org.opendatakit.common.web.client.UIEnabledValidatingCheckboxColumn.java Source code

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Here is the source code for org.opendatakit.common.web.client.UIEnabledValidatingCheckboxColumn.java

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/*
 * Copyright (C) 2011 University of Washington
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.opendatakit.common.web.client;

import java.util.Comparator;

import com.google.gwt.cell.client.Cell.Context;
import com.google.gwt.cell.client.FieldUpdater;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.user.cellview.client.Column;

public abstract class UIEnabledValidatingCheckboxColumn<T> extends Column<T, Boolean>
        implements FieldUpdater<T, Boolean> {

    final UIEnabledPredicate<T> isEnabledPredicate;
    final Comparator<T> comparator;

    protected UIEnabledValidatingCheckboxColumn(BooleanValidationPredicate<T> validationPredicate,
            UIVisiblePredicate<T> isVisiblePredicate, UIEnabledPredicate<T> isEnabledPredicate,
            Comparator<T> comparator) {
        super(new UIEnabledValidatingCheckboxCell<T>(validationPredicate, isVisiblePredicate, isEnabledPredicate));
        this.setFieldUpdater(this);
        this.isEnabledPredicate = isEnabledPredicate;
        this.comparator = comparator;
        this.setSortable(comparator != null);
    }

    @Override
    public void onBrowserEvent(Context context, Element elem, T object, NativeEvent event) {
        if (isEnabledPredicate == null || isEnabledPredicate.isEnabled(object)) {
            super.onBrowserEvent(context, elem, object, event);
        }
    }

    public Comparator<T> getComparator() {
        return comparator;
    }

    public abstract void setValue(T object, Boolean value);

    @Override
    public void update(int index, T object, Boolean value) {
        setValue(object, value);
    }
}