本文整理了Java中com.google.gwt.user.client.ui.Tree.getItem()方法的一些代码示例，展示了Tree.getItem()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。Tree.getItem()方法的具体详情如下：
包路径：com.google.gwt.user.client.ui.Tree
类名称：Tree
方法名：getItem

Tree.getItem介绍

[英]Gets the top-level tree item at the specified index.
[中]获取指定索引处的顶级树项。

代码示例

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

/**
 * Removes all items from the root level of this tree.
 */
@Override
public void removeItems() {
 while (getItemCount() > 0) {
  removeItem(getItem(0));
 }
}

代码示例来源：origin: stackoverflow.com

Tree tree = (Tree) event.getSource();
if (tree.getItem(new Point(event.x, event.y)) != null)
  // an item was clicked.
else
  // no item was clicked.

代码示例来源：origin: net.wetheinter/gwt-user

/**
 * Removes all items from the root level of this tree.
 */
@Override
public void removeItems() {
 while (getItemCount() > 0) {
  removeItem(getItem(0));
 }
}

代码示例来源：origin: stackoverflow.com

Tree tree1 = ...;
Tree tree2 = ...;

int topIndex = tree1.indexOf(tree1.getTopItem());
tree2.setTopItem(tree2.getItem(topIndex));

代码示例来源：origin: com.vaadin.external.gwt/gwt-user

/**
 * Removes all items from the root level of this tree.
 */
@Override
public void removeItems() {
 while (getItemCount() > 0) {
  removeItem(getItem(0));
 }
}

代码示例来源：origin: stackoverflow.com

TreeItem item = tree2.getTopItem();
int i = tree2.indexOf(item);
 item = tree1.getItem(i);
tree1.setTopItem(item);

代码示例来源：origin: org.eagle-i/eagle-i-search-gwt

TreeItem findGroupItem( String groupName ) {
  for (int i = 0; i < groupTree.getItemCount(); i++) {
    TreeItem groupItem = groupTree.getItem( i );
    if (((GroupWidget) groupItem.getWidget()).name.equals( groupName )) {
      return groupItem;
    }
  }
  return null;
}

代码示例来源：origin: stackoverflow.com

TreeItem item = tree.getItem(pt);
int index = tree.indexOf(item);
System.out.println("Item Index-" + index);

代码示例来源：origin: oVirt/ovirt-engine

private void updateTreeState() {
  newSelectedItems.clear();
  for (int i = 0; i < tree.getItemCount(); i++) {
    updateItemSelection(tree.getItem(i));
  }
  selectedItems.clear();
  selectedItems.addAll(newSelectedItems);
  onItemsSelection();
}

代码示例来源：origin: kiegroup/drools-wb

public void setDSLSentences( final List<DSLSentence> dslSentences ) {
  if ( tree.getItem( 0 ) != null ) {
    tree.clear();
  }
  if ( dslSentences != null ) {
    for ( DSLSentence dslSentence : dslSentences ) {
      final TreeItem it = new TreeItem();
      it.setHTML( "<small>" + dslSentence.toString() + "</small>" );
      it.setUserObject( dslSentence );
      tree.addItem( it );
    }
  }
}

代码示例来源：origin: oVirt/ovirt-engine

private void saveTreeState() {
  oldItemStatesMap.clear();
  for (int i = 0; i < tree.getItemCount(); i++) {
    TreeItem rootItem = tree.getItem(i);
    oldRootItemsMap.put(rootItem.getUserObject(), rootItem);
    saveTreeItemState(rootItem);
  }
}

代码示例来源：origin: org.kie.guvnor/guvnor-categories-editor-client

public void addChildren( final CategoryItem parent,
             final String name,
             final String description ) {
  final CategoryItem child = parent.addChildren( name, description );
  final TreeItem parentTree;
  if ( getSelectedCategory() == null ) {
    parentTree = navTreeWidget.getItem( 0 );
  } else {
    parentTree = navTreeWidget.getSelectedItem();
  }
  final TreeItem ct = buildTreeItem( child );
  parentTree.addItem( ct );
  parentTree.setState( true );
}

代码示例来源：origin: oVirt/ovirt-engine

TreeItem findSelectedTreeItemRecursive(TreeItem item, int x, int y) {
    if (null == item) {
      int count = tree.getItemCount();
      for (int i = 0; i < count; i++) {
        TreeItem selected = findSelectedTreeItemRecursive(tree.getItem(i), x, y);
        if (selected != null) {
          return selected;
        }
      }
      return null;
    }

    int count = item.getChildCount();
    for (int i = 0; i < count; i++) {
      TreeItem selected = findSelectedTreeItemRecursive(item.getChild(i), x, y);
      if (selected != null) {
        return selected;
      }
    }

    if (x >= item.getAbsoluteLeft()
        && x <= item.getAbsoluteLeft() + item.getOffsetWidth()
        && y >= item.getAbsoluteTop()
        && y <= item.getAbsoluteTop() + item.getOffsetHeight()) {
      return item;
    }
    return null;
  }
}

代码示例来源：origin: kiegroup/drools-wb

public void setFullyQualifiedClassNames( final List<String> fullyQualifiedClassNames ) {
  if ( tree.getItem( 0 ) != null ) {
    tree.clear();
  }
  if ( fullyQualifiedClassNames != null ) {
    for ( String type : fullyQualifiedClassNames ) {
      final TreeItem it = new TreeItem();
      it.setHTML( AbstractImagePrototype.create( DRLTextEditorResources.INSTANCE.images().classImage() ).getHTML()
                + "<small style=\"cursor: pointer\">"
                + type + "</small>" );
      it.setUserObject( new ClassUserObject( type + "( )",
                          type ) );
      tree.addItem( it );
      it.addItem( Util.toSafeHtml( LAZY_LOAD ) );
    }
  }
}

代码示例来源：origin: org.kie.guvnor/guvnor-drl-text-editor-client

public void setDataModel( final DataModelOracle dataModel ) {
  if ( tree.getItem( 0 ) != null ) {
    tree.clear();
  }
  if ( dataModel.getFactTypes() != null ) {
    for ( String type : dataModel.getFactTypes() ) {
      TreeItem it = new TreeItem();
      it.setHTML( AbstractImagePrototype.create( ImageResources.INSTANCE.classImage() ).getHTML()
                + "<small>"
                + type + "</small>" );
      it.setUserObject( type + "( )" );
      tree.addItem( it );
      String[] fields = dataModel.getFieldCompletions( type );
      if ( fields != null ) {
        for ( String field : fields ) {
          TreeItem fi = new TreeItem();
          fi.setHTML( AbstractImagePrototype.create( ImageResources.INSTANCE.field() ).getHTML()
                    + "<small>"
                    + field + "</small>" );
          fi.setUserObject( field );
          it.addItem( fi );
        }
      }
    }
  }
}