ComponentTreeItem
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class
ComponentTreeItem
: public HPS::Sprocket The ComponentTreeItem class is a smart pointer which corresponds to an item or node in a tree object in a GUI toolkit, e.g., a TreeViewItem in WPF or an HTREEITEM in MFC. This class must be derived from to facilitate tree creation in the various GUI toolkits. It is used to represent items in a component or model browser.
Public Functions
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virtual ComponentTreeItemPtr
AddChild
(Component const &in_component, ComponentTree::ItemType in_type) = 0 This function is used to create a new ComponentTreeItem to be the child of this ComponentTreeItem. This function will be invoked if this ComponentTreeItem has children and Expand has been invoked on it. This function should contain any necessary calls to GUI toolkits to create the appropriate GUI elements. Additionally, since this function requires the creation of a derived ComponentTreeItem, that derived ComponentTreeItem should use the base constructor which takes the same arguments this function.
Parameters: - in_component – The Component for this ComponentTreeItem. Should be passed to as the corresponding argument to the base constructor.
- in_type – The type for this ComponentTreeItem. Should be passed to as the corresponding argument to the base constructor.
Returns: A newly created object derived from ComponentTreeItem.
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virtual void
Assign
(ComponentTreeItem const &in_that) Share the underlying smart-pointer of the ComponentTreeItem source.
Parameters: in_that – The ComponentTreeItem source of the assignment. Returns: A reference to this ComponentTreeItem.
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virtual void
Collapse
() This function should be invoked when this ComponentTreeItem needs to collapse. If this function is overridden, the overriding function should invoke this base function. Additionally, this function will always release all children for this ComponentTreeItem when invoked.
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ComponentTreeItem
() The default constructor creates an uninitialized ComponentTreeItem object. The Type() function will return Type::None.
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ComponentTreeItem
(ComponentTreeItem &&in_that) The move constructor creates a ComponentTreeItem by transferring the underlying object of the rvalue reference to this ComponentTreeItem.
Parameters: in_that – An rvalue reference to a ComponentTreeItem to take the underlying object from.
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ComponentTreeItem
(ComponentTreeItem const &in_that) The copy constructor creates a ComponentTreeItem object that shares the underlying smart-pointer of the source ComponentTreeItem.
Parameters: in_that – The source ComponentTreeItem to copy.
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ComponentTreeItem
(ComponentTreePtr const &in_tree, CADModel const &in_cad_model) This constructor creates a ComponentTreeItem suitable for acting as a root in a ComponentTree. The CADModel provided to this constructor should be accessible from the Canvas and layer associated with the ComponentTree, otherwise an exception will be thrown.
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Parameters: - in_tree – The ComponentTree with which to associate this new root ComponentTreeItem.
- in_cad_model – The CADModel for this root ComponentTreeItem.
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ComponentTreeItem
(ComponentTreePtr const &in_tree, Component const &in_component, ComponentTree::ItemType in_type) This constructor creates a ComponentTreeItem which is not suitable for acting as a root in a ComponentTree, but is suitable to be a ComponentTreeItem under the root of the ComponentTree. This constructor should be the one invoked in the overridden AddChild function.
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Parameters: - in_tree – The ComponentTree with which to associate this new ComponentTreeItem.
- in_component – The Component for this ComponentTreeItem. This value should come from the corresponding argument to AddChild.
- in_type – The type of this ComponentTreeItem. This value should come from the corresponding argument to AddChild.
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bool
Equals
(ComponentTreeItem const &in_that) const Check if the source ComponentTreeItem points to the same underlying impl as this ComponentTreeItem.
Parameters: in_that – The source ComponentTreeItem to compare to this ComponentTreeItem. Returns: true if the objects reference the same impl, false otherwise.
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virtual void
Expand
() This function should be invoked when this ComponentTreeItem needs to expand. If this function is overridden, the overriding function should invoke this base function. Additionally, this function will always repopulate the children for this ComponentTreeItem when invoked.
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Component
GetComponent
() const Gets the Component for this ComponentTreeItem. The type of the Component depends on the ComponentTree::ItemType for this ComponentTreeItem.
Returns: The Component for this ComponentTreeItem.
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ComponentTree::ItemType
GetItemType
() const Gets the item type for this ComponentTreeItem. This is used to determine what type of data this ComponentTreeItem represents in the ComponentTree.
Returns: The item type for this ComponentTreeItem.
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ComponentPath
GetPath
() const Gets the ComponentPath corresponding to this ComponentTreeItem.
Returns: The ComponentPath corresponding to this ComponentTreeItem.
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UTF8
GetTitle
() const Gets the title for this ComponentTreeItem. This is the text that should be displayed for this ComponentTreeItem in the ComponentTree.
Returns: The title for this ComponentTreeItem.
