htmlelement.cpp

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}

void HTMLElement::setOuterHTML(const String& html, ExceptionCode& ec)
{
    Node* p = parent();
    if (!p || !p->isHTMLElement()) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return;
    }

    HTMLElement* parent = static_cast<HTMLElement*>(p);
    RefPtr<DocumentFragment> fragment = parent->createContextualFragment(html);
    if (!fragment) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return;
    }

    // FIXME: Why doesn't this have code to merge neighboring text nodes the way setOuterText does?

    parent->replaceChild(fragment.release(), this, ec);
}

void HTMLElement::setInnerText(const String& text, ExceptionCode& ec)
{
    // follow the IE specs about when this is allowed
    if (endTagRequirement() == TagStatusForbidden) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return;
    }
    if (hasLocalName(colTag) || hasLocalName(colgroupTag) || hasLocalName(framesetTag) ||
        hasLocalName(headTag) || hasLocalName(htmlTag) || hasLocalName(tableTag) || 
        hasLocalName(tbodyTag) || hasLocalName(tfootTag) || hasLocalName(theadTag) ||
        hasLocalName(trTag)) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return;
    }

    // FIXME: This doesn't take whitespace collapsing into account at all.

    if (!text.contains('\n') && !text.contains('\r')) {
        if (text.isEmpty()) {
            removeChildren();
            return;
        }
        replaceChildrenWithText(this, text, ec);
        return;
    }

    // FIXME: Do we need to be able to detect preserveNewline style even when there's no renderer?
    // FIXME: Can the renderer be out of date here? Do we need to call updateRendering?
    // For example, for the contents of textarea elements that are display:none?
    RenderObject* r = renderer();
    if (r && r->style()->preserveNewline()) {
        if (!text.contains('\r')) {
            replaceChildrenWithText(this, text, ec);
            return;
        }
        String textWithConsistentLineBreaks = text;
        textWithConsistentLineBreaks.replace("\r\n", "\n");
        textWithConsistentLineBreaks.replace('\r', '\n');
        replaceChildrenWithText(this, textWithConsistentLineBreaks, ec);
        return;
    }

    // Add text nodes and <br> elements.
    ec = 0;
    RefPtr<DocumentFragment> fragment = new DocumentFragment(document());
    int lineStart = 0;
    UChar prev = 0;
    int length = text.length();
    for (int i = 0; i < length; ++i) {
        UChar c = text[i];
        if (c == '\n' || c == '\r') {
            if (i > lineStart) {
                fragment->appendChild(new Text(document(), text.substring(lineStart, i - lineStart)), ec);
                if (ec)
                    return;
            }
            if (!(c == '\n' && i != 0 && prev == '\r')) {
                fragment->appendChild(new HTMLBRElement(brTag, document()), ec);
                if (ec)
                    return;
            }
            lineStart = i + 1;
        }
        prev = c;
    }
    if (length > lineStart)
        fragment->appendChild(new Text(document(), text.substring(lineStart, length - lineStart)), ec);
    replaceChildrenWithFragment(this, fragment.release(), ec);
}

void HTMLElement::setOuterText(const String &text, ExceptionCode& ec)
{
    // follow the IE specs about when this is allowed
    if (endTagRequirement() == TagStatusForbidden) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return;
    }
    if (hasLocalName(colTag) || hasLocalName(colgroupTag) || hasLocalName(framesetTag) ||
        hasLocalName(headTag) || hasLocalName(htmlTag) || hasLocalName(tableTag) || 
        hasLocalName(tbodyTag) || hasLocalName(tfootTag) || hasLocalName(theadTag) ||
        hasLocalName(trTag)) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return;
    }

    Node* parent = parentNode();
    if (!parent) {
        ec = NO_MODIFICATION_ALLOWED_ERR;
        return;
    }

    // FIXME: This creates a new text node even when the text is empty.
    // FIXME: This creates a single text node even when the text has CR and LF
    // characters in it. Instead it should create <br> elements.
    RefPtr<Text> t = new Text(document(), text);
    ec = 0;
    parent->replaceChild(t, this, ec);
    if (ec)
        return;

