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This Java Mode package contains the Java mode for Processing IDE.
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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.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.swing.*;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.table.TableColumn;
import javax.swing.tree.*;
import org.netbeans.swing.outline.*;
import com.sun.jdi.Value;
import processing.app.Language;
import processing.app.Messages;
import processing.app.Mode;
import processing.mode.java.debug.VariableNode;
public class VariableInspector extends JDialog {
// The tray will be placed at this amount from the top of the editor window,
// and extend to this amount from the bottom of the editor window.
static final int VERTICAL_OFFSET = 64;
static final int HORIZONTAL_OFFSET = 16;
static final int DEFAULT_WIDTH = 300;
static final int DEFAULT_HEIGHT = 400;
/// the root node (invisible)
protected DefaultMutableTreeNode rootNode;
/// node for Processing built-in variables
protected DefaultMutableTreeNode builtins;
/// data model for the tree column
protected DefaultTreeModel treeModel;
// private JScrollPane scrollPane;
protected Outline tree;
protected OutlineModel model;
protected List callStack;
/// current local variables
protected List locals;
/// all fields of the current this-object
protected List thisFields;
/// declared i.e. non-inherited fields of this
protected List declaredThisFields;
protected JavaEditor editor;
// protected Debugger dbg;
/// list of expanded tree paths. (using list to maintain the order of expansion)
protected List expandedNodes = new ArrayList<>();
public VariableInspector(final JavaEditor editor) {
// As a JDialog, the menu bar comes from the Editor
super(editor, "Variables");
this.editor = editor;
// Use the small toolbar style (at least on OS X)
// https://developer.apple.com/library/mac/technotes/tn2007/tn2196.html#WINDOWS
getRootPane().putClientProperty("Window.style", "small");
// When clicking this window, keep the focus on the Editor window.
// Slightly awkward on OS X, but less weird than the Editor losing focus?
setFocusableWindowState(false);
//setUndecorated(true);
//editor.addComponentListener(new EditorFollower());
//setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
Box box = Box.createVerticalBox();
// box.add(createToolbar());
box.add(createScrollPane());
getContentPane().add(box);
pack();
int x = editor.getX() + editor.getWidth() + HORIZONTAL_OFFSET;
if (x + getWidth() > getToolkit().getScreenSize().width) {
// If it doesn't fit on screen, place it inside the editor window,
// per the OS rules for window placement
setLocationRelativeTo(editor);
} else {
// If it'll fit, place it to the right of the editor window
setLocation(x, editor.getY() + VERTICAL_OFFSET);
}
/*
bgColor = mode.getColor("buttons.bgcolor");
statusFont = mode.getFont("buttons.status.font");
statusColor = mode.getColor("buttons.status.color");
// modeTitle = mode.getTitle().toUpperCase();
modeTitle = mode.getTitle();
modeTextFont = mode.getFont("mode.button.font");
modeButtonColor = mode.getColor("mode.button.color");
*/
}
/*
Container createToolbar() {
final Mode mode = editor.getMode();
Box box = Box.createHorizontalBox();
continueButton =
new EditorButton(mode, "theme/debug/continue",
Language.text("toolbar.debug.continue")) {
@Override
public void actionPerformed(ActionEvent e) {
Logger.getLogger(VariableInspector.class.getName()).log(Level.INFO, "Invoked 'Continue' toolbar button");
editor.debugger.continueDebug();
}
};
box.add(continueButton);
box.add(Box.createHorizontalStrut(GAP));
stepButton =
new EditorButton(mode, "theme/debug/step",
Language.text("toolbar.debug.step"),
Language.text("toolbar.debug.step_into")) {
@Override
public void actionPerformed(ActionEvent e) {
if (isShiftDown()) {
Logger.getLogger(VariableInspector.class.getName()).log(Level.INFO, "Invoked 'Step Into' toolbar button");
editor.debugger.stepInto();
} else {
Logger.getLogger(VariableInspector.class.getName()).log(Level.INFO, "Invoked 'Step' toolbar button");
