math.min(current, mMaxValue);
}
int previous = mValue;
mValue = current;
updateInputTextView();
if (notifyChange) {
notifyChange(previous, current);
}
initializeSelectorWheelIndices();
invalidate();
}
public void setWrapSelectorWheel(boolean wrapSelectorWheel) {
final boolean wrappingAllowed = mMaxValue - mMinValue >= mSelectorIndices.length;
if ((!wrapSelectorWheel || wrappingAllowed)
&& wrapSelectorWheel != mWrapSelectorWheel) {
mWrapSelectorWheel = wrapSelectorWheel;
}
}
private void showSoftInput() {
InputMethodManager inputMethodManager = (InputMethodManager) getContext()
.getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputMethodManager != null) {
if (mHasSelectorWheel) {
mInputText.setVisibility(View.VISIBLE);
}
mInputText.requestFocus();
inputMethodManager.showSoftInput(mInputText, 0);
}
}
private void tryComputeMaxWidth() {
if (!mComputeMaxWidth) {
return;
}
int maxTextWidth = 0;
if (mDisplayedValues == null) {
float maxDigitWidth = 0;
for (int i = 0; i <= 9; i++) {
final float digitWidth = mSelectorWheelPaint.measureText(String
.valueOf(i));
if (digitWidth > maxDigitWidth) {
maxDigitWidth = digitWidth;
}
}
int numberOfDigits = 0;
int current = mMaxValue;
while (current > 0) {
numberOfDigits++;
current = current / 10;
}
maxTextWidth = (int) (numberOfDigits * maxDigitWidth);
} else {
final int valueCount = mDisplayedValues.length;
for (int i = 0; i < valueCount; i++) {
final float textWidth = mSelectorWheelPaint
.measureText(mDisplayedValues[i]);
if (textWidth > maxTextWidth) {
maxTextWidth = (int) textWidth;
}
}
}
maxTextWidth += mInputText.getPaddingLeft()
+ mInputText.getPaddingRight();
if (mMaxWidth != maxTextWidth) {
if (maxTextWidth > mMinWidth) {
mMaxWidth = maxTextWidth;
} else {
mMaxWidth = mMinWidth;
}
invalidate();
}
}
private boolean updateInputTextView() {
String text = mDisplayedValues == null ? formatNumber(mValue)
: mDisplayedValues[mValue - mMinValue];
if (!TextUtils.isEmpty(text)
&& !text.equals(mInputText.getText().toString())) {
mInputText.setText(text);
return true;
}
return false;
}
private void validateInputTextView(NumberPickerEditText v) {
String str = String.valueOf(v.getText());
if (TextUtils.isEmpty(str)) {
updateInputTextView();
} else {
int current = getSelectedPos(str.toString());
setValueInternal(current, true);
}
}
}
