bibliothek.gui.dock.station.split
Class Placeholder

java.lang.Object
  extended by bibliothek.gui.dock.station.split.SplitNode
      extended by bibliothek.gui.dock.station.split.Placeholder

public class Placeholder
extends SplitNode

A placeholder is a set of Path-keys, each key stands for a Dockable that is currently not visible. Placeholders are not visible to the user (they have no graphical representation), they are only used to place Dockables at their former position.

Author:
Benjamin Sigg

Field Summary
 
Fields inherited from class bibliothek.gui.dock.station.split.SplitNode
height, width, x, y
 
Constructor Summary
Placeholder(SplitDockAccess access, long id)
          Creates a new placeholder
 
Method Summary
 void evolve(SplitDockTree.Key key, boolean checkValidity, Map<Leaf,Dockable> linksToSet)
          Creates or replaces children according to the values found in key.
 SplitNode getChild(int location)
          Gets the child at location.
 int getChildLocation(SplitNode child)
          Gets the location of a child.
 Node getDividerNode(int x, int y)
          Gets the Node whose divider area contains the point x/y.
 Leaf getLeaf(Dockable dockable)
          Gets the leaf which represents dockable.
 int getMaxChildrenCount()
          Gets the maximal number of children this node can have.
 Dimension getMinimumSize()
          Gets the minimal size of this node.
 Dimension getPreferredSize()
          Gets the preferred size of this node.
 PutInfo getPut(int x, int y, double factorW, double factorH, Dockable drop)
          Determines where to drop the Dockable drop if the mouse is at location x/y.
 SplitNode getVisible()
          Gets the root of a subtree such that the root is visible and such that the is the uppermost visible node.
 boolean insert(SplitDockPathProperty property, int depth, Dockable dockable)
          If there are elements left in property, then the next node is to be read and the insert-method of the matching child to be called.
If there are no children, then dockable has to be inserted as new child.
Otherwise this element is to be replaced by a node containing this and the a leaf with dockable.
Subclasses may wary this scheme in order to optimize or to find a better place for the dockable.
 boolean insert(SplitDockPlaceholderProperty property, Dockable dockable)
          Recursively searches for a node or leaf that uses the placeholder specified by property and inserts the dockable there.
 boolean isInOverrideZone(int x, int y, double factorW, double factorH)
          Tells whether the coordinates x/y lie inside the override-zone of the SplitDockStation or not.
 boolean isOfUse()
          Tells whether this node still has any use or can safely be removed from the tree
 boolean isVisible()
          Tells whether this node (or one of this children) contains element that are visible to the user.
 void setChild(SplitNode child, int location)
          Adds a child to this node at a given location.
<N> N
submit(SplitTreeFactory<N> factory)
          Writes the contents of this node into a new tree create by factory.
 void toString(int tabs, StringBuilder out)
          Writes some contents of this node into out.
 void visit(SplitNodeVisitor visitor)
          Invokes one of the methods of the visitor for every child in the subtree with this as root.
 
Methods inherited from class bibliothek.gui.dock.station.split.SplitNode
above, addPlaceholder, create, create, createLeaf, createNode, createPlaceholder, delete, ensureIdUnique, ensureIdUniqueAsync, getAccess, getBounds, getHeight, getId, getParent, getPlaceholderMap, getPlaceholderNode, getPlaceholders, getRoot, getSize, getStation, getTotalChildrenCount, getWidth, getX, getY, hasPlaceholder, hasPlaceholders, intersection, movePlaceholderMap, relativeSidePut, removePlaceholder, removePlaceholders, replace, setBounds, setParent, setPlaceholderMap, setPlaceholders, toString, treeChanged, updateBounds
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Placeholder

public Placeholder(SplitDockAccess access,
                   long id)
Creates a new placeholder

Parameters:
access - access to the SplitDockStation
id - the unique id of this placeholder
Method Detail

evolve

public void evolve(SplitDockTree.Key key,
                   boolean checkValidity,
                   Map<Leaf,Dockable> linksToSet)
Description copied from class: SplitNode
Creates or replaces children according to the values found in key. Note that this method does not remove any Dockables from the station. They must be removed explicitly using Leaf.setDockable(Dockable, bibliothek.gui.dock.DockHierarchyLock.Token)

Specified by:
evolve in class SplitNode
Parameters:
key - the key to read
checkValidity - whether to ensure that all new Dockables are acceptable or not.
linksToSet - a map that is to be filled with all new Leafs and their Dockables which are not yet set.

getChildLocation

public int getChildLocation(SplitNode child)
Description copied from class: SplitNode
Gets the location of a child.

Specified by:
getChildLocation in class SplitNode
Parameters:
child - a child of this node
Returns:
the location of child or -1 if the child is unknown

getDividerNode

public Node getDividerNode(int x,
                           int y)
Description copied from class: SplitNode
Gets the Node whose divider area contains the point x/y. Only searches in the subtree with this node as root.

Specified by:
getDividerNode in class SplitNode
Parameters:
x - the x-coordinate
y - the y-coordinate
Returns:
the Node containing the point, if no Node was found, null is returned

getLeaf

public Leaf getLeaf(Dockable dockable)
Description copied from class: SplitNode
Gets the leaf which represents dockable.

