ICommand (yFiles-for-JavaFX-Complete-3.0 API)

```
public interface ICommand
```
Base interface for a command that can be executed.
Implementations of this interface are provided by the library. Use createCommand(String) to conveniently create your own implementation of this interface that can then be used with KeyboardInputMode.addCommandBinding(ICommand, KeyboardInputMode.ExecuteCommandHandler, KeyboardInputMode.CanExecuteCommandHandler) addCommandBinding}.

See Also:

createCommand(String)

Field Summary

Fields
Modifier and Type	Field and Description
`static ICommand`	`ADD_LABEL` A `ICommand` that can be `executed` from within the `GraphControl` to `add another label` to the `ILabelOwner` that is specified by the `Parameter`.
`static ICommand`	`ADJUST_GROUP_NODE_SIZE` A `ICommand` that can be `executed` from within the `GraphControl` to `adjust the size of the selected group nodes`.
`static ICommand`	`BEGIN_EDGE_CREATION` This is an `ICommand` that `CreateEdgeInputMode` instances can execute if they have been `installed` in a `CanvasControl`.
`static ICommand`	`CLOSE` A `ICommand` to close a document.
`static ICommand`	`COLLAPSE_GROUP` A `ICommand` that can be `executed` from within the `GraphControl` to `collapse` group nodes.
`static ICommand`	`COPY` A `ICommand` to copy to the clipboard.
`static ICommand`	`CUT` A `ICommand` to cut an item and place it in the clipboard.
`static ICommand`	`DECREASE_ZOOM` A `ICommand` to decrease the zoom level.
`static ICommand`	`DELETE` A `ICommand` to delete an item.
`static ICommand`	`DESELECT_ALL` A `ICommand` that can be `executed` from within the `GraphControl` to `clear the selection`.
`static ICommand`	`DESELECT_ITEM` A `ICommand` that can be `executed` from within the `GraphControl` to deselect the item that is specified by the `Parameter`.
`static ICommand`	`DUPLICATE` A `ICommand` that can be `executed` from within the `GraphControl` to `duplicate items` of the current `IGraph`.
`static ICommand`	`EDIT_LABEL` A `ICommand` that can be `executed` from within the `GraphControl` to `edit the label` that is specified by the `Parameter`.
`static ICommand`	`ENTER_GROUP` A `ICommand` that can be `executed` from within the `GraphControl` to `switch the local root` of the current `IFoldingView` view to the given group node.
`static ICommand`	`EXIT_GROUP` A `ICommand` that can be `executed` from within the `GraphControl` to `exit the current local root` of the current `IFoldingView` view to the given parent view.
`static ICommand`	`EXPAND_GROUP` A `ICommand` that can be `executed` from within the `GraphControl` to `expand` group nodes.
`static ICommand`	`EXTEND_SELECTION_DOWN` A `ICommand` to extend the selection downwards.
`static ICommand`	`EXTEND_SELECTION_LEFT` A `ICommand` to extend the selection to the left.
`static ICommand`	`EXTEND_SELECTION_RIGHT` A `ICommand` to extend the selection to the right.
`static ICommand`	`EXTEND_SELECTION_UP` A `ICommand` to extend the selection upwards.
`static ICommand`	`FIT_CONTENT` A `ICommand` that invokes `fitContent` if executed.
`static ICommand`	`FIT_GRAPH_BOUNDS` The `ICommand` that performs the `GraphControl.fitGraphBounds(com.yworks.yfiles.geometry.InsetsD)` action.
`static ICommand`	`GROUP_SELECTION` A `ICommand` that can be `executed` from within the `GraphControl` to `group the currently selected items`.
`static ICommand`	`HELP` A `ICommand` to open help.
`static ICommand`	`INCREASE_ZOOM` A `ICommand` to increase the zoom level.
`static ICommand`	`MOVE_DOWN` A `ICommand` to move the selection down.
`static ICommand`	`MOVE_FOCUS_BACK` A `ICommand` to move the focus backwards.
`static ICommand`	`MOVE_FOCUS_DOWN` A `ICommand` to move the focus downwards.
`static ICommand`	`MOVE_FOCUS_FORWARD` A `ICommand` to move the focus forwards.
`static ICommand`	`MOVE_FOCUS_PAGE_DOWN` A `ICommand` to move the focus up a page.
`static ICommand`	`MOVE_FOCUS_PAGE_UP` A `ICommand` to move the focus up a page.
`static ICommand`	`MOVE_FOCUS_UP` A `ICommand` to move the focus upwards.
`static ICommand`	`MOVE_LEFT` A `ICommand` to move the selection left.
`static ICommand`	`MOVE_RIGHT` A `ICommand` to move the selection right.
`static ICommand`	`MOVE_TO_PAGE_DOWN` A `ICommand` to move the selection down a page.
`static ICommand`	`MOVE_TO_PAGE_UP` A `ICommand` to move the selection up a page.
