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Copy pathMarkerColumn.java
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245 lines (198 loc) · 6.94 KB
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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
Part of the Processing project - http://processing.org
Copyright (c) 2012-15 The Processing Foundation
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package processing.mode.java;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.swing.JPanel;
import javax.swing.SwingWorker;
import javax.swing.text.BadLocationException;
import processing.app.Mode;
import processing.app.Sketch;
import processing.app.SketchCode;
import processing.app.Util;
import processing.app.ui.Editor;
import processing.core.PApplet;
import processing.mode.java.pdex.LineMarker;
import processing.mode.java.pdex.Problem;
/**
* Implements the column to the right of the editor window that displays ticks
* for errors and warnings.
* <br>
* All errors and warnings of a sketch are drawn on the bar, clicking on one,
* scrolls to the tab and location. Error messages displayed on hover. Markers
* are not in sync with the error line. Similar to Eclipse's right error bar
* which displays the overall errors in a document
*/
public class MarkerColumn extends JPanel {
protected JavaEditor editor;
// static final int WIDE = 12;
private Color errorColor;
private Color warningColor;
// Stores error markers displayed PER TAB along the error bar.
private List<LineMarker> errorPoints =
Collections.synchronizedList(new ArrayList<LineMarker>());
public MarkerColumn(JavaEditor editor, int height) {
this.editor = editor;
Mode mode = editor.getMode();
errorColor = mode.getColor("editor.column.error.color");
warningColor = mode.getColor("editor.column.warning.color");
addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
scrollToMarkerAt(e.getY());
}
});
addMouseMotionListener(new MouseMotionAdapter() {
public void mouseMoved(final MouseEvent e) {
showMarkerHover(e.getY());
}
});
}
@Override
public void repaint() {
recalculateMarkerPositions();
super.repaint();
}
public void paintComponent(Graphics g) {
g.drawImage(editor.getJavaTextArea().getGutterGradient(),
0, 0, getWidth(), getHeight(), this);
for (LineMarker m : errorPoints) {
if (m.getType() == LineMarker.ERROR) {
g.setColor(errorColor);
} else {
g.setColor(warningColor);
}
g.drawLine(2, m.getY(), getWidth() - 2, m.getY());
}
}
public List<LineMarker> getErrorPoints() {
return errorPoints;
}
synchronized public void updateErrorPoints(final List<Problem> problems) {
// NOTE: ErrorMarkers are calculated for the present tab only Error Marker
// index in the arraylist is LOCALIZED for current tab. Also, update is in
// the UI thread via SwingWorker to prevent concurrency issues. [Manindra]
try {
new SwingWorker() {
protected Object doInBackground() throws Exception {
Sketch sketch = editor.getSketch();
int currentTab = sketch.getCurrentCodeIndex();
errorPoints = new ArrayList<>();
// Each problem.getSourceLine() will have an extra line added because
// of class declaration in the beginning as well as default imports
synchronized (problems) {
for (Problem problem : problems) {
if (problem.getTabIndex() == currentTab) {
errorPoints.add(new LineMarker(problem, problem.isError()));
}
}
}
recalculateMarkerPositions();
return null;
}
protected void done() {
repaint();
editor.getErrorChecker().updateEditorStatus();
}
}.execute();
} catch (Exception ex) {
ex.printStackTrace();
}
}
/** Find out which error/warning the user has clicked and scroll to it */
private void scrollToMarkerAt(final int y) {
try {
LineMarker m = findClosestMarker(y);
if (m != null) {
editor.getErrorChecker().scrollToErrorLine(m.getProblem());
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
/*
@Override
public JToolTip createToolTip() {
return new ErrorToolTip(editor.getMode(), this);
}
*/
/** Show tooltip on hover. */
private void showMarkerHover(final int y) {
try {
LineMarker m = findClosestMarker(y);
if (m != null) {
Problem p = m.getProblem();
// String kind = p.isError() ?
// Language.text("editor.status.error") :
// Language.text("editor.status.warning");
// setToolTipText(kind + ": " + p.getMessage());
editor.statusToolTip(MarkerColumn.this, p.getMessage(), p.isError());
setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
private void recalculateMarkerPositions() {
List<LineMarker> errorPoints = getErrorPoints();
if (errorPoints != null && errorPoints.size() > 0) {
Sketch sketch = editor.getSketch();
SketchCode code = sketch.getCurrentCode();
int totalLines;
try {
totalLines = Util.countLines(code.getDocumentText());
} catch (BadLocationException e) {
e.printStackTrace();
totalLines = 1; // do not divide by zero
}
int visibleLines = editor.getTextArea().getVisibleLines();
totalLines = PApplet.max(totalLines, visibleLines);
for (LineMarker m : errorPoints) {
// Ratio of error line to total lines
float y = (m.getLineNumber() + 1) / ((float) totalLines);
// Ratio multiplied by height of the error bar
y *= getHeight();
y -= 15; // -15 is just a vertical offset
m.setY((int) y);
}
}
}
private LineMarker findClosestMarker(final int y) {
LineMarker closest = null;
int closestDist = Integer.MAX_VALUE;
for (LineMarker m : errorPoints) {
int dist = Math.abs(y - m.getY());
if (dist < 3 && dist < closestDist) {
closest = m;
closestDist = dist;
}
}
return closest;
}
public Dimension getPreferredSize() {
return new Dimension(Editor.RIGHT_GUTTER, super.getPreferredSize().height);
}
public Dimension getMinimumSize() {
return new Dimension(Editor.RIGHT_GUTTER, super.getMinimumSize().height);
}
}