本文整理了Java中com.google.gwt.user.client.ui.Tree.clear()方法的一些代码示例，展示了Tree.clear()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.clear()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：clear

Tree.clear介绍

[英]Clears all tree items from the current tree.
[中]清除当前树中的所有树项。

代码示例

代码示例来源：origin: oVirt/ovirt-engine

public void clearTree() {
  tree.clear();
}

代码示例来源：origin: io.github.nibiruos.ui/org.nibiru.ui.gwt

@Override
protected void setValue(@Nullable Iterable<Item> value) {
  items = value;
  control.clear();
  if (items != null) {
    for (Item item : items) {
      addItem(control, item);
    }
  }
}

代码示例来源：origin: org.optaplanner/optaplanner-wb-solver-editor-client

@Override
public void initTree(TreeItem rootTreeItem) {
  this.tree.clear();
  this.tree.addItem(rootTreeItem);
}

代码示例来源：origin: org.eagle-i/eagle-i-common-ui-suggest-gwt

public void setResource(final EIClass resource) {
  rootClass = resource;
  if ( tree != null ) {
    tree.clear();
    scroll.getElement().getStyle().clearHeight();
  }
  if ( rootClass.hasSubClass() ) {
    if ( tree != null ) {
      // tree.add(ApplicationImages.LOADING); // TODO: move this somewhere
      // accessible!
    }
    rootListLoading = true;
  } else {
    // Probably should assert...
    if ( tree != null ) {
      tree.addItem( "No types are available" );
    }
  }
}

代码示例来源：origin: org.eagle-i/eagle-i-common-ui-suggest-gwt

@Override
public void setResource(final EIClass resource) {
  rootClass = resource;
  if ( tree != null ) {
    tree.clear();
    scroll.getElement().getStyle().clearHeight();
  }
  if ( rootClass.hasSubClass() ) {
    if ( tree != null ) {
      tree.add( LOADING );
    }
    rootListLoading = true;
  } else {
    // Probably should assert...
    if ( tree != null ) {
      tree.addItem( "No types are available" );
    }
  }
}

代码示例来源：origin: oVirt/ovirt-engine

@SuppressWarnings("unchecked")
protected void updateItems() {
  List<M> items = (List<M>) model.getItems();
  tree.clear();
  if (items != null) {
    for (M rootModel : items) {
      addRootNode(createRootNode(rootModel), createLeafNode(getLeafModel(rootModel)));
    }
  }
}

代码示例来源：origin: de.esoco/gewt

/***************************************
 * Sets the data model of the tree. The data elements of the model will be
 * displayed as the top level items of the tree hierarchy. Model elements
 * that also implement the interface DataModel will be displayed as nodes of
 * the tree with their elements as sub-nodes. Elements that don't have
 * children or elements that don't implement DataModel will be shown as
 * leafs with no further children.
 *
 * @param rDataModel A data model that contains the root items of the tree
 */
public void setData(DataModel<?> rDataModel)
{
  com.google.gwt.user.client.ui.Tree rTree =
    (com.google.gwt.user.client.ui.Tree) getWidget();
  rTree.clear();
  for (int i = 0; i < rDataModel.getElementCount(); i++)
  {
    Object rElement = rDataModel.getElement(i);
    rTree.addItem(createTreeItem(rElement));
  }
}

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

public void setResource(final EIClass resource) {
  rootClass = resource;
  if ( tree != null ) {
    tree.clear();
    scroll.getElement().getStyle().clearHeight();
  }
  if ( rootClass.hasSubClass() ) {
    if ( tree != null ) {
      // tree.add(ApplicationImages.LOADING); // TODO: move this somewhere
      // accessible!
    }
    rootListLoading = true;
  } else {
    // Probably should assert...
    if ( tree != null ) {
      final SafeHtmlBuilder safeHtmlBuilder = new SafeHtmlBuilder();
      tree.addItem( safeHtmlBuilder.appendEscaped( "No types are available").toSafeHtml() );
    }
  }
}

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: org.eagle-i/eagle-i-datatools-sweet-gwt

@Override
public void setResource(final EIClass resource) {
  if ( resource != null ) {
    rootClass = resource;
    setTitle( "Taxonomy Browser for Class " + rootClass.getEntity().getLabel() );
    if ( tree != null ) {
      tree.clear();
      scroll.getElement().getStyle().clearHeight();
    }
    if ( rootClass.hasSubClass() ) {
      if ( tree != null ) {
        tree.add( LOADING );
      }
      rootListLoading = true;
    } else {
      // Probably should assert...
      if ( tree != null ) {
        final SafeHtmlBuilder safeHtmlBuilder = new SafeHtmlBuilder();
        tree.addItem( safeHtmlBuilder.appendEscaped( "No types are available").toSafeHtml() );
      }
    }
  } else {
    setTitle( UIMessages.NO_ONTOLOGY_TERMS );
    button.setVisible( false );
    this.setStyleName( "OntologyDropDownNoTerm" );
  }
}

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: oVirt/ovirt-engine

tree.clear();

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 );
        }
      }
    }
  }
}