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/*
@ITMillApache2LicenseForJavaFiles@
*/
package com.vaadin.demo.reservation;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import com.vaadin.data.Container;
import com.vaadin.data.Item;
import com.vaadin.ui.Button;
import com.vaadin.ui.Layout;
import com.vaadin.ui.OrderedLayout;
import com.vaadin.ui.Panel;
import com.vaadin.ui.Button.ClickEvent;
public class ResourceSelectorPanel extends Panel implements
Button.ClickListener {
private final HashMap categoryLayouts = new HashMap();
private final HashMap categoryResources = new HashMap();
// private Container allResources;
private LinkedList selectedResources = null;
public ResourceSelectorPanel(String caption) {
super(caption, new OrderedLayout(OrderedLayout.ORIENTATION_HORIZONTAL));
addStyleName(Panel.STYLE_LIGHT);
setSizeUndefined();
setWidth("100%");
}
public void setResourceContainer(Container resources) {
removeAllComponents();
categoryLayouts.clear();
categoryResources.clear();
if (resources != null && resources.size() > 0) {
for (final Iterator it = resources.getItemIds().iterator(); it
.hasNext();) {
final Item resource = resources.getItem(it.next());
// final Integer id = (Integer) resource.getItemProperty(
// SampleDB.Resource.PROPERTY_ID_ID).getValue();
final String category = (String) resource.getItemProperty(
SampleDB.Resource.PROPERTY_ID_CATEGORY).getValue();
final String name = (String) resource.getItemProperty(
SampleDB.Resource.PROPERTY_ID_NAME).getValue();
final String description = (String) resource.getItemProperty(
SampleDB.Resource.PROPERTY_ID_DESCRIPTION).getValue();
final Button rButton = new Button(name, this);
rButton.setStyleName("link");
rButton.setDescription(description);
rButton.setData(resource);
Layout resourceLayout = (Layout) categoryLayouts.get(category);
LinkedList resourceList = (LinkedList) categoryResources
.get(category);
if (resourceLayout == null) {
resourceLayout = new OrderedLayout();
resourceLayout.setSizeUndefined();
resourceLayout.setMargin(true);
addComponent(resourceLayout);
categoryLayouts.put(category, resourceLayout);
resourceList = new LinkedList();
categoryResources.put(category, resourceList);
final Button cButton = new Button(category + " (any)", this);
cButton.setStyleName("important-link");
cButton.setData(category);
resourceLayout.addComponent(cButton);
}
resourceLayout.addComponent(rButton);
resourceList.add(resource);
}
}
}
// Selects one initial categore, inpractice randomly
public void selectFirstCategory() {
try {
final Object catId = categoryResources.keySet().iterator().next();
final LinkedList res = (LinkedList) categoryResources.get(catId);
final Layout l = (Layout) categoryLayouts.get(catId);
final Button catB = (Button) l.getComponentIterator().next();
setSelectedResources(res);
catB.setStyleName("selected-link");
} catch (final Exception e) {
e.printStackTrace(System.err);
}
}
private void setSelectedResources(LinkedList resources) {
selectedResources = resources;
fireEvent(new SelectedResourcesChangedEvent());
}
public LinkedList getSelectedResources() {
return selectedResources;
}
public void buttonClick(ClickEvent event) {
final Object source = event.getSource();
if (source instanceof Button) {
final Object data = ((Button) source).getData();
resetStyles();
if (data instanceof Item) {
final LinkedList rlist = new LinkedList();
rlist.add(data);
setSelectedResources(rlist);
} else {
final String category = (String) data;
final LinkedList resources = (LinkedList) categoryResources
.get(category);
setSelectedResources(resources);
}
((Button) source).setStyleName("selected-link");
}
}
private void resetStyles() {
for (final Iterator it = categoryLayouts.values().iterator(); it
.hasNext();) {
final Layout lo = (Layout) it.next();
for (final Iterator bit = lo.getComponentIterator(); bit.hasNext();) {
final Button b = (Button) bit.next();
if (b.getData() instanceof Item) {
b.setStyleName("link");
} else {
b.setStyleName("important-link");
}
}
}
}
public class SelectedResourcesChangedEvent extends Event {
public SelectedResourcesChangedEvent() {
super(ResourceSelectorPanel.this);
}
}
}
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