editor.debugger.stepOver();
}
}
};
box.add(stepButton);
box.add(Box.createHorizontalStrut(GAP));
breakpointButton =
new EditorButton(mode, "theme/debug/breakpoint",
Language.text("toolbar.debug.toggle_breakpoints")) {
@Override
public void actionPerformed(ActionEvent e) {
Logger.getLogger(VariableInspector.class.getName()).log(Level.INFO, "Invoked 'Toggle Breakpoint' toolbar button");
editor.debugger.toggleBreakpoint();
}
};
box.add(breakpointButton);
box.add(Box.createHorizontalStrut(GAP));
JLabel label = new JLabel();
box.add(label);
continueButton.setRolloverLabel(label);
stepButton.setRolloverLabel(label);
breakpointButton.setRolloverLabel(label);
// the rest is all gaps
box.add(Box.createHorizontalGlue());
box.setBorder(new EmptyBorder(GAP, GAP, GAP, GAP));
// prevent the toolbar from getting taller than its default
box.setMaximumSize(new Dimension(getMaximumSize().width, getPreferredSize().height));
return box;
}
*/
Container createScrollPane() {
JScrollPane scrollPane = new JScrollPane();
tree = new Outline();
scrollPane.setViewportView(tree);
/*
GroupLayout layout = new GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(scrollPane,
GroupLayout.DEFAULT_SIZE,
400, Short.MAX_VALUE)));
layout.setVerticalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(scrollPane,
GroupLayout.Alignment.TRAILING,
GroupLayout.DEFAULT_SIZE,
300, Short.MAX_VALUE)));
pack();
*/
// setup Outline
rootNode = new DefaultMutableTreeNode("root");
builtins = new DefaultMutableTreeNode("Processing");
treeModel = new DefaultTreeModel(rootNode); // model for the tree column
// model for all columns
model =
DefaultOutlineModel.createOutlineModel(treeModel, new VariableRowModel(),
true,
Language.text("debugger.name"));
ExpansionHandler expansionHandler = new ExpansionHandler();
model.getTreePathSupport().addTreeWillExpandListener(expansionHandler);
model.getTreePathSupport().addTreeExpansionListener(expansionHandler);
tree.setModel(model);
tree.setRootVisible(false);
tree.setRenderDataProvider(new OutlineRenderer());
tree.setColumnHidingAllowed(false); // disable visible columns button (shows by default when right scroll bar is visible)
tree.setAutoscrolls(false);
// set custom renderer and editor for value column, since we are using a custom class for values (VariableNode)
TableColumn valueColumn = tree.getColumnModel().getColumn(1);
valueColumn.setCellRenderer(new ValueCellRenderer());
valueColumn.setCellEditor(new ValueCellEditor());
//System.out.println("renderer: " + tree.getDefaultRenderer(String.class).getClass());
//System.out.println("editor: " + tree.getDefaultEditor(String.class).getClass());
callStack = new ArrayList();
locals = new ArrayList();
thisFields = new ArrayList();
declaredThisFields = new ArrayList();
// Remove ugly (and unused) focus border on OS X
scrollPane.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));
scrollPane.setPreferredSize(new Dimension(DEFAULT_WIDTH, DEFAULT_HEIGHT));
return scrollPane;
}
/*
protected void activateContinue() {
}
protected void deactivateContinue() {
}
protected void activateStep() {
}
protected void deactivateStep() {
}
*/
/*
// Keeps the debug window adjacent the editor at all times.
class EditorFollower implements ComponentListener {
@Override
public void componentShown(ComponentEvent e) {
if (editor.isDebuggerEnabled()) {
// updateBounds();
setVisible(true);
}
}
@Override
public void componentHidden(ComponentEvent e) {
if (isVisible()) {
setVisible(false);
}
}
@Override
public void componentResized(ComponentEvent e) {
if (isVisible()) {
updateBounds();
}
}
@Override
public void componentMoved(ComponentEvent e) {
if (isVisible()) {
updateBounds();
}
}
}
private void updateBounds() {
setBounds(editor.getX() + editor.getWidth(),
editor.getY() + VERTICAL_OFFSET,
getPreferredSize().width,
editor.getHeight() - VERTICAL_OFFSET*2);
}
public void setVisible(boolean visible) {
if (visible) {
updateBounds();
}
super.setVisible(visible);
}
*/
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
/**
* Model for a Outline Row (excluding the tree column). Column 0 is "Value".