Specified by:
getLeaf in class SplitNode
Parameters:
dockable - the Dockable whose leaf is searched
Returns:
the leaf or null if no leaf was found

getMinimumSize

public Dimension getMinimumSize()
Description copied from class: SplitNode
Gets the minimal size of this node.

Specified by:
getMinimumSize in class SplitNode
Returns:
the minimal size in pixel

getPreferredSize

public Dimension getPreferredSize()
Description copied from class: SplitNode
Gets the preferred size of this node.

Specified by:
getPreferredSize in class SplitNode
Returns:
the preferred size in pixel

getPut

public PutInfo getPut(int x,
                      int y,
                      double factorW,
                      double factorH,
                      Dockable drop)
Description copied from class: SplitNode
Determines where to drop the Dockable drop if the mouse is at location x/y.

Specified by:
getPut in class SplitNode
Parameters:
x - the x-coordinate of the mouse
y - the y-coordinate of the mouse
factorW - a factor to be multiplied with the relative x and width to get the size in pixel.
factorH - a factor to be multiplied with the relative y and height to get the size in pixel.
drop - the Dockable which will be dropped
Returns:
where to drop the dockable or null if the dockable can't be dropped

insert

public boolean insert(SplitDockPlaceholderProperty property,
                      Dockable dockable)
Description copied from class: SplitNode
Recursively searches for a node or leaf that uses the placeholder specified by property and inserts the dockable there. Also removes the placeholder from this node.

Specified by:
insert in class SplitNode
Parameters:
property - the placeholder to search
dockable - the new element
Returns:
true if the element was inserted, false otherwise

insert

public boolean insert(SplitDockPathProperty property,
                      int depth,
                      Dockable dockable)
Description copied from class: SplitNode
If there are elements left in property, then the next node is to be read and the insert-method of the matching child to be called.
If there are no children, then dockable has to be inserted as new child.
Otherwise this element is to be replaced by a node containing this and the a leaf with dockable.
Subclasses may wary this scheme in order to optimize or to find a better place for the dockable.

Specified by:
insert in class SplitNode
Parameters:
property - a list of nodes
depth - the index of the node that corresponds to this
dockable - the element to insert
Returns:
true if the element was inserted, false otherwise

isInOverrideZone

public boolean isInOverrideZone(int x,
                                int y,
                                double factorW,
                                double factorH)
Description copied from class: SplitNode
Tells whether the coordinates x/y lie inside the override-zone of the SplitDockStation or not.

Specified by:
isInOverrideZone in class SplitNode
Parameters:
x - the x-coordinate of the mouse
y - the y-coordinate of the mouse
factorW - a factor to be multiplied with the relative x and width to get the size in pixel.
factorH - a factor to be multiplied with the relative y and height to get the size in pixel.
Returns:
true if the station should not allow child-stations to make a drop when the mouse is at x/y

setChild

public void setChild(SplitNode child,
                     int location)
Description copied from class: SplitNode
Adds a child to this node at a given location.

Specified by:
setChild in class SplitNode
Parameters:
child - the new child
location - the location of the child

getMaxChildrenCount

public int getMaxChildrenCount()
Description copied from class: SplitNode
Gets the maximal number of children this node can have.

Specified by:
getMaxChildrenCount in class SplitNode
Returns:
the maximal number of children

getChild

public SplitNode getChild(int location)
Description copied from class: SplitNode
Gets the child at location.

Specified by:
getChild in class SplitNode
Parameters:
location - the location of the child
Returns:
the child or null if the location is invalid or if there is no child at the location

submit

public <N> N submit(SplitTreeFactory<N> factory)
Description copied from class: SplitNode
Writes the contents of this node into a new tree create by factory.

Specified by:
submit in class SplitNode
Type Parameters:
N - the type of element the factory will create
Parameters:
factory - the factory transforming the elements of the tree into a new form.
Returns:
the representation of this node

isVisible

public boolean isVisible()
Description copied from class: SplitNode
Tells whether this node (or one of this children) contains element that are visible to the user.

Specified by:
isVisible in class SplitNode
Returns:
true if this node or one of its children contains a graphical element

getVisible

public SplitNode getVisible()
Description copied from class: SplitNode
Gets the root of a subtree such that the root is visible and such that the is the uppermost visible node.

Specified by:
getVisible in class SplitNode
Returns:
the visible root, can be null, this or any child of this node

isOfUse

public boolean isOfUse()
Description copied from class: SplitNode
Tells whether this node still has any use or can safely be removed from the tree

Specified by:
isOfUse in class SplitNode
Returns:
true if this node has to remain in the tree, false otherwise

visit

public void visit(SplitNodeVisitor visitor)
Description copied from class: SplitNode
Invokes one of the methods of the visitor for every child in the subtree with this as root.

Specified by:
visit in class SplitNode
Parameters:
visitor - the visitor

toString

public void toString(int tabs,
                     StringBuilder out)
Description copied from class: SplitNode
Writes some contents of this node into out.

Specified by:
toString in class SplitNode
Parameters:
tabs - the number of tabs that should be added before the text if a new line is necessary.
out - the container to write into