`static ICommand`	`MOVE_UP` A `ICommand` to move the selection up.
`static ICommand`	`NEW` A `ICommand` to create a new document.
`static ICommand`	`OPEN` A `ICommand` to open a document.
`static ICommand`	`PASTE` A `ICommand` to paste from the clipboard.
`static ICommand`	`PRINT` A `ICommand` to print.
`static ICommand`	`PRINT_PREVIEW` A `ICommand` that indicates the intention to print and show a preview of what to print beforehand.
`static ICommand`	`PROPERTIES` A `ICommand` to show properties of an item.
`static ICommand`	`REDO` A `ICommand` to redo a previously undone operation.
`static ICommand`	`REVERSE_EDGE` A `ICommand` that reverses the direction of edges.
`static ICommand`	`SAVE` A `ICommand` to save an item.
`static ICommand`	`SAVE_AS` A `ICommand` to save an item under a new name.
`static ICommand`	`SCROLL_PAGE_DOWN` A `ICommand` to scroll down.
`static ICommand`	`SCROLL_PAGE_LEFT` A `ICommand` to scroll left.
`static ICommand`	`SCROLL_PAGE_RIGHT` A `ICommand` to scroll right.
`static ICommand`	`SCROLL_PAGE_UP` A `ICommand` to scroll up.
`static ICommand`	`SELECT_ALL` A `ICommand` to select all items.
`static ICommand`	`SELECT_ITEM` A `ICommand` that can be `executed` from within the `GraphControl` to select the item that is specified by the `Parameter`.
`static ICommand`	`SELECT_TO_PAGE_DOWN` A `ICommand` to extend the selection a page downwards.
`static ICommand`	`SELECT_TO_PAGE_UP` A `ICommand` to extend the selection a page upwards.
`static ICommand`	`SET_CURRENT_ITEM` A `ICommand` that invokes `CurrentItem` if executed.
`static ICommand`	`TOGGLE_EXPANSION_STATE` A `ICommand` that can be `executed` from within the `GraphControl` to `toggle` the collapsed/expanded state of currently selected group nodes.
`static ICommand`	`TOGGLE_ITEM_SELECTION` A `ICommand` that can be `executed` from within the `GraphControl` to toggle the selection state of the item that is specified by the `Parameter`.
`static ICommand`	`UNDO` A `ICommand` to undo the previous operation.
`static ICommand`	`UNGROUP_SELECTION` A `ICommand` that can be `executed` from within the `GraphControl` to `ungroup the currently selected items`.
`static ICommand`	`UPDATE_CONTENT_RECT` A `ICommand` that invokes `updateContentRect` if executed.
`static ICommand`	`ZOOM` A `ICommand` to set the zoom level.
`static ICommand`	`ZOOM_TO_CURRENT_ITEM` A `ICommand` that changes the `Zoom` and the `ViewPoint` in an animated fashion such that the `CurrentItem` becomes fully visible.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`void`	`addCanExecuteChangedListener(IEventHandler canExecuteChangedEvent)` Adds the given listener for the `CanExecuteChanged` event that occurs when the result of a call to `canExecute(Object, Object)` may yield a different result.
`default boolean`	`canExecute()` Determines whether this command be executed with respect to the given parameter and target.
`default boolean`	`canExecute(Object parameter)` Determines whether this command be executed with respect to the given parameter and target.
`boolean`	`canExecute(Object parameter, Object target)` Determines whether this command be executed with respect to the given parameter and target.
`static ICommand`	`createCommand()` Creates a new `ICommand` instance that does nothing.
`static ICommand`	`createCommand(String name)` Creates a new `ICommand` instance that does nothing.
`default void`	`execute()` Executes this command with respect to the given parameter and target.
`default void`	`execute(Object parameter)` Executes this command with respect to the given parameter and target.
`void`	`execute(Object parameter, Object target)` Executes this command with respect to the given parameter and target.
`String`	`getName()` Gets an optional identifier for this command.
`static void`	`invalidateRequerySuggested()` Suggests a requery of the `executability` of all routed commands that are known to the system to adjust the UI to properly reflect the state.
`static void`	`processInput(Object sender, boolean keyDown, IEventArgs eventArgs)`
`void`	`removeCanExecuteChangedListener(IEventHandler canExecuteChangedEvent)` Removes the given listener for the `CanExecuteChanged` event that occurs when the result of a call to `canExecute(Object, Object)` may yield a different result.

