net.cbtltd.client.field.CheckFields.java Source code

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Here is the source code for net.cbtltd.client.field.CheckFields.java

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/**
 * @author   bookingnet
 * @
 * @version   4.0.0
 */
package net.cbtltd.client.field;

import net.cbtltd.client.HasComponents;
import net.cbtltd.shared.License;

import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

/**
 * The Class CheckFields displays an array of check boxes whose value is returned as a string of 0 and 1 characters.
 * The value of a checked box is 1, and that of an unchecked box is zero.
 */
public class CheckFields extends AbstractField<String> {

    private Panel panel; // = new HorizontalPanel();
    private CheckBox[] field;

    /**
     * Instantiates a new array of check boxes.
     *
     * @param form is the form or other HasComponents element that contains the field.
     * @param permission that controls the visibility and accessibility of the field.
     * @param labels is the optional array of text labels to identify the check boxes.  
     * @param tab index of the field
     */
    public CheckFields(HasComponents form, short[] permission, String[] labels, boolean vertical, int tab) {
        initialize(panel = vertical ? new VerticalPanel() : new HorizontalPanel(), form, permission,
                CSS.cbtCheckField());

        field = new CheckBox[labels.length];
        for (int index = 0; index < labels.length; index++) {
            field[index] = new CheckBox(labels[index]);
            panel.add(field[index]);
        }
        field[0].setTabIndex(tab);
    }

    /**
     * Sets if the field is enabled.
     *
     * @param enabled is true if the field value can be changed.
     */
    @Override
    public void setEnabled(boolean enabled) {
        super.setEnabled(enabled);
        for (int index = 0; index < field.length; index++) {
            field[index].setEnabled(isEnabled());
        }
    }

    /* (non-Javadoc)
     * @see net.cbtltd.client.field.AbstractField#setFocus(boolean)
     */
    @Override
    public void setFocus(boolean focussed) {
        field[0].setFocus(focussed);
    }

    /* (non-Javadoc)
     * @see net.cbtltd.client.field.AbstractField#setTabIndex(int)
     */
    @Override
    public void setTabIndex(int tab) {
        field[0].setTabIndex(tab);
    }

    /* (non-Javadoc)
     * @see net.cbtltd.client.field.AbstractField#getValue()
     */
    public String getValue() {
        String value = "";
        for (int index = 0; index < field.length; index++) {
            value = value + (field[index].getValue() ? "1" : "0");
        }
        return value;
    }

    /* (non-Javadoc)
     * @see net.cbtltd.client.field.AbstractField#setValue(java.lang.Object)
     */
    public void setValue(String value) {
        if (value != null) {
            for (int index = 0; index < field.length; index++) {
                field[index].setValue(value.substring(index, index + 1).equals("1"));
            }
        }
        super.setChanged();
    }

    /* (non-Javadoc)
     * @see net.cbtltd.client.field.AbstractField#noValue()
     */
    public boolean noValue() {
        return (field == null || field.length == 0);
    }

    /* (non-Javadoc)
     * @see net.cbtltd.client.field.AbstractField#is(com.google.gwt.user.client.ui.Widget)
     */
    @Override
    public boolean is(Widget sender) {
        return (sender == this);
    }
}