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)