Example usage for com.google.gwt.user.client.ui ScrollPanel scrollToBottom

Introduction

In this page you can find the example usage for com.google.gwt.user.client.ui ScrollPanel scrollToBottom.

Prototype

public void scrollToBottom() 

Source Link

Document

Scroll to the bottom of this panel.

Usage

From source file:org.opencms.ade.galleries.client.ui.CmsResultsTab.java

License:Open Source License

/**
 * Scrolls to the result which corresponds to a preset value in the editor.<p>
 *///from  www.  jav  a  2s  .  co m
protected void scrollToPreset() {

    final ScrollPanel scrollPanel = getList();
    if (m_preset != null) {
        Widget child = scrollPanel.getWidget();
        if (child instanceof CmsList<?>) {
            @SuppressWarnings("unchecked")
            CmsList<I_CmsListItem> list = (CmsList<I_CmsListItem>) child;
            if (list.getWidgetCount() > 0) {
                final Widget first = (Widget) list.getItem(0);
                Timer timer = new Timer() {

                    @Override
                    public void run() {

                        int firstTop = first.getElement().getAbsoluteTop();
                        int presetTop = m_preset.getElement().getAbsoluteTop();
                        final int offset = presetTop - firstTop;
                        if (offset >= 0) {
                            scrollPanel.setVerticalScrollPosition(offset);
                        } else {
                            // something is seriously wrong with the positioning if this case occurs   
                            scrollPanel.scrollToBottom();
                        }
                    }
                };
                timer.schedule(10);
            }
        }
    }
}

---