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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.netbeans.modules.editor.actions;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.util.ArrayList;
import java.util.List;
import javax.swing.text.BadLocationException;
import javax.swing.text.Caret;
import javax.swing.text.JTextComponent;
import javax.swing.text.Position;
import org.netbeans.api.editor.EditorActionNames;
import org.netbeans.api.editor.EditorActionRegistration;
import org.netbeans.api.editor.EditorActionRegistrations;
import org.netbeans.api.editor.caret.EditorCaret;
import org.netbeans.api.editor.caret.CaretMoveContext;
import org.netbeans.editor.BaseDocument;
import org.netbeans.editor.Utilities;
import org.netbeans.spi.editor.AbstractEditorAction;
import org.netbeans.spi.editor.caret.CaretMoveHandler;
/**
*
* @author Ralph Ruijs
*/
@EditorActionRegistrations({
@EditorActionRegistration(name = EditorActionNames.addCaretUp, category = "edit.multicaret"),
@EditorActionRegistration(name = EditorActionNames.addCaretDown, category = "edit.multicaret")
})
public class AddCaretAction extends AbstractEditorAction {
@Override
protected void actionPerformed(ActionEvent evt, final JTextComponent target) {
if (target != null) {
Caret caret = target.getCaret();
if (caret != null && caret instanceof EditorCaret) {
final EditorCaret editorCaret = (EditorCaret) caret;
final BaseDocument doc = (BaseDocument) target.getDocument();
final boolean upAction = EditorActionNames.addCaretUp.equals(actionName());
doc.runAtomicAsUser(new Runnable() {
@Override
public void run() {
final List<Position> dotAndMarks = new ArrayList<>(editorCaret.getCarets().size() << 1);
final List<Position.Bias> dotAndMarkBiases = new ArrayList<>(editorCaret.getCarets().size() << 1);
editorCaret.moveCarets(new CaretMoveHandler() {
@Override
public void moveCarets(CaretMoveContext context) {
for (org.netbeans.api.editor.caret.CaretInfo caretInfo : context.getOriginalCarets()) {
try {
int dot = caretInfo.getDot();
Position.Bias dotBias = caretInfo.getDotBias();
Point p = caretInfo.getMagicCaretPosition();
if (p == null) {
Rectangle r = target.getUI().modelToView(target, dot, dotBias);
if (r != null) {
p = new Point(r.x, r.y);
context.setMagicCaretPosition(caretInfo, p);
} else {
return; // model to view failed
}
}
try {
dot = upAction
? Utilities.getPositionAbove(target, dot, p.x)
: Utilities.getPositionBelow(target, dot, p.x);
// TODO compute proper bias by using getNextVisualPositionFrom() either in target.navifilter or target.ui
Position dotPos = doc.createPosition(dot);
dotAndMarks.add(dotPos);
dotAndMarks.add(dotPos);
dotAndMarkBiases.add(dotBias);
dotAndMarkBiases.add(dotBias);
} catch (BadLocationException e) {
// the position stays the same
}
} catch (BadLocationException ex) {
target.getToolkit().beep();
}
}
}
});
editorCaret.addCarets(dotAndMarks, dotAndMarkBiases);
}
});
}
}
}
}