@Test
public void clone_Deep() {
// Arrange
AnchorElement child = Document.get().createAnchorElement();
child.setInnerText("child inner text");
child.getStyle().setBackgroundColor("black");
n.appendChild(child);
// Act
DivElement newNode = n.cloneNode(true).cast();
// Assert
assertEquals(Node.ELEMENT_NODE, newNode.getNodeType());
DivElement source = n.cast();
assertEquals(source.getInnerText(), newNode.getInnerText());
assertEquals(source.getInnerHTML(), newNode.getInnerHTML());
assertEquals(source.toString(), newNode.toString());
assertNull(newNode.getParentNode());
assertEquals(n.getChildNodes().getLength(), newNode.getChildNodes().getLength());
assertEquals(Node.ELEMENT_NODE, newNode.getChildNodes().getItem(0).getNodeType());
AnchorElement childElement = newNode.getChildNodes().getItem(0).cast();
assertEquals("child inner text", childElement.getInnerText());
Style newStyle = childElement.getStyle();
assertTrue(newStyle != child.getStyle());
assertEquals("black", newStyle.getBackgroundColor());
}
private Element getLastChildElement(Element parent) {
Node lastTab = parent.getLastChild();
while (lastTab.getNodeType() != Node.ELEMENT_NODE) {
lastTab = lastTab.getPreviousSibling();
}
return Element.as(lastTab);
}
/**
* Inserts a paragraph before or after the table containing the selection.
*
* <p>We decided to use Control/Meta+UpArrow for inserting a paragraph before a table and
* Control/Meta+DownArrow for inserting a paragraph after a table. Here's the rationale:
*
* <ul>
* <li>We can't reliably detect if the user can place the caret before of after a table. Our
* playground is the DOM tree which we fully control but in the end the browser decides how
* to render each node. The table can have previous siblings or previous nodes in the DOM
* tree but they may not be rendered at all (as it happens with HTML garbage like empty
* elements) or not rendered before/after the table (as it happens with absolute positioned
* elements). So we have to insert the paragraph each time.
* <li>We can't use the same key to insert a paragraph before and after the table because we can
* have a table with just one empty cell. So we can't rely on the Enter key.
* <li>We can't use just the navigation keys because they would insert a paragraph before/after
* the table even when the user can navigate outside of the table.
* </ul>
*
* We can replace the Ctrl with Alt. The idea is to use the Up/Down arrow keys with a modifier.
* They will work form any table cell.
*
* @param event the native event that was fired
* @param before {@code true} to insert a paragraph before the table, {@code false} to insert a
* paragraph after the table
*/
protected void navigateOutsideTableCell(Event event, boolean before) {
// Navigate only if the Control or Meta modifiers are pressed along with the Up/Down arrow keys.
if (event.getAltKey() || event.getShiftKey() || !(event.getCtrlKey() ^ event.getMetaKey())) {
return;
}
Selection selection = getTextArea().getDocument().getSelection();
if (selection.getRangeCount() == 0) {
return;
} else {
selection.collapseToStart();
}
Range range = selection.getRangeAt(0);
Node ancestor = domUtils.getFirstAncestor(range.getStartContainer(), "table");
if (ancestor == null) {
return;
}
event.xPreventDefault();
Document document = getTextArea().getDocument();
Node paragraph = document.createPElement();
paragraph.appendChild(document.createTextNode(""));
if (before) {
ancestor.getParentNode().insertBefore(paragraph, ancestor);
} else {
domUtils.insertAfter(paragraph, ancestor);
}
range.selectNodeContents(paragraph.getFirstChild());
selection.removeAllRanges();
selection.addRange(range);
}
/**
* Overwrites the default rich text area behavior when the Tab key is being pressed.
*
* @param event the native event that was fired
*/
protected void onTab(Event event) {
Selection selection = getTextArea().getDocument().getSelection();
if (selection.getRangeCount() == 0) {
return;
}
// Prevent the default browser behavior.
event.xPreventDefault();
// See in which context the tab key has been pressed.
