Mise en œuvre d'Apache Wicket

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">

    <display-name>dahpubprogram</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>

    <filter>
        <filter-name>DahPubProgramApplication</filter-name>
        <filter-class>
            org.apache.wicket.protocol.http.WicketFilter
        </filter-class>
        <init-param>
            <param-name>applicationClassName</param-name>
            <param-value>org.himura.dahpubprogram.web.DahPubProgramApplication</param-value>
        </init-param>
        
        <!-- Uncomment to switch to production (deployment) mode
        <init-param>
            <param-name>configuration</param-name>
            <param-value>deployment</param-value>
        </init-param> -->
    </filter>

    <filter-mapping>
        <filter-name>DahPubProgramApplication</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

package org.himura.dahpubprogram.web;

public class DahPubProgramApplication extends WebApplication {

    public DahPubProgramApplication() {
        // Nothing
    }
    
    @Override
    public Class getHomePage() {
        return VisuProgramme.class;
    }
}

rootProgramFilesStorageDir=c:/Repertoire_racine_où_seront_stockés_les_fichiers_image_du_programme_de_chaque_mois

package org.himura.dahpubprogram.web.visuprogramme;

public class VisuProgramme extends WebPage {
    public VisuProgramme() throws Exception {
        String yearParam = getRequest().getParameter("year");
        String monthStartingAtOneParam = getRequest().getParameter("month");
        if (yearParam != null && !"".equals(yearParam) && monthStartingAtOneParam != null &&
                !"".equals(monthStartingAtOneParam)) {
            int yearParamAsInt = Integer.parseInt(yearParam);
            int monthStartingAtOneParamAsInt = Integer.parseInt(monthStartingAtOneParam);
            
            init(yearParamAsInt, monthStartingAtOneParamAsInt);
        }
        else {
            init(DateUtils.currentYear(), DateUtils.currentMonth());
        }
    }
    
    private void init(int year, int monthStartingAtOne) throws Exception {
        // Title
        Label title = new Label("title", getString("title") + " " + monthStartingAtOne + " / " + year);
        add(title);

        
        /**
         * Month program image initialization
         */
        File programImageFilesDir = new File(getString("rootProgramFilesStorageDir") + "/" + year);
        File programImageFile = FileUtils.uniqueFileStartingWith(programImageFilesDir,
            String.valueOf(monthStartingAtOne));
        
        Image programImage;
        if (programImageFile != null) {
            programImage = new Image("programImage", new FileResource(programImageFile));
        }
        else {
            // Affichage d'un message INFO en bas de la page (feedbackPanel)
            info(getString("noProgramForThisMonth"));
            
            // Dirty trick to access a resource outside current package
            URL noProgramImageURL = getClass().getClassLoader().getResource("images/transparentPixel.png");
            File noProgramImageFile = new File(noProgramImageURL.toURI());
            
            programImage = new Image("programImage", new FileResource(noProgramImageFile));
        }
        add(programImage);
        /**
         * END - Month program image initialization
         */

        
        // Construct feedback panel
        add(new FeedbackPanel("feedback"));
    }
}

<html>
    <head>
        <link rel="stylesheet" type="text/css" href="skins/basic/site.css" />
    </head>
    
    <body>
        <h1><span wicket:id="title" id="title"></span></h1>
        
        <img wicket:id="programImage" alt="programImage" />
        
        <div id="feedbackPanel">
            <span wicket:id="feedback"></span>
        </div>
    </body>
</html>

title=Program for month
noProgramForThisMonth=No program for this month

package org.himura.dahpubprogram.web.saisieprogramme;

public class SaisieProgramme extends WebPage {
    public SaisieProgramme() {
        // Construct the form
        SaisieProgrammeForm form = new SaisieProgrammeForm("form");
        add(form);
        form.init();
        
        // Construct feedback panel
        add(new FeedbackPanel("feedback"));        
    }
    
    
    /**
     * THE form
     *
     */
    public class SaisieProgrammeForm extends Form {
        private DropDownChoice monthsC;
        
        // Year text field initialization
        final FormComponent yearTextField = new RequiredTextField("year",
            new Model(String.valueOf(DateUtils.currentYear())), Integer.class).add(NumberValidator.minimum(2000));

