org.efaps.ui.wicket.behaviors.PreviousValueBehavior.java Source code

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Here is the source code for org.efaps.ui.wicket.behaviors.PreviousValueBehavior.java

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/*
 * Copyright 2003 - 2015 The eFaps Team
 *
 * 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.efaps.ui.wicket.behaviors;

import org.apache.wicket.Component;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.efaps.ui.wicket.behaviors.dojo.AbstractDojoBehavior;
import org.efaps.ui.wicket.behaviors.dojo.OnDojoReadyHeaderItem;

/**
 * The Class PreviousValueBehavior.
 * Used to add the previous value from a dropdown to the parameters.
 * to be remove with the removal of .
 *
 * @author The eFaps Team
 */
public class PreviousValueBehavior extends AbstractDojoBehavior {
    /** */
    private static final long serialVersionUID = 1L;

    /** The check4select. */
    private boolean check4Select = false;

    /**
     * Checks if is check4select.
     *
     * @return the check4select
     */
    public boolean isCheck4Select() {
        return this.check4Select;
    }

    /**
     * Sets the check4 select.
     *
     * @param _check4Select the check4 select
     * @return the previous value behavior
     */
    public PreviousValueBehavior setCheck4Select(final boolean _check4Select) {
        this.check4Select = _check4Select;
        return this;
    }

    @Override
    public void renderHead(final Component _component, final IHeaderResponse _response) {
        if (_component.getDefaultModelObject() instanceof String
                && ((String) _component.getDefaultModelObject()).startsWith("<select")) {
            super.renderHead(_component, _response);
            _response.render(OnDojoReadyHeaderItem.forScript(getJavaScript(_component.getMarkupId(true))));
        }
    }

    /**
     * Gets the java script.
     *
     * @param _markupId the markup id
     * @return the java script
     */
    protected CharSequence getJavaScript(final String _markupId) {
        final StringBuilder ret = new StringBuilder()
                .append("require([\"dojo/on\", \"dojo/dom\", \"dojo/dom-construct\", \"dojo/dom-attr\"],")
                .append("function(on, dom, domConstruct, domAttr) {").append("if (\"SELECT\" == dom.byId('")
                .append(_markupId).append("').tagName) {").append("on(dom.byId('").append(_markupId)
                .append("'), \"focus\", function(){").append("if (!dojo.byId('").append(_markupId)
                .append("_previous')) {").append("domConstruct.place(\"<input name='\" + domAttr.get('")
                .append(_markupId).append("', 'name') + \"_eFapsPrevious' type='hidden' id='").append(_markupId)
                .append("_previous'>\", '").append(_markupId).append("'); ").append("}").append(" dojo.byId('")
                .append(_markupId).append("_previous').value = this.value;").append("});").append("}")
                .append("});");
        return ret.toString();
    }
}