* Column 1 is "Type". Handles setting and getting values. TODO: Maybe use a
* TableCellRenderer instead of this to also have a different icon based on
* expanded state. See:
* http://kickjava.com/src/org/netbeans/swing/outline/DefaultOutlineCellRenderer.java.htm
*/
protected class VariableRowModel implements RowModel {
final String column0 = Language.text("debugger.value");
final String column1 = Language.text("debugger.type");
final String[] columnNames = { column0, column1 };
final int[] editableTypes = {
VariableNode.TYPE_BOOLEAN,
VariableNode.TYPE_FLOAT,
VariableNode.TYPE_INTEGER,
VariableNode.TYPE_STRING,
VariableNode.TYPE_FLOAT,
VariableNode.TYPE_DOUBLE,
VariableNode.TYPE_LONG,
VariableNode.TYPE_SHORT,
VariableNode.TYPE_CHAR
};
@Override
public int getColumnCount() {
return 1;
}
@Override
public Object getValueFor(Object obj, int column) {
if (obj instanceof VariableNode) {
VariableNode var = (VariableNode) obj;
if (column == 0) {
// will be converted to an appropriate String by ValueCellRenderer
return var;
} else if (column == 1) {
return var.getTypeName();
}
}
return "";
}
@Override
public Class getColumnClass(int column) {
if (column == 0) {
return VariableNode.class;
}
return String.class;
}
@Override
public boolean isCellEditable(Object o, int i) {
if (i == 0 && o instanceof VariableNode) {
VariableNode var = (VariableNode) o;
//System.out.println("type: " + var.getTypeName());
for (int type : editableTypes) {
if (var.getType() == type) {
return true;
}
}
}
return false;
}
@Override
public void setValueFor(Object o, int i, Object o1) {
VariableNode var = (VariableNode) o;
String stringValue = (String) o1;
Debugger dbg = editor.getDebugger();
Value value = null;
try {
switch (var.getType()) {
case VariableNode.TYPE_INTEGER:
value = dbg.vm().mirrorOf(Integer.parseInt(stringValue));
break;
case VariableNode.TYPE_BOOLEAN:
value = dbg.vm().mirrorOf(Boolean.parseBoolean(stringValue));
break;
case VariableNode.TYPE_FLOAT:
value = dbg.vm().mirrorOf(Float.parseFloat(stringValue));
break;
case VariableNode.TYPE_STRING:
value = dbg.vm().mirrorOf(stringValue);
break;
case VariableNode.TYPE_LONG:
value = dbg.vm().mirrorOf(Long.parseLong(stringValue));
break;
case VariableNode.TYPE_BYTE:
value = dbg.vm().mirrorOf(Byte.parseByte(stringValue));
break;
case VariableNode.TYPE_DOUBLE:
value = dbg.vm().mirrorOf(Double.parseDouble(stringValue));
break;
case VariableNode.TYPE_SHORT:
value = dbg.vm().mirrorOf(Short.parseShort(stringValue));
break;
case VariableNode.TYPE_CHAR:
// TODO: better char support
if (stringValue.length() > 0) {
value = dbg.vm().mirrorOf(stringValue.charAt(0));
}
break;
}
} catch (NumberFormatException ex) {
Messages.log(getClass().getName() + " invalid value entered for " +
var.getName() + " -> " + stringValue);
}
if (value != null) {
var.setValue(value);
Messages.log(getClass().getName() + " new value set: " + var.getStringValue());
}
}
@Override
public String getColumnName(int i) {
return columnNames[i];
}
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
/**
* Renderer for the tree portion of the outline component.
* Handles icons, text color and tool tips.
*/
class OutlineRenderer implements RenderDataProvider {
Icon[][] icons;
static final int ICON_SIZE = 16;
OutlineRenderer() {
icons = loadIcons("theme/variables-1x.png");
}
/**
* Load multiple icons (horizontal) with multiple states (vertical) from
* a single file.
*
* @param fileName file path in the mode folder.
* @return a nested array (first index: icon, second index: state) or
* null if the file wasn't found.
