package com.android.app_base.widget;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.drawable.Drawable;
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import android.text.Editable;
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import android.text.TextWatcher;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.view.View;
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import androidx.annotation.DrawableRes;
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import androidx.annotation.Nullable;
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import androidx.appcompat.widget.AppCompatEditText;
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import androidx.core.content.ContextCompat;
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import androidx.core.graphics.drawable.DrawableCompat;
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import com.android.app_base.R;
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/**
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* @author Ljj
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* @date 2023.05.17. 17:00
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* @desc
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*/
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public final class ClearEditText extends AppCompatEditText
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implements View.OnTouchListener,
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View.OnFocusChangeListener, TextWatcher {
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private Drawable mClearDrawable;
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@Nullable
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private View.OnTouchListener mTouchListener;
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@Nullable
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private View.OnFocusChangeListener mFocusChangeListener;
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public ClearEditText(Context context) {
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this(context, null);
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}
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public ClearEditText(Context context, AttributeSet attrs) {
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this(context, attrs, android.R.attr.editTextStyle);
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}
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@SuppressWarnings("all")
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public ClearEditText(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ClearEditText);
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mClearDrawable = a.getDrawable(R.styleable.ClearEditText_background);
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if (mClearDrawable == null){
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mClearDrawable = DrawableCompat.wrap(ContextCompat.getDrawable(context, R.drawable.input_delete_ic));
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}
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mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight());
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setDrawableVisible(false);
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super.setOnTouchListener(this);
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super.setOnFocusChangeListener(this);
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super.addTextChangedListener(this);
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}
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private void setDrawableVisible(boolean visible) {
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if (mClearDrawable.isVisible() == visible) {
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return;
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}
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mClearDrawable.setVisible(visible, false);
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Drawable[] drawables = getCompoundDrawablesRelative();
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setCompoundDrawablesRelative(
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drawables[0],
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drawables[1],
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visible ? mClearDrawable : null,
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drawables[3]);
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}
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@Override
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public void setOnFocusChangeListener(@Nullable View.OnFocusChangeListener onFocusChangeListener) {
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mFocusChangeListener = onFocusChangeListener;
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}
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@Override
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public void setOnTouchListener(@Nullable View.OnTouchListener onTouchListener) {
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mTouchListener = onTouchListener;
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}
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/**
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* {@link View.OnFocusChangeListener}
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*/
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@Override
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public void onFocusChange(View view, boolean hasFocus) {
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if (hasFocus && getText() != null) {
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setDrawableVisible(getText().length() > 0);
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} else {
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setDrawableVisible(true);
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}
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setDrawableVisible(getText() != null && getText().length() > 0);
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if (mFocusChangeListener != null) {
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mFocusChangeListener.onFocusChange(view, hasFocus);
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}
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}
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/**
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* {@link View.OnTouchListener}
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*/
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@Override
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public boolean onTouch(View view, MotionEvent event) {
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int x = (int) event.getX();
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// 是否触摸了 Drawable
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boolean touchDrawable = false;
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// 获取布局方向
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int layoutDirection = getLayoutDirection();
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if (layoutDirection == LAYOUT_DIRECTION_LTR) {
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// 从左往右
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touchDrawable = x > getWidth() - mClearDrawable.getIntrinsicWidth() - getPaddingEnd() &&
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x < getWidth() - getPaddingEnd();
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} else if (layoutDirection == LAYOUT_DIRECTION_RTL) {
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// 从右往左
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touchDrawable = x > getPaddingStart() &&
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x < getPaddingStart() + mClearDrawable.getIntrinsicWidth();
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}
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if (mClearDrawable.isVisible() && touchDrawable) {
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if (event.getAction() == MotionEvent.ACTION_UP) {
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setText("");
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setDrawableVisible(false);
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}
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return true;
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}
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return mTouchListener != null && mTouchListener.onTouch(view, event);
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}
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/**
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* {@link TextWatcher}
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*/
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@Override
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public void onTextChanged(CharSequence s, int start, int before, int count) {
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if (isFocused()) {
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setDrawableVisible(s.length() > 0);
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}
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}
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@Override
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public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
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@Override
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public void afterTextChanged(Editable s) {}
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}
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