Range range = selection.getRangeAt(0);
List<String> specialTags = Arrays.asList(new String[] {LI, TD, TH});
Node ancestor = range.getStartContainer();
int index = specialTags.indexOf(ancestor.getNodeName().toLowerCase());
while (ancestor != null && index < 0) {
ancestor = ancestor.getParentNode();
if (ancestor != null) {
index = specialTags.indexOf(ancestor.getNodeName().toLowerCase());
}
}
// Handle the tab key depending on the context.
switch (index) {
case 0:
onTabInListItem(event, ancestor);
break;
case 1:
case 2:
onTabInTableCell(event, (TableCellElement) ancestor);
break;
default:
onTabDefault(event);
break;
}
}
/**
* Tab key has been pressed inside a table cell.
*
* @param event the native event that was fired
* @param cell The table cell in which the tab key has been pressed.
*/
protected void onTabInTableCell(Event event, TableCellElement cell) {
Node nextCell = event.getShiftKey() ? cell.getPreviousCell() : cell.getNextCell();
if (nextCell == null) {
if (event.getShiftKey()) {
return;
} else {
getTextArea().getCommandManager().execute(new Command("insertrowafter"));
nextCell = cell.getNextCell();
}
}
Selection selection = getTextArea().getDocument().getSelection();
Range range = selection.getRangeAt(0);
// Place the caret at the beginning of the next cell.
Node leaf = domUtils.getFirstLeaf(nextCell);
if (leaf == nextCell || leaf.getNodeType() == Node.TEXT_NODE) {
range.setStart(leaf, 0);
} else {
range.setStartBefore(leaf);
}
range.collapse(true);
selection.removeAllRanges();
selection.addRange(range);
}
/**
* @param parent the parent node
* @param child the child node
* @return the position of the child node within the array of children or -1 if there is no parent
* child relationship
*/
public static int indexOf(Node parent, Node child) {
for (int i = 0; i < parent.getChildCount(); i++) {
if (child.equals(parent.getChild(i))) {
return i;
}
}
return -1;
}
@PatchMethod
static Element getFirstChild(Element elem) {
Node firstChild = elem.getFirstChildElement();
if (firstChild != null) {
return firstChild.cast();
} else {
return null;
}
}
private void getEmptyPseudo(JsNodeArray previousMatch, JsNodeArray matchingElms) {
Node previous;
for (int q = 0, qlen = previousMatch.size(); q < qlen; q++) {
previous = previousMatch.getNode(q);
if (!previous.hasChildNodes()) {
matchingElms.addNode(previous);
}
}
}
@Test
public void is() {
// Arrange
NodeList<OptionElement> list = JavaScriptObjects.newNodeList();
// Act & Assert
assertFalse("null is not a DOM node", Node.is(null));
assertFalse("NodeList is not a DOM node", Node.is(list));
assertTrue("AnchorElement is a DOM node", Node.is(Document.get().createAnchorElement()));
}
/**
* @param root the root node
* @param node the node to start from
* @return a list of nodes starting with the parent closest to the root and ending with the given
* node
*/
private List<Node> getParents(Element root, Node node) {
ArrayList<Node> result = new ArrayList<Node>();
while ((node != null) && !node.equals(root)) {
result.add(node);
node = node.getParentNode();
}
Collections.reverse(result);
return result;
}
private static void getSiblingNodes(
JsNodeArray matchingElms, JsObjectArray<String> nextTag, JsRegexp nextRegExp, Node prevRef) {
while (JsUtils.truth(prevRef = SelectorEngine.getNextSibling(prevRef))
&& prevRef.getNodeType() != Node.ELEMENT_NODE) {}
if (JsUtils.truth(prevRef)) {
if (!JsUtils.truth(nextTag) || nextRegExp.test(prevRef.getNodeName())) {
matchingElms.addNode(prevRef);
}
}
}
private static void getDescendantNodes(
JsNodeArray matchingElms, String nextTagStr, Node prevRef) {
NodeList<Element> children = getElementsByTagName(nextTagStr, prevRef);
for (int k = 0, klen = children.getLength(); k < klen; k++) {
Node child = children.getItem(k);