        // File upload field initialization
        final FileUploadField fileUploadField = new FileUploadField("programImageFile");

        
        public SaisieProgrammeForm(String id) {
            super(id);
            
            add(yearTextField);
            add(fileUploadField.setRequired(true));
        }
        
        public void init() {
            /**
             * Months combo-box initialization
             */
            // TreeMap and not HashMap because we want to keep insertion order 
            final Map<Integer, String> mapMonthsKeyIDValueName = new TreeMap<Integer, String>();
            mapMonthsKeyIDValueName.put(new Integer(1), getPage().getString("jan"));
            mapMonthsKeyIDValueName.put(new Integer(2), getPage().getString("feb"));
            mapMonthsKeyIDValueName.put(new Integer(3), getPage().getString("mar"));
            mapMonthsKeyIDValueName.put(new Integer(4), getPage().getString("apr"));
            mapMonthsKeyIDValueName.put(new Integer(5), getPage().getString("may"));
            mapMonthsKeyIDValueName.put(new Integer(6), getPage().getString("jun"));
            mapMonthsKeyIDValueName.put(new Integer(7), getPage().getString("jul"));
            mapMonthsKeyIDValueName.put(new Integer(8), getPage().getString("aug"));
            mapMonthsKeyIDValueName.put(new Integer(9), getPage().getString("sep"));
            mapMonthsKeyIDValueName.put(new Integer(10), getPage().getString("oct"));
            mapMonthsKeyIDValueName.put(new Integer(11), getPage().getString("nov"));
            mapMonthsKeyIDValueName.put(new Integer(12), getPage().getString("dec"));
            
            List<Integer> listMonthIDs = new ArrayList<Integer>(mapMonthsKeyIDValueName.keySet());
            
            // Model set to next month
            monthsC = new DropDownChoice("months", new Model(new Integer(DateUtils.nextMonth())), listMonthIDs,
                    new IChoiceRenderer() {
                public Object getDisplayValue(Object month) {
                    return mapMonthsKeyIDValueName.get(month);
                }

                public String getIdValue(Object arg, @SuppressWarnings("unused")
                int arg1) {
                    return arg.toString();
                }
            });
            add(monthsC);
            /**
             * END - Months combo-box initialization
             */
        }
        
        @Override
        public void onSubmit() {
            try {
                int monthStartingAtOne = ((Integer) monthsC.getModelObject()).intValue();
                int year = Integer.parseInt(yearTextField.getValue());

                String fileName = fileUploadField.getFileUpload().getClientFileName();
                String ext = (fileName.lastIndexOf(".") == -1) ? "" : fileName.substring(fileName.lastIndexOf(".") +
                    1, fileName.length());

                // Should rather use a "org.himura.dahpubprogram.business.model.Program" object as arg
                ProgramFileService.uploadProgramFile(fileUploadField.getFileUpload().getInputStream(), ext,
                    getString("rootProgramFilesStorageDir"), monthStartingAtOne, year);

                VisuProgramme webPageVisuProgrammeWithParams = new VisuProgramme(year, monthStartingAtOne);
                setResponsePage(webPageVisuProgrammeWithParams);
            } catch (Exception e) {
                // HTML feedback message
                error(e.getMessage());
            }
        }
    }
}

add(new Button("resetButton") {
        public void onSubmit() {
                setResponsePage(MyPage.class);
        }
}.setDefaultFormProcessing(false));

<html>
    <head>
        <link rel="stylesheet" type="text/css" href="skins/basic/site.css" />
    </head>
    
    <body>
        <h1>
            <wicket:message key="title" />
        </h1>
        
        <form wicket:id="form">
            <div>
                <table>
                    <tr>
                        <td>
                            <wicket:message key="month" />
                        </td>
                        <td>
                            <select wicket:id="months" name="months"></select>
                            <input wicket:id="year" type="text" size="3" maxlength="4" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <wicket:message key="file" />
                        </td>
                        <td>
                            <input wicket:id="programImageFile" type="file" id="programImageFile" />
                        </td>
                    </tr>
                    
                    <tr>
                        <!-- Spacer -->
                        <td>&nbsp;</td>
                        
                        <td>
                            <input type="submit" value="Upload" />
                        </td>
                    </tr>
                </table>
            </div>
        </form>
        
        <div id="feedbackPanel">
            <span wicket:id="feedback"></span>
        </div>
    </body>
</html>

package org.himura.dahpubprogram.web.listeprogrammes;

import java.util.List;

public class ListeProgrammes extends WebPage {
    public ListeProgrammes() throws Exception {
        // Construct the form panel
        ListeProgrammesForm form = new ListeProgrammesForm("form");
        add(form);
        form.init();