- Field Detail
  - ADD_LABEL
```
static final ICommand ADD_LABEL
```
    A ICommand that can be executed from within the GraphControl to add another label to the ILabelOwner that is specified by the Parameter.
    If no Parameter is set, this will trigger the GraphEditorInputMode.onAddLabel() if GraphEditorInputMode is used.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - ADJUST_GROUP_NODE_SIZE
```
static final ICommand ADJUST_GROUP_NODE_SIZE
```
    A ICommand that can be executed from within the GraphControl to adjust the size of the selected group nodes.
    The default keyboard binding for this command is ctrl-shift-G.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - BEGIN_EDGE_CREATION
```
static final ICommand BEGIN_EDGE_CREATION
```
    This is an ICommand that CreateEdgeInputMode instances can execute if they have been installed in a CanvasControl.
    If this command gets executed, the Parameter is inspected to see if it is set to either an IPortCandidate, an IPort, or an INode that is an element in the currently edited graph instance. If so, method CreateEdgeInputMode.doStartEdgeCreation(com.yworks.yfiles.view.input.IPortCandidate) will be invoked and the user can finish the edge creation gesture.
  - CLOSE
```
static final ICommand CLOSE
```
    A ICommand to close a document.
    This command is not necessarily handled by yFiles. Application writers can handle the command in a manner that makes sense in the context of the application, e.g. closing the current window.
    
    There is no default shortcut for this command.
  - COLLAPSE_GROUP
```
static final ICommand COLLAPSE_GROUP
```
    A ICommand that can be executed from within the GraphControl to collapse group nodes.
    If the parameter to this command is null, the currently selected group nodes are collapsed. If the parameter is an INode instance, that group node will be collapsed. If the parameter is an Iterable instance, then all group nodes in that enumeration are collapsed.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - COPY
```
static final ICommand COPY
```
    A ICommand to copy to the clipboard.
    GraphViewerInputMode and GraphEditorInputMode handle this command in conjunction with GraphClipboard.
    
    The default shortcuts for this command are Ctrl+C and Ctrl+Ins on Windows and Linux and Command+C and Command+Ins on Mac OS.
    
    See Also:
    
    CUT, PASTE
  - CUT
```
static final ICommand CUT
```
    A ICommand to cut an item and place it in the clipboard.
    GraphEditorInputMode handles this command in conjunction with GraphClipboard.
    
    The default shortcuts for this command are Ctrl+X and Shift+Del on Windows and Linux and Command+X and Shift+Del on Mac OS.
    
    See Also:
    
    COPY, PASTE
  - DECREASE_ZOOM
```
static final ICommand DECREASE_ZOOM
```
    A ICommand to decrease the zoom level.
    CanvasControl handles this command to decrease the zoom level by 20 %. A different factor from the default 1.2 may be given as the command parameter.
    
    There is no default shortcut for this command.
    
    See Also:
    
    INCREASE_ZOOM, ZOOM
  - DELETE
```
static final ICommand DELETE
```
    A ICommand to delete an item.
    GraphEditorInputMode handles this command to delete the currently selected items.
    
    The default shortcut for this command is Del.
  - DESELECT_ALL
```
static final ICommand DESELECT_ALL
```
    A ICommand that can be executed from within the GraphControl to clear the selection.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - DESELECT_ITEM
```
static final ICommand DESELECT_ITEM
```
    A ICommand that can be executed from within the GraphControl to deselect the item that is specified by the Parameter.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - DUPLICATE
```
static final ICommand DUPLICATE
```
    A ICommand that can be executed from within the GraphControl to duplicate items of the current IGraph.
  - EDIT_LABEL
```
static final ICommand EDIT_LABEL
```
    A ICommand that can be executed from within the GraphControl to edit the label that is specified by the Parameter.
    If no Parameter is set, this will trigger the GraphEditorInputMode.onEditLabel() if GraphEditorInputMode is used.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - ENTER_GROUP
```
static final ICommand ENTER_GROUP
```
    A ICommand that can be executed from within the GraphControl to switch the local root of the current IFoldingView view to the given group node.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - EXIT_GROUP
```
static final ICommand EXIT_GROUP
```
    A ICommand that can be executed from within the GraphControl to exit the current local root of the current IFoldingView view to the given parent view.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - EXPAND_GROUP
```
static final ICommand EXPAND_GROUP
```
    A ICommand that can be executed from within the GraphControl to expand group nodes.
    If the parameter to this command is null, the currently selected group nodes are expanded. If the parameter is an INode instance, that node will be expanded. If the parameter is an Iterable instance, then all group nodes in that enumeration are expanded.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - EXTEND_SELECTION_DOWN
```
static final ICommand EXTEND_SELECTION_DOWN
```
    A ICommand to extend the selection downwards.
    NavigationInputMode handles this command to extend the selection with the next item below.
    
    The default shortcut for this command is Shift+↓.
    
