Java Code Examples for com.vaadin.flow.dom.Element#insertChild()
The following examples show how to use
com.vaadin.flow.dom.Element#insertChild() .
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Example 1
Source File: HasOrderedComponents.java From flow with Apache License 2.0 | 6 votes |
/** * Replaces the component in the container with another one without changing * position. This method replaces component with another one is such way * that the new component overtakes the position of the old component. If * the old component is not in the container, the new component is added to * the container. If the both component are already in the container, their * positions are swapped. Component attach and detach events should be taken * care as with add and remove. * * @param oldComponent * the old component that will be replaced. Can be * <code>null</code>, which will make the newComponent to be * added to the layout without replacing any other * * @param newComponent * the new component to be replaced. Can be <code>null</code>, * which will make the oldComponent to be removed from the layout * without adding any other */ default void replace(Component oldComponent, Component newComponent) { if (oldComponent == null && newComponent == null) { // NO-OP return; } if (oldComponent == null) { add(newComponent); } else if (newComponent == null) { remove(oldComponent); } else { Element element = getElement(); int oldIndex = element.indexOfChild(oldComponent.getElement()); int newIndex = element.indexOfChild(newComponent.getElement()); if (oldIndex >= 0 && newIndex >= 0) { element.insertChild(oldIndex, newComponent.getElement()); element.insertChild(newIndex, oldComponent.getElement()); } else if (oldIndex >= 0) { element.setChild(oldIndex, newComponent.getElement()); } else { add(newComponent); } } }
Example 2
Source File: AddDivUI.java From flow with Apache License 2.0 | 5 votes |
private void addDiv() { Element bodyElement = getElement(); Element div = ElementFactory.createDiv("Hello world at " + System.currentTimeMillis() + " (" + msgId++ + ")"); bodyElement.insertChild(0, div); if (msgId % 100 == 0) { System.out.println("Pushed id " + msgId + " to " + ip); } // FIXME Enable when remove works // while (bodyElement.getChildCount() > 20) { // bodyElement.removeChild(20); // } }