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GeezerVison is showing github.com — Android-AutoCompleteEditText/AutoCompleteEditText.java at master · HackPlan/Android-AutoCompleteEditText

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AutoCompleteEditText.java

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package im.dacer;
import android.content.Context;
import android.util.AttributeSet;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Created by Dacer on 5/23/14.
* Show a drop-down list after input a symbol.
*/
public class AutoCompleteEditText extends AutoCompleteTextView {
private ArrayAdapter<String> adapter;
private String startAtSymbol = "#";
public AutoCompleteEditText(Context context){
this(context, null);
}
public AutoCompleteEditText(Context context, AttributeSet attrs){
super(context,attrs);
init();
}
public AutoCompleteEditText(Context context, AttributeSet attrs, int defStyle){
super(context, attrs, defStyle);
init();
}
private void init(){
adapter = new ArrayAdapter<String>(getContext(),
android.R.layout.simple_dropdown_item_1line, new ArrayList<String>());
setAdapter(adapter);
setDropDownWidth(WindowManager.LayoutParams.WRAP_CONTENT);
}
/**
*
* @param symbol default is #
*/
public void setStartAtSymbol(String symbol){
startAtSymbol = symbol;
}
/**
*
* @param dataList The data must start with the symbol
*/
public void setAutoCompleteList(String[] dataList){
adapter = new ArrayAdapter<String>(getContext(),
android.R.layout.simple_dropdown_item_1line, dataList);
setAdapter(adapter);
}
@Override
public boolean enoughToFilter() {
if(getText() != null){
return getText().length() != 0;
}
return true;
}
@Override
protected void performFiltering(CharSequence text, int keyCode){
String beforeCursor = getText().toString().substring(0, getSelectionStart());
Pattern pattern = Pattern.compile(getRegularExpression());
Matcher matcher = pattern.matcher(beforeCursor);
if (matcher.find()) {
text = matcher.group(0);;
}
super.performFiltering(text, keyCode);
}
@Override
protected void replaceText(CharSequence text){
String beforeCursor = getText().toString().substring(0, getSelectionStart());
String afterCursor = getText().toString().substring(getSelectionStart());
Pattern pattern = Pattern.compile("#\\S*");
Matcher matcher = pattern.matcher(beforeCursor);
StringBuffer sb = new StringBuffer();
int matcherStart = 0;
while (matcher.find()) {
int curPos = getSelectionStart();
if(curPos > matcher.start() &&
curPos <= matcher.end()){
matcherStart = matcher.start();
matcher.appendReplacement(sb, text.toString()+" ");
}
}
matcher.appendTail(sb);
setText(sb.toString()+afterCursor);
setSelection(matcherStart + text.length()+1);
}
private String getRegularExpression(){
return startAtSymbol+"\\S*\\z";
}
}
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