        // Construct feedback panel
        add(new FeedbackPanel("feedback"));
    }
    
    
    /**
     * THE form
     *
     */
    public class ListeProgrammesForm extends Form {
        public ListeProgrammesForm(String id) {
            super(id);
        }
         
        public void init() throws Exception {
            List<Program> listPrograms = ListProgramsService.listPrograms(getPage().getString("rootProgramFilesStorageDir"));

            DataView dataViewPrograms = new DataView("dataViewPrograms", new ListDataProvider(listPrograms)) {
                @Override
                protected void populateItem(final Item item) {
                    try {
                        final Program program = (Program) item.getModelObject();
                        item.add(new Label("year", String.valueOf(program.getYear())));
                        item.add(new Label("monthStartingAtOne", String.valueOf(program.getMonthStartingAtOne())));
                        
                        /**
                         * View button
                         */
                        ImageButton imageButtonView = new ImageButton("viewButton", new Model("/images/magnifyingGlass.png")) {
                            @Override
                            public void onSubmit() {
                                try {
                                    VisuProgramme webPageVisuProgrammeWithParams = new VisuProgramme(program.getYear(),
                                        program.getMonthStartingAtOne());
                                    setResponsePage(webPageVisuProgrammeWithParams);
                                } catch (Exception e) {
                                    // HTML feedback message
                                    error(e.getMessage());
                                }
                            }
                        };
                        
                        item.add(imageButtonView);

                        
                        /**
                         * Delete button
                         */
                        ImageButton imageButtonDelete = new ImageButton("deleteButton", new Model("/images/cross.png")) {
                            @Override
                            public void onSubmit() {
                                ProgramFileService.deleteProgramFile(getPage().getString("rootProgramFilesStorageDir"),
                                    program.getMonthStartingAtOne(), program.getYear());
                                
                                // If omitted, the page is not refreshed
                                setResponsePage(ListeProgrammes.class);
                            }
                        };

                        item.add(imageButtonDelete);
        
                        
                        // Alternate row renderer
                        item.add(new AttributeModifier("class", true, new AbstractReadOnlyModel() {
                            @Override
                            public Object getObject() {
                                return (item.getIndex() % 2 == 1) ? "even" : "odd";
                            }
                        }));
                        
                    } catch (Exception e) {
                        // HTML feedback message
                        error(e.getMessage());
                    }
                }
            };
            
            // Add components to the form
            add(dataViewPrograms);
        }
    }
}

<html>
    <head>
        <link rel="stylesheet" type="text/css" href="skins/basic/site.css" />
    </head>
    
    <body>
        <h1><wicket:message key="title" /></h1>
        
        <form wicket:id="form">
            <table cellspacing="0" class="dataview">
                <tr>
                    <th><wicket:message key="year" /></th>
                    <th><wicket:message key="month" /></th>
                    <th>&nbsp;</th>
                    <th>&nbsp;</th>
                </tr>
                <tr wicket:id="dataViewPrograms">
                    <td><span wicket:id="year"></span></td>
                    <td><span wicket:id="monthStartingAtOne"></span> </td>
                    <td><input wicket:id="viewButton" type="image" /></td>
                    <td><input wicket:id="deleteButton" type="image" /></td>
                </tr>
            </table>
        </form>

        <div id="feedbackPanel">
            <span wicket:id="feedback"></span>
        </div>
    </body>
</html>

package org.himura.dahpubprogram.web.navigationpanel;

public class NavigationPanel extends Panel {
    public NavigationPanel(String id) {
        super(id);
        
        add(new BookmarkablePageLink("linkVisuProgramme", VisuProgramme.class));
        add(new BookmarkablePageLink("linkListeProgrammes", ListeProgrammes.class));
        add(new BookmarkablePageLink("linkSaisieProgramme", SaisieProgramme.class));
    }
}

<wicket:panel>
    <a wicket:id="linkVisuProgramme"><wicket:message key="viewMonthProgram" /></a>
    <br />
    <a wicket:id="linkListeProgrammes"><wicket:message key="allPrograms" /></a>
    <br />
    <a wicket:id="linkSaisieProgramme"><wicket:message key="addOrModifyProgram" /></a>
</wicket:panel>