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Changing a template source in the CustomLayout on the fly
Hi all,
What I'm trying to do is to change component positions added in the CustomLayout. So, I have two tamplates with two HTML tables with different cell structure(Vertical and Horizontal position). On the Checkbox click the CustomLayout should change a template f.e. from Horizontal to Vertical position. Is it possible to change template in the CustomLayout in the way ? The snipped code below is example of one of my attempt:
public class MyCustomLayout extends CustomLayout {
private boolean verticalPosition = false;
public MyCustomLayout() {
super();
setVerticalPosition(false);
}
protected static String HORIZONTALL_TEMPLATE_HTML =
"<table width=\"500px\">" +
" <tr>" +
" <td align=\"left\" width=\"250px\" style=\"white-space: normal;\">" +
" <div location=\"cap_field\">" +
" </div>" +
" </td>" +
" <td align=\"left\" width=\"5px\" style=\"color:red\">" +
" <div location=\"req_field\">" +
" </div>" +
" </td>" +
" <td valign=\"middle\" align=\"left\">" +
" <div location=\"inp_field\"></div>" +
" </td>" +
" </tr>" +
"</table>";
protected static String VERTICAL_TEMPLATE = "topinputlayout";
protected static String VERTICAL_TEMPLATE_HTML =
"<table width=\"100px\">" +
"<tr>" +
"<td align=\"left\" width=\"50px\">"+
"<div >" +
"<div style=\"float:left\" location=\"cap_field\"></div>"+
"<div style=\"float:left\" location=\"req_field\" style=\"color:red\"></div>"+
"<div style=\"clear:both\"></div>"+
"</div>"+
"</td>"+
"</tr>"+
"<tr>"+
"<td align=\"left\">"+
"<div location=\"inp_field\"></div>"+
"</td>"+
"</tr>"+
"</table>";
protected ByteArrayInputStream getTemplateSource(String templateXHTML){
return new ByteArrayInputStream(templateXHTML.getBytes());
}
public void setVerticalPosition(boolean verticalPosition) {
setTemplateName(verticalPosition);
}
public void setTemplateName(boolean verticalPosition){
try {
initTemplateContentsFromInputStream(verticalPosition ? getTemplateSource(VERTICAL_TEMPLATE_HTML) : getTemplateSource(HORIZONTALL_TEMPLATE_HTML));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
And this is a init method in TestApplication
public void init() {
final Window mainWindow = new Window("Test Application");
setMainWindow(mainWindow);
mainWindow.setTheme("test");
Label caption = new Label("Caption");
TextField question = new TextField("Question");
final MyCustomLayout myCustomLayout = new MyCustomLayout();
myCustomLayout.addComponent(caption, "cap_field");
myCustomLayout.addComponent(question, "inp_field");
mainWindow.addComponent(myCustomLayout);
CheckBox cb = new CheckBox("Set Vertical");
cb.addListener(new Property.ValueChangeListener() {
public void valueChange(ValueChangeEvent event) {
boolean value = (Boolean) event.getProperty().getValue();
myCustomLayout.setVerticalPosition(value);
myCustomLayout.requestRepaint();
mainWindow.showNotification("Check: " + value);
}
});
cb.setImmediate(true);
mainWindow.addComponent(cb);
}
I'm using a Vaadin 6.6.7
Tnx in advance.
MB
Mladen Babic: What I'm trying to do is to change component positions added in the CustomLayout. So, I have two tamplates with two HTML tables with different cell structure(Vertical and Horizontal position).
This question keeps coming up (the javadoc definitely needs to be improved), so: the current client side implementation does not support changing the template on the fly.
See ticket #5774, which also has an attached forked version of CustomLayout that does support template changes - just check that it is up to date with more recent Vaadin versions.