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@ -14,38 +14,44 @@
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* limitations under the License.
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* limitations under the License.
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*/
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*/
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package net.micode.notes.ui;
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package net.micode.notes.ui;
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import android.content.Context;
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import android.content.Context;
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import android.graphics.Rect;
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import android.graphics.Rect;
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import android.text.Layout;
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import android.text.Layout;
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import android.text.Selection;
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import android.text.Selection;
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import android.text.Spanned;
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import android.text.Spanned;
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import android.text.TextUtils;
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import android.text.TextUtils;
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import android.text.style.URLSpan;
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import android.text.style.URLSpan;
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import android.util.AttributeSet;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.util.Log;
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import android.view.ContextMenu;
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import android.view.ContextMenu;
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import android.view.KeyEvent;
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import android.view.KeyEvent;
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import android.view.MenuItem;
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import android.view.MenuItem;
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import android.view.MenuItem.OnMenuItemClickListener;
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import android.view.MenuItem.OnMenuItemClickListener;
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import android.view.MotionEvent;
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import android.view.MotionEvent;
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import android.widget.EditText;
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import android.widget.EditText;
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import net.micode.notes.R;
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import net.micode.notes.R;
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import java.util.HashMap;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Map;
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public class NoteEditText extends EditText {
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/**
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* 自定义EditText组件,用于小米便签应用中的文本编辑功能
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* 支持链接识别、回车键和删除键的特殊处理以及上下文菜单定制
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*/
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public class NoteEditText extends EditText {
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private static final String TAG = "NoteEditText";
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private static final String TAG = "NoteEditText";
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private int mIndex;
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private int mIndex; // 当前编辑框在便签中的索引位置
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private int mSelectionStartBeforeDelete;
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private int mSelectionStartBeforeDelete; // 删除操作前的光标位置
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// 支持的链接协议
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private static final String SCHEME_TEL = "tel:" ;
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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_HTTP = "http:" ;
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private static final String SCHEME_EMAIL = "mailto:" ;
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private static final String SCHEME_EMAIL = "mailto:" ;
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// 协议与菜单项资源ID的映射
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private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
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private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
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static {
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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_TEL, R.string.note_link_tel);
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@ -54,56 +60,89 @@ public class NoteEditText extends EditText {
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}
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}
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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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* 文本视图变化监听器接口
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* 用于与NoteEditActivity通信,处理编辑框的添加、删除和文本变化事件
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*/
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*/
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public interface OnTextViewChangeListener {
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public interface OnTextViewChangeListener {
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/**
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/**
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* Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
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* 当按下删除键且文本为空时,删除当前编辑框
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* and the text is null
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* @param index 当前编辑框的索引
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* @param text 当前编辑框的文本内容
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*/
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*/
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void onEditTextDelete(int index, String text);
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void onEditTextDelete(int index, String text);
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/**
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/**
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* Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
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* 当按下回车键时,在当前编辑框后添加新的编辑框
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* happen
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* @param index 新编辑框的索引位置
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* @param text 当前编辑框中回车键后的剩余文本
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*/
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*/
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void onEditTextEnter(int index, String text);
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void onEditTextEnter(int index, String text);
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/**
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/**
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* Hide or show item option when text change
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* 当文本内容变化时,隐藏或显示菜单项
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* @param index 当前编辑框的索引
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* @param hasText 是否有文本内容
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*/
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*/
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void onTextChange(int index, boolean hasText);
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void onTextChange(int index, boolean hasText);
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}
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}
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private OnTextViewChangeListener mOnTextViewChangeListener;
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private OnTextViewChangeListener mOnTextViewChangeListener; // 文本变化监听器
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/**
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* 构造函数,用于在代码中创建NoteEditText实例
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* @param context 应用上下文
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*/
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public NoteEditText(Context context) {
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public NoteEditText(Context context) {
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super(context, null);
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super(context, null);
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mIndex = 0;
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mIndex = 0;
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}
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}
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/**
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* 设置编辑框的索引位置
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* @param index 索引值
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*/
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public void setIndex(int index) {
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public void setIndex(int index) {
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mIndex = index;
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mIndex = index;
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}
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}
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/**
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* 设置文本变化监听器
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* @param listener 实现了OnTextViewChangeListener接口的监听器
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*/
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public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
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public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
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mOnTextViewChangeListener = listener;
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mOnTextViewChangeListener = listener;
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}
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}
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/**
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* 构造函数,用于在XML布局文件中创建NoteEditText实例
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* @param context 应用上下文
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* @param attrs 属性集合
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*/
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public NoteEditText(Context context, AttributeSet attrs) {
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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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super(context, attrs, android.R.attr.editTextStyle);
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}
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}
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/**
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* 构造函数,使用指定的样式资源
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* @param context 应用上下文
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* @param attrs 属性集合
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* @param defStyle 样式资源ID
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*/
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public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
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public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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super(context, attrs, defStyle);
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// TODO Auto-generated constructor stub
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// TODO Auto-generated constructor stub
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}
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}
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/**
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* 处理触摸事件,确保点击位置能正确定位到文本
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* @param event 触摸事件
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* @return 是否处理了该事件
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*/
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@Override
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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public boolean onTouchEvent(MotionEvent event) {
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switch (event.getAction()) {
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switch (event.getAction()) {
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case MotionEvent.ACTION_DOWN:
