package com.tencent.tws.assistant.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.ViewDebug;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.widget.Button;
import android.widget.Checkable;
import com.tencent.tws.sharelib.R;
import android.widget.LinearLayout;
public class SegmentButton extends Button implements Checkable {
private boolean mChecked;
private int mButtonResource;
private boolean mBroadcasting;
private Drawable mButtonDrawable;
private OnCheckedChangeListener mOnCheckedChangeListener;
private OnCheckedChangeListener mOnCheckedChangeWidgetListener;
private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked};
private static final int[] HORIZONTAL_FIRST_STATE_SET = {R.attr.state_first_h};
private static final int[] HORIZONTAL_MIDDLE_STATE_SET = {R.attr.state_middle_h};
private static final int[] HORIZONTAL_LAST_STATE_SET = {R.attr.state_last_h};
private static final int[] HORIZONTAL_SINGLE_STATE_SET = {R.attr.state_single_h};
private static final int[] VERTICAL_FIRST_STATE_SET = {R.attr.state_first_v};
private static final int[] VERTICAL_MIDDLE_STATE_SET = {R.attr.state_middle_v};
private static final int[] VERTICAL_LAST_STATE_SET = {R.attr.state_last_v};
private static final int[] VERTICAL_SINGLE_STATE_SET = {R.attr.state_single_v};
public static final int STATE_HORIZONTAL_SINGLE = 1000;
public static final int STATE_HORIZONTAL_FIRST = 1001;
public static final int STATE_HORIZONTAL_MIDDLE = 1002;
public static final int STATE_HORIZONTAL_LAST = 1003;
public static final int STATE_VERTICAL_SINGLE = 2000;
public static final int STATE_VERTICAL_FIRST = 2001;
public static final int STATE_VERTICAL_MIDDLE = 2002;
public static final int STATE_VERTICAL_LAST = 2003;
private int mBackgroundState = STATE_HORIZONTAL_SINGLE;
public SegmentButton(Context context) {
this(context, null);
}
public SegmentButton(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.segmentButtonStyle);
}
public SegmentButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SegmentButton, defStyle, 0);
Drawable d = a.getDrawable(R.styleable.SegmentButton_button);
if (d != null) {
setButtonDrawable(d);
}
boolean checked = a.getBoolean(R.styleable.SegmentButton_checked, false);
setChecked(checked);
a.recycle();
}
public void toggle() {
if (!isChecked()) {
setChecked(!mChecked);
}
}
@Override
public boolean performClick() {
/*
* XXX: These are tiny, need some surrounding 'expanded touch area',
* which will need to be implemented in Button if we only override
* performClick()
*/
/* When clicked, toggle the state */
toggle();
return super.performClick();
}
@ViewDebug.ExportedProperty
public boolean isChecked() {
return mChecked;
}
/**
* <p>
* Changes the checked state of this button.
* </p>
*
* @param checked
* true to check the button, false to uncheck it
*/
public void setChecked(boolean checked) {
if (mChecked != checked) {
mChecked = checked;
refreshDrawableState();
// notifyViewAccessibilityStateChangedIfNeeded(
// AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
// Avoid infinite recursions if setChecked() is called from a listener
if (mBroadcasting) {
return;
}
mBroadcasting = true;
if (mOnCheckedChangeListener != null) {
mOnCheckedChangeListener.onCheckedChanged(this, mChecked);
}
if (mOnCheckedChangeWidgetListener != null) {
mOnCheckedChangeWidgetListener.onCheckedChanged(this, mChecked);
}
mBroadcasting = false;
}
}
/**
* Register a callback to be invoked when the checked state of this button changes.
*
* @param listener
* the callback to call on checked state change
*/
public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
mOnCheckedChangeListener = listener;
}
/**
* Register a callback to be invoked when the checked state of this button changes. This callback is used
* for internal purpose only.
*
* @param listener
* the callback to call on checked state change
* @hide
*/
void setOnCheckedChangeWidgetListener(OnCheckedChangeListener listener) {
mOnCheckedChangeWidgetListener = listener;
}
/**
* Interface definition for a callback to be invoked when the checked state of a segment button changed.
*/
public static interface OnCheckedChangeListener {
/**
* Called when the checked state of a segment button has changed.
*
* @param buttonView
* The segment button view whose state has changed.
* @param isChecked
* The new checked state of buttonView.
*/
void onCheckedChanged(SegmentButton buttonView, boolean isChecked);
}
/**
* Set the background to a given Drawable, identified by its resource id.
