com.google.gwt.dom.client.Element.hasAttribute()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中com.google.gwt.dom.client.Element.hasAttribute()方法的一些代码示例，展示了Element.hasAttribute()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Element.hasAttribute()方法的具体详情如下：
包路径：com.google.gwt.dom.client.Element
类名称：Element
方法名：hasAttribute

Element.hasAttribute介绍

[英]Determines whether an element has an attribute with a given name.

Note that IE, prior to version 8, will return false-positives for names that collide with element properties (e.g., style, width, and so forth).
[中]确定元素是否具有具有给定名称的属性。
请注意，对于与元素属性（例如样式、宽度等）冲突的名称，IE在版本8之前将返回误报。

代码示例

代码示例来源：origin: com.google.gwt/gwt-servlet

  1. /**
  2.  * Retrieves the root of a previously rendered element contained within the {@code parent}.
  3.  * The {@code parent} must either contain the previously rendered DOM structure as its only child,
  4.  * or point directly to the rendered element root.
  5.  * 
  6.  * @param parent element containing, or pointing to, a previously rendered DOM structure
  7.  * @param attribute attribute name that identifies the root of the DOM structure
  8.  * @return the root element of the previously rendered DOM structure or <code>null</code>
  9.  *         if {@code parent} does not contain a previously rendered element
  10.  * 
  11.  * @throws NullPointerException if {@code parent} == null
  12.  */
  13. private static Element findRootElementOrNull(Element parent, String attribute) {
  14.  if (parent == null) {
  15.   throw new NullPointerException("parent argument is null");
  16.  }
  17.  Element rendered;
  18.  if (parent.hasAttribute(attribute)) {
  19.   // The parent is the root
  20.   return parent;
  21.  } else if ((rendered = parent.getFirstChildElement()) != null
  22.    && rendered.hasAttribute(attribute)) {
  23.   // The first child is the root
  24.   return rendered;
  25.  } else {
  26.   return null;
  27.  }
  28. }

代码示例来源：origin: org.jboss.errai/errai-ui

  1. @Override
  2. public boolean hasAttribute(String name) {
  3.  return element.hasAttribute(name);
  4. }

代码示例来源：origin: errai/errai

  1. @Override
  2. public boolean hasAttribute(String name) {
  3.  return element.hasAttribute(name);
  4. }

代码示例来源：origin: org.vectomatic/lib-gwt-svg

  1. /**
  2.  * Determines whether an element has an attribute with a given name.
  3.  * <p>
  4.  * Note that IE, prior to version 8, will return false-positives for names
  5.  * that collide with element properties (e.g., style, width, and so forth).
  6.  * </p>
  7.  * 
  8.  * @param name
  9.  * the name of the attribute
  10.  * @return <code>true</code> if this element has the specified attribute
  11.  */
  12. public final boolean hasAttribute(String name) {
  13.   return ((Element) ot).hasAttribute(name);
  14. }

代码示例来源：origin: com.allen-sauer.gwt.voices/gwt-voices

  1. public boolean getLooping(Element element) {
  2.  return element.hasAttribute("loop");
  3. }

代码示例来源：origin: laaglu/lib-gwt-svg

  1. /**
  2.  * Determines whether an element has an attribute with a given name.
  3.  * <p>
  4.  * Note that IE, prior to version 8, will return false-positives for names
  5.  * that collide with element properties (e.g., style, width, and so forth).
  6.  * </p>
  7.  * 
  8.  * @param name
  9.  * the name of the attribute
  10.  * @return <code>true</code> if this element has the specified attribute
  11.  */
  12. public final boolean hasAttribute(String name) {
  13.   return ((Element) ot).hasAttribute(name);
  14. }

代码示例来源：origin: info.magnolia.ui/magnolia-ui-vaadin-common-widgets

  1. /**
  2.  * Returns whether the currently focused element is one that accepts keyboard input.
  3.  */
  4. protected boolean isFocusedElementAnInputField() {
  5.   final Element focused = WidgetUtil.getFocusedElement();
  6.   String tagName = focused.getTagName();
  7.   if ("input".equalsIgnoreCase(tagName) || "select".equalsIgnoreCase(tagName) || "textarea".equalsIgnoreCase(tagName)) {
  8.     return true;
  9.   }
  10.   Element el = focused;
  11.   boolean isContentEditable = false;
  12.   final String contenteditableAttrName = "contenteditable";
  13.   while (!isContentEditable && el != null) {
  14.     // the element would be inline-editable if there is a "contenteditable" attr present and its value is not explicitly "false" (no value is equivalent to "true")
  15.     isContentEditable = el.hasAttribute(contenteditableAttrName) && !el.getAttribute(contenteditableAttrName).equalsIgnoreCase("false");
  16.     el = el.getParentElement();
  17.   }
  18.   return isContentEditable;
  19. }

