Java 类org.springframework.web.util.TagUtils 实例源码

/**
 * @see MessageTag#doStartTagInternal()
 * @should evaluate specified message resolvable
 * @should resolve message by code
 * @should resolve message in locale that different from default
 * @should return code if no message resolved
 * @should use body content as fallback if no message resolved
 * @should use text attribute as fallback if no message resolved
 * @should use body content in prior to text attribute as fallback if no message resolved
 * @should ignore fallbacks if tag locale differs from context locale
 */
@Override
protected int doEndTagInternal() throws JspException, IOException {
    try {
        // Resolve the unescaped message.
        String msg = resolveMessage();

        // HTML and/or JavaScript escape, if demanded.
        msg = isHtmlEscape() ? HtmlUtils.htmlEscape(msg) : msg;
        msg = this.javaScriptEscape ? JavaScriptUtils.javaScriptEscape(msg) : msg;

        // Expose as variable, if demanded, else write to the page.
        String resolvedVar = this.var;
        if (resolvedVar != null) {
            pageContext.setAttribute(resolvedVar, msg, TagUtils.getScope(this.scope));
        } else {
            writeMessage(msg);
        }

        return EVAL_PAGE;
    }
    catch (NoSuchMessageException ex) {
        throw new JspTagException(getNoSuchMessageExceptionDescription(ex));
    }
}

@Override
protected final int doStartTagInternal() throws JspException {
    if (this.value != null) {
        // Find the containing EditorAwareTag (e.g. BindTag), if applicable.
        EditorAwareTag tag = (EditorAwareTag) TagSupport.findAncestorWithClass(this, EditorAwareTag.class);
        if (tag == null) {
            throw new JspException("TransformTag can only be used within EditorAwareTag (e.g. BindTag)");
        }

        // OK, let's obtain the editor...
        String result = null;
        PropertyEditor editor = tag.getEditor();
        if (editor != null) {
            // If an editor was found, edit the value.
            editor.setValue(this.value);
            result = editor.getAsText();
        }
        else {
            // Else, just do a toString.
            result = this.value.toString();
        }
        result = htmlEscape(result);
        if (this.var != null) {
            pageContext.setAttribute(this.var, result, TagUtils.getScope(this.scope));
        }
        else {
            try {
                // Else, just print it out.
                pageContext.getOut().print(result);
            }
            catch (IOException ex) {
                throw new JspException(ex);
            }
        }
    }

    return SKIP_BODY;
}

@Test
@Verifies(value = "resolve a Tag with var not set to null", method = "doEndTag()")
public void doEndTag_shouldEvaluateVarIfIsNotNull() throws Exception {
    final String varName = "Mary";
    final String expectedOutput = "had a little lamb"; 
    openmrsMessageTag.setVar(varName);
    DefaultMessageSourceResolvable message = new DefaultMessageSourceResolvable(new String[] { "test" }, expectedOutput);
    openmrsMessageTag.setMessage(message);
    openmrsMessageTag.setScope(TagUtils.SCOPE_PAGE);

    checkDoEndTagEvaluationOfVar(varName, PageContext.PAGE_SCOPE, expectedOutput);
}

/**
 * Resolves the message, escapes it if demanded,
 * and writes it to the page (or exposes it as variable).
 * @see #resolveMessage()
 * @see org.springframework.web.util.HtmlUtils#htmlEscape(String)
 * @see org.springframework.web.util.JavaScriptUtils#javaScriptEscape(String)
 * @see #writeMessage(String)
 */
@Override
protected final int doStartTagInternal() throws JspException, IOException {
    try {
        // Resolve the unescaped message.
        String msg = resolveMessage();

        // HTML and/or JavaScript escape, if demanded.
        msg = isHtmlEscape() ? HtmlUtils.htmlEscape(msg) : msg;
        msg = this.javaScriptEscape ? JavaScriptUtils.javaScriptEscape(msg) : msg;

