org.eclipse.cdt.make.internal.ui.part.WizardCheckboxTablePart.java Source code

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Here is the source code for org.eclipse.cdt.make.internal.ui.part.WizardCheckboxTablePart.java

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/*******************************************************************************
 *  Copyright (c) 2000, 2009 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.cdt.make.internal.ui.part;

import com.ibm.icu.text.MessageFormat;

import org.eclipse.cdt.make.internal.ui.MakeUIPlugin;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;

/**
 * @version    1.0
 */
public class WizardCheckboxTablePart extends CheckboxTablePart {
    public static final String KEY_SELECT_ALL = MakeUIPlugin
            .getResourceString("WizardCheckboxTablePart.WizardCheckboxTablePart.selectAll"); //$NON-NLS-1$
    public static final String KEY_DESELECT_ALL = MakeUIPlugin
            .getResourceString("WizardCheckboxTablePart.WizardCheckboxTablePart.deselectAll"); //$NON-NLS-1$
    public static final String KEY_COUNTER = MakeUIPlugin
            .getResourceString("WizardCheckboxTablePart.WizardCheckboxTablePart.counter"); //$NON-NLS-1$

    private final String EMPTY_STRING = ""; //$NON-NLS-1$
    private int selectAllIndex = -1;
    private int deselectAllIndex = -1;
    private String tableName;
    private int counter;
    private Label counterLabel;

    /**
     * Constructor for WizardCheckboxTablePart.
     */
    public WizardCheckboxTablePart(String tableName, String[] buttonLabels) {
        super(buttonLabels);
        this.tableName = tableName;
    }

    public WizardCheckboxTablePart(String mainLabel) {
        this(mainLabel, new String[] { MakeUIPlugin.getResourceString(KEY_SELECT_ALL),
                MakeUIPlugin.getResourceString(KEY_DESELECT_ALL) });
        setSelectAllIndex(0);
        setDeselectAllIndex(1);
    }

    public void setSelectAllIndex(int index) {
        this.selectAllIndex = index;
    }

    public void setDeselectAllIndex(int index) {
        this.deselectAllIndex = index;
    }

    @Override
    protected void buttonSelected(Button button, int index) {
        if (index == selectAllIndex) {
            handleSelectAll(true);
        }
        if (index == deselectAllIndex) {
            handleSelectAll(false);
        }
    }

    public Object[] getSelection() {
        CheckboxTableViewer viewer = getTableViewer();
        return viewer.getCheckedElements();
    }

    public void setSelection(Object[] selected) {
        CheckboxTableViewer viewer = getTableViewer();
        viewer.setCheckedElements(selected);
        updateCounter(selected.length);
    }

    public void createControl(Composite parent) {
        createControl(parent, SWT.NULL, 2);
        counterLabel = new Label(parent, SWT.NULL);
        GridData gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
        gd.horizontalSpan = 2;
        counterLabel.setLayoutData(gd);
        updateCounter(0);
    }

    @Override
    protected Button createButton(Composite parent, String label, int index) {
        Button button = super.createButton(parent, label, index);
        return button;
    }

    @Override
    protected StructuredViewer createStructuredViewer(Composite parent, int style) {
        StructuredViewer viewer = super.createStructuredViewer(parent, style);
        return viewer;
    }

    @Override
    protected void createMainLabel(Composite parent, int span) {
        if (tableName == null)
            return;
        Label label = new Label(parent, SWT.NULL);
        label.setText(tableName);
        GridData gd = new GridData();
        gd.horizontalSpan = span;
        label.setLayoutData(gd);
    }

    protected void updateCounter(int amount) {
        counter = amount;
        updateCounterLabel();
    }

    protected void updateCounterLabel() {
        String number = EMPTY_STRING + getSelectionCount();
        String totalNumber = EMPTY_STRING + getTotalCount();
        String message = MessageFormat.format(MakeUIPlugin.getResourceString(KEY_COUNTER),
                new Object[] { number, totalNumber });
        counterLabel.setText(message);
    }

    public int getSelectionCount() {
        return counter;
    }

    public void selectAll(boolean select) {
        handleSelectAll(select);
    }

    private int getTotalCount() {
        CheckboxTableViewer viewer = getTableViewer();
        return viewer.getTable().getItemCount();
    }

    protected void handleSelectAll(boolean select) {
        CheckboxTableViewer viewer = getTableViewer();
        viewer.setAllChecked(select);
        int selected;
        if (!select) {
            selected = 0;
        } else {
            selected = getTotalCount();
        }
        updateCounter(selected);
    }

    @Override
    protected void elementChecked(Object element, boolean checked) {
        int count = getSelectionCount();
        updateCounter(checked ? count + 1 : count - 1);
    }
}