*/
private ImageIcon[][] loadIcons(String fileName) {
Mode mode = editor.getMode();
File file = mode.getContentFile(fileName);
if (!file.exists()) {
Messages.log(getClass().getName(), "icon file not found: " + file.getAbsolutePath());
return null;
}
Image allIcons = mode.loadImage(fileName);
int cols = allIcons.getWidth(null) / ICON_SIZE;
int rows = allIcons.getHeight(null) / ICON_SIZE;
ImageIcon[][] iconImages = new ImageIcon[cols][rows];
for (int i = 0; i < cols; i++) {
for (int j = 0; j < rows; j++) {
Image image = new BufferedImage(ICON_SIZE, ICON_SIZE, BufferedImage.TYPE_INT_ARGB);
Graphics g = image.getGraphics();
g.drawImage(allIcons, -i * ICON_SIZE, -j * ICON_SIZE, null);
iconImages[i][j] = new ImageIcon(image);
}
}
return iconImages;
}
protected Icon getIcon(int type, int state) {
if (type < 0 || type > icons.length - 1) {
return null;
}
return icons[type][state];
}
protected VariableNode toVariableNode(Object o) {
return (o instanceof VariableNode) ? (VariableNode) o : null;
}
protected Icon toGray(Icon icon) {
if (icon instanceof ImageIcon) {
Image grayImage = GrayFilter.createDisabledImage(((ImageIcon) icon).getImage());
return new ImageIcon(grayImage);
}
// Cannot convert
return icon;
}
@Override
public String getDisplayName(Object o) {
return o.toString();
}
@Override
public boolean isHtmlDisplayName(Object o) {
return false;
}
@Override
public Color getBackground(Object o) {
return null;
}
@Override
public Color getForeground(Object o) {
if (tree.isEnabled()) {
return null; // default
} else {
return Color.GRAY;
}
}
@Override
public String getTooltipText(Object o) {
VariableNode var = toVariableNode(o);
if (var != null) {
return var.getDescription();
} else {
return "";
}
}
@Override
public Icon getIcon(Object o) {
VariableNode var = toVariableNode(o);
if (var != null) {
return getIcon(var.getType(), tree.isEnabled() ? 0 : 1);
}
if (o instanceof TreeNode) {
UIDefaults defaults = UIManager.getDefaults();
boolean isLeaf = model.isLeaf(o);
Icon icon;
if (isLeaf) {
icon = defaults.getIcon("Tree.leafIcon");
} else {
icon = defaults.getIcon("Tree.closedIcon");
}
if (!tree.isEnabled()) {
return toGray(icon);
}
return icon;
}
return null; // use standard icon
}
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
// TODO: could probably extend the simpler DefaultTableCellRenderer here
/**
* Renderer for the value column. Uses an italic font for null values and
* Object values ("instance of ..."). Uses a gray color when tree is not
* enabled.
*/
protected class ValueCellRenderer extends DefaultOutlineCellRenderer {
public ValueCellRenderer() {
super();
}
protected void setItalic(boolean on) {
setFont(new Font(getFont().getName(),
on ? Font.ITALIC : Font.PLAIN,
getFont().getSize()));
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
setForeground(tree.isEnabled() ? Color.BLACK : Color.GRAY);
if (value instanceof VariableNode) {
VariableNode var = (VariableNode) value;
setItalic(var.getValue() == null ||
var.getType() == VariableNode.TYPE_OBJECT);
value = var.getStringValue();
}
setValue(value);
return c;
}
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
/**
* Editor for the value column. Will show an empty string when editing
* String values that are null.
*/
protected class ValueCellEditor extends DefaultCellEditor {
public ValueCellEditor() {
super(new JTextField());
}
@Override
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected,
int row, int column) {
if (!(value instanceof VariableNode)) {
return super.getTableCellEditorComponent(table, value, isSelected, row, column);
}
VariableNode var = (VariableNode) value;
String strValue =
(var.getType() == VariableNode.TYPE_STRING &&
var.getValue() == null) ? "" : var.getStringValue();
return super.getTableCellEditorComponent(table, strValue, isSelected, row, column);
}
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
/**
* Handler for expanding and collapsing tree nodes.
* Implements lazy loading of tree data (on expand).