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case MotionEvent.ACTION_DOWN:
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// 计算触摸点在文本中的位置并设置光标
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int x = (int) event.getX();
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int x = (int) event.getX();
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int y = (int) event.getY();
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int y = (int) event.getY();
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x -= getTotalPaddingLeft();
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x -= getTotalPaddingLeft();
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@ -121,15 +160,23 @@ public class NoteEditText extends EditText {
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return super.onTouchEvent(event);
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return super.onTouchEvent(event);
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}
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}
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/**
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* 处理按键按下事件
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* @param keyCode 按键码
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* @param event 按键事件
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* @return 是否处理了该事件
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*/
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@Override
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@Override
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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switch (keyCode) {
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switch (keyCode) {
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case KeyEvent.KEYCODE_ENTER:
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case KeyEvent.KEYCODE_ENTER:
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// 如果设置了监听器,让监听器处理回车键事件
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if (mOnTextViewChangeListener != null) {
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if (mOnTextViewChangeListener != null) {
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return false;
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return false;
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}
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}
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break;
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break;
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case KeyEvent.KEYCODE_DEL:
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case KeyEvent.KEYCODE_DEL:
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// 记录删除操作前的光标位置
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mSelectionStartBeforeDelete = getSelectionStart();
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mSelectionStartBeforeDelete = getSelectionStart();
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break;
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break;
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default:
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default:
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@ -138,10 +185,17 @@ public class NoteEditText extends EditText {
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return super.onKeyDown(keyCode, event);
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return super.onKeyDown(keyCode, event);
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}
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}
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/**
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* 处理按键释放事件
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* @param keyCode 按键码
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* @param event 按键事件
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* @return 是否处理了该事件
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*/
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@Override
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@Override
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public boolean onKeyUp(int keyCode, KeyEvent event) {
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public boolean onKeyUp(int keyCode, KeyEvent event) {
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switch(keyCode) {
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switch(keyCode) {
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case KeyEvent.KEYCODE_DEL:
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case KeyEvent.KEYCODE_DEL:
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// 处理删除键事件:如果光标在文本开头且不是第一个编辑框,则删除当前编辑框
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if (mOnTextViewChangeListener != null) {
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if (mOnTextViewChangeListener != null) {
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if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
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if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
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mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
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mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
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@ -152,6 +206,7 @@ public class NoteEditText extends EditText {
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}
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}
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break;
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break;
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case KeyEvent.KEYCODE_ENTER:
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case KeyEvent.KEYCODE_ENTER:
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// 处理回车键事件:将文本分割并在当前编辑框后添加新的编辑框
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if (mOnTextViewChangeListener != null) {
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if (mOnTextViewChangeListener != null) {
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int selectionStart = getSelectionStart();
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int selectionStart = getSelectionStart();
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String text = getText().subSequence(selectionStart, length()).toString();
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String text = getText().subSequence(selectionStart, length()).toString();
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@ -167,8 +222,15 @@ public class NoteEditText extends EditText {
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return super.onKeyUp(keyCode, event);
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return super.onKeyUp(keyCode, event);
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}
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}
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/**
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* 焦点变化时的回调方法
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* @param focused 是否获得焦点
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* @param direction 焦点移动方向
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* @param previouslyFocusedRect 之前焦点所在的矩形区域
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*/
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@Override
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@Override
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protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
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protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
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// 通知监听器文本内容状态变化
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if (mOnTextViewChangeListener != null) {
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if (mOnTextViewChangeListener != null) {
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if (!focused && TextUtils.isEmpty(getText())) {
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if (!focused && TextUtils.isEmpty(getText())) {
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mOnTextViewChangeListener.onTextChange(mIndex, false);
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mOnTextViewChangeListener.onTextChange(mIndex, false);
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@ -179,8 +241,13 @@ public class NoteEditText extends EditText {
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super.onFocusChanged(focused, direction, previouslyFocusedRect);
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super.onFocusChanged(focused, direction, previouslyFocusedRect);
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}
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}
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/**
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* 创建上下文菜单时的回调方法
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* @param menu 上下文菜单
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*/
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@Override
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@Override
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protected void onCreateContextMenu(ContextMenu menu) {
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protected void onCreateContextMenu(ContextMenu menu) {
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// 检查选中文本中是否包含链接,如果包含则添加对应的菜单项
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if (getText() instanceof Spanned) {
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if (getText() instanceof Spanned) {
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int selStart = getSelectionStart();
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int selStart = getSelectionStart();
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int selEnd = getSelectionEnd();
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int selEnd = getSelectionEnd();
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@ -191,6 +258,7 @@ public class NoteEditText extends EditText {
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final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
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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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if (urls.length == 1) {
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int defaultResId = 0;
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int defaultResId = 0;
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// 根据链接协议选择对应的菜单项文本
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for(String schema: sSchemaActionResMap.keySet()) {
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for(String schema: sSchemaActionResMap.keySet()) {
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if(urls[0].getURL().indexOf(schema) >= 0) {
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if(urls[0].getURL().indexOf(schema) >= 0) {
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defaultResId = sSchemaActionResMap.get(schema);
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defaultResId = sSchemaActionResMap.get(schema);
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@ -202,10 +270,11 @@ public class NoteEditText extends EditText {
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defaultResId = R.string.note_link_other;
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defaultResId = R.string.note_link_other;
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}
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}
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// 添加菜单项并设置点击事件
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menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
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menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
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new OnMenuItemClickListener() {
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new OnMenuItemClickListener() {
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public boolean onMenuItemClick(MenuItem item) {
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public boolean onMenuItemClick(MenuItem item) {
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// goto a new intent
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// 打开链接
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urls[0].onClick(NoteEditText.this);
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urls[0].onClick(NoteEditText.this);
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return true;
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return true;
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}
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}
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@ -214,4 +283,4 @@ public class NoteEditText extends EditText {
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}
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}
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super.onCreateContextMenu(menu);
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super.onCreateContextMenu(menu);
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}
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}
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}
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}
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