代码示例来源：origin: org.jboss.errai/errai-ui

  1. @Override
  2.  public boolean visit(final VisitContextMutable<TaggedElement> context, final Element element) {
  3.   for (final AttributeType attrType : AttributeType.values()) {
  4.    final String attrName = attrType.getAttributeName();
  5.    final TaggedElement existingCandidate = context.getResult();
  6.    if (element.hasAttribute(attrName) && element.getAttribute(attrName).equals(rootField)
  7.      && (existingCandidate == null || existingCandidate.getAttributeType().ordinal() < attrType.ordinal())) {
  8.     context.setResult(new TaggedElement(attrType, element));
  9.    }
  10.   }
  11.   return true;
  12.  }
  13. });

代码示例来源：origin: errai/errai

  1. @Override
  2.  public boolean visit(final VisitContextMutable<TaggedElement> context, final Element element) {
  3.   for (final AttributeType attrType : AttributeType.values()) {
  4.    final String attrName = attrType.getAttributeName();
  5.    final TaggedElement existingCandidate = context.getResult();
  6.    if (element.hasAttribute(attrName) && element.getAttribute(attrName).equals(rootField)
  7.      && (existingCandidate == null || existingCandidate.getAttributeType().ordinal() < attrType.ordinal())) {
  8.     context.setResult(new TaggedElement(attrType, element));
  9.    }
  10.   }
  11.   return true;
  12.  }
  13. });

代码示例来源：origin: GwtMaterialDesign/gwt-material

  1. public void testEnabled() {
  2.   // given
  3.   MaterialListValueBox<T> listValueBox = getWidget();
  4.   // when / then
  5.   final Element element = listValueBox.getListBox().getElement();
  6.   assertFalse(element.hasAttribute(CssName.DISABLED));
  7.   listValueBox.setEnabled(true);
  8.   assertFalse(element.hasAttribute(CssName.DISABLED));
  9.   assertTrue(listValueBox.isEnabled());
  10.   listValueBox.setEnabled(false);
  11.   assertTrue(element.hasAttribute(CssName.DISABLED));
  12.   assertFalse(listValueBox.getListBox().isEnabled());
  13. }

代码示例来源：origin: com.github.gwtmaterialdesign/gwt-material

  1. public void testEnabled() {
  2.   // given
  3.   MaterialListValueBox<T> listValueBox = getWidget();
  4.   // when / then
  5.   final Element element = listValueBox.getListBox().getElement();
  6.   assertFalse(element.hasAttribute(CssName.DISABLED));
  7.   listValueBox.setEnabled(true);
  8.   assertFalse(element.hasAttribute(CssName.DISABLED));
  9.   assertTrue(listValueBox.isEnabled());
  10.   listValueBox.setEnabled(false);
  11.   assertTrue(element.hasAttribute(CssName.DISABLED));
  12.   assertFalse(listValueBox.getListBox().isEnabled());
  13. }

代码示例来源：origin: GwtMaterialDesign/gwt-material

  1. protected <H extends UIObject & HasEnabled> void checkEnabled(HasEnabled widget, H target, boolean checkElement) {
  2.   final Element element = target.getElement();
  3.   if(checkElement) {
  4.     assertFalse(element.hasClassName(CssName.DISABLED));
  5.     assertFalse(element.hasAttribute(CssName.DISABLED));
  6.   }
  7.   widget.setEnabled(true);
  8.   if(checkElement) {
  9.     assertFalse(element.hasClassName(CssName.DISABLED));
  10.     assertFalse(element.hasAttribute(CssName.DISABLED));
  11.   }
  12.   assertEquals(widget.isEnabled(), true);
  13.   widget.setEnabled(false);
  14.   if(checkElement) {
  15.     assertTrue(element.hasClassName(CssName.DISABLED));
  16.     assertTrue(element.hasAttribute(CssName.DISABLED));
  17.   }
  18.   assertEquals(target.isEnabled(), false);
  19. }

代码示例来源：origin: com.github.gwtmaterialdesign/gwt-material

  1. protected <H extends UIObject & HasEnabled> void checkEnabled(HasEnabled widget, H target, boolean checkElement) {
  2.   final Element element = target.getElement();
  3.   if(checkElement) {
  4.     assertFalse(element.hasClassName(CssName.DISABLED));
  5.     assertFalse(element.hasAttribute(CssName.DISABLED));
  6.   }
  7.   widget.setEnabled(true);
  8.   if(checkElement) {
  9.     assertFalse(element.hasClassName(CssName.DISABLED));
  10.     assertFalse(element.hasAttribute(CssName.DISABLED));
  11.   }
  12.   assertEquals(widget.isEnabled(), true);
  13.   widget.setEnabled(false);
  14.   if(checkElement) {
  15.     assertTrue(element.hasClassName(CssName.DISABLED));
  16.     assertTrue(element.hasAttribute(CssName.DISABLED));
  17.   }
  18.   assertEquals(target.isEnabled(), false);
  19. }