*/
protected class ExpansionHandler implements ExtTreeWillExpandListener, TreeExpansionListener {
@Override
public void treeWillExpand(TreeExpansionEvent tee) throws ExpandVetoException {
//System.out.println("will expand");
Object last = tee.getPath().getLastPathComponent();
if (!(last instanceof VariableNode)) {
return;
}
VariableNode var = (VariableNode) last;
var.removeAllChildren(); // TODO: should we only load it once?
var.addChildren(filterNodes(editor.getDebugger().getFields(var.getValue(), 0, true), new ThisFilter()));
}
@Override
public void treeWillCollapse(TreeExpansionEvent tee) throws ExpandVetoException {
//throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public void treeExpanded(TreeExpansionEvent tee) {
//System.out.println("expanded: " + tee.getPath());
if (!expandedNodes.contains(tee.getPath())) {
expandedNodes.add(tee.getPath());
}
}
@Override
public void treeCollapsed(TreeExpansionEvent tee) {
//System.out.println("collapsed: " + tee.getPath());
// first remove all children of collapsed path
// this makes sure children do not appear before parents in the list.
// (children can't be expanded before their parents)
List removalList = new ArrayList<>();
for (TreePath path : expandedNodes) {
if (path.getParentPath().equals(tee.getPath())) {
removalList.add(path);
}
}
for (TreePath path : removalList) {
expandedNodes.remove(path);
}
// remove collapsed path
expandedNodes.remove(tee.getPath());
}
@Override
public void treeExpansionVetoed(TreeExpansionEvent tee, ExpandVetoException eve) {
//System.out.println("expansion vetoed");
// nop
}
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
// removed in 3.0a9, doesn't seem to be used?
// protected static void run(final VariableInspector vi) {
// EventQueue.invokeLater(new Runnable() {
// @Override
// public void run() {
// vi.setVisible(true);
// }
// });
// }
/*
public DefaultMutableTreeNode getRootNode() {
return rootNode;
}
*/
/**
* Unlock the inspector window. Rebuild after this to avoid ... dots in the
* trees labels
*/
public void unlock() {
tree.setEnabled(true);
}
/**
* Lock the inspector window. Cancels open edits.
*/
public void lock() {
if (tree.getCellEditor() != null) {
//tree.getCellEditor().stopCellEditing(); // force quit open edit
tree.getCellEditor().cancelCellEditing(); // cancel an open edit
}
tree.setEnabled(false);
}
/**
* Reset the inspector windows data. Rebuild after this to make changes
* visible.
*/
public void reset() {
rootNode.removeAllChildren();
// clear local data for good measure (in case someone rebuilds)
callStack.clear();
locals.clear();
thisFields.clear();
declaredThisFields.clear();
expandedNodes.clear();
// update
treeModel.nodeStructureChanged(rootNode);
}
/**
* Update call stack data.
*
* @param nodes a list of nodes that represent the call stack.
* @param title the title to be used when labeling or otherwise grouping
* call stack data.
*/
public void updateCallStack(List nodes, String title) {
callStack = nodes;
}
/**
* Update locals data.
*
* @param nodes a list of {@link VariableNode} to be shown as local
* variables in the inspector.
* @param title the title to be used when labeling or otherwise grouping
* locals data.
*/
public void updateLocals(List nodes, String title) {
locals = nodes;
}
/**
* Update this-fields data.
*
* @param nodes a list of {@link VariableNode}s to be shown as this-fields
* in the inspector.
* @param title the title to be used when labeling or otherwise grouping
* this-fields data.
*/
public void updateThisFields(List nodes, String title) {
thisFields = nodes;
}
/**
* Update declared (non-inherited) this-fields data.
*
* @param nodes a list of {@link VariableNode}s to be shown as declared
* this-fields in the inspector.
* @param title the title to be used when labeling or otherwise grouping
* declared this-fields data.
*/
public void updateDeclaredThisFields(List nodes, String title) {
declaredThisFields = nodes;
}
/**
* Rebuild the outline tree from current data. Uses the data provided by
* {@link #updateCallStack}, {@link #updateLocals}, {@link #updateThisFields}
* and {@link #updateDeclaredThisFields}
*/
public void rebuild() {
rootNode.removeAllChildren();
// add all locals to root
addAllNodes(rootNode, locals);
// add non-inherited this fields
addAllNodes(rootNode, filterNodes(declaredThisFields, new LocalHidesThisFilter(locals, LocalHidesThisFilter.MODE_PREFIX)));
// add p5 builtins in a new folder
builtins.removeAllChildren();
addAllNodes(builtins, filterNodes(thisFields, new P5BuiltinsFilter()));
if (builtins.getChildCount() > 0) { // skip builtins in certain situations e.g. in pure java tabs.
rootNode.add(builtins);
}
// notify tree (using model) changed a node and its children
// http://stackoverflow.com/questions/2730851/how-to-update-jtree-elements
// needs to be done before expanding paths!