    See Also:
    
    EXTEND_SELECTION_UP, EXTEND_SELECTION_LEFT, EXTEND_SELECTION_RIGHT, SELECT_TO_PAGE_UP, SELECT_TO_PAGE_DOWN
  - EXTEND_SELECTION_LEFT
```
static final ICommand EXTEND_SELECTION_LEFT
```
    A ICommand to extend the selection to the left.
    NavigationInputMode handles this command to extend the selection with the next item to the left.
    
    The default shortcut for this command is Shift+←.
    
    See Also:
    
    EXTEND_SELECTION_UP, EXTEND_SELECTION_DOWN, EXTEND_SELECTION_RIGHT, SELECT_TO_PAGE_UP, SELECT_TO_PAGE_DOWN
  - EXTEND_SELECTION_RIGHT
```
static final ICommand EXTEND_SELECTION_RIGHT
```
    A ICommand to extend the selection to the right.
    NavigationInputMode handles this command to extend the selection with the next item to the right.
    
    The default shortcut for this command is Shift+→.
    
    See Also:
    
    EXTEND_SELECTION_UP, EXTEND_SELECTION_DOWN, EXTEND_SELECTION_LEFT, SELECT_TO_PAGE_UP, SELECT_TO_PAGE_DOWN
  - EXTEND_SELECTION_UP
```
static final ICommand EXTEND_SELECTION_UP
```
    A ICommand to extend the selection upwards.
    NavigationInputMode handles this command to extend the selection with the next item above.
    
    The default shortcut for this command is Shift+↑.
    
    See Also:
    
    EXTEND_SELECTION_DOWN, EXTEND_SELECTION_LEFT, EXTEND_SELECTION_RIGHT, SELECT_TO_PAGE_UP, SELECT_TO_PAGE_DOWN
  - FIT_CONTENT
```
static final ICommand FIT_CONTENT
```
    A ICommand that invokes fitContent if executed.
  - FIT_GRAPH_BOUNDS
```
static final ICommand FIT_GRAPH_BOUNDS
```
    The ICommand that performs the GraphControl.fitGraphBounds(com.yworks.yfiles.geometry.InsetsD) action.
    The parameter can be either an InsetsD or convertible that will be used to create an appropriately sized insets object from.
  - GROUP_SELECTION
```
static final ICommand GROUP_SELECTION
```
    A ICommand that can be executed from within the GraphControl to group the currently selected items.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - HELP
```
static final ICommand HELP
```
    A ICommand to open help.
    This command is not necessarily handled by yFiles. Application writers can handle the command in a manner that makes sense in the context of the application, e.g. showing the online help.
    
    The default shortcut for this command is F1.
  - INCREASE_ZOOM
```
static final ICommand INCREASE_ZOOM
```
    A ICommand to increase the zoom level.
    CanvasControl handles this command to increase the zoom level by 20 %. A different factor from the default 1.2 may be given as the command parameter.
    
    There is no default shortcut for this command.
    
    See Also:
    
    DECREASE_ZOOM, ZOOM
  - MOVE_DOWN
```
static final ICommand MOVE_DOWN
```
    A ICommand to move the selection down.
    NavigationInputMode handles this command to select the next item below.
    
    The default shortcut for this command is ↓.
    
    See Also:
    
    MOVE_UP, MOVE_LEFT, MOVE_RIGHT, MOVE_TO_PAGE_UP, MOVE_TO_PAGE_DOWN
  - MOVE_FOCUS_BACK
```
static final ICommand MOVE_FOCUS_BACK
```
    A ICommand to move the focus backwards.
    NavigationInputMode handles this command to focus the next item to the left.
    
    The default shortcut for this command is Ctrl+← on Windows and Linux and Command+← on Mac OS.
    
    See Also:
    
    MOVE_FOCUS_FORWARD, MOVE_FOCUS_UP, MOVE_FOCUS_DOWN, MOVE_FOCUS_PAGE_UP, MOVE_FOCUS_PAGE_DOWN
  - MOVE_FOCUS_DOWN
```
static final ICommand MOVE_FOCUS_DOWN
```
    A ICommand to move the focus downwards.
    NavigationInputMode handles this command to focus the next item below.
    
    The default shortcut for this command is Ctrl+↓ on Windows and Linux and Command+↓ on Mac OS.
    
    See Also:
    
    MOVE_FOCUS_BACK, MOVE_FOCUS_FORWARD, MOVE_FOCUS_UP, MOVE_FOCUS_PAGE_UP, MOVE_FOCUS_PAGE_DOWN
  - MOVE_FOCUS_FORWARD
```
static final ICommand MOVE_FOCUS_FORWARD
```
    A ICommand to move the focus forwards.
    NavigationInputMode handles this command to focus the next item to the right.
    
    The default shortcut for this command is Ctrl+→ on Windows and Linux and Command+→ on Mac OS.
    
