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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.ui;
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import android.content.Context;
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import android.graphics.Rect;
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import android.text.Layout;
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import android.text.Selection;
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import android.text.Spanned;
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import android.text.TextUtils;
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import android.text.style.URLSpan;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.ContextMenu;
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import android.view.KeyEvent;
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import android.view.MenuItem;
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import android.view.MenuItem.OnMenuItemClickListener;
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import android.view.MotionEvent;
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import android.widget.EditText;
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import net.micode.notes.R;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @Package: net.micode.notes.ui
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* @ClassName: NoteEditText
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* @Description:
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* @Author: YangYizhe
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* @CreateDate: 12/21/2023 12:38 AM
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* @Version: 1.0
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*/
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public class NoteEditText extends EditText {
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//常量标识
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private static final String TAG = "NoteEditText";
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//声明整型变量，文本索引
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private int mIndex;
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//声明整型变量
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private int mSelectionStartBeforeDelete;
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//声明字符串常量，标志电话、网址、邮件
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private static final String SCHEME_TEL = "tel:" ;
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private static final String SCHEME_HTTP = "http:" ;
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private static final String SCHEME_EMAIL = "mailto:" ;
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//设置映射，将文本内容（电话、网址、邮件）做链接处理
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private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
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static {
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sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel);
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sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web);
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sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email);
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}
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/**
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* Call by the {@link NoteEditActivity} to delete or add edit text
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* 该接口用于实现对TextView组件中的文字信息进行修改
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*/
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public interface OnTextViewChangeListener {
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/**
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* Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
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* and the text is null
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* 当delete键按下时删除当前编辑的文字块
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*/
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void onEditTextDelete(int index, String text);
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/**
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* Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
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* happen
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* 当enter键按下时添加一个文字编辑块
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*/
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void onEditTextEnter(int index, String text);
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/**
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* Hide or show item option when text change
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* 当文字发生变化时隐藏或者显示设置
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*/
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void onTextChange(int index, boolean hasText);
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}
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//声明文本视图变化监听器
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private OnTextViewChangeListener mOnTextViewChangeListener;
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/**
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* 构造方法，实例化NoteEditText
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*/
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public NoteEditText(Context context) {
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super(context, null);
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mIndex = 0;
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}
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//设置索引号
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public void setIndex(int index) {
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mIndex = index;
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}
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/**
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* 设置文本视图变化监听器
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*/
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public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
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mOnTextViewChangeListener = listener;
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}
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/**
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* 构造方法，是由参数集（文本编辑风格）实例化NoteEditText
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*/
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public NoteEditText(Context context, AttributeSet attrs) {
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super(context, attrs, android.R.attr.editTextStyle);
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}
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/**
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* 构造方法，是由参数集（文本编辑风格、定义风格）实例化NoteEditText
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*/
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public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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// TODO Auto-generated constructor stub
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}
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/**
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* @method onTouchEvent
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* @description 处理触摸事件，根据触摸点的位置设置光标的位置
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* @date: 12/21/2023 12:41 AM
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* @author: YangYizhe
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* @param
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* @return
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*/
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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switch (event.getAction()) {
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case MotionEvent.ACTION_DOWN:
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int x = (int) event.getX();
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int y = (int) event.getY();
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x -= getTotalPaddingLeft();
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y -= getTotalPaddingTop();
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x += getScrollX();
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y += getScrollY();
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Layout layout = getLayout();
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int line = layout.getLineForVertical(y);
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int off = layout.getOffsetForHorizontal(line, x);
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Selection.setSelection(getText(), off);
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break;
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}
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return super.onTouchEvent(event);
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}
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/**
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* @method onKeyDown
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* @description 监听键盘按键按下
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* @date: 12/21/2023 12:40 AM
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* @author: YangYizhe
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* @param keyCode 键盘按键的编码
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* @param event 按键事件
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* @return boolean
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*/
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@Override
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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switch (keyCode) {
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case KeyEvent.KEYCODE_ENTER:
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if (mOnTextViewChangeListener != null) {
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return false;
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}
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break;
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case KeyEvent.KEYCODE_DEL:
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mSelectionStartBeforeDelete = getSelectionStart();
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break;
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default:
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break;
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}
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return super.onKeyDown(keyCode, event);
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}
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/**
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* @method onKeyUp
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* @description 监听按键抬起
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* @date: 12/21/2023 12:39 AM
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* @author: YangYizhe
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* @param keyCode
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* @param event
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*/
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@Override
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public boolean onKeyUp(int keyCode, KeyEvent event) {
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switch(keyCode) {
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case KeyEvent.KEYCODE_DEL:
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if (mOnTextViewChangeListener != null) {
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if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
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mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
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return true;
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}
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} else {
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Log.d(TAG, "OnTextViewChangeListener was not seted");
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}
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break;
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case KeyEvent.KEYCODE_ENTER:
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if (mOnTextViewChangeListener != null) {
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int selectionStart = getSelectionStart();
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String text = getText().subSequence(selectionStart, length()).toString();
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setText(getText().subSequence(0, selectionStart));
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mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
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} else {
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Log.d(TAG, "OnTextViewChangeListener was not seted");
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}
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break;
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default:
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break;
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}
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return super.onKeyUp(keyCode, event);
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}
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/**
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* @method onFocusChanged
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* @description 处理当前视图下的焦点改变事件
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* @date: 12/21/2023 12:39 AM
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* @author: YangYizhe
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* @param focused 代表获得或失去焦点
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* @param direction
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* @param previouslyFocusedRect 上一个访问的焦点区域
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*/
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@Override
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protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
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if (mOnTextViewChangeListener != null) {
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if (!focused && TextUtils.isEmpty(getText())) {
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mOnTextViewChangeListener.onTextChange(mIndex, false);
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} else {
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mOnTextViewChangeListener.onTextChange(mIndex, true);
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}
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}
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super.onFocusChanged(focused, direction, previouslyFocusedRect);
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}
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/**
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* @method onCreateContextMenu
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* @description
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* @date: 12/21/2023 12:39 AM
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* @author: YangYizhe
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* @param
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* @return
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*/
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@Override
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protected void onCreateContextMenu(ContextMenu menu) {
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if (getText() instanceof Spanned) {
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int selStart = getSelectionStart();
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int selEnd = getSelectionEnd();
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int min = Math.min(selStart, selEnd);
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int max = Math.max(selStart, selEnd);
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final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
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if (urls.length == 1) {
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int defaultResId = 0;
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for(String schema: sSchemaActionResMap.keySet()) {
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if(urls[0].getURL().indexOf(schema) >= 0) {
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defaultResId = sSchemaActionResMap.get(schema);
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break;
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}
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}
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if (defaultResId == 0) {
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defaultResId = R.string.note_link_other;
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}
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menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
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new OnMenuItemClickListener() {
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public boolean onMenuItemClick(MenuItem item) {
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// goto a new intent
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urls[0].onClick(NoteEditText.this);
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return true;
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}
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});
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}
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}
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super.onCreateContextMenu(menu);
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}
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}
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