Example usage for org.eclipse.jdt.internal.formatter DefaultCodeFormatter createIndentationString

Introduction

In this page you can find the example usage for org.eclipse.jdt.internal.formatter DefaultCodeFormatter createIndentationString.

Prototype

@Override
    public String createIndentationString(final int indentationLevel) 

Source Link

Usage

From source file:com.google.gwt.eclipse.core.editors.java.JsniFormattingUtil.java

License:Open Source License

public static TextEdit format(IDocument document, TypedPosition partition,
        Map<String, String> javaFormattingPrefs, Map<String, String> javaScriptFormattingPrefs,
        String original) {//from w w w. j a v  a  2 s .c o m
    try {
        // Extract the JSNI block out of the document
        int offset = partition.getOffset();
        int length = partition.getLength();

        // Determine the line delimiter, indent string, and tab/indent widths
        String lineDelimiter = TextUtilities.getDefaultLineDelimiter(document);
        int tabWidth = IndentManipulation.getTabWidth(javaFormattingPrefs);
        int indentWidth = IndentManipulation.getIndentWidth(javaFormattingPrefs);

        // Get indentation level of the first line of the JSNI block (this should
        // be the line containing the JSNI method declaration)
        int methodDeclarationOffset = getMethodDeclarationOffset(document, offset);
        int jsniLine1 = document.getLineOfOffset(methodDeclarationOffset);
        int methodIndentLevel = getLineIndentLevel(document, jsniLine1, tabWidth, indentWidth);
        DefaultCodeFormatter defaultCodeFormatter = new DefaultCodeFormatter(javaFormattingPrefs);
        String indentLine = defaultCodeFormatter.createIndentationString(methodIndentLevel);

        // Extract the JSNI body out of the block and split it up by line
        String jsniSource = document.get(offset, length);
        String body = JsniParser.extractMethodBody(jsniSource);

        String formattedJs;

        // JSNI Java references mess up the JS formatter, so replace them
        // with place holder values
        JsniJavaRefReplacementResult replacementResults = replaceJsniJavaRefs(body);
        body = replacementResults.getJsni();

        TextEdit formatEdit = CodeFormatterUtil.format2(CodeFormatter.K_STATEMENTS, body, methodIndentLevel + 1,
                lineDelimiter, javaScriptFormattingPrefs);

        if (formatEdit != null) {

            body = restoreJsniJavaRefs(replacementResults);

            Document d = new Document(body);
            formatEdit.apply(d);

            formattedJs = d.get();

            if (!formattedJs.startsWith(lineDelimiter)) {
                formattedJs = lineDelimiter + formattedJs;
            }

            if (!formattedJs.endsWith(lineDelimiter)) {
                formattedJs = formattedJs + lineDelimiter;
            }

            formattedJs = formattedJs + indentLine;

            formattedJs = "/*-{" + formattedJs + "}-*/";

        } else {

            if (original == null) {
                return null;
            }

            formattedJs = original; // formatting failed, use the original string
        }

        return new ReplaceEdit(offset, length, formattedJs);

    } catch (Exception e) {
        GWTPluginLog.logError(e);
        return null;
    }
}

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From source file:krasa.formatter.JsniFormattingUtil.java

License:Open Source License

public static TextEdit format(IDocument document, TypedPosition partition,
        Map<String, String> javaFormattingPrefs, Map<String, String> javaScriptFormattingPrefs,
        String original) {//from  ww  w.  ja  va  2  s.c o m
    try {
        // Extract the JSNI block out of the document
        int offset = partition.getOffset();
        int length = partition.getLength();

        // Determine the line delimiter, indent string, and tab/indent widths
        String lineDelimiter = Settings.LINE_SEPARATOR;
        int tabWidth = IndentManipulation.getTabWidth(javaFormattingPrefs);
        int indentWidth = IndentManipulation.getIndentWidth(javaFormattingPrefs);

        // Get indentation level of the first line of the JSNI block (this should
        // be the line containing the JSNI method declaration)
        int methodDeclarationOffset = getMethodDeclarationOffset(document, offset);

        int jsniLine1 = document.getLineOfOffset(methodDeclarationOffset);
        int methodIndentLevel = getLineIndentLevel(document, jsniLine1, tabWidth, indentWidth);
        DefaultCodeFormatter defaultCodeFormatter = new DefaultCodeFormatter(javaFormattingPrefs);
        String indentLine = defaultCodeFormatter.createIndentationString(methodIndentLevel);

        // Extract the JSNI body out of the block and split it up by line
        String jsniSource = document.get(offset, length);
        String body = JsniParser.extractMethodBody(jsniSource);

        String formattedJs;

        // JSNI Java references mess up the JS formatter, so replace them
        // with place holder values
        JsniJavaRefReplacementResult replacementResults = replaceJsniJavaRefs(body);
        body = replacementResults.getJsni();
        CodeFormatter codeFormatter = ToolFactory.createCodeFormatter(javaScriptFormattingPrefs);

        TextEdit formatEdit = codeFormatter.format(CodeFormatter.K_STATEMENTS, body, 0, body.length(),
                methodIndentLevel + 1, lineDelimiter);

        if (formatEdit != null) {

            body = restoreJsniJavaRefs(replacementResults);

            Document d = new Document(body);
            formatEdit.apply(d);

            formattedJs = d.get();

            if (!formattedJs.startsWith(lineDelimiter)) {
                formattedJs = lineDelimiter + formattedJs;
            }

            if (!formattedJs.endsWith(lineDelimiter)) {
                formattedJs = formattedJs + lineDelimiter;
            }

            formattedJs = formattedJs + indentLine;

            formattedJs = "/*-{" + formattedJs + "}-*/";

        } else {

            if (original == null) {
                return null;
            }

            formattedJs = original; // formatting failed, use the original string
        }

        return new ReplaceEdit(offset, length, formattedJs);

    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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