treeModel.nodeStructureChanged(rootNode);
// handle node expansions
for (TreePath path : expandedNodes) {
//System.out.println("re-expanding: " + path);
path = synthesizePath(path);
if (path != null) {
tree.expandPath(path);
} else {
//System.out.println("couldn't synthesize path");
}
}
// this expansion causes problems when sorted and stepping
//tree.expandPath(new TreePath(new Object[]{rootNode, builtins}));
}
/**
* Re-build a {@link TreePath} from a previous path using equals-checks
* starting at the root node. This is used to use paths from previous trees
* for use on the current tree.
* @param path the path to synthesize.
* @return the rebuilt path, usable on the current tree.
*/
protected TreePath synthesizePath(TreePath path) {
//System.out.println("synthesizing: " + path);
if (path.getPathCount() == 0 || !rootNode.equals(path.getPathComponent(0))) {
return null;
}
Object[] newPath = new Object[path.getPathCount()];
newPath[0] = rootNode;
TreeNode currentNode = rootNode;
for (int i = 0; i < path.getPathCount() - 1; i++) {
// get next node
for (int j = 0; j < currentNode.getChildCount(); j++) {
TreeNode nextNode = currentNode.getChildAt(j);
if (nextNode.equals(path.getPathComponent(i + 1))) {
currentNode = nextNode;
newPath[i + 1] = nextNode;
//System.out.println("found node " + (i+1) + ": " + nextNode);
break;
}
}
if (newPath[i + 1] == null) {
//System.out.println("didn't find node");
return null;
}
}
return new TreePath(newPath);
}
/**
* Filter a list of nodes using a {@link VariableNodeFilter}.
* @param nodes the list of nodes to filter.
* @param filter the filter to be used.
* @return the filtered list.
*/
protected List filterNodes(List nodes, VariableNodeFilter filter) {
List filtered = new ArrayList<>();
for (VariableNode node : nodes) {
if (filter.accept(node)) {
filtered.add(node);
}
}
return filtered;
}
protected void addAllNodes(DefaultMutableTreeNode root, List nodes) {
for (MutableTreeNode node : nodes) {
root.add(node);
}
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
public interface VariableNodeFilter {
/** Check whether the filter accepts a {@link VariableNode}. */
public boolean accept(VariableNode var);
}
/**
* A {@link VariableNodeFilter} that accepts Processing built-in variable
* names.
*/
public class P5BuiltinsFilter implements VariableNodeFilter {
protected String[] p5Builtins = {
"focused",
"frameCount",
"frameRate",
"height",
"online",
"screen",
"width",
"mouseX",
"mouseY",
"pmouseX",
"pmouseY",
"key",
"keyCode",
"keyPressed"
};
@Override
public boolean accept(VariableNode var) {
return Arrays.asList(p5Builtins).contains(var.getName());
}
}
/**
* A {@link VariableNodeFilter} that rejects implicit this references.
* (Names starting with "this$")
*/
public class ThisFilter implements VariableNodeFilter {
@Override
public boolean accept(VariableNode var) {
return !var.getName().startsWith("this$");
}
}
// . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
/**
* A {@link VariableNodeFilter} that either rejects this-fields if hidden by
* a local, or prefixes its name with "this."
*/
public class LocalHidesThisFilter implements VariableNodeFilter {
// Reject a this-field if hidden by a local.
public static final int MODE_HIDE = 0; // don't show hidden this fields
// Prefix a this-fields name with "this." if hidden by a local.
public static final int MODE_PREFIX = 1;
protected List locals;
protected int mode;
/**
* Construct a {@link LocalHidesThisFilter}.
* @param locals a list of locals to check against
* @param mode either {@link #MODE_HIDE} or {@link #MODE_PREFIX}
*/
public LocalHidesThisFilter(List locals, int mode) {
this.locals = locals;
this.mode = mode;
}
@Override
public boolean accept(VariableNode var) {
// check if the same name appears in the list of locals i.e. the local hides the field
for (VariableNode local : locals) {
if (var.getName().equals(local.getName())) {
switch (mode) {
case MODE_PREFIX:
var.setName("this." + var.getName());
return true;
case MODE_HIDE:
return false;
}
}
}
return true;
}
}
}
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