C++ OTMLNodePtr::merge方法代码示例

void OTMLNode::addChild(const OTMLNodePtr& newChild)
{
    // replace is needed when the tag is marked as unique
    if(newChild->hasTag()) {
        for(const OTMLNodePtr& node : m_children) {
            if(node->tag() == newChild->tag() && (node->isUnique() || newChild->isUnique())) {
                newChild->setUnique(true);

                if(node->hasChildren() && newChild->hasChildren()) {
                    OTMLNodePtr tmpNode = node->clone();
                    tmpNode->merge(newChild);
                    newChild->copy(tmpNode);
                }

                replaceChild(node, newChild);

                // remove any other child with the same tag
                auto it = m_children.begin();
                while(it != m_children.end()) {
                    OTMLNodePtr node = (*it);
                    if(node != newChild && node->tag() == newChild->tag()) {
                        it = m_children.erase(it);
                    } else
                        ++it;
                }
                return;
            }
        }
    }

    m_children.push_back(newChild);
}

UIWidgetPtr UIManager::createWidgetFromOTML(const OTMLNodePtr& widgetNode, const UIWidgetPtr& parent)
{
    OTMLNodePtr originalStyleNode = getStyle(widgetNode->tag());
    if(!originalStyleNode)
        stdext::throw_exception(stdext::format("'%s' is not a defined style", widgetNode->tag()));

    OTMLNodePtr styleNode = originalStyleNode->clone();
    styleNode->merge(widgetNode);

    std::string widgetType = styleNode->valueAt("__class");

    // call widget creation from lua
    UIWidgetPtr widget = g_lua.callGlobalField<UIWidgetPtr>(widgetType, "create");
    if(parent)
        parent->addChild(widget);

    if(widget) {
        widget->callLuaField("onCreate");

        widget->setStyleFromNode(styleNode);

        for(const OTMLNodePtr& childNode : styleNode->children()) {
            if(!childNode->isUnique()) {
                createWidgetFromOTML(childNode, widget);
                styleNode->removeChild(childNode);
            }
        }
    } else
        stdext::throw_exception(stdext::format("unable to create widget of type '%s'", widgetType));

    widget->callLuaField("onSetup");
    return widget;
}

void UIWidget::updateStyle()
{
    if(m_destroyed)
        return;

    if(m_loadingStyle && !m_updateStyleScheduled) {
        UIWidgetPtr self = static_self_cast<UIWidget>();
        g_dispatcher.addEvent([self] {
            self->m_updateStyleScheduled = false;
            self->updateStyle();
        });
        m_updateStyleScheduled = true;
        return;
    }

    if(!m_style)
        return;

    OTMLNodePtr newStateStyle = OTMLNode::create();

    // copy only the changed styles from default style
    if(m_stateStyle) {
        for(OTMLNodePtr node : m_stateStyle->children()) {
            if(OTMLNodePtr otherNode = m_style->get(node->tag()))
                newStateStyle->addChild(otherNode->clone());
        }
    }

    // checks for states combination
    for(const OTMLNodePtr& style : m_style->children()) {
        if(stdext::starts_with(style->tag(), "$")) {
            std::string statesStr = style->tag().substr(1);
            std::vector<std::string> statesSplit = stdext::split(statesStr, " ");

            bool match = true;
            for(std::string stateStr : statesSplit) {
                if(stateStr.length() == 0)
                    continue;

                bool notstate = (stateStr[0] == '!');
                if(notstate)
                    stateStr = stateStr.substr(1);

                bool stateOn = hasState(Fw::translateState(stateStr));
                if((!notstate && !stateOn) || (notstate && stateOn))
                    match = false;
            }

            // merge states styles
            if(match) {
                newStateStyle->merge(style);
            }
        }
    }

    //TODO: prevent setting already set proprieties

    applyStyle(newStateStyle);
    m_stateStyle = newStateStyle;
}

void UIManager::importStyleFromOTML(const OTMLNodePtr& styleNode)
{
    std::string tag = styleNode->tag();
    std::vector<std::string> split = stdext::split(tag, "<");
    if(split.size() != 2)
        throw OTMLException(styleNode, "not a valid style declaration");

    std::string name = split[0];
    std::string base = split[1];
    bool unique = false;

    stdext::trim(name);
    stdext::trim(base);

    if(name[0] == '#') {
        name = name.substr(1);
        unique = true;

        styleNode->setTag(name);
        styleNode->writeAt("__unique", true);
    }

    OTMLNodePtr oldStyle = m_styles[name];

    // Warn about redefined styles
    /*
    if(!g_app.isRunning() && (oldStyle && !oldStyle->valueAt("__unique", false))) {
        auto it = m_styles.find(name);
        if(it != m_styles.end())
            g_logger.warning(stdext::format("style '%s' is being redefined", name));
    }
    */

    if(!oldStyle || !oldStyle->valueAt("__unique", false) || unique) {
        OTMLNodePtr originalStyle = getStyle(base);
        if(!originalStyle)
            stdext::throw_exception(stdext::format("base style '%s', is not defined", base));
        OTMLNodePtr style = originalStyle->clone();
        style->merge(styleNode);
        style->setTag(name);
        m_styles[name] = style;
    }
}