Examples of org.apache.wicket.model.PropertyModel

org.apache.wicket.model.PropertyModel
A PropertyModel is used to dynamically access a model using a "property expression". See {@link PropertyResolver} javadoc for allowed property expressions.
For example, take the following bean:
```
 public class Person { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } } 
```
We could construct a label that dynamically fetches the name property of the given person object like this:
```
 Person person = getSomePerson(); ... add(new Label("myLabel", new PropertyModel(person, "name")); 
```
Where 'myLabel' is the name of the component, and 'name' is the property expression to get the name property.

In the same fashion, we can create form components that work dynamically on the given model object. For instance, we could create a text field that updates the name property of a person like this:
```
 add(new TextField("myTextField", new PropertyModel(person, "name")); 
```
Note that the property resolver by default provides access to private members and methods. If guaranteeing encapsulation of the target objects is a big concern, you should consider using an alternative implementation.
@see PropertyResolver @see IModel @see Model @see LoadableDetachableModel @author Chris Turner @author Eelco Hillenius @author Jonathan Locke @param < T> The Model object type

            super(id, jetspeeeDoc);
            final SiteTreeNode node = getUserSelectedNode();
            Form exportForm = new Form("exportForm");
            Label exportLabel = new Label("exportName", "Export recursively");
            AjaxCheckBox exportChkBox = new AjaxCheckBox("recursively",
                    new PropertyModel(this, "recursively"))
            {


                @Override
                protected void onUpdate(AjaxRequestTarget target)
                {
                }
            };
            Label exporNameLabel = new Label("expLabel", "Export Object");
            TextField exportName = new TextField("expName", new PropertyModel(
                    this, "document.name"));
            exportLabel.setVisibilityAllowed(true);
            exportChkBox.setVisibilityAllowed(true);
            if (node.getDocType() != SiteTreeNode.FileType.Folder)
            {
                exportLabel.setVisible(false);
                exportChkBox.setVisible(false);
            }
            exportForm.add(exporNameLabel);
            exportForm.add(exportName);
            exportForm.add(exportLabel);
            exportForm.add(exportChkBox);
            exportObject = new ExportJetspeedObject();
            DynamicResourceLink exportButton = new DynamicResourceLink(
                    "exprtButton", new PropertyModel(this, "exportObject"))
            {


                @Override
                public void onClick()
                {
                    if (node.getDocType().equals(SiteTreeNode.FileType.Folder))
                    {
                        exportObject.setFileName(getDocument().getName()
                                + ".zip");
                    } else
                    {
                        exportObject.setFileName(getDocument().getName());
                    }
                    exportObject.setNode(getUserSelectedNode());
                    exportObject.setUserName(getPortletRequest()
                            .getUserPrincipal().getName());
                    exportObject.setRecursively(isRecursively());
                }
            };
            exportForm.add(exportButton);
            add(exportForm);
            // Adding Upload form Folder
            Form uploadForm = new Form("uploadForm");
            add(uploadForm);
            uploadForm.setVisibilityAllowed(true);
            uploadForm.setVisible(false);
            if (node.getDocType().equals(FileType.Folder))
            {
                uploadForm.setMultiPart(true);
                // Add one file input field
                uploadForm.add(new FileUploadField("fileInput",
                        new PropertyModel(this, "fileUploadField")));
                uploadForm.add(new CheckBox("copyIdsOnImport", new PropertyModel(this, "copyIdsOnImport")));
                uploadForm.add(new Button("uploadFile")
                {


                    /*
                     * (non-Javadoc)

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            final FeedbackPanel feedback = new FeedbackPanel("feedback");
            feedback.setOutputMarkupId(true);
            add(feedback);
            Form menuform = new Form("menuForm");
            TextField nameField = new RequiredTextField("nameField",
                    new PropertyModel(this, "menuDef.name"));
            menuform.add(new Label("nameLabel",new ResourceModel("common.name")));
            menuform.add(nameField);
            TextField optionsField = new TextField("optionsField",
                    new PropertyModel(this, "menuDef.options"));
            menuform.add(new Label("optionLabel",new ResourceModel("menu.option")));
            menuform.add(optionsField);
            TextField depthField = new TextField("depthField",
                    new PropertyModel(this, "menuDef.depth"));
            menuform.add(new Label("depthLabel",new ResourceModel("menu.depth")));
            menuform.add(depthField);
            CheckBox pathField = new CheckBox("pathField", new PropertyModel(
                    this, "menuDef.paths"));
            menuform.add(new Label("pathLabel",new ResourceModel("menu.path")));
            menuform.add(pathField);
            CheckBox regExpField = new CheckBox("regExpField",
                    new PropertyModel(this, "menuDef.regexp"));
            menuform.add(new Label("regExpLabel",new ResourceModel("menu.regExp")));
            menuform.add(regExpField);
            TextField profileField = new TextField("profileField",
                    new PropertyModel(this, "menuDef.profile"));
            menuform.add(new Label("profileLabel",new ResourceModel("menu.profile")));
            menuform.add(profileField);
            TextField titleField = new TextField("titleField",
                    new PropertyModel(this, "menuDef.title"));
            menuform.add(new Label("titleLabel",new ResourceModel("menu.title")));
            menuform.add(titleField);
            TextField skinField = new TextField("skinField", new PropertyModel(
                    this, "menuDef.skin"));
            menuform.add(new Label("skinLabel",new ResourceModel("menu.skin")));
            menuform.add(skinField);
            TextField orderField = new TextField("orderField",
                    new PropertyModel(this, "menuDef.order"));
            menuform.add(new Label("orderLabel",new ResourceModel("menu.order")));
            menuform.add(orderField);
            menuform.add(new AjaxButton("save",new ResourceModel("common.save"), menuform)
            {

