org.wicketstuff.datatable_autocomplete.table.button.ButtonListView.java Source code

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Here is the source code for org.wicketstuff.datatable_autocomplete.table.button.ButtonListView.java

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/*
 * 
 * ==============================================================================
 * 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.wicketstuff.datatable_autocomplete.table.button;

import java.util.List;

import org.apache.wicket.AttributeModifier;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.markup.html.form.Radio;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.LoadableDetachableModel;
import org.wicketstuff.datatable_autocomplete.button.DTAAjaxFallbackButton;
import org.wicketstuff.datatable_autocomplete.form.action.AbstractFormOnSubmitAction;
import org.wicketstuff.datatable_autocomplete.form.action.IFormOnSubmitAction;
import org.wicketstuff.datatable_autocomplete.table.ISelectableTableViewPanelButtonProvider;

/**
 * @author mocleiri
 * 
 *         Expects the markup to look like: <code>
 * <span wicket:id="any tag you want">
 * <span wicket:id="button" />
 * </span>
 * </code>
 */
public class ButtonListView extends ListView<ISelectableTableViewPanelButtonProvider> {

    public static final String BUTTON_ID = "button";
    /**
     * 
     */
    private static final long serialVersionUID = 8897933872966515782L;
    private final Form<?> form;
    private final String displayEntityName;
    private final FormComponent<?> selectedContextField;

    /**
     * @param id
     * @param displayEntityName
     * @param list
     */
    public ButtonListView(String id, Form<?> form, String displayEntityName,
            FormComponent<?> selectedContextField) {

        super(id);
        this.form = form;
        this.displayEntityName = displayEntityName;
        this.selectedContextField = selectedContextField;
        setReuseItems(true);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.apache.wicket.markup.html.list.ListView#populateItem(org.apache
     * .wicket.markup.html.list.ListItem)
     */
    @Override
    protected void populateItem(ListItem<ISelectableTableViewPanelButtonProvider> item) {

        final ISelectableTableViewPanelButtonProvider buttonProvider = item.getModelObject();

        IFormOnSubmitAction buttonAction = buttonProvider.getButtonAction();

        if (buttonAction == null) {
            Label label;
            // not visible
            item.add(label = new Label(BUTTON_ID));

            label.setVisible(false);

            item.add(label);

            return;
        }

        // if the tow is required then
        buttonAction = new AbstractFormOnSubmitAction() {

            /**
                * 
                */
            private static final long serialVersionUID = 5910571859628875165L;

            public void onSubmit(AjaxRequestTarget target, Form<?> form) {

                if (buttonProvider.isSelectedRowRequired()) {

                    if (selectedContextField.getModelObject() == null) {
                        if (target != null) {
                            target.prependJavaScript("alert ('A selected row is required.');");
                        } else
                            error("A selected row is required.");

                        return;
                    }

                    // fall through
                }

                // run the user logic
                buttonProvider.getButtonAction().onSubmit(target, form);

                // else the action is defined.
                if (buttonProvider.isClearSelectedRowOnAction()) {
                    // clear the value in the form.
                    selectedContextField.clearInput();
                }

            }

        };

        DTAAjaxFallbackButton button;

        // if (buttonProvider.isSelectedRowRequired()) {
        //
        // IModel<String> requireASelectedRow;
        //
        // final List<Radio>radioList = new LinkedList<Radio>();
        //
        // if (selectedContextField instanceof RadioGroup) {
        // RadioGroup rg = (RadioGroup) selectedContextField;
        //
        // rg.visitChildren(new IVisitor() {
        //
        // /* (non-Javadoc)
        // * @see org.apache.wicket.Component.IVisitor#component(org.apache.wicket.Component)
        // */
        // public Object component(Component component) {
        //
        // if (component instanceof Radio) {
        //
        // radioList.add((Radio) component);
        // }
        //
        // return IVisitor.CONTINUE_TRAVERSAL_BUT_DONT_GO_DEEPER;
        // }
        //
        // });
        //
        //
        // requireASelectedRow = createRadioRequireSelectedRowModel (radioList);
        //
        // }
        // else {
        // // String hidden field
        //
        //
        // requireASelectedRow = new MarkupIDInStringModel(
        // "if (Wicket.$('" + MarkupIDInStringModel.MARKUP_ID_TAG
        // + "').value == '') {"
        // + "\nalert ('A selected row is required.');"
        // + "\nreturn false;" + "}", selectedContextField);
        // }
        //
        // button = new DTAAjaxFallbackButton(BUTTON_ID, buttonProvider
        // .getButtonLabelText(displayEntityName), this.form,
        // requireASelectedRow);
        //
        // button.setSubmitAction(buttonAction);
        // }
        // else {

        button = new DTAAjaxFallbackButton(BUTTON_ID, buttonProvider.getButtonLabelText(displayEntityName), form,
                buttonAction);
        // }

        String cssClass = buttonProvider.getCSSClassName();

        if (cssClass != null) {
            button.add(AttributeModifier.replace("class", cssClass));
        }

        item.add(button);

    }

    private IModel<String> createRadioRequireSelectedRowModel(final List<Radio<?>> radioList) {

        return new LoadableDetachableModel<String>() {

            /**
             * 
             */
            private static final long serialVersionUID = 8113932643386163719L;

            /*
             * (non-Javadoc)
             * 
             * @see org.apache.wicket.model.LoadableDetachableModel#load()
             */
            @Override
            protected String load() {

                StringBuffer template = new StringBuffer();

                template.append("if (");

                for (int i = 0; i < radioList.size(); i++) {

                    Radio<?> radio = radioList.get(i);

                    template.append("(Wicket.$('" + radio.getMarkupId(true) + "').checked == false)");

                    if (i > 0 && i < radioList.size() - 1) {
                        template.append(" and ");
                    }
                    radio.setOutputMarkupId(true);
                }

                template.append("{" + "\nalert ('A selected row is required.');" + "\nreturn false;" + "\n}");

                return template.toString();

            }

        };

    }
}