Examples with EnterHandlerDelegate com.intellij.codeInsight.editorActions.enter.EnterHandlerDelegate used on opensource projects

Example 1 with EnterHandlerDelegate

use of com.intellij.codeInsight.editorActions.enter.EnterHandlerDelegate in project intellij-community by JetBrains.

the class EnterHandler method executeWriteActionInner.

private void executeWriteActionInner(Editor editor, Caret caret, DataContext dataContext, Project project) {
    CodeInsightSettings settings = CodeInsightSettings.getInstance();
    if (project == null) {
        myOriginalHandler.execute(editor, caret, dataContext);
        return;
    }
    final Document document = editor.getDocument();
    final PsiFile file = PsiUtilBase.getPsiFileInEditor(editor, project);
    if (file == null) {
        myOriginalHandler.execute(editor, caret, dataContext);
        return;
    }
    CommandProcessor.getInstance().setCurrentCommandName(CodeInsightBundle.message("command.name.typing"));
    EditorModificationUtil.deleteSelectedText(editor);
    int caretOffset = editor.getCaretModel().getOffset();
    CharSequence text = document.getCharsSequence();
    int length = document.getTextLength();
    if (caretOffset < length && text.charAt(caretOffset) != '\n') {
        int offset1 = CharArrayUtil.shiftBackward(text, caretOffset, " \t");
        if (offset1 < 0 || text.charAt(offset1) == '\n') {
            int offset2 = CharArrayUtil.shiftForward(text, offset1 + 1, " \t");
            boolean isEmptyLine = offset2 >= length || text.charAt(offset2) == '\n';
            if (!isEmptyLine) {
                // we are in leading spaces of a non-empty line
                myOriginalHandler.execute(editor, caret, dataContext);
                return;
            }
        }
    }
    boolean forceIndent = false;
    boolean forceSkipIndent = false;
    Ref<Integer> caretOffsetRef = new Ref<>(caretOffset);
    Ref<Integer> caretAdvanceRef = new Ref<>(0);
    final EnterHandlerDelegate[] delegates = Extensions.getExtensions(EnterHandlerDelegate.EP_NAME);
    for (EnterHandlerDelegate delegate : delegates) {
        EnterHandlerDelegate.Result result = delegate.preprocessEnter(file, editor, caretOffsetRef, caretAdvanceRef, dataContext, myOriginalHandler);
        if (caretOffsetRef.get() > document.getTextLength()) {
            throw new AssertionError("Wrong caret offset change by " + delegate);
        }
        if (result == EnterHandlerDelegate.Result.Stop) {
            return;
        }
        if (result != EnterHandlerDelegate.Result.Continue) {
            if (result == EnterHandlerDelegate.Result.DefaultForceIndent) {
                forceIndent = true;
            } else if (result == EnterHandlerDelegate.Result.DefaultSkipIndent) {
                forceSkipIndent = true;
            }
            break;
        }
    }
    // update after changes done in preprocessEnter()
    text = document.getCharsSequence();
    caretOffset = caretOffsetRef.get().intValue();
    boolean isFirstColumn = caretOffset == 0 || text.charAt(caretOffset - 1) == '\n';
    final boolean insertSpace = !isFirstColumn && !(caretOffset >= text.length() || text.charAt(caretOffset) == ' ' || text.charAt(caretOffset) == '\t');
    editor.getCaretModel().moveToOffset(caretOffset);
    myOriginalHandler.execute(editor, caret, dataContext);
    if (!editor.isInsertMode() || forceSkipIndent) {
        return;
    }
    if (settings.SMART_INDENT_ON_ENTER || forceIndent) {
        caretOffset += 1;
        caretOffset = CharArrayUtil.shiftForward(editor.getDocument().getCharsSequence(), caretOffset, " \t");
    } else {
        caretOffset = editor.getCaretModel().getOffset();
    }
    final DoEnterAction action = new DoEnterAction(file, editor, document, dataContext, caretOffset, !insertSpace, caretAdvanceRef.get(), project);
    action.setForceIndent(forceIndent);
    action.run();
    for (EnterHandlerDelegate delegate : delegates) {
        if (delegate.postProcessEnter(file, editor, dataContext) == EnterHandlerDelegate.Result.Stop) {
            break;
        }
    }
    if (settings.SMART_INDENT_ON_ENTER && action.isIndentAdjustmentNeeded()) {
        FormatterBasedIndentAdjuster.scheduleIndentAdjustment(project, document, editor.getCaretModel().getOffset());
    }
}