    See Also:
    
    MOVE_FOCUS_BACK, MOVE_FOCUS_UP, MOVE_FOCUS_DOWN, MOVE_FOCUS_PAGE_UP, MOVE_FOCUS_PAGE_DOWN
  - MOVE_FOCUS_PAGE_DOWN
```
static final ICommand MOVE_FOCUS_PAGE_DOWN
```
    A ICommand to move the focus up a page.
    NavigationInputMode handles this command to focus the first child node, if possible.
    
    The default shortcut for this command is Ctrl+Page↓ on Windows and Linux and Command+↓ on Mac OS.
    
    See Also:
    
    MOVE_FOCUS_BACK, MOVE_FOCUS_FORWARD, MOVE_FOCUS_UP, MOVE_FOCUS_DOWN, MOVE_FOCUS_PAGE_UP
  - MOVE_FOCUS_PAGE_UP
```
static final ICommand MOVE_FOCUS_PAGE_UP
```
    A ICommand to move the focus up a page.
    NavigationInputMode handles this command to focus the parent node, if possible.
    
    The default shortcut for this command is Ctrl+Page↑ on Windows and Linux and Command+↑ on Mac OS.
    
    See Also:
    
    MOVE_FOCUS_BACK, MOVE_FOCUS_FORWARD, MOVE_FOCUS_UP, MOVE_FOCUS_DOWN, MOVE_FOCUS_PAGE_DOWN
  - MOVE_FOCUS_UP
```
static final ICommand MOVE_FOCUS_UP
```
    A ICommand to move the focus upwards.
    NavigationInputMode handles this command to focus the next item above.
    
    The default shortcut for this command is Ctrl+↑ on Windows and Linux and Command+↑ on Mac OS.
    
    See Also:
    
    MOVE_FOCUS_BACK, MOVE_FOCUS_FORWARD, MOVE_FOCUS_DOWN, MOVE_FOCUS_PAGE_UP, MOVE_FOCUS_PAGE_DOWN
  - MOVE_LEFT
```
static final ICommand MOVE_LEFT
```
    A ICommand to move the selection left.
    NavigationInputMode handles this command to select the next item to the left.
    
    The default shortcut for this command is ←.
    
    See Also:
    
    MOVE_UP, MOVE_DOWN, MOVE_RIGHT, MOVE_TO_PAGE_UP, MOVE_TO_PAGE_DOWN
  - MOVE_RIGHT
```
static final ICommand MOVE_RIGHT
```
    A ICommand to move the selection right.
    NavigationInputMode handles this command to select the next item to the right.
    
    The default shortcut for this command is →.
    
    See Also:
    
    MOVE_UP, MOVE_DOWN, MOVE_LEFT, MOVE_TO_PAGE_UP, MOVE_TO_PAGE_DOWN
  - MOVE_TO_PAGE_DOWN
```
static final ICommand MOVE_TO_PAGE_DOWN
```
    A ICommand to move the selection down a page.
    NavigationInputMode handles this command to select the first child node, if possible.
    
    The default shortcut for this command is Page↓.
    
    See Also:
    
    MOVE_UP, MOVE_DOWN, MOVE_LEFT, MOVE_RIGHT, MOVE_TO_PAGE_UP
  - MOVE_TO_PAGE_UP
```
static final ICommand MOVE_TO_PAGE_UP
```
    A ICommand to move the selection up a page.
    NavigationInputMode handles this command to select the parent node, if possible.
    
    The default shortcut for this command is Page↑.
    
    See Also:
    
    MOVE_UP, MOVE_DOWN, MOVE_LEFT, MOVE_RIGHT, MOVE_TO_PAGE_DOWN
  - MOVE_UP
```
static final ICommand MOVE_UP
```
    A ICommand to move the selection up.
    NavigationInputMode handles this command to select the next item above.
    
    The default shortcut for this command is ↑.
    
    See Also:
    
    MOVE_DOWN, MOVE_LEFT, MOVE_RIGHT, MOVE_TO_PAGE_UP, MOVE_TO_PAGE_DOWN
  - NEW
```
static final ICommand NEW
```
    A ICommand to create a new document.
    This command is not necessarily handled by yFiles. Application writers can handle the command in a manner that makes sense in the context of the application, e.g. creating a new graph.
    
    The default shortcut for this command is Ctrl+N on Windows and Linux and Command+N on Mac OS.
  - OPEN
```
static final ICommand OPEN
```
    A ICommand to open a document.
    GraphControl handles this command to open a dialog prompting to open a GraphML file.
    
    The default shortcut for this command is Ctrl+O on Windows and Linux and Command+O on Mac OS.
    
