de.csenk.gwt.commons.editor.client.PathFlusher.java Source code

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Here is the source code for de.csenk.gwt.commons.editor.client.PathFlusher.java

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/*
 * Copyright 2012 Christian Senk
 * 
 * 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 de.csenk.gwt.commons.editor.client;

import com.google.gwt.editor.client.EditorContext;
import com.google.gwt.editor.client.EditorVisitor;
import com.google.gwt.editor.client.LeafValueEditor;
import com.google.gwt.editor.client.ValueAwareEditor;

/**
 * @author senk.christian@googlemail.com
 *
 */
public class PathFlusher extends EditorVisitor {

    private final String path;

    /**
     * @param path
     */
    public PathFlusher(String path) {
        this.path = path;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public <T> boolean visit(EditorContext<T> ctx) {
        if (!path.equals(ctx.getAbsolutePath()))
            return true; //TODO Optimize here by checking if it is necessary to descent further ...

        flush(ctx);
        return true;
    }

    /**
     * @see com.google.gwt.editor.client.impl.Flusher.endVisit(EditorContext<Q> ctx)
     * @param ctx
     */
    private <Q> void flush(EditorContext<Q> ctx) {
        // Flush ValueAware editors
        final ValueAwareEditor<Q> asValue = ctx.asValueAwareEditor();
        if (asValue != null) {
            asValue.flush();
        }

        // Pull value from LeafValueEditors and update edited object
        final LeafValueEditor<Q> asLeaf = ctx.asLeafValueEditor();
        if (asLeaf != null && ctx.canSetInModel()) {
            ctx.setInModel(asLeaf.getValue());
        }
    }

}