代码示例来源：origin: GwtMaterialDesign/gwt-material

  1. public void testActivates() {
  2.   // UiBinder
  3.   // given
  4.   T widget = getWidget(false);
  5.   // when / then
  6.   widget.setActivates("test");
  7.   assertEquals("test", widget.getActivates());
  8.   // Standard
  9.   // given
  10.   attachWidget();
  11.   // when / then
  12.   final Element element = widget.getElement();
  13.   widget.setActivates("test");
  14.   assertTrue(element.hasAttribute("data-activates"));
  15.   assertEquals("test", element.getAttribute("data-activates"));
  16. }

代码示例来源：origin: SwellRT/swellrt

  1. public void testAttributesReflectedOnlyInContent() {
  2.  ContentDocument dom = TestEditors.createTestDocument();
  3.  c = dom.debugGetRawDocument();
  4.  ContentElement e = c.createElement("a", c.getDocumentElement(), null);
  5.  assertEquals(0, c.getAttributes(e).size());
  6.  c.setAttribute(e, "href", "blah");
  7.  c.setAttribute(e, "x", "y");
  8.  c.setAttribute(e, "aa", "bb");
  9.  assertEquals("bb", c.getAttribute(e, "aa"));
  10.  assertSame(null, c.getAttribute(e, "notthere"));
  11.  assertEquals(3, c.getAttributes(e).size());
  12.  for (String key : c.getAttributes(e).keySet()) {
  13.   assertTrue(!e.getImplNodelet().hasAttribute(key));
  14.  }
  15.  c.setAttribute(e, "x", "abc");
  16.  c.removeAttribute(e, "aa");
  17.  assertEquals("abc", c.getAttribute(e, "x"));
  18.  assertSame(null, c.getAttribute(e, "aa"));
  19.  assertEquals(2, c.getAttributes(e).size());
  20. }

代码示例来源：origin: com.github.gwtmaterialdesign/gwt-material

  1. public void testActivates() {
  2.   // UiBinder
  3.   // given
  4.   T widget = getWidget(false);
  5.   // when / then
  6.   widget.setActivates("test");
  7.   assertEquals("test", widget.getActivates());
  8.   // Standard
  9.   // given
  10.   attachWidget();
  11.   // when / then
  12.   final Element element = widget.getElement();
  13.   widget.setActivates("test");
  14.   assertTrue(element.hasAttribute("data-activates"));
  15.   assertEquals("test", element.getAttribute("data-activates"));
  16. }

代码示例来源：origin: com.github.gwtmaterialdesign/gwt-material

  1. public void testId() {
  2.   // UiBinder
  3.   // given
  4.   T widget = getWidget(false);
  5.   // when / then
  6.   widget.setId("test");
  7.   assertNotNull(widget.getId());
  8.   // Standard
  9.   // given
  10.   attachWidget();
  11.   // when / then
  12.   final Element element = widget.getElement();
  13.   widget.setId("test");
  14.   assertTrue(element.hasAttribute("id"));
  15.   assertEquals(widget.getId(), element.getId());
  16. }

代码示例来源：origin: GwtMaterialDesign/gwt-material

  1. @Override
  2. public void testId() {
  3.   // UiBinder
  4.   // given
  5.   T widget = getWidget(false);
  6.   // when / then
  7.   widget.setId(ACTIVATES);
  8.   assertNotNull(widget.getId());
  9.   // Standard
  10.   // given
  11.   attachWidget();
  12.   // when / then
  13.   final Element element = widget.getElement();
  14.   widget.setId(ACTIVATES);
  15.   assertTrue(element.hasAttribute("id"));
  16.   assertEquals(widget.getId(), element.getId());
  17. }

代码示例来源：origin: GwtMaterialDesign/gwt-material

  1. public void testId() {
  2.   // UiBinder
  3.   // given
  4.   T widget = getWidget(false);
  5.   // when / then
  6.   widget.setId("test");
  7.   assertNotNull(widget.getId());
  8.   // Standard
  9.   // given
  10.   attachWidget();
  11.   // when / then
  12.   final Element element = widget.getElement();
  13.   widget.setId("test");
  14.   assertTrue(element.hasAttribute("id"));
  15.   assertEquals(widget.getId(), element.getId());
  16. }

代码示例来源：origin: com.github.gwtmaterialdesign/gwt-material

  1. @Override
  2. public void testId() {
  3.   // UiBinder
  4.   // given
  5.   T widget = getWidget(false);
  6.   // when / then
  7.   widget.setId(ACTIVATES);
  8.   assertNotNull(widget.getId());
  9.   // Standard
  10.   // given
  11.   attachWidget();
  12.   // when / then
  13.   final Element element = widget.getElement();
  14.   widget.setId(ACTIVATES);
  15.   assertTrue(element.hasAttribute("id"));
  16.   assertEquals(widget.getId(), element.getId());
  17. }

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