    See Also:
    
    SAVE, SAVE_AS
  - PASTE
```
static final ICommand PASTE
```
    A ICommand to paste from the clipboard.
    GraphEditorInputMode handles this command in conjunction with GraphClipboard. The command parameter can be an IPoint to specify a location for pasting.
    
    The default shortcuts for this command are Ctrl+V and Shift+Ins on Windows and Linux and Command+V and Shift+Ins on Mac OS.
    
    See Also:
    
    CUT, COPY
  - PRINT
```
static final ICommand PRINT
```
    A ICommand to print.
    This command is not necessarily handled by yFiles. Application writers can handle the command in a manner that makes sense in the context of the application, e.g. printing the currently visible portion of the graph.
    
    The default shortcut for this command is Ctrl+P on Windows and Linux and Command+P on Mac OS.
    
    See Also:
    
    PRINT_PREVIEW
  - PRINT_PREVIEW
```
static final ICommand PRINT_PREVIEW
```
    A ICommand that indicates the intention to print and show a preview of what to print beforehand.
    This command is not necessarily handled by yFiles. Application writers can handle the command in a manner that makes sense in the context of the application.
    
    The default shortcut for this command is Ctrl+F2 on Windows and Linux and Command+F2 on Mac OS.
    
    See Also:
    
    PRINT
  - PROPERTIES
```
static final ICommand PROPERTIES
```
    A ICommand to show properties of an item.
    This command is not necessarily handled by yFiles. Application writers can handle the command in a manner that makes sense in the context of the application.
    
    There is no default shortcut for this command.
  - REDO
```
static final ICommand REDO
```
    A ICommand to redo a previously undone operation.
    GraphEditorInputMode handles this command in conjunction with UndoEngine.
    
    The default shortcut for this command is Ctrl+Y on Windows and Linux and Command+Y on Mac OS.
    
    See Also:
    
    UNDO
  - REVERSE_EDGE
```
static final ICommand REVERSE_EDGE
```
    A ICommand that reverses the direction of edges.
    GraphEditorInputMode can execute this command if it is installed in a GraphControl. The Parameter specifies the edges to be reversed and can be an IEdge, an IEnumerable<IEdge> or null. If the parameter is null the currently selected edges will be reversed.
    
    See Also:
    
    GraphEditorInputMode.reverseEdges(java.lang.Iterable)
  - SAVE
```
static final ICommand SAVE
```
    A ICommand to save an item.
    GraphControl handles this command to open a dialog prompting to save the graph as a GraphML file (SAVE_AS), if the graph was never saved before, and simply saving to the previous file name if it was.
    
    The default shortcut for this command is Ctrl+S on Windows and Linux and Command+S on Mac OS.
    
    See Also:
    
    OPEN, SAVE_AS
  - SAVE_AS
```
static final ICommand SAVE_AS
```
    A ICommand to save an item under a new name.
    GraphControl handles this command to open a dialog prompting to save the graph as a GraphML file.
    
    There is no default shortcut for this command.
    
    See Also:
    
    OPEN, SAVE
  - SCROLL_PAGE_DOWN
```
static final ICommand SCROLL_PAGE_DOWN
```
    A ICommand to scroll down.
    CanvasControl handles this command to move the viewport downwards. By default this is done by a full viewport height. The parameter can be a factor that is applied to the viewport height to move the viewport by a different amount.
    
    The default shortcut for this command is Page↓.
    
    See Also:
    
    SCROLL_PAGE_UP, SCROLL_PAGE_LEFT, SCROLL_PAGE_RIGHT
  - SCROLL_PAGE_LEFT
```
static final ICommand SCROLL_PAGE_LEFT
```
    A ICommand to scroll left.
    CanvasControl handles this command to move the viewport to the left. By default this is done by a full viewport width. The parameter can be a factor that is applied to the viewport width to move the viewport by a different amount.
    
    There is no default shortcut for this command.
    
    See Also:
    
    SCROLL_PAGE_UP, SCROLL_PAGE_DOWN, SCROLL_PAGE_RIGHT
  - SCROLL_PAGE_RIGHT
```
static final ICommand SCROLL_PAGE_RIGHT
```
    A ICommand to scroll right.
    CanvasControl handles this command to move the viewport to the right. By default this is done by a full viewport width. The parameter can be a factor that is applied to the viewport width to move the viewport by a different amount.
    
    There is no default shortcut for this command.
    
    See Also:
    
    SCROLL_PAGE_UP, SCROLL_PAGE_DOWN, SCROLL_PAGE_LEFT
  - SCROLL_PAGE_UP
```
static final ICommand SCROLL_PAGE_UP
```
    A ICommand to scroll up.
    CanvasControl handles this command to move the viewport upwards. By default this is done by a full viewport height. The parameter can be a factor that is applied to the viewport height to move the viewport by a different amount.
    
    The default shortcut for this command is Page↑.
    
