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Icon from GWT tree menu item to the right.

开发者 https://www.devze.com 2023-03-28 00:06 出处:网络
Is it possible to align the icon for a tree menu开发者_JS百科 item to the right instead of left?

Is it possible to align the icon for a tree menu开发者_JS百科 item to the right instead of left? Like this :

item1 >
item2 >
item3 >

Where the ">" is an image. I am using standard GWT. Tried with both CellTree and normal Tree.

/Andreas


Edit: Just realised this is a Google Web Toolkit question. I know nothing about Google Web Toolkit - but if they let you use normal CSS you can style any list in the way I describe below:

You can't do it with the standard list-style property, but you can definitely do it with background-image:

li {
    list-style: none;
    background-image: url('arrow.gif');
    background-position: right center;
}


You can put any Widgets as treeItem into the Tree. So if you want to put an item inside the tree which has the icon left just create a horizonal panel, put your text and the icon inside and then put the horizontal panel into the tree... (I know this sounds a little bit complex but it is actually really simple and you can do alot of other cool stuf with it)

    Tree t = new Tree();
    HorizontalPanel hc = new HorizontalPanel();
    hc.add(new Label("some text"));
    hc.add(new Image("http://tueffel.net/images/icons/icon13.gif"));
    TreeItem ti = new TreeItem(hc);

    HorizontalPanel hc2 = new HorizontalPanel();
    hc2.add(new Label("some text"));
    hc2.add(new Image("http://tueffel.net/images/icons/icon13.gif"));
    ti.addItem(new TreeItem(hc2));
    t.addItem(ti);
    RootPanel.get().add(t);


I have a CellTree with my own TreeModel which return a NodeInfo with custom renderer.

something like this:

viewModel  = new MyTreeModel( dirs.getRootItems(), filter );
treeDrives = new CellTree( viewModel, null, treeResources );

public class MyTreeModel {
    @Override
    public <T> NodeInfo<?> getNodeInfo( final T value ) {
        return new DefaultNodeInfo<Item>( new ListDataProvider<Item>( dirs ), new DirectoryCell(), selectionModel, null );
    }
}

private final class DirectoryCell extends AbstractCell<Item> {
    @Override
    public void render( com.google.gwt.cell.client.Cell.Context context, Item value, SafeHtmlBuilder sb ) {
    // my own html renderer ... 
    sb.appendHtmlConstant(value.toString);
    sb.append"<img src=\"" + value.getImgUrl() + "\" //>");
}


new TreeItem(new HTML("Item Text <img src='path/to/image.png'>"));
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