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benfrybenfry
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breaking out these static classes to be on their own
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‎java/src/processing/mode/java/pdex/InspectMode.java‎

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

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