net.dontdrinkandroot.extensions.wicket.component.jqueryui.JQueryUiAjaxSlider.java Source code

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Here is the source code for net.dontdrinkandroot.extensions.wicket.component.jqueryui.JQueryUiAjaxSlider.java

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/**
 * Copyright (C) 2012-2014 Philip W. Sorst <philip@sorst.net>
 * and individual contributors as indicated
 * by the @authors tag.
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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 net.dontdrinkandroot.extensions.wicket.component.jqueryui;

import net.dontdrinkandroot.wicket.component.GenericWebMarkupContainer;
import org.apache.wicket.ajax.AbstractDefaultAjaxBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.OnDomReadyHeaderItem;
import org.apache.wicket.markup.html.IHeaderContributor;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.util.string.StringValue;

public class JQueryUiAjaxSlider extends GenericWebMarkupContainer<Integer> implements IHeaderContributor {
    private final AbstractDefaultAjaxBehavior valueChangedBehaviour;

    private final int step;

    private final IModel<Integer> maxModel;

    private final IModel<Integer> minModel;

    public JQueryUiAjaxSlider(final String id, final IModel<Integer> model, final int min, final int max,
            final int step) {

        this(id, model, new Model<Integer>(min), new Model<Integer>(max), step);
    }

    public JQueryUiAjaxSlider(final String id, final IModel<Integer> model, IModel<Integer> minModel,
            final IModel<Integer> maxModel, final int step) {

        super(id, model);

        this.setOutputMarkupId(true);

        this.minModel = minModel;
        this.maxModel = maxModel;
        this.step = step;

        this.valueChangedBehaviour = new AbstractDefaultAjaxBehavior() {

            private static final long serialVersionUID = 1L;

            @Override
            protected void respond(final AjaxRequestTarget target) {

                final StringValue value = JQueryUiAjaxSlider.this.getRequest().getQueryParameters()
                        .getParameterValue("value");
                JQueryUiAjaxSlider.this.setModelObject(value.toInteger());
                JQueryUiAjaxSlider.this.onValueChanged(target);
            }
        };
        this.add(this.valueChangedBehaviour);
    }

    @Override
    public void renderHead(final IHeaderResponse response) {

        super.renderHead(response);

        response.render(OnDomReadyHeaderItem.forScript(String.format(
                "$('#%s').slider({value: %d, min: %d, max: %d, step: %d, change: function(event, ui) {wicketAjaxGet('%s&value=' + ui.value)}"
                        + "})",
                this.getMarkupId(), this.getModelObject(), this.minModel.getObject(), this.maxModel.getObject(),
                this.step, this.valueChangedBehaviour.getCallbackUrl())));
    }

    public void onValueChanged(final AjaxRequestTarget target) {

        target.appendJavaScript(String.format("$('#%s').slider({ 'option', 'max', %d})", this.getMarkupId(),
                this.maxModel.getObject()));
        target.appendJavaScript(String.format("$('#%s').slider({ 'option', 'min', %d})", this.getMarkupId(),
                this.minModel.getObject()));
        target.appendJavaScript(String.format("$('#%s').slider({ 'option', 'value', %d})", this.getMarkupId(),
                this.getModelObject()));
    }
}