Examples with ScriptEditorControl qupath.lib.gui.scripting.ScriptEditorControl used on opensource projects

Example 1 with ScriptEditorControl

use of qupath.lib.gui.scripting.ScriptEditorControl in project qupath by qupath.

the class RichScriptEditor method getNewEditor.

@Override
protected ScriptEditorControl getNewEditor() {
    try {
        CodeArea codeArea = new CustomCodeArea();
        CodeAreaControl control = new CodeAreaControl(codeArea);
        /*
			 * Using LineNumberFactory.get(codeArea) gives errors related to the new paragraph folding introduced in RichTextFX 0.10.6.
			 *  java.lang.IllegalArgumentException: Visible paragraphs' last index is [-1] but visibleParIndex was [0]
			 *  
			 * To replicate
			 *  - Run using codeArea.setParagraphGraphicFactory(LineNumberFactory.get(codeArea));
			 *  - Add some code (including line breaks) to the code area
			 *  - Select all text (Ctrl/Cmd + A)
			 *  - Delete text (backspace)
			 *  - Add more text
			 *  
			 * The change below avoids code folding being used.
			 */
        codeArea.setParagraphGraphicFactory(LineNumberFactory.get(codeArea, digits -> "%1$" + digits + "s", null, null));
        // codeArea.setParagraphGraphicFactory(LineNumberFactory.get(codeArea));
        codeArea.setStyle("-fx-background-color: -fx-control-inner-background;");
        // Catch key typed events for special character handling (which should be platform-agnostic)
        codeArea.addEventFilter(KeyEvent.KEY_TYPED, e -> {
            if (e.isConsumed())
                return;
            var scriptSyntax = currentLanguage.get().getSyntax();
            if ("(".equals(e.getCharacter())) {
                scriptSyntax.handleLeftParenthesis(control, smartEditing.get());
                e.consume();
            } else if (")".equals(e.getCharacter())) {
                scriptSyntax.handleRightParenthesis(control, smartEditing.get());
                e.consume();
            } else if ("\"".equals(e.getCharacter())) {
                scriptSyntax.handleQuotes(control, true, smartEditing.get());
                e.consume();
            } else if ("\'".equals(e.getCharacter())) {
                scriptSyntax.handleQuotes(control, false, smartEditing.get());
                e.consume();
            }
        });
        // TODO: Check if DefaultScriptEditor does any of these? It should be able to at least do syntaxing/auto-completion
        codeArea.addEventFilter(KeyEvent.KEY_PRESSED, e -> {
            if (e.isConsumed())
                return;
            var scriptSyntax = currentLanguage.get().getSyntax();
            if (scriptSyntax != null) {
                if (e.getCode() == KeyCode.TAB) {
                    scriptSyntax.handleTabPress(control, e.isShiftDown());
                    e.consume();
                } else if (e.isShortcutDown() && e.getCode() == KeyCode.SLASH) {
                    scriptSyntax.handleLineComment(control);
                    e.consume();
                } else if (e.getCode() == KeyCode.ENTER && codeArea.getSelectedText().length() == 0) {
                    scriptSyntax.handleNewLine(control, smartEditing.get());
                    e.consume();
                } else if (e.getCode() == KeyCode.BACK_SPACE) {
                    if (scriptSyntax.handleBackspace(control, smartEditing.get()) && !e.isShortcutDown() && !e.isShiftDown())
                        e.consume();
                } else if (beautifyerCodeCombination.match(e)) {
                    getCurrentTextComponent().setText(scriptSyntax.beautify(getCurrentText()));
                    e.isConsumed();
                }
            }
            var scriptAutoCompletor = currentLanguage.get().getAutoCompletor();
            if (scriptAutoCompletor != null) {
                if (completionCodeCombination.match(e)) {
                    scriptAutoCompletor.applyNextCompletion(control);
                    e.isConsumed();
                } else if (!e.isControlDown())
                    scriptAutoCompletor.resetCompletion();
            }
        });
        codeArea.setOnContextMenuRequested(e -> menu.show(codeArea.getScene().getWindow(), e.getScreenX(), e.getScreenY()));
        @SuppressWarnings("unused") var cleanup = codeArea.multiPlainChanges().successionEnds(Duration.ofMillis(delayMillis)).supplyTask(() -> {
            Task<StyleSpans<Collection<String>>> task = new Task<>() {

                @Override
                protected StyleSpans<Collection<String>> call() {
                    return scriptHighlighter.get().computeEditorHighlighting(codeArea.getText());
                }
            };
            executor.execute(task);
            return task;
        }).awaitLatest(codeArea.multiPlainChanges()).filterMap(t -> {
            if (t.isSuccess())
                return Optional.of(t.get());
            var exception = t.getFailure();
            String message = exception.getLocalizedMessage() == null ? exception.getClass().getSimpleName() : exception.getLocalizedMessage();
            logger.error("Error applying syntax highlighting: {}", message);
            logger.debug("{}", t);
            return Optional.empty();
        }).subscribe(change -> codeArea.setStyleSpans(0, change));
        codeArea.getStylesheets().add(getClass().getClassLoader().getResource("scripting_styles.css").toExternalForm());
        scriptHighlighter.bind(Bindings.createObjectBinding(() -> ScriptHighlighterProvider.getHighlighterFromLanguage(getCurrentLanguage()), currentLanguage));
        // Triggered whenever the script styling changes (e.g. change of language)
        scriptHighlighter.addListener((v, o, n) -> {
            if (n == null || (o != null && o.getClass().equals(n.getClass())))
                return;
            StyleSpans<Collection<String>> changes = scriptHighlighter.get().computeEditorHighlighting(codeArea.getText());
            codeArea.setStyleSpans(0, changes);
        });
        return control;
    } catch (Exception e) {
        // Default to superclass implementation
        logger.error("Unable to create code area", e);
        return super.getNewEditor();
    }
}