org.eclipse.wst.jsdt.internal.ui.refactoring.PullPushCheckboxTableViewer.java Source code

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Here is the source code for org.eclipse.wst.jsdt.internal.ui.refactoring.PullPushCheckboxTableViewer.java

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/*******************************************************************************
 * Copyright (c) 2000, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.wst.jsdt.internal.ui.refactoring;

import org.eclipse.core.runtime.Assert;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Widget;
import org.eclipse.wst.jsdt.internal.corext.refactoring.structure.IMemberActionInfo;

class PullPushCheckboxTableViewer extends CheckboxTableViewer {
    public PullPushCheckboxTableViewer(Table table) {
        super(table);
    }

    /*
     * @see org.eclipse.jface.viewers.StructuredViewer#doUpdateItem(org.eclipse.swt.widgets.Widget, java.lang.Object, boolean)
     */
    protected void doUpdateItem(Widget widget, Object element, boolean fullMap) {
        super.doUpdateItem(widget, element, fullMap);
        if (!(widget instanceof TableItem))
            return;
        TableItem item = (TableItem) widget;
        IMemberActionInfo info = (IMemberActionInfo) element;
        item.setChecked(PullPushCheckboxTableViewer.getCheckState(info));
        Assert.isTrue(item.getChecked() == PullPushCheckboxTableViewer.getCheckState(info));
    }

    /*
     * @see org.eclipse.jface.viewers.Viewer#inputChanged(java.lang.Object, java.lang.Object)
     */
    protected void inputChanged(Object input, Object oldInput) {
        super.inputChanged(input, oldInput);
        // XXX workaround for http://bugs.eclipse.org/bugs/show_bug.cgi?id=9390
        setCheckState((IMemberActionInfo[]) input);
    }

    private void setCheckState(IMemberActionInfo[] infos) {
        if (infos == null)
            return;
        for (int i = 0; i < infos.length; i++) {
            IMemberActionInfo info = infos[i];
            setChecked(info, PullPushCheckboxTableViewer.getCheckState(info));
        }
    }

    private static boolean getCheckState(IMemberActionInfo info) {
        return info.isActive();
    }

    /*
     * @see org.eclipse.jface.viewers.Viewer#refresh()
     */
    public void refresh() {
        int topIndex = getTable().getTopIndex();
        super.refresh();
        // XXX workaround for http://bugs.eclipse.org/bugs/show_bug.cgi?id=9390
        setCheckState((IMemberActionInfo[]) getInput());
        if (topIndex < getTable().getItemCount())
            getTable().setTopIndex(topIndex); //see bug 31645
    }
}