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ComponentTreePtr
GetTree
() const Gets the ComponentTree associated with this ComponentTreeItem. This provides a means of accessing the derived ComponentTree by this ComponentTreeItem if necessary.
Returns: The ComponentTree associated with this ComponentTreeItem.
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bool
HasChildren
() const Indicates whether this ComponentTreeItem has any children.
Returns: Whether this ComponentTreeItem has any children.
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void
Hide
() This function will cause this ComponentTreeItem to be hidden if it isn’t already. This will cause this item to be marked as hidden if it isn’t already. Depending on the type of the ComponentTreeItem, sometimes a hide is nonsensical. In this case, no hide will be performed. If activated, this forces the visibility of the associated ComponentPath and all components under this path to invisible. Any visibility changes made previously at or below this path are flushed. When performing a highlight in combination with this function the highlight must be applied with Drawing::Overlay::InPlace to display properly. See this section for limitations and details on managing component visibility.
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Programming Guide: Managing Component Visibility
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void
Highlight
(HighlightOptionsKit const &in_highlight_options) This function will cause this ComponentTreeItem to be highlighted with the options specified. If the options requested is not part of the associated ComponentTree highlight options, it will be added to them. This will cause this item to be marked as highlighted if it isn’t already. Depending on the type of the ComponentTreeItem, sometimes a highlight is nonsensical. In this case, no highlight will be performed.
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Parameters: in_highlight_options – The highlight options used during highlighting
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void
Highlight
(size_t in_highlight_options_index = 0) This function will cause this ComponentTreeItem to be highlighted with the nth option specified in the associated ComponentTree. This will cause this item to be marked as highlighted if it isn’t already. Depending on the type of the ComponentTreeItem, sometimes a highlight is nonsensical. In this case, no highlight will be performed.
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Parameters: in_higlight_options_index – The index in the highlight options array held by the associated ComponentTree. Defaults to 0.
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bool
IsExpanded
() const Indicates whether this ComponentTreeItem is currently expanded.
Returns: Whether this ComponentTreeItem is currently expanded.
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bool
IsHidden
() const Indicates whether this ComponentTreeItem is currently hidden. This may mean that the Hide function on this ComponentTreeItem was invoked, or that the Component backing this ComponentTreeItem was hidden via ComponentPath::Hide or ComponentPath::Isolate.
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Programming Guide: Managing Component Visibility
Note
The state of this ComponentTreeItem may not yet mirror the state of the underlying ComponentPath as the notification is asynchronous. In order for this ComponentTreeItem to mirror the state of the underlying ComponentPath, a synchronous update needs to be performed on the associated view.
Returns: Whether this ComponentTreeItem is currently hidden.
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bool
IsHighlighted
() const Indicates whether this ComponentTreeItem is currently highlighted with the options specified in the associated ComponentTree. This may mean that the Highlight function on this ComponentTreeItem was invoked, or that the Component backing this ComponentTreeItem was highlighted by ComponentPath::Highlight.
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Note
The state of this ComponentTreeItem may not yet mirror the state of the underlying ComponentPath as the notification is asynchronous. In order for this ComponentTreeItem to mirror the state of the underlying ComponentPath, a synchronous update needs to be performed on the associated view.
Returns: Whether this ComponentTreeItem is currently highlighted with the options specified in the associated ComponentTree.
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void
Isolate
() This function will cause this ComponentTreeItem to be isolated, i.e., all other items will be hidden and this item will be shown. This will cause this item to be marked as visible if it isn’t already, and all other items to be marked as hidden. Depending on the type of the ComponentTreeItem, sometimes an isolate is nonsensical. In this case, no isolate will be performed. When performing a highlight in combination with this function the highlight must be applied with Drawing::Overlay::InPlace to display properly. See this section for limitations and details on managing component visibility.
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Programming Guide: Managing Component Visibility
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inline virtual HPS::Type
ObjectType
() const This function returns the type the object, as declared (if the object is derived, this does not give the true type of the derived object).
Returns: The declared type of the object in question, which may differ from the true, underlying type.
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virtual void
OnHide
() This function will be invoked when this ComponentTreeItem should be marked as hidden. This hiding may have come as a result of the Hide or Isolate function on a ComponentTreeItem being invoked, or due to ComponentPath::Hide being invoked on the Component backing this ComponentTreeItem. This function is meant to be overridden to allow one to change the appearance of a hidden ComponentTreeItem, e.g., by graying the text or changing an icon, to signify this new state. If this function is overridden, the overriding function should invoke this base function.