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            super(id);
            final String includesName = includes.getName(); 
            this.includes = new IncludesDefinitionBean(includes);
            final MenuIncludeDefinition oldDef = includes;
            final Form menuform = new Form("menuForm");
            menuform.add(new TextField("nameField", new PropertyModel(this,
                    "includes.name")));
            menuform.add(new CheckBox("nestField", new PropertyModel(this,
                    "includes.nest")));
            menuform.add(new Label("namelabel",new ResourceModel("common.name")));
            menuform.add(new Label("nestlabel",new ResourceModel("menu.nest.label")));
            menuform.add(new AjaxButton("save",new ResourceModel("common.save"),menuform)
            {

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            super(id);
            final String excludeName = excludes.getName();
            this.excludes = new ExcludesDefinitionBean(excludes);
            final Form menuform = new Form("menuForm");
            menuform.add(new Label("namelabel",new ResourceModel("common.name")));
            menuform.add(new TextField("nameField", new PropertyModel(this,
                    "excludes.name")));
            menuform.add(new AjaxButton("save",new ResourceModel("common.save"),menuform)
            {


                @Override

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        {
            super(id);
            this.separator = new SeparatorDefinitionBean(separator);
            final String textName = separator.getText();
            Form separatorForm = new Form("separatorDataForm");
            separatorForm.add(new TextField("separatorText", new PropertyModel(
                    this, "separator.text")));
            separatorForm.add(new TextField("separatorTitle",
                    new PropertyModel(this, "separator.title")));
            separatorForm.add(new Label("nameLabel",new ResourceModel("common.name")));
            separatorForm.add(new Label("titleLabel",new ResourceModel("common.title")));
            separatorForm.add(new AjaxButton("save",new ResourceModel("common.save"), separatorForm)
            {

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                    "ajaxPanel");
            final FeedbackPanel feedbackPanel = new FeedbackPanel("feedback");
            ajaxPanel.setOutputMarkupId(true);
            Form menuform = new Form("menuForm");
            TextField nameField = new RequiredTextField("nameField",
                    new PropertyModel(this, "menuDef.name"));
            menuform.add(nameField);
            TextField optionsField = new TextField("optionsField",
                    new PropertyModel(this, "menuDef.options"));
            menuform.add(optionsField);
            TextField depthField = new TextField("depthField",
                    new PropertyModel(this, "menuDef.depth"));
            menuform.add(depthField);
            CheckBox pathField = new CheckBox("pathField", new PropertyModel(
                    this, "menuDef.paths"));
            menuform.add(pathField);
            CheckBox regExpField = new CheckBox("regExpField",
                    new PropertyModel(this, "menuDef.regexp"));
            menuform.add(regExpField);
            TextField profileField = new TextField("profileField",
                    new PropertyModel(this, "menuDef.profile"));
            menuform.add(profileField);
            TextField titleField = new TextField("titleField",
                    new PropertyModel(this, "menuDef.title"));
            menuform.add(titleField);
            TextField skinField = new TextField("skinField", new PropertyModel(
                    this, "menuDef.skin"));
            menuform.add(skinField);
            TextField orderField = new TextField("orderField",
                    new PropertyModel(this, "menuDef.order"));
            menuform.add(orderField);
            AjaxButton saveButton = new AjaxButton("save", menuform)
            {


                @Override

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            final WebMarkupContainer ajaxPanel = new WebMarkupContainer(
                    "basePanel");
            ajaxPanel.setOutputMarkupId(true);
            ajaxPanel.add(new Label("textLabel",new ResourceModel("menu.text")));
            ajaxPanel.add(new Label("titleLabel",new ResourceModel("menu.title")));
            ajaxPanel.add(new ListView("separator", new PropertyModel(this,
                    "menuOptions"))
            {


                public void populateItem(final ListItem listItem)
                {

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                    "basePanel");
            ajaxPanel.setOutputMarkupId(true);
            ajaxPanel.add(new Label("constraintLabel",new ResourceModel("security.constraint.title")));
            ajaxPanel.add(new Label("constraintTypeLabel",new ResourceModel("security.type.title")));
            
            ajaxPanel.add(new ListView("metaData", new PropertyModel(this,
                    "document.securityConstraints"))
            {


                public void populateItem(final ListItem listItem)
                {

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                    "metedataTab.name")));
            ajaxPanel.add(new Label("languageLabel", new ResourceModel(
                    "metedataTab.language")));


            final ListView metaDataListView = new ListView("metaData",
                    new PropertyModel(this, "document.metaData"))
            {


                private static final long serialVersionUID = 1L;


                public void populateItem(final ListItem listItem)

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            add(feedback);
            Form securityTabForm = new Form("securityDataForm");
            securityTabForm.add(new Label("securityConstraintLabel",
                    "Security Constraint"));
            DropDownChoice constraintsChoices = new DropDownChoice(
                    "constraints", new PropertyModel(this, "constraintName"),
                    getConstraintsDef());
            constraintsChoices.setRequired(true);
            securityTabForm.add(constraintsChoices);
            securityTabForm.add(new AjaxButton("save",new ResourceModel("common.save"), securityTabForm)
            {

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