*
* @param resid
* the resource id of the drawable to use as the background
*/
public void setButtonDrawable(int resid) {
if (resid != 0 && resid == mButtonResource) {
return;
}
mButtonResource = resid;
Drawable d = null;
if (mButtonResource != 0) {
d = getResources().getDrawable(mButtonResource);
}
setButtonDrawable(d);
}
/**
* Set the background to a given Drawable
*
* @param d
* The Drawable to use as the background
*/
public void setButtonDrawable(Drawable d) {
if (d != null) {
if (mButtonDrawable != null) {
mButtonDrawable.setCallback(null);
unscheduleDrawable(mButtonDrawable);
}
d.setCallback(this);
d.setVisible(getVisibility() == VISIBLE, false);
mButtonDrawable = d;
setMinHeight(mButtonDrawable.getIntrinsicHeight());
}
refreshDrawableState();
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
event.setClassName(SegmentButton.class.getName());
event.setChecked(mChecked);
}
@Override
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setClassName(SegmentButton.class.getName());
info.setCheckable(true);
info.setChecked(mChecked);
}
@Override
public int getCompoundPaddingLeft() {
int padding = super.getCompoundPaddingLeft();
if (!isLayoutRtl()) {
final Drawable buttonDrawable = mButtonDrawable;
if (buttonDrawable != null) {
padding += buttonDrawable.getIntrinsicWidth();
}
}
return padding;
}
@Override
public int getCompoundPaddingRight() {
int padding = super.getCompoundPaddingRight();
if (isLayoutRtl()) {
final Drawable buttonDrawable = mButtonDrawable;
if (buttonDrawable != null) {
padding += buttonDrawable.getIntrinsicWidth();
}
}
return padding;
}
/**
* @hide
*/
@Override
public int getHorizontalOffsetForDrawables() {
final Drawable buttonDrawable = mButtonDrawable;
return (buttonDrawable != null) ? buttonDrawable.getIntrinsicWidth() : 0;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
boolean hasText = false;
CharSequence text = getText();
if (text != null && !TextUtils.isEmpty(text)) {
hasText = true;
} else {
hasText = false;
}
final Drawable buttonDrawable = mButtonDrawable;
if (buttonDrawable != null) {
final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK;
final int drawableHeight = buttonDrawable.getIntrinsicHeight();
final int drawableWidth = buttonDrawable.getIntrinsicWidth();
int top = 0;
switch (verticalGravity) {
case Gravity.BOTTOM:
top = getHeight() - drawableHeight;
break;
case Gravity.CENTER_VERTICAL:
top = (getHeight() - drawableHeight) / 2;
break;
}
int bottom = top + drawableHeight;
int left = isLayoutRtl() ? getWidth() - drawableWidth : 0;
int right = isLayoutRtl() ? getWidth() : drawableWidth;
//text is empty, buttondrawable draw center
if (!hasText) {
canvas.translate(Math.abs((getWidth() - drawableWidth)) / 2, 0);
}
buttonDrawable.setBounds(left, top, right, bottom);
buttonDrawable.draw(canvas);
}
}
@Override
protected int[] onCreateDrawableState(int extraSpace) {
/*final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
if (isChecked()) {
mergeDrawableStates(drawableState, CHECKED_STATE_SET);
}*/
final int[] drawableState = super.onCreateDrawableState(extraSpace + 2);
switch (mBackgroundState) {
case STATE_HORIZONTAL_SINGLE:
mergeDrawableStates(drawableState, HORIZONTAL_SINGLE_STATE_SET);
break;
case STATE_HORIZONTAL_FIRST:
mergeDrawableStates(drawableState, HORIZONTAL_FIRST_STATE_SET);
break;
case STATE_HORIZONTAL_MIDDLE:
mergeDrawableStates(drawableState, HORIZONTAL_MIDDLE_STATE_SET);
break;
case STATE_HORIZONTAL_LAST:
mergeDrawableStates(drawableState, HORIZONTAL_LAST_STATE_SET);
break;
case STATE_VERTICAL_SINGLE:
mergeDrawableStates(drawableState, VERTICAL_SINGLE_STATE_SET);
break;
case STATE_VERTICAL_FIRST:
mergeDrawableStates(drawableState, VERTICAL_FIRST_STATE_SET);
break;
case STATE_VERTICAL_MIDDLE:
mergeDrawableStates(drawableState, VERTICAL_MIDDLE_STATE_SET);
break;
case STATE_VERTICAL_LAST:
mergeDrawableStates(drawableState, VERTICAL_LAST_STATE_SET);
break;
default:
mergeDrawableStates(drawableState, HORIZONTAL_SINGLE_STATE_SET);
break;
}
if (isChecked()) {
mergeDrawableStates(drawableState, CHECKED_STATE_SET);
}
return drawableState;
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
if (mButtonDrawable != null) {
int[] myDrawableState = getDrawableState();
// Set the state of the Drawable
mButtonDrawable.setState(myDrawableState);
invalidate();
}
}
@Override
protected boolean verifyDrawable(Drawable who) {
return super.verifyDrawable(who) || who == mButtonDrawable;
}
@Override
public void jumpDrawablesToCurrentState() {
super.jumpDrawablesToCurrentState();
if (mButtonDrawable != null)
mButtonDrawable.jumpToCurrentState();
}
static class SavedState extends BaseSavedState {
boolean checked;
/**
* Constructor called from {@link segmentButton#onSaveInstanceState()}
*/
SavedState(Parcelable superState) {
super(superState);
}
/**
* Constructor called from {@link #CREATOR}
*/
private SavedState(Parcel in) {
super(in);
checked = (Boolean) in.readValue(null);
}
@Override
public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeValue(checked);
}
@Override
public String toString() {
return "SegmentButton.SavedState{" + Integer.toHexString(System.identityHashCode(this))
+ " checked=" + checked + "}";
}
public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
@Override
public Parcelable onSaveInstanceState() {
// Force our ancestor class to save its state
setFreezesText(true);
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.checked = isChecked();
return ss;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
setChecked(ss.checked);
requestLayout();
}
public void setBackgroundState (int backgroundState) {
mBackgroundState = backgroundState;
}
}