Java ListSelectionModel.SINGLE_SELECTION屬性代碼示例

/** 
 * Check if selection of the nodes could break
 * the selection mode set in the ListSelectionModel.
 * @param nodes the nodes for selection
 * @return true if the selection mode is broken
 */
private boolean isSelectionModeBroken(Node[] nodes) {
    
    // if nodes are empty or single then everthing is ok
    // or if discontiguous selection then everthing ok
    if (nodes.length <= 1 || table.getSelectionModel().getSelectionMode() == 
            ListSelectionModel.MULTIPLE_INTERVAL_SELECTION) {
        return false;
    }

    // if many nodes
    
    // breaks single selection mode
    if (table.getSelectionModel().getSelectionMode() == 
        ListSelectionModel.SINGLE_SELECTION) {
        return true;
    }
    
    // check the contiguous selection mode

    // check selection's rows
    
    // all is ok
    return false;
}
 

/**
 * Show popup menu from actions provided by node at given index (if any).
 *
 * @param rowIndex
 * @param location
 */
void showPopupMenuAt(int rowIndex, Point location) {
    TreeListNode node = (TreeListNode) getModel().getElementAt(rowIndex);
    boolean popupForSelected = false;
    if (getSelectionMode() != ListSelectionModel.SINGLE_SELECTION) {
        popupForSelected = isPopupForSelected(node);
    }
    if (!popupForSelected) {
        setSelectedIndex(rowIndex);
    }
    Action[] actions = node.getPopupActions();

    if (null == actions || actions.length == 0) {
        return;
    }
    JPopupMenu popup = Utilities.actionsToPopup(actions, this);
    popup.show(this, location.x, location.y);
}
 

@Override
public Node storeToXML(Document doc) {
    Object value = getValue();
    int selectionMode = -1;
    Object[] values = getEnumerationValues();
    if (values[4].equals(value)) {
        selectionMode = ListSelectionModel.SINGLE_SELECTION;
    } else if (values[7].equals(value)) {
        selectionMode = ListSelectionModel.SINGLE_INTERVAL_SELECTION;
    } else if (values[10].equals(value)) {
        selectionMode = ListSelectionModel.MULTIPLE_INTERVAL_SELECTION;
    }
    org.w3c.dom.Element el = null;
    el = doc.createElement(XML_TABLE_SELECTION_MODEL);
    el.setAttribute(ATTR_SELECTION_MODE, Integer.toString(selectionMode));
    return el;
}
 

public void run() {
    boolean multisel = (list.getSelectionMode() != ListSelectionModel.SINGLE_SELECTION);
    int i = (multisel ? list.getLeadSelectionIndex() : list.getSelectedIndex());

    if (i < 0) {
        return;
    }

    Point p = list.indexToLocation(i);

    if (p == null) {
        return;
    }

    createPopup(p.x, p.y, false);
}
 

/** 
 * Check if selection of the nodes could break
 * the selection mode set in the ListSelectionModel.
 * @param nodes the nodes for selection
 * @return true if the selection mode is broken
 */
private boolean isSelectionModeBroken(Node[] nodes) {
    
    // if nodes are empty or single then everthing is ok
    // or if discontiguous selection then everthing ok
    if (nodes.length <= 1 || outline.getSelectionModel().getSelectionMode() == 
            ListSelectionModel.MULTIPLE_INTERVAL_SELECTION) {
        return false;
    }

    // if many nodes
    
    // breaks single selection mode
    if (outline.getSelectionModel().getSelectionMode() == 
        ListSelectionModel.SINGLE_SELECTION) {
        return true;
    }
    
    // check the contiguous selection mode

    // check selection's rows
    
    // all is ok
    return false;
}
 

public void setSelectionInterval(int index0, int index1) {
    clearSelection();
    if (selectionMode == ListSelectionModel.SINGLE_SELECTION) {
        modifySelectionInterval(index0, index1, true);
    } else {
        modifySelectionInterval(index1, index1, true);
    }
    fireValueChanged();
}
 

public void addSelectionInterval(int index0, int index1) {
    if (selectionMode == ListSelectionModel.SINGLE_SELECTION
            || selectionMode == ListSelectionModel.SINGLE_INTERVAL_SELECTION) {
        setSelectionInterval(index0, index1);
    } else {
        modifySelectionInterval(index0, index1, true);
    }
}
 

@Override
public void readFromXML(Node element) throws IOException {
    org.w3c.dom.NamedNodeMap attributes = element.getAttributes();
    Object[] values = getEnumerationValues();
    Object value;
    Node node = attributes.getNamedItem(ATTR_SELECTION_MODE);
    int selectionMode = Integer.valueOf(node.getNodeValue()).intValue();
    switch (selectionMode) {
        case ListSelectionModel.SINGLE_SELECTION: value = values[4]; break;
        case ListSelectionModel.SINGLE_INTERVAL_SELECTION: value = values[7]; break;
        case ListSelectionModel.MULTIPLE_INTERVAL_SELECTION: value = values[10]; break;
        default: value = values[1]; break;
    }
    setValue(value);
}
 

protected void saveSelection() {
    int sel = getSelectionModel().getSelectionMode();
    selection = sel == ListSelectionModel.SINGLE_SELECTION ?
            getSelectedValue(mainColumn) : getSelectedValues(mainColumn).toArray();
}
 

@Override
public void setSingleSelectionOnly(boolean b)
{
	int mode = b ? ListSelectionModel.SINGLE_SELECTION : ListSelectionModel.MULTIPLE_INTERVAL_SELECTION;
	results.getSelectionModel().setSelectionMode(mode);
}
 

public boolean isSingleSelect() {
    return getSelectionModel().getSelectionMode() == ListSelectionModel.SINGLE_SELECTION;
}