        // Expose as variable, if demanded, else write to the page.
        String resolvedVar = ExpressionEvaluationUtils.evaluateString("var", this.var, pageContext);
        if (resolvedVar != null) {
            String resolvedScope = ExpressionEvaluationUtils.evaluateString("scope", this.scope, pageContext);
            pageContext.setAttribute(resolvedVar, msg, TagUtils.getScope(resolvedScope));
        }
        else {
            writeMessage(msg);
        }

        return EVAL_BODY_INCLUDE;
    }
    catch (NoSuchMessageException ex) {
        throw new JspTagException(getNoSuchMessageExceptionDescription(ex));
    }
}

private SelectTag getSelectTag() {
    TagUtils.assertHasAncestorOfType(this, SelectTag.class, "options", "select");
    return (SelectTag) findAncestorWithClass(this, SelectTag.class);
}

private void assertUnderSelectTag() {
    TagUtils.assertHasAncestorOfType(this, SelectTag.class, "option", "select");
}

private SelectTag getSelectTag() {
    TagUtils.assertHasAncestorOfType(this, SelectTag.class, "options", "select");
    return (SelectTag) findAncestorWithClass(this, SelectTag.class);
}

private void assertUnderSelectTag() {
    TagUtils.assertHasAncestorOfType(this, SelectTag.class, "option", "select");
}

@Override
protected final int doStartTagInternal() throws JspException {
    Object resolvedValue = this.value;
    if (this.value instanceof String) {
        String strValue = (String) this.value;
        resolvedValue = ExpressionEvaluationUtils.evaluate("value", strValue, pageContext);
    }

    if (resolvedValue != null) {
        // Find the containing EditorAwareTag (e.g. BindTag), if applicable.
        EditorAwareTag tag = (EditorAwareTag) TagSupport.findAncestorWithClass(this, EditorAwareTag.class);
        if (tag == null) {
            throw new JspException("TransformTag can only be used within EditorAwareTag (e.g. BindTag)");
        }

        // OK, let's obtain the editor...
        String result = null;
        PropertyEditor editor = tag.getEditor();
        if (editor != null) {
            // If an editor was found, edit the value.
            editor.setValue(resolvedValue);
            result = editor.getAsText();
        }
        else {
            // Else, just do a toString.
            result = resolvedValue.toString();
        }
        result = isHtmlEscape() ? HtmlUtils.htmlEscape(result) : result;
        String resolvedVar = ExpressionEvaluationUtils.evaluateString("var", this.var, pageContext);
        if (resolvedVar != null) {
            String resolvedScope = ExpressionEvaluationUtils.evaluateString("scope", this.scope, pageContext);
            pageContext.setAttribute(resolvedVar, result, TagUtils.getScope(resolvedScope));
        }
        else {
            try {
                // Else, just print it out.
                pageContext.getOut().print(result);
            }
            catch (IOException ex) {
                throw new JspException(ex);
            }
        }
    }

    return SKIP_BODY;
}

/**
 * Set the scope to export the URL variable to. This attribute has no
 * meaning unless var is also defined.
 */
public void setScope(String scope) {
    this.scope = TagUtils.getScope(scope);
}

/**
 * Set the scope to export the evaluation result to.
 * This attribute has no meaning unless var is also defined.
 */
public void setScope(String scope) {
    this.scope = TagUtils.getScope(scope);
}

/**
 * Set the scope to export the URL variable to. This attribute has no
 * meaning unless var is also defined.
 */
public void setScope(String scope) {
    this.scope = TagUtils.getScope(scope);
}

/**
 * Set the scope to export the URL variable to. This attribute has no
 * meaning unless var is also defined.
 */
public void setScope(String scope) {
    this.scope = TagUtils.getScope(scope);
}

/**
 * Set the scope to export the evaluation result to.
 * This attribute has no meaning unless var is also defined.
 */
public void setScope(String scope) {
    this.scope = TagUtils.getScope(scope);
}