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InspectMode.java
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package processing.mode.java;
import static processing.mode.java.ASTUtils.getSimpleNameAt;
import static processing.mode.java.ASTUtils.resolveBinding;
import java.awt.EventQueue;
import java.awt.event.InputEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelEvent;
import java.util.function.Predicate;
import javax.swing.JMenuItem;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.IBinding;
import org.eclipse.jdt.core.dom.MethodDeclaration;
import org.eclipse.jdt.core.dom.SimpleName;
import org.eclipse.jdt.core.dom.TypeDeclaration;
import org.eclipse.jdt.core.dom.VariableDeclaration;
import processing.app.Language;
import processing.app.Messages;
import processing.app.Platform;
class InspectMode {
final JavaEditor editor;
final PreprocService pps;
final ShowUsage usage;
boolean inspectModeEnabled;
boolean isMouse1Down;
boolean isMouse2Down;
boolean isHotkeyDown;
Predicate<MouseEvent> mouseEventHotkeyTest = Platform.isMacOS() ?
InputEvent::isMetaDown : InputEvent::isControlDown;
Predicate<KeyEvent> keyEventHotkeyTest = Platform.isMacOS() ?
e -> e.getKeyCode() == KeyEvent.VK_META :
e -> e.getKeyCode() == KeyEvent.VK_CONTROL;
InspectMode(JavaEditor editor, PreprocService pps, ShowUsage usage) {
this.editor = editor;
this.pps = pps;
this.usage = usage;
// Add listeners
JMenuItem showUsageItem = new JMenuItem(Language.text("editor.popup.jump_to_declaration"));
showUsageItem.addActionListener(e -> handleInspect());
editor.getTextArea().getRightClickPopup().add(showUsageItem);
editor.getJavaTextArea().getPainter().addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
isMouse1Down = isMouse1Down || (e.getButton() == MouseEvent.BUTTON1);
isMouse2Down = isMouse2Down || (e.getButton() == MouseEvent.BUTTON2);
}
@Override
public void mouseReleased(MouseEvent e) {
boolean releasingMouse1 = e.getButton() == MouseEvent.BUTTON1;
boolean releasingMouse2 = e.getButton() == MouseEvent.BUTTON2;
if (JavaMode.inspectModeHotkeyEnabled && inspectModeEnabled &&
isMouse1Down && releasingMouse1) {
handleInspect(e);
} else if (!inspectModeEnabled && isMouse2Down && releasingMouse2) {
handleInspect(e);
}
isMouse1Down = isMouse1Down && !releasingMouse1;
isMouse2Down = isMouse2Down && !releasingMouse2;
}
});
editor.getJavaTextArea().getPainter().addMouseMotionListener(new MouseAdapter() {
@Override
public void mouseDragged(MouseEvent e) {
if (editor.isSelectionActive()) {
// Mouse was dragged too much, disable
inspectModeEnabled = false;
// Cancel possible mouse 2 press
isMouse2Down = false;
}
}
@Override
public void mouseMoved(MouseEvent e) {
isMouse1Down = false;
isMouse2Down = false;
isHotkeyDown = mouseEventHotkeyTest.test(e);
inspectModeEnabled = isHotkeyDown;
}
});
editor.getJavaTextArea().addMouseWheelListener(new MouseAdapter() {
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
// Editor was scrolled while mouse 1 was pressed, disable
if (isMouse1Down) inspectModeEnabled = false;
}
});
editor.getJavaTextArea().addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
isHotkeyDown = isHotkeyDown || keyEventHotkeyTest.test(e);
// Enable if hotkey was just pressed and mouse 1 is not down
inspectModeEnabled = inspectModeEnabled || (!isMouse1Down && isHotkeyDown);
}
@Override
public void keyReleased(KeyEvent e) {
isHotkeyDown = isHotkeyDown && !keyEventHotkeyTest.test(e);
// Disable if hotkey was just released
inspectModeEnabled = inspectModeEnabled && isHotkeyDown;
}
});
}
void handleInspect() {
int off = editor.getSelectionStart();
int tabIndex = editor.getSketch().getCurrentCodeIndex();
pps.whenDoneBlocking(ps -> handleInspect(ps, tabIndex, off));
}
// Thread: EDT
void handleInspect(MouseEvent evt) {
int off = editor.getJavaTextArea().xyToOffset(evt.getX(), evt.getY());
if (off < 0) return;
int tabIndex = editor.getSketch().getCurrentCodeIndex();
pps.whenDoneBlocking(ps -> handleInspect(ps, tabIndex, off));
}
// Thread: worker
private void handleInspect(PreprocSketch ps, int tabIndex, int offset) {
ASTNode root = ps.compilationUnit;
int javaOffset = ps.tabOffsetToJavaOffset(tabIndex, offset);
SimpleName simpleName = getSimpleNameAt(root, javaOffset, javaOffset);
if (simpleName == null) {
Messages.log("no simple name found at click location");
return;
}
IBinding binding = resolveBinding(simpleName);
if (binding == null) {
Messages.log("binding not resolved");
return;
}
String key = binding.getKey();
ASTNode decl = ps.compilationUnit.findDeclaringNode(key);
if (decl == null) {
Messages.log("decl not found, showing usage instead");
usage.findUsageAndUpdateTree(ps, binding);
return;
}
SimpleName declName = null;
switch (binding.getKind()) {
case IBinding.TYPE: declName = ((TypeDeclaration) decl).getName(); break;
case IBinding.METHOD: declName = ((MethodDeclaration) decl).getName(); break;
case IBinding.VARIABLE: declName = ((VariableDeclaration) decl).getName(); break;
}
if (declName == null) {
Messages.log("decl name not found " + decl);
return;
}
if (declName.equals(simpleName)) {
usage.findUsageAndUpdateTree(ps, binding);
} else {
Messages.log("found declaration, offset " + decl.getStartPosition() + ", name: " + declName);
SketchInterval si = ps.mapJavaToSketch(declName);
if (!ps.inRange(si)) return;
EventQueue.invokeLater(() -> {
editor.highlight(si.tabIndex, si.startTabOffset, si.stopTabOffset);
});
}
}
void dispose() {
// Nothing to do
}
}