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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.ui.speedSearch;
import com.intellij.psi.codeStyle.NameUtil;
import com.intellij.util.text.Matcher;
import java.awt.event.KeyEvent;
public class SpeedSearch {
private String myString = "";
private boolean myEnabled;
private Matcher myMatcher;
public void type(String letter) {
updatePattern(myString + letter);
}
public void backspace() {
if (myString.length() > 0) {
updatePattern(myString.substring(0, myString.length() - 1));
}
}
public boolean shouldBeShowing(String string) {
return string == null ||
myString.length() == 0 || (myMatcher != null && myMatcher.matches(string));
}
public void process(KeyEvent e) {
String old = myString;
if (e.isConsumed()) return;
if (e.getKeyCode() == KeyEvent.VK_BACK_SPACE) {
backspace();
e.consume();
}
else if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
if (isHoldingFilter()) {
updatePattern("");
e.consume();
}
}
else {
final char ch = e.getKeyChar();
if (Character.isLetterOrDigit(ch) || ch == ' ' || ch == '*' || ch == '_' || ch == '-' || ch == '"' || ch == '\'' || ch == '/' || ch == '.') {
type(Character.toString(ch));
e.consume();
}
}
if (!old.equalsIgnoreCase(myString)) {
update();
}
}
public void update() {
}
public void noHits() {
}
public boolean isHoldingFilter() {
return myEnabled && myString.length() > 0;
}
public void setEnabled(boolean enabled) {
myEnabled = enabled;
}
public void reset() {
if (isHoldingFilter()) {
updatePattern("");
}
if (myEnabled) {
update();
}
}
public String getFilter() {
return myString;
}
public void updatePattern(final String string) {
myString = string;
try {
myMatcher = NameUtil.buildMatcher("*" + string, 0, true, false);
}
catch (Exception e) {
myMatcher = null;
}
}
}
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