class TreeSingleSelectExample(HorizontalLayout, IValueChangeListener,
button.IClickListener, action.IHandler):
# Actions for the context menu
_ACTION_ADD = Action('Add child item')
_ACTION_DELETE = Action('Delete')
def __init__(self):
super(TreeSingleSelectExample, self).__init__()
self.setSpacing(True)
# Create the Tree,a dd to layout
self._tree = Tree('Hardware Inventory')
self.addComponent(self._tree)
# Contents from a (prefilled example) hierarchical container:
self._tree.setContainerDataSource(ExampleUtil.getHardwareContainer())
# Add Valuechangelistener and Actionhandler
self._tree.addListener(self, IValueChangeListener)
# Add actions (context menu)
self._tree.addActionHandler(self)
# Cause valueChange immediately when the user selects
self._tree.setImmediate(True)
# Set tree to show the 'name' property as caption for items
self._tree.setItemCaptionPropertyId(ExampleUtil.hw_PROPERTY_NAME)
self._tree.setItemCaptionMode(AbstractSelect.ITEM_CAPTION_MODE_PROPERTY)
# Expand whole tree
for idd in self._tree.rootItemIds():
self._tree.expandItemsRecursively(idd)
# Create the 'editor bar' (textfield and button in a horizontallayout)
self._editBar = HorizontalLayout()
self._editBar.setMargin(False, False, False, True)
self._editBar.setEnabled(False)
self.addComponent(self._editBar)
# textfield
self._editor = TextField('Item name')
self._editor.setImmediate(True)
self._editBar.addComponent(self._editor)
# apply-button
self._change = Button('Apply', self)#, 'buttonClick') FIXME: listener
self._editBar.addComponent(self._change)
self._editBar.setComponentAlignment(self._change, Alignment.BOTTOM_LEFT)
def valueChange(self, event):
if event.getProperty().getValue() is not None:
# If something is selected from the tree, get it's 'name' and
# insert it into the textfield
val = self._tree.getItem(
event.getProperty().getValue()).getItemProperty(
ExampleUtil.hw_PROPERTY_NAME)
self._editor.setValue(val)
self._editor.requestRepaint()
self._editBar.setEnabled(True)
else:
self._editor.setValue('')
self._editBar.setEnabled(False)
def buttonClick(self, event):
# If the edited value contains something, set it to be the item's new
# 'name' property
if not (self._editor.getValue() == ''):
item = self._tree.getItem(self._tree.getValue())
name = item.getItemProperty(ExampleUtil.hw_PROPERTY_NAME)
name.setValue(self._editor.getValue())
# Returns the set of available actions
def getActions(self, target, sender):
return [self._ACTION_ADD, self._ACTION_DELETE]
# Handle actions
def handleAction(self, a, sender, target):
if a == self._ACTION_ADD:
# Allow children for the target item, and expand it
self._tree.setChildrenAllowed(target, True)
self._tree.expandItem(target)
# Create new item, set parent, disallow children (= leaf node)
itemId = self._tree.addItem()
self._tree.setParent(itemId, target)
self._tree.setChildrenAllowed(itemId, False)
# Set the name for this item (we use it as item caption)
item = self._tree.getItem(itemId)
name = item.getItemProperty(ExampleUtil.hw_PROPERTY_NAME)
name.setValue('New Item')
elif a == self._ACTION_DELETE:
parent = self._tree.getParent(target)
self._tree.removeItem(target)
# If the deleted object's parent has no more children, set it's
# childrenallowed property to false (= leaf node)
if parent is not None and len(self._tree.getChildren(parent)) == 0:
self._tree.setChildrenAllowed(parent, False)
class TreeSingleSelectExample(HorizontalLayout, IValueChangeListener,
button.IClickListener, action.IHandler):
# Actions for the context menu
_ACTION_ADD = Action('Add child item')
_ACTION_DELETE = Action('Delete')
def __init__(self):
super(TreeSingleSelectExample, self).__init__()
self.setSpacing(True)
# Create the Tree,a dd to layout
self._tree = Tree('Hardware Inventory')
self.addComponent(self._tree)
# Contents from a (prefilled example) hierarchical container:
self._tree.setContainerDataSource(ExampleUtil.getHardwareContainer())
# Add Valuechangelistener and Actionhandler
self._tree.addListener(self, IValueChangeListener)
# Add actions (context menu)
self._tree.addActionHandler(self)
# Cause valueChange immediately when the user selects
self._tree.setImmediate(True)
# Set tree to show the 'name' property as caption for items
self._tree.setItemCaptionPropertyId(ExampleUtil.hw_PROPERTY_NAME)
self._tree.setItemCaptionMode(
AbstractSelect.ITEM_CAPTION_MODE_PROPERTY)
# Expand whole tree
for idd in self._tree.rootItemIds():
self._tree.expandItemsRecursively(idd)
# Create the 'editor bar' (textfield and button in a horizontallayout)
self._editBar = HorizontalLayout()
self._editBar.setMargin(False, False, False, True)
self._editBar.setEnabled(False)
self.addComponent(self._editBar)
# textfield
self._editor = TextField('Item name')
self._editor.setImmediate(True)
self._editBar.addComponent(self._editor)
# apply-button
self._change = Button('Apply', self) #, 'buttonClick') FIXME: listener
self._editBar.addComponent(self._change)
self._editBar.setComponentAlignment(self._change,
Alignment.BOTTOM_LEFT)
def valueChange(self, event):
if event.getProperty().getValue() is not None:
# If something is selected from the tree, get it's 'name' and
# insert it into the textfield
val = self._tree.getItem(
event.getProperty().getValue()).getItemProperty(
ExampleUtil.hw_PROPERTY_NAME)
self._editor.setValue(val)
self._editor.requestRepaint()
self._editBar.setEnabled(True)
else:
self._editor.setValue('')
self._editBar.setEnabled(False)
def buttonClick(self, event):
# If the edited value contains something, set it to be the item's new
# 'name' property
if not (self._editor.getValue() == ''):
item = self._tree.getItem(self._tree.getValue())
name = item.getItemProperty(ExampleUtil.hw_PROPERTY_NAME)
name.setValue(self._editor.getValue())
# Returns the set of available actions
def getActions(self, target, sender):
return [self._ACTION_ADD, self._ACTION_DELETE]
# Handle actions
def handleAction(self, a, sender, target):
if a == self._ACTION_ADD:
# Allow children for the target item, and expand it
self._tree.setChildrenAllowed(target, True)
self._tree.expandItem(target)
# Create new item, set parent, disallow children (= leaf node)
itemId = self._tree.addItem()
self._tree.setParent(itemId, target)
self._tree.setChildrenAllowed(itemId, False)
# Set the name for this item (we use it as item caption)
item = self._tree.getItem(itemId)
name = item.getItemProperty(ExampleUtil.hw_PROPERTY_NAME)
name.setValue('New Item')
elif a == self._ACTION_DELETE:
parent = self._tree.getParent(target)
self._tree.removeItem(target)
# If the deleted object's parent has no more children, set it's
# childrenallowed property to false (= leaf node)
if parent is not None and len(self._tree.getChildren(parent)) == 0:
self._tree.setChildrenAllowed(parent, False)