    See Also:
    
    SCROLL_PAGE_DOWN, SCROLL_PAGE_LEFT, SCROLL_PAGE_RIGHT
  - SELECT_ALL
```
static final ICommand SELECT_ALL
```
    A ICommand to select all items.
    GraphEditorInputMode and GraphViewerInputMode handle this command to select all items in the graph.
    
    The default shortcut for this command is Ctrl+A on Windows and Linux and Command+A on Mac OS.
  - SELECT_ITEM
```
static final ICommand SELECT_ITEM
```
    A ICommand that can be executed from within the GraphControl to select the item that is specified by the Parameter.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - SELECT_TO_PAGE_DOWN
```
static final ICommand SELECT_TO_PAGE_DOWN
```
    A ICommand to extend the selection a page downwards.
    NavigationInputMode handles this command to extend the selection with the first child node, if possible.
    
    The default shortcut for this command is Shift+Page↓.
    
    See Also:
    
    EXTEND_SELECTION_UP, EXTEND_SELECTION_DOWN, EXTEND_SELECTION_LEFT, EXTEND_SELECTION_RIGHT, SELECT_TO_PAGE_UP
  - SELECT_TO_PAGE_UP
```
static final ICommand SELECT_TO_PAGE_UP
```
    A ICommand to extend the selection a page upwards.
    NavigationInputMode handles this command to extend the selection with the parent node, if possible.
    
    The default shortcut for this command is Shift+Page↑.
    
    See Also:
    
    EXTEND_SELECTION_UP, EXTEND_SELECTION_DOWN, EXTEND_SELECTION_LEFT, EXTEND_SELECTION_RIGHT, SELECT_TO_PAGE_DOWN
  - SET_CURRENT_ITEM
```
static final ICommand SET_CURRENT_ITEM
```
    A ICommand that invokes CurrentItem if executed.
  - TOGGLE_EXPANSION_STATE
```
static final ICommand TOGGLE_EXPANSION_STATE
```
    A ICommand that can be executed from within the GraphControl to toggle the collapsed/expanded state of currently selected group nodes.
    If the parameter to this command is null, the currently selected group nodes are toggled. If the parameter is an INode instance, that group node will be toggled. If the parameter is an Iterable instance, then all group nodes in that enumeration are toggled.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - TOGGLE_ITEM_SELECTION
```
static final ICommand TOGGLE_ITEM_SELECTION
```
    A ICommand that can be executed from within the GraphControl to toggle the selection state of the item that is specified by the Parameter.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - UNDO
```
static final ICommand UNDO
```
    A ICommand to undo the previous operation.
    GraphEditorInputMode handles this command in conjunction with UndoEngine.
    
    The default shortcut for this command is Ctrl+Z on Windows and Linux and Command+Z on Mac OS.
    
    See Also:
    
    REDO
  - UNGROUP_SELECTION
```
static final ICommand UNGROUP_SELECTION
```
    A ICommand that can be executed from within the GraphControl to ungroup the currently selected items.
    
    See Also:
    
    KeyboardInputMode.addCommand(ICommand, IEventHandler, IEventHandler)
  - UPDATE_CONTENT_RECT
```
static final ICommand UPDATE_CONTENT_RECT
```
    A ICommand that invokes updateContentRect if executed.
  - ZOOM
```
static final ICommand ZOOM
```
    A ICommand to set the zoom level.
    CanvasControl handles this command to change the viewport. If the parameter is a PointD, the viewport will be centered as that point while not changing the zoom level. If the parameter is a RectD, the viewport will encompass that rectangle and change the zoom level accordingly. If the parameter is an instance of ILookup which returns an instance of IBoundsProvider, that IBoundsProvider will be used to obtain a rectangle, which will be used in the same manner as the RectD mentioned before. This can be used to zoom to a specific IModelItem. Finally, if the parameter is convertible to Double, it will be used as the new zoom level to set.
    
    There is no default shortcut for this command.
    
    See Also:
    
    INCREASE_ZOOM, DECREASE_ZOOM
  - ZOOM_TO_CURRENT_ITEM
```
static final ICommand ZOOM_TO_CURRENT_ITEM
```
    A ICommand that changes the Zoom and the ViewPoint in an animated fashion such that the CurrentItem becomes fully visible.
- Method Detail
  - addCanExecuteChangedListener
```
void addCanExecuteChangedListener(IEventHandler canExecuteChangedEvent)
```
    Adds the given listener for the CanExecuteChanged event that occurs when the result of a call to canExecute(Object, Object) may yield a different result.
    
    Parameters:
    
    canExecuteChangedEvent - The listener to add.
    
    See Also:
    
    removeCanExecuteChangedListener(IEventHandler)
  - canExecute
```
default boolean canExecute()
```
    Determines whether this command be executed with respect to the given parameter and target.
    