See also
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virtual void
OnHighlight
(HighlightOptionsKit const &in_options) This function will be invoked when this ComponentTreeItem should be marked as highlighted. This highlighting may have come as a result of the Highlight function on a ComponentTreeItem being invoked, or due to ComponentPath::Highlight being invoked on the Component backing this ComponentTreeItem. This function is meant to be overridden to allow one to change the appearance of a highlighted ComponentTreeItem, e.g., by bolding the text or changing an icon, to signify this new state. If this function is overridden, the overriding function should invoke this base function.
Parameters: in_options – The HighlightOptionsKit for the associated highlight.
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virtual void
OnShow
() This function will be invoked when this ComponentTreeItem should be marked as visible. This visibility may have come as a result of the Show or Isolate function on a ComponentTreeItem being invoked, or due to ComponentPath::Show or ComponentPath::Isolate being invoked on the Component backing this ComponentTreeItem. This function is meant to be overridden to allow one to change the appearance of a visible ComponentTreeItem, e.g., by no longer graying out the text or changing an icon, to signify this new state. If this function is overridden, the overriding function should invoke this base function.
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virtual void
OnUnhighlight
(HighlightOptionsKit const &in_options) This function will be invoked when this ComponentTreeItem should be marked as unhighlighted. This unhighlighting may have come as a result of the Unhighlight function on a ComponentTreeItem being invoked, or due to ComponentPath::Unhighlight being invoked on the Component backing this ComponentTreeItem. This function is meant to be overridden to allow one to change the appearance of a unhighlighted ComponentTreeItem, e.g., by no longer bolding the text or changing an icon, to signify this new state. If this function is overridden, the overriding function should invoke this base function.
Parameters: in_options – The HighlightOptionsKit for the associated unhighlight.
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bool
operator!=
(ComponentTreeItem const &in_that) const Check if the source ComponentTreeItem points to a different impl than this ComponentTreeItem.
Parameters: in_that – The source ComponentTreeItem to compare to this ComponentTreeItem. Returns: true if the objects reference different impls, false otherwise.
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ComponentTreeItem &
operator=
(ComponentTreeItem &&in_that) The move assignment operator transfers the underlying object of the rvalue reference to this ComponentTreeItem.
Parameters: in_that – An rvalue reference to a ComponentTreeItem to take the underlying object from. Returns: A reference to this ComponentTreeItem.
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ComponentTreeItem &
operator=
(ComponentTreeItem const &in_that) Share the underlying smart-pointer of the ComponentTreeItem source.
Parameters: in_that – The ComponentTreeItem source of the assignment. Returns: A reference to this ComponentTreeItem.
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bool
operator==
(ComponentTreeItem const &in_that) const Check if the source ComponentTreeItem points to the same underlying impl as this ComponentTreeItem.
Parameters: in_that – The source ComponentTreeItem to compare to this ComponentTreeItem. Returns: true if the objects reference the same impl, false otherwise.
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void
ReExpand
() Collapses this ComponentTreeItem and then re-expands the tree. It will try to preserve the original expansion state, however, if the underlying component structure has changed, the resulting expansion may look different.
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void
ResetVisibility
() This function will cause the visibility of this ComponentTreeItem to be reset to what is dictated by the associated CADModel & View. See this section for limitations and details on managing component visibility.
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Programming Guide: Managing Component Visibility
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void
Show
() This function will cause this ComponentTreeItem to be visible if it isn’t already. Depending on the type of the ComponentTreeItem, sometimes a show is nonsensical. In this case, no show will be performed. If activated, this makes the selected path visibile but preserves the model-defined visibility of any components that exist underneath the associated ComponentPath. Any visibility changes made subsequently at or below this path are honored unless they are redundant. When performing a highlight in combination with this function the highlight must be applied with Drawing::Overlay::InPlace to display properly. See this section for limitations and details on managing component visibility.
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Programming Guide: Managing Component Visibility
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void
Unhighlight
(HighlightOptionsKit const &in_highlight_options) This function will cause this ComponentTreeItem to be unhighlighted with the options specified. If the options requested is not part of the associated ComponentTree highlight options, it will be added to them. This will cause this item to be marked as unhighlighted if it isn’t already. Depending on the type of the ComponentTreeItem, sometimes a highlight is nonsensical. In this case, no unhighlight will be performed.
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Parameters: in_highlight_options – The highlight options used during unhighlighting
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void
Unhighlight
(size_t in_highlight_options_index = 0) This function will cause this ComponentTreeItem to be unhighlighted with the nth option specified in the associated ComponentTree. This will cause this item to be marked as unhighlighted if it isn’t already. Depending on the type of the ComponentTreeItem, sometimes an unhighlight is nonsensical. In this case, no unhighlight will be performed.
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Parameters: in_higlight_options_index – The index in the highlight options array held by the associated ComponentTree. Defaults to 0.
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virtual
~ComponentTreeItem
()
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virtual ComponentTreeItemPtr