C++ DomElement::callMethod方法代码示例

void WContainerWidget::rootAsJavaScript(WApplication *app, std::ostream& out,
					bool all)
{
  std::vector<WWidget *> *toAdd
    = all ? children_ : (transientImpl_ ? &transientImpl_->addedChildren_ : 0);

  if (toAdd)
    for (unsigned i = 0; i < toAdd->size(); ++i) {
      DomElement *c = (*toAdd)[i]->createSDomElement(app);

      app->streamBeforeLoadJavaScript(out, false);

      c->callMethod("omousemove=function(e) {"
		    "if (!e) e = window.event;"
		    "return " + app->javaScriptClass()
		    + "._p_.dragDrag(event); }");
      c->callMethod("mouseup=function(e) {"
		    "if (!e) e = window.event;"
		    "return " + app->javaScriptClass()
		  + "._p_.dragEnd(event);}");
      c->callMethod("dragstart=function(){return false;}");
      c->asJavaScript(out);
      delete c;
    }

  if (transientImpl_)
    transientImpl_->addedChildren_.clear();

  if (!all) {
    /* Note: we ignore rendering of deletion of a bound widget... */
  }

  // FIXME
  propagateRenderOk(false);
}

void WFileUpload::updateDom(DomElement& element, bool all)
{
  bool containsProgress = progressBar_ && progressBar_->parent() == this;
  DomElement *inputE = 0;

  if (element.type() != DomElement_INPUT
      && flags_.test(BIT_DO_UPLOAD)
      && containsProgress && !progressBar_->isRendered())
    element.addChild(progressBar_->createSDomElement(WApplication::instance()));

  // upload() + disable() does not work. -- fix after this release,
  // change order of javaScript_ and properties rendering in DomElement

  if (fileUploadTarget_ && flags_.test(BIT_DO_UPLOAD)) {
    element.callMethod("submit()");
    flags_.reset(BIT_DO_UPLOAD);

    if (containsProgress) {
      inputE = DomElement::getForUpdate("in" + id(), DomElement_INPUT);
      inputE->setProperty(PropertyStyleDisplay, "none");
    }
  }

  if (flags_.test(BIT_ENABLED_CHANGED)) {
    if (!inputE)
      inputE = DomElement::getForUpdate("in" + id(), DomElement_INPUT);

    if (isDisabled())
      inputE->callMethod("disabled=true");
    else
      inputE->callMethod("disabled=false");

    flags_.reset(BIT_ENABLED_CHANGED);
  }

  EventSignal<> *change = voidEventSignal(CHANGE_SIGNAL, false);
  if (change && change->needsUpdate(all)) {
    if (!inputE)
      inputE = DomElement::getForUpdate("in" + id(), DomElement_INPUT);

    updateSignalConnection(*inputE, *change, "change", all);
  }

  if (inputE)
    element.addChild(inputE);

  WWebWidget::updateDom(element, all);
}

void WSelectionBox::updateDom(DomElement& element, bool all)
{
  if (configChanged_ || all) {
    element.setAttribute("size", std::to_string(verticalSize_));

    if (!all || (selectionMode_ == SelectionMode::Extended)) {
      element.setProperty(Property::Multiple,
			  selectionMode_ == SelectionMode::Extended
			  ? "true" : "false");
      if (!all)
	selectionChanged_ = true;
    }

    configChanged_ = false;
  }

  if (selectionMode_ == SelectionMode::Extended) {
    if (selectionChanged_ && !all) {
      for (int i = 0; i < count(); ++i) {
	element.callMethod("options[" + std::to_string(i) + "].selected="
			   + (isSelected(i) ? "true" : "false"));
      }
    }
    selectionChanged_ = false;
  }

  WComboBox::updateDom(element, all);
}

void WWidgetVectorPainter::updateContents(std::vector<DomElement *>& result,
					  WPaintDevice *device)
{
  WVectorImage *vectorDevice = dynamic_cast<WVectorImage *>(device);

  if (widget_->repaintFlags_ & PaintUpdate) {
    DomElement *painter = DomElement::updateGiven
      (WT_CLASS ".getElement('p" + widget_->id()+ "').firstChild",
       DomElement_DIV);

    painter->setProperty(PropertyAddedInnerHTML, vectorDevice->rendered());

    WApplication *app = WApplication::instance();
    if (app->environment().agentIsOpera())
      painter->callMethod("forceRedraw();");

    result.push_back(painter);
  } else {
    DomElement *canvas = DomElement::getForUpdate
      ('p' + widget_->id(), DomElement_DIV);

