/*
* Copyright 2000-2013 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.find.editorHeaderActions;
import com.intellij.featureStatistics.FeatureUsageTracker;
import com.intellij.openapi.actionSystem.*;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.colors.EditorFontType;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.codeStyle.NameUtil;
import com.intellij.psi.impl.cache.impl.id.IdTableBuilding;
import com.intellij.ui.JBColor;
import com.intellij.ui.components.JBList;
import com.intellij.util.ArrayUtil;
import com.intellij.util.text.Matcher;
import com.intellij.util.ui.GraphicsUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import consulo.annotations.RequiredDispatchThread;
import javax.swing.*;
import javax.swing.text.JTextComponent;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
public class VariantsCompletionAction extends AnAction {
private final JTextComponent myTextField;
public VariantsCompletionAction(JTextComponent textField) {
myTextField = textField;
final AnAction action = ActionManager.getInstance().getAction(IdeActions.ACTION_CODE_COMPLETION);
if (action != null) {
registerCustomShortcutSet(action.getShortcutSet(), myTextField);
}
}
@RequiredDispatchThread
@Override
public void actionPerformed(@NotNull final AnActionEvent e) {
final Editor editor = e.getData(CommonDataKeys.EDITOR_EVEN_IF_INACTIVE);
if (editor == null) return;
final String prefix = myTextField.getText().substring(0, myTextField.getCaretPosition());
if (StringUtil.isEmpty(prefix)) return;
final String[] array = calcWords(prefix, editor);
if (array.length == 0) {
return;
}
FeatureUsageTracker.getInstance().triggerFeatureUsed("find.completion");
final JList list = new JBList(array) {
@Override
protected void paintComponent(final Graphics g) {
GraphicsUtil.setupAntialiasing(g);
super.paintComponent(g);
}
};
list.setBackground(new JBColor(new Color(235, 244, 254), new Color(0x4C4F51)));
list.setFont(editor.getColorsScheme().getFont(EditorFontType.PLAIN));
Utils.showCompletionPopup(
e.getInputEvent() instanceof MouseEvent ? myTextField: null,
list, null, myTextField, null);
}
private static String[] calcWords(final String prefix, Editor editor) {
final Matcher matcher = NameUtil.buildMatcher(prefix, 0, true, true);
final Set<String> words = new HashSet<String>();
CharSequence chars = editor.getDocument().getCharsSequence();
IdTableBuilding.scanWords(new IdTableBuilding.ScanWordProcessor() {
@Override
public void run(final CharSequence chars, @Nullable char[] charsArray, final int start, final int end) {
final String word = chars.subSequence(start, end).toString();
if (matcher.matches(word)) {
words.add(word);
}
}
}, chars, 0, chars.length());
ArrayList<String> sortedWords = new ArrayList<String>(words);
Collections.sort(sortedWords);
return ArrayUtil.toStringArray(sortedWords);
}
}