processing/java/src/processing/mode/java/ErrorBar.java at master · lwkobe/processing · GitHub

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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */

Part of the Processing project - http://processing.org

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.Graphics2D;

import java.awt.RenderingHints;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.MouseMotionAdapter;

import java.util.ArrayList;

import java.util.List;

import javax.swing.JPanel;

import javax.swing.SwingWorker;

import javax.swing.text.BadLocationException;

import processing.app.Base;

import processing.app.SketchCode;

import processing.mode.java.pdex.ErrorCheckerService;

import processing.mode.java.pdex.ErrorMarker;

import processing.mode.java.pdex.Problem;

import processing.app.Language;

/**

* The bar on the left of the text area which displays all errors as rectangles. <br>

* <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

* @author Manindra Moharana <me@mkmoharana.com>

public class ErrorBar extends JPanel {

/**

* Preferred height of the component

protected int preferredHeight;

/**

* Preferred height of the component

protected int preferredWidth = 12;

/**

* Height of marker

public static final int errorMarkerHeight = 4;

/**

* Color of Error Marker

public Color errorColor; // = new Color(0xED2630);

/**

* Color of Warning Marker

public Color warningColor; // = new Color(0xFFC30E);

/**

* Background color of the component

public Color backgroundColor; // = new Color(0x2C343D);

/**

* JavaEditor instance

protected JavaEditor editor;

/**

* ErrorCheckerService instance

protected ErrorCheckerService errorCheckerService;

/**

* Stores error markers displayed PER TAB along the error bar.

protected List<ErrorMarker> errorPoints = new ArrayList<ErrorMarker>();

/**

* Stores previous list of error markers.

protected ArrayList<ErrorMarker> errorPointsOld = new ArrayList<ErrorMarker>();

public void paintComponent(Graphics g) {

Graphics2D g2d = (Graphics2D) g;

g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

RenderingHints.VALUE_ANTIALIAS_ON);

g.setColor(backgroundColor);

g.fillRect(0, 0, getWidth(), getHeight());

for (ErrorMarker emarker : errorPoints) {

if (emarker.getType() == ErrorMarker.Error) {

g.setColor(errorColor);

} else {

g.setColor(warningColor);

}

g.fillRect(2, emarker.getY(), (getWidth() - 3), errorMarkerHeight);

}

public Dimension getPreferredSize() {

return new Dimension(preferredWidth, preferredHeight);

}

public Dimension getMinimumSize() {

return getPreferredSize();

}

public ErrorBar(JavaEditor editor, int height, JavaMode mode) {

this.editor = editor;

this.preferredHeight = height;

this.errorCheckerService = editor.errorCheckerService;

errorColor = mode.getColor("errorbar.errorcolor"); //, errorColor);

warningColor = mode.getColor("errorbar.warningcolor"); //, warningColor);

//backgroundColor = mode.getColor("errorbar.backgroundcolor"); //, backgroundColor);

backgroundColor = mode.getColor("gutter.bgcolor");

addListeners();

}

/**

* Update error markers in the error bar.

* @param problems

* - List of problems.

synchronized public void updateErrorPoints(final List<Problem> problems) {

// NOTE TO SELF: ErrorMarkers are calculated for the present tab only

// Error Marker index in the arraylist is LOCALIZED for current tab.

// Also, need to do the update in the UI thread via SwingWorker to prevent

// concurrency issues.

final int fheight = this.getHeight();

SwingWorker<Object, Object> worker = new SwingWorker<Object, Object>() {

protected Object doInBackground() throws Exception {

SketchCode sc = editor.getSketch().getCurrentCode();

int totalLines = 0, currentTab = editor.getSketch()

.getCurrentCodeIndex();

try {

totalLines = Base.countLines(sc.getDocument()

.getText(0, sc.getDocument().getLength())) + 1;

} catch (BadLocationException e) {

e.printStackTrace();

}

// System.out.println("Total lines: " + totalLines);

synchronized (errorPoints) {

errorPointsOld.clear();

for (ErrorMarker marker : errorPoints) {

errorPointsOld.add(marker);

}

errorPoints.clear();

// 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) {

// Ratio of error line to total lines

float y = (problem.getLineNumber() + 1)

/ ((float) totalLines);

// Ratio multiplied by height of the error bar

y *= fheight - 15; // -15 is just a vertical offset

errorPoints

.add(new ErrorMarker(problem, (int) y,

problem.isError() ? ErrorMarker.Error

: ErrorMarker.Warning));

// System.out.println("Y: " + y);

}

return null;

}

protected void done() {

repaint();

}

};

try {

worker.execute(); // I eat concurrency bugs for breakfast.

} catch (Exception exp) {

System.out.println("Errorbar update markers is slacking."

+ exp.getMessage());

// e.printStackTrace();

}

/**

* Check if new errors have popped up in the sketch since the last check

* @return true - if errors have changed

public boolean errorPointsChanged() {

if (errorPointsOld.size() != errorPoints.size()) {

editor.getTextArea().repaint();

// System.out.println("2 Repaint " + System.currentTimeMillis());

return true;

}

else {

for (int i = 0; i < errorPoints.size(); i++) {

if (errorPoints.get(i).getY() != errorPointsOld.get(i).getY()) {

editor.getTextArea().repaint();

// System.out.println("3 Repaint " +

// System.currentTimeMillis());

return true;

}

return false;

}

/**

* Add various mouse listeners.

protected void addListeners() {

addMouseListener(new MouseAdapter() {

// Find out which error/warning the user has clicked

// and then scroll to that

@Override

public void mouseClicked(final MouseEvent e) {

SwingWorker<Object, Object> worker = new SwingWorker<Object, Object>() {

protected Object doInBackground() throws Exception {

for (ErrorMarker eMarker : errorPoints) {

// -2 and +2 are extra allowance, clicks in the

// vicinity of the markers register that way

if (e.getY() >= eMarker.getY() - 2

&& e.getY() <= eMarker.getY() + 2 + errorMarkerHeight) {

errorCheckerService.scrollToErrorLine(eMarker.getProblem());

return null;

}

return null;

}

};

try {

worker.execute();

} catch (Exception exp) {

System.out.println("Errorbar mouseClicked is slacking."

+ exp.getMessage());

// e.printStackTrace();

}

});

// Tooltip on hover

addMouseMotionListener(new MouseMotionAdapter() {

public void mouseMoved(final MouseEvent evt) {

SwingWorker<Object, Object> worker = new SwingWorker<Object, Object>() {

protected Object doInBackground() throws Exception {

for (ErrorMarker eMarker : errorPoints) {

if (evt.getY() >= eMarker.getY() - 2 &&

evt.getY() <= eMarker.getY() + 2 + errorMarkerHeight) {

Problem p = eMarker.getProblem();

String msg = ((p.isError()

? Language.text("editor.status.error")

: Language.text("editor.status.warning")) + ": "

+ p.getMessage());

setToolTipText(msg);

setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));

break;

}

return null;

}

};

try {

worker.execute();

} catch (Exception exp) {

System.out

.println("Errorbar mousemoved Worker is slacking."

+ exp.getMessage());

// e.printStackTrace();

}

});

}

processing/java/src/processing/mode/java/ErrorBar.java at master · lwkobe/processing · GitHub

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