    /*
     * In fact, we should use another property, since we could be using
     * document.importNode() instead of myImportNode() since the xml does not
     * need to be interpreted as HTML...
     */
    canvas->setProperty(PropertyInnerHTML, vectorDevice->rendered());
    result.push_back(canvas);
  }

  widget_->sizeChanged_ = false;

  delete device;
}

void FlexLayoutImpl::updateDom(DomElement& parent)
{
  WApplication *app = WApplication::instance();

  DomElement *div = DomElement::getForUpdate(elId_, DomElementType::DIV);

  Orientation orientation = getOrientation();

  std::vector<int> orderedInserts;
  for (unsigned i = 0; i < addedItems_.size(); ++i)
    orderedInserts.push_back(indexOf(addedItems_[i], orientation));

  Utils::sort(orderedInserts);

  int totalStretch = getTotalStretch(orientation);

  for (unsigned i = 0; i < orderedInserts.size(); ++i) {
    int pos = orderedInserts[i];
    DomElement *el = createElement(orientation, pos, totalStretch, app);
    div->insertChildAt(el, pos);
  }

  addedItems_.clear();

  for (unsigned i = 0; i < removedItems_.size(); ++i)
    div->callJavaScript(WT_CLASS ".remove('" + removedItems_[i] + "');",
			true);

  removedItems_.clear();

  WStringStream js;
  js << "layout.adjust(" << grid_.horizontalSpacing_ << ")";
  div->callMethod(js.str());

  parent.addChild(div);
}

DomElement *FlexLayoutImpl::createDomElement(DomElement *parent,
					     bool fitWidth, bool fitHeight,
					     WApplication *app)
{
  addedItems_.clear();
  removedItems_.clear();

  int margin[] = { 0, 0, 0, 0 };

  DomElement *result;

  if (layout()->parentLayout() == nullptr) {
    /*
     * If it is a top-level layout (as opposed to a nested layout),
     * configure overflow of the container.
     */
    if (container() == app->root()) {
      /*
       * Reset body,html default paddings and so on if we are doing layout
       * in the entire document.
       */
      app->setBodyClass(app->bodyClass() + " Wt-layout");
      app->setHtmlClass(app->htmlClass() + " Wt-layout");

      parent->setProperty(Property::StyleBoxSizing, "border-box");
    }

#ifndef WT_TARGET_JAVA
    layout()->getContentsMargins(margin + 3, margin, margin + 1, margin + 2);
#else // WT_TARGET_JAVA
    margin[3] = layout()->getContentsMargin(Side::Left);
    margin[0] = layout()->getContentsMargin(Side::Top);
    margin[1] = layout()->getContentsMargin(Side::Right);
    margin[2] = layout()->getContentsMargin(Side::Bottom);
#endif // WT_TARGET_JAVA

    Orientation orientation = getOrientation();

    if (orientation == Orientation::Horizontal) {
      margin[3] = std::max(0, margin[3] - (grid_.horizontalSpacing_) / 2);
      margin[1] = std::max(0, margin[1] - (grid_.horizontalSpacing_ + 1) / 2);
    } else {
      margin[0] = std::max(0, margin[0] - (grid_.verticalSpacing_) / 2);
      margin[2] = std::max(0, margin[2] - (grid_.horizontalSpacing_ + 1) / 2);
    }

    ResizeSensor::applyIfNeeded(container());
    container()->setFlexBox(true);

    result = parent;
    elId_ = container()->id();
  } else {
    result = DomElement::createNew(DomElementType::DIV);
    elId_ = id();
    result->setId(elId_);
  }

  if (margin[0] != 0 || margin[1] != 0 || margin[2] != 0 || margin[3] != 0) {
    WStringStream paddingProperty;
    paddingProperty << margin[0] << "px " << margin[1] << "px "
		    << margin[2] << "px " << margin[3] << "px";
    result->setProperty(Property::StylePadding, paddingProperty.str());
  }

  // FIXME minsize/maxsize

  result->setProperty(Property::StyleDisplay, styleDisplay());
  result->setProperty(Property::StyleFlexFlow, styleFlex());

  Orientation orientation = getOrientation();

  int c = count(orientation);

  int totalStretch = getTotalStretch(orientation);

  for (int i = 0; i < c; ++i) {
    DomElement *el = createElement(orientation, i, totalStretch, app);
    result->addChild(el);
  }

  WStringStream js;
  js << "layout=new " WT_CLASS ".FlexLayout("
     << app->javaScriptClass() << ",'" << elId_ << "');";
  result->callMethod(js.str());

  return result;
}