if (child.getParentNode() == prevRef) {
matchingElms.addNode(child);
}
}
}
public void setTag(String category) {
assert category != null;
assert rootElement.getChild(1) != null;
Node node = rootElement.getChild(1);
node.removeAllChildren();
Node text = JSFunctions.createTextNode(category);
node.insertFirst(text);
assert rootElement.getChild(1) != null;
assert rootElement.getChild(1).getChild(0) != null;
}
@Test
public void isOrHasChild_hasChild() {
// Arrange
Element a = Document.get().createAnchorElement();
Element div = Document.get().createDivElement();
div.appendChild(a);
n.appendChild(div);
// Act & Assert
assertTrue(n.isOrHasChild(a));
}
/** {@inheritDoc} */
@Override
public void assertHealthy(ContentElement paragraph) {
ContentView renderedContent = paragraph.getRenderedContentView();
if (renderedContent.getFirstChild(paragraph) != null) {
Node child = paragraph.getImplNodelet().getFirstChild();
while (child != null) {
assert !isSpacer(child) : "Non-empty paragraph should not have spacer";
child = child.getNextSibling();
}
}
super.assertHealthy(paragraph);
}
@Test
public void getParentNode() {
// Pre-Assert
assertNull(n.getParentNode());
// Arrange
BaseElement be = Document.get().createBaseElement();
n.appendChild(be);
// Act & assert
assertEquals(n, be.getParentNode());
}
@Test
public void hasChildNodes() {
// Pre-Assert
assertFalse("New element should not have child nodes", n.hasChildNodes());
// Arrange
BaseElement be = Document.get().createBaseElement();
n.appendChild(be);
// Act & Assert
assertTrue("Element should have a child node", n.hasChildNodes());
}
@Test
public void nodeValue_Element() {
// Arrange
Node doucmentNode = Document.get().getDocumentElement();
// Pre-Assert
assertNull(doucmentNode.getNodeValue());
// Act
doucmentNode.setNodeValue("node");
// Assert
assertNull(doucmentNode.getNodeValue());
}
/** Improves splitter visibility. */
private void tuneSplitter() {
NodeList<Node> nodes = splitLayoutPanel.getElement().getChildNodes();
for (int i = 0; i < nodes.getLength(); i++) {
Node node = nodes.getItem(i);
if (node.hasChildNodes()) {
com.google.gwt.dom.client.Element el = node.getFirstChild().cast();
if ("gwt-SplitLayoutPanel-HDragger".equals(el.getClassName())) {
tuneSplitter(el);
return;
}
}
}
}
@Test
public void getPreviousSibling() {
// Pre-Assert
assertNull(n.getPreviousSibling());
// Arrange
ButtonElement be0 = Document.get().createPushButtonElement();
ButtonElement be1 = Document.get().createPushButtonElement();
n.appendChild(be0);
n.appendChild(be1);
// Act & Assert
assertEquals(be0, be1.getPreviousSibling());
}
private void commitPosition(int pos) {
lastElementX_ = pos;
// check to see if we're overlapping with another tab
for (int i = 0; i < dragTabsHost_.getChildCount(); i++) {
// skip non-element DOM nodes
Node node = dragTabsHost_.getChild(i);
if (node.getNodeType() != Node.ELEMENT_NODE) {
continue;
}
// skip the current candidate (no point in testing it for swap)
if (i == candidatePos_) {
continue;
}
// skip the element we're dragging and elements that are not tabs
Element ele = (Element) node;
if (ele == dragElement_ || ele.getClassName().indexOf("gwt-TabLayoutPanelTab") < 0) {
continue;
}
int left = DomUtils.leftRelativeTo(dragTabsHost_, ele);
int right = left + ele.getClientWidth();
int minOverlap = Math.min(initDragWidth_ / 2, ele.getClientWidth() / 2);
// a little complicated: compute the number of overlapping pixels
// with this element; if the overlap is more than half of our width
// (or the width of the candidate), it's swapping time
if (Math.min(lastElementX_ + initDragWidth_, right) - Math.max(lastElementX_, left)
>= minOverlap) {
dragTabsHost_.removeChild(dragPlaceholder_);
if (candidatePos_ > i) {
