Example usage for org.eclipse.jface.viewers CheckboxTreeViewer getGrayedElements

Introduction

In this page you can find the example usage for org.eclipse.jface.viewers CheckboxTreeViewer getGrayedElements.

Prototype

public Object[] getGrayedElements() 

Source Link

Document

Returns a list of grayed elements in this viewer's tree, including currently hidden ones that are marked as grayed but are under a collapsed ancestor.

Usage

From source file:net.refractions.udig.project.ui.internal.LegendViewCheckboxUtils.java

License:Open Source License

/**
 * Returns what the status of the folder's checkbox should be with respect to its child layers.
 * /*  w w  w .j  a va2s.  c  om*/
 * @param viewer
 * @param folder
 * @return CHECKED - the folder should be checked, BLOCKED - folder should be blocked, UNCHECKED
 *         - folder should be unchecked
 */
private static FolderState getFolderCheckboxDisplay(CheckboxTreeViewer viewer, Folder folder) {

    final List<ILegendItem> items = folder.getItems();
    if (items.size() == 0) {

        final boolean isGrayed = viewer.getGrayed(folder);
        if (isGrayed) {
            return FolderState.BLOCKED;
        }
        final boolean isChecked = viewer.getChecked(folder);
        if (isChecked) {
            return FolderState.CHECKED;
        }

    } else {

        int checkedCnt = 0;
        int grayedCnt = 0;
        final List<Object> grayedElements = Arrays.asList(viewer.getGrayedElements());
        final List<Object> checkedElements = Arrays.asList(viewer.getCheckedElements());

        for (ILegendItem item : items) {
            if (grayedElements.contains(item)) {
                grayedCnt++;
            } else if (checkedElements.contains(item)) {
                checkedCnt++;
            }
        }
        if (checkedCnt > 0) {
            if (checkedCnt == items.size()) {
                return FolderState.CHECKED;
            } else {
                return FolderState.BLOCKED;
            }
        }
        if (grayedCnt > 0) {
            return FolderState.BLOCKED;
        }

    }

    return FolderState.UNCHECKED;

}

---

From source file:org.kalypso.contribs.eclipse.jface.wizard.TreeSelectionPage.java

License:Open Source License

protected void updateState(final CheckboxTreeViewer viewer) {
    m_checkedElements = viewer.getCheckedElements();
    m_grayedElements = viewer.getGrayedElements();

    setPageComplete(m_checkedElements != null && m_checkedElements.length > 0);
}

---