    // is previous node a text node? if so, merge into it
    Node* prev = t->previousSibling();
    if (prev && prev->isTextNode()) {
        Text* textPrev = static_cast<Text*>(prev);
        textPrev->appendData(t->data(), ec);
        if (ec)
            return;
        t->remove(ec);
        if (ec)
            return;
        t = textPrev;
    }

    // is next node a text node? if so, merge it in
    Node* next = t->nextSibling();
    if (next && next->isTextNode()) {
        Text* textNext = static_cast<Text*>(next);
        t->appendData(textNext->data(), ec);
        if (ec)
            return;
        textNext->remove(ec);
        if (ec)
            return;
    }
}

Node* HTMLElement::insertAdjacent(const String& where, Node* newChild, ExceptionCode& ec)
{
    // In Internet Explorer if the element has no parent and where is "beforeBegin" or "afterEnd",
    // a document fragment is created and the elements appended in the correct order. This document
    // fragment isn't returned anywhere.
    //
    // This is impossible for us to implement as the DOM tree does not allow for such structures,
    // Opera also appears to disallow such usage.

    if (equalIgnoringCase(where, "beforeBegin")) {
        if (Node* p = parent())
            return p->insertBefore(newChild, this, ec) ? newChild : 0;
        return 0;
    }

    if (equalIgnoringCase(where, "afterBegin"))
        return insertBefore(newChild, firstChild(), ec) ? newChild : 0;

    if (equalIgnoringCase(where, "beforeEnd"))
        return appendChild(newChild, ec) ? newChild : 0;

    if (equalIgnoringCase(where, "afterEnd")) {
        if (Node* p = parent())
            return p->insertBefore(newChild, nextSibling(), ec) ? newChild : 0;
        return 0;
    }
    
    // IE throws COM Exception E_INVALIDARG; this is the best DOM exception alternative
    ec = NOT_SUPPORTED_ERR;
    return 0;
}

Element* HTMLElement::insertAdjacentElement(const String& where, Element* newChild, ExceptionCode& ec)
{
    if (!newChild) {
        // IE throws COM Exception E_INVALIDARG; this is the best DOM exception alternative
        ec = TYPE_MISMATCH_ERR;
        return 0;
    }

    Node* returnValue = insertAdjacent(where, newChild, ec);
    ASSERT(!returnValue || returnValue->isElementNode());
    return static_cast<Element*>(returnValue); 
}

void HTMLElement::insertAdjacentHTML(const String& where, const String& html, ExceptionCode& ec)
{
    RefPtr<DocumentFragment> fragment = document()->createDocumentFragment();
    if (document()->isHTMLDocument())
         parseHTMLDocumentFragment(html, fragment.get());
    else {
        if (!parseXMLDocumentFragment(html, fragment.get(), this))
            // FIXME: We should propagate a syntax error exception out here.
            return;
    }

    insertAdjacent(where, fragment.get(), ec);
}

void HTMLElement::insertAdjacentText(const String& where, const String& text, ExceptionCode& ec)
{
    RefPtr<Text> textNode = document()->createTextNode(text);
    insertAdjacent(where, textNode.get(), ec);
}

void HTMLElement::addHTMLAlignment(MappedAttribute* attr)
{
    addHTMLAlignmentToStyledElement(this, attr);
}

void HTMLElement::addHTMLAlignmentToStyledElement(StyledElement* element, MappedAttribute* attr)
{
    // vertical alignment with respect to the current baseline of the text
    // right or left means floating images
    int floatValue = CSSValueInvalid;
    int verticalAlignValue = CSSValueInvalid;