dragTabsHost_.insertBefore(dragPlaceholder_, ele);
} else {
dragTabsHost_.insertAfter(dragPlaceholder_, ele);
}
candidatePos_ = i;
// account for the extra element when moving to the right of the
// original location
if (dragElement_ != null && startPos_ != null) {
destPos_ = startPos_ <= candidatePos_ ? candidatePos_ - 1 : candidatePos_;
} else {
destPos_ = candidatePos_;
}
}
}
}
@PatchMethod
static void setNodeValue(Node node, String nodeValue) {
switch (node.getNodeType()) {
case Node.DOCUMENT_NODE:
// nothing to do
break;
case Node.ELEMENT_NODE:
// nothing to do
break;
case Node.TEXT_NODE:
Text text = node.cast();
text.setData(nodeValue);
break;
}
}
@PatchMethod
static String getNodeValue(Node node) {
switch (node.getNodeType()) {
case Node.DOCUMENT_NODE:
return null;
case Node.ELEMENT_NODE:
return null;
case Node.TEXT_NODE:
Text text = node.cast();
return text.getData();
default:
throw new GwtTestDomException(
"Invalid Node type (not a Document / Element / Text : " + node.getNodeType());
}
}
@Test
public void removeChild() {
// Arrange
BaseElement c0 = Document.get().createBaseElement();
ButtonElement c1 = Document.get().createPushButtonElement();
n.appendChild(c0);
n.appendChild(c1);
// Act
n.removeChild(c1);
// Assert
assertEquals(1, n.getChildNodes().getLength());
assertEquals(c0, n.getChildNodes().getItem(0));
}
@PatchMethod
static Node getNextSibling(Node node) {
Node parent = node.getParentNode();
if (parent == null) return null;
List<Node> list = getChildNodeList(parent);
for (int i = 0; i < list.size(); i++) {
Node current = list.get(i);
if (current.equals(node) && i < list.size() - 1) {
return list.get(i + 1);
}
}
return null;
}
@Test
public void isOrHasChild_notChild() {
// Arrange
Element a = Document.get().createAnchorElement();
// Act & Assert
assertFalse(n.isOrHasChild(a));
}
/**
* Specific function which does not inspect deep.
*
* @param tag
* @return
*/
private static NodeList<Element> getElementByTagName(TableElement e, String tagName) {
NodeList<Node> childs = e.getChildNodes();
List<Element> list = new ArrayList<Element>();
for (int i = 0; i < childs.getLength(); i++) {
Node n = childs.getItem(i);
if (Element.is(n)) {
Element childElement = n.cast();
if (tagName.equalsIgnoreCase(childElement.getTagName())) {
list.add(childElement);
}
}
}
return JavaScriptObjects.newNodeList(list);
}
/**
* @param container A block level element containing the start of the given range.
* @param range A DOM range.
* @return true if the start of the given range is at the beginning of its block level container.
*/
protected boolean isAtStart(Node container, Range range) {
if (!container.hasChildNodes()) {
return true;
}
if (range.getStartOffset() > 0) {
return false;
}
return domUtils.getFirstLeaf(container) == domUtils.getFirstLeaf(range.getStartContainer());
}
private static void setupChildNodes(Node newNode, Node oldNode, boolean deep) {
List<Node> childs = getChildNodeList(oldNode);
if (deep) {
// copy all child nodes
for (Node child : childs) {
appendChild(newNode, cloneNode(child, true));
}
} else {
// only copy the TextNode if exists
for (Node child : childs) {
if (Node.TEXT_NODE == child.getNodeType()) {
appendChild(newNode, Document.get().createTextNode(child.getNodeValue()));
break;
}
}
}
}
@PatchMethod
static String getNodeName(Node node) {
switch (node.getNodeType()) {
case Node.DOCUMENT_NODE:
return "#document";
case Node.ELEMENT_NODE:
Element e = node.cast();
return e.getTagName();
case Node.TEXT_NODE:
return "#text";
case com.google.gwt.xml.client.Node.ATTRIBUTE_NODE:
return JavaScriptObjects.getString(node, JsoProperties.XML_ATTR_NAME);
default:
throw new GwtTestDomException(
"Invalid Node type (not a Document / Element / Text / Attribute) : "
+ node.getNodeType());
}
}