    Returns:
    
    Whether execute(Object, Object) can be called with the given parameter and target.
  - canExecute
```
default boolean canExecute(Object parameter)
```
    Determines whether this command be executed with respect to the given parameter and target.
    
    Parameters:
    
    parameter - The parameter or null
    
    Returns:
    
    Whether execute(Object, Object) can be called with the given parameter and target.
  - canExecute
```
boolean canExecute(Object parameter,
                   Object target)
```
    Determines whether this command be executed with respect to the given parameter and target.
    
    Parameters:
    
    parameter - The parameter or null
    
    target - The target to execute the command on or null
    
    Returns:
    
    Whether execute(Object, Object) can be called with the given parameter and target.
  - createCommand
```
static ICommand createCommand()
```
    Creates a new ICommand instance that does nothing.
    The return value serves as a token and does not in itself contain any command handling logic. Use to associate command handlers with the instance returned.
    
    Returns:
    
    A new ICommand instance.
  - createCommand
```
static ICommand createCommand(String name)
```
    Creates a new ICommand instance that does nothing.
    The return value serves as a token and does not in itself contain any command handling logic. Use to associate command handlers with the instance returned.
    
    Parameters:
    
    name - The optional name for the command.
    
    Returns:
    
    A new ICommand instance.
  - execute
```
default void execute()
```
    Executes this command with respect to the given parameter and target.
  - execute
```
default void execute(Object parameter)
```
    Executes this command with respect to the given parameter and target.
    
    Parameters:
    
    parameter - The parameter or null
  - execute
```
void execute(Object parameter,
             Object target)
```
    Executes this command with respect to the given parameter and target.
    
    Parameters:
    
    parameter - The parameter or null
    
    target - The target to execute the command on or null
  - getName
```
String getName()
```
    Gets an optional identifier for this command.
    
    Returns:
    
    The Name.
  - invalidateRequerySuggested
```
static void invalidateRequerySuggested()
```
    Suggests a requery of the executability of all routed commands that are known to the system to adjust the UI to properly reflect the state.
    This will enqueue a delayed query into the event queue.
  - processInput
```
static void processInput(Object sender,
                         boolean keyDown,
                         IEventArgs eventArgs)
```
  - removeCanExecuteChangedListener
```
void removeCanExecuteChangedListener(IEventHandler canExecuteChangedEvent)
```
    Removes the given listener for the CanExecuteChanged event that occurs when the result of a call to canExecute(Object, Object) may yield a different result.
    
    Parameters:
    
    canExecuteChangedEvent - The listener to remove.
    
    See Also:
    
    addCanExecuteChangedListener(IEventHandler)

Interface ICommand

Field Summary

Method Summary

Field Detail

ADD_LABEL

ADJUST_GROUP_NODE_SIZE

BEGIN_EDGE_CREATION

CLOSE

COLLAPSE_GROUP

COPY

CUT

DECREASE_ZOOM

DELETE

DESELECT_ALL

DESELECT_ITEM

DUPLICATE

EDIT_LABEL

ENTER_GROUP

EXIT_GROUP

EXPAND_GROUP

EXTEND_SELECTION_DOWN

EXTEND_SELECTION_LEFT

EXTEND_SELECTION_RIGHT

EXTEND_SELECTION_UP

FIT_CONTENT

FIT_GRAPH_BOUNDS

GROUP_SELECTION

HELP

INCREASE_ZOOM

MOVE_DOWN

MOVE_FOCUS_BACK

MOVE_FOCUS_DOWN

MOVE_FOCUS_FORWARD

MOVE_FOCUS_PAGE_DOWN

MOVE_FOCUS_PAGE_UP

MOVE_FOCUS_UP

MOVE_LEFT

MOVE_RIGHT

MOVE_TO_PAGE_DOWN

MOVE_TO_PAGE_UP

MOVE_UP

NEW

OPEN

PASTE

PRINT

PRINT_PREVIEW

PROPERTIES

REDO

REVERSE_EDGE

SAVE

SAVE_AS

SCROLL_PAGE_DOWN

SCROLL_PAGE_LEFT

SCROLL_PAGE_RIGHT

SCROLL_PAGE_UP

SELECT_ALL

SELECT_ITEM

SELECT_TO_PAGE_DOWN

SELECT_TO_PAGE_UP

SET_CURRENT_ITEM

TOGGLE_EXPANSION_STATE

TOGGLE_ITEM_SELECTION

UNDO

UNGROUP_SELECTION

UPDATE_CONTENT_RECT

ZOOM

ZOOM_TO_CURRENT_ITEM

Method Detail

addCanExecuteChangedListener

canExecute

canExecute

canExecute

createCommand

createCommand

execute

execute

execute

getName

invalidateRequerySuggested

processInput