    const AtomicString& alignment = attr->value();
    if (equalIgnoringCase(alignment, "absmiddle"))
        verticalAlignValue = CSSValueMiddle;
    else if (equalIgnoringCase(alignment, "absbottom"))
        verticalAlignValue = CSSValueBottom;
    else if (equalIgnoringCase(alignment, "left")) {
        floatValue = CSSValueLeft;
        verticalAlignValue = CSSValueTop;
    } else if (equalIgnoringCase(alignment, "right")) {
        floatValue = CSSValueRight;
        verticalAlignValue = CSSValueTop;
    } else if (equalIgnoringCase(alignment, "top"))
        verticalAlignValue = CSSValueTop;
    else if (equalIgnoringCase(alignment, "middle"))
        verticalAlignValue = CSSValueWebkitBaselineMiddle;
    else if (equalIgnoringCase(alignment, "center"))
        verticalAlignValue = CSSValueMiddle;
    else if (equalIgnoringCase(alignment, "bottom"))
        verticalAlignValue = CSSValueBaseline;
    else if (equalIgnoringCase(alignment, "texttop"))
        verticalAlignValue = CSSValueTextTop;

    if (floatValue != CSSValueInvalid)
        element->addCSSProperty(attr, CSSPropertyFloat, floatValue);

    if (verticalAlignValue != CSSValueInvalid)
        element->addCSSProperty(attr, CSSPropertyVerticalAlign, verticalAlignValue);
}

bool HTMLElement::isFocusable() const
{
    return Element::isFocusable() || (isContentEditable() && parent() && !parent()->isContentEditable());
}

bool HTMLElement::isContentEditable() const 
{
    if (document()->frame() && document()->frame()->isContentEditable())
        return true;

    // FIXME: this is a terrible thing to do here:
    // https://bugs.webkit.org/show_bug.cgi?id=21834
    document()->updateRendering();

    if (!renderer()) {
        if (parentNode())
            return parentNode()->isContentEditable();
        else
            return false;
    }
    
    return renderer()->style()->userModify() == READ_WRITE || renderer()->style()->userModify() == READ_WRITE_PLAINTEXT_ONLY;
}

bool HTMLElement::isContentRichlyEditable() const
{
    if (document()->frame() && document()->frame()->isContentEditable())
        return true;

    document()->updateRendering();

    if (!renderer()) {
        if (parentNode())
            return parentNode()->isContentEditable();
        else
            return false;
    }
    
    return renderer()->style()->userModify() == READ_WRITE;
}

String HTMLElement::contentEditable() const 
{
    document()->updateRendering();

    if (!renderer())
        return "false";
    
    switch (renderer()->style()->userModify()) {
        case READ_WRITE:
            return "true";
        case READ_ONLY:
            return "false";
        case READ_WRITE_PLAINTEXT_ONLY:
            return "plaintext-only";
        default:
            return "inherit";
    }
}

void HTMLElement::setContentEditable(MappedAttribute* attr) 
{
    const AtomicString& enabled = attr->value();
    if (enabled.isEmpty() || equalIgnoringCase(enabled, "true")) {
        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueReadWrite);
        addCSSProperty(attr, CSSPropertyWordWrap, CSSValueBreakWord);
        addCSSProperty(attr, CSSPropertyWebkitNbspMode, CSSValueSpace);
        addCSSProperty(attr, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace);
    } else if (equalIgnoringCase(enabled, "false")) {
        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueReadOnly);
        attr->decl()->removeProperty(CSSPropertyWordWrap, false);
        attr->decl()->removeProperty(CSSPropertyWebkitNbspMode, false);
        attr->decl()->removeProperty(CSSPropertyWebkitLineBreak, false);
    } else if (equalIgnoringCase(enabled, "inherit")) {
        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueInherit);
        attr->decl()->removeProperty(CSSPropertyWordWrap, false);
        attr->decl()->removeProperty(CSSPropertyWebkitNbspMode, false);
        attr->decl()->removeProperty(CSSPropertyWebkitLineBreak, false);
    } else if (equalIgnoringCase(enabled, "plaintext-only")) {
        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueReadWritePlaintextOnly);
        addCSSProperty(attr, CSSPropertyWordWrap, CSSValueBreakWord);
        addCSSProperty(attr, CSSPropertyWebkitNbspMode, CSSValueSpace);
        addCSSProperty(attr, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace);