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public static class FlowView.FlowStrategy extends Object
Strategy for maintaining the physical form of the flow. The default implementation is completely stateless, and recalculates the entire flow if the layout is invalid on the given FlowView. Alternative strategies can be implemented by subclassing, and might perform incrementatal repair to the layout or alternative breaking behavior.
Constructor Summary | |
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Method Summary | |
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protected void |
Adjusts the given row if possible to fit within the layout span. |
void |
changedUpdate(FlowView fv, DocumentEvent e, Rectangle alloc) Gives notification from the document that attributes were changed in a location that this view is responsible for. |
protected View |
createView(FlowView fv, int startOffset, int spanLeft, int rowIndex) Creates a view that can be used to represent the current piece of the flow. |
protected View |
This method gives flow strategies access to the logical view of the FlowView. |
void |
insertUpdate(FlowView fv, DocumentEvent e, Rectangle alloc) Gives notification that something was inserted into the document in a location that the given flow view is responsible for. |
void |
Update the flow on the given FlowView. |
protected int |
Creates a row of views that will fit within the layout span of the row. |
void |
removeUpdate(FlowView fv, DocumentEvent e, Rectangle alloc) Gives notification that something was removed from the document in a location that the given flow view is responsible for. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public FlowView.FlowStrategy()
Method Detail |
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protected void adjustRow(FlowView fv, int rowIndex, int desiredSpan, int x)
fv
rowIndex
- the row to adjust to the current layout
span.desiredSpan
- the current layout span >= 0x
- the location r starts at.public void changedUpdate(FlowView fv, DocumentEvent e, Rectangle alloc)
fv
- the FlowView
containing the changese
- the DocumentEvent
describing the changes
done to the Documentalloc
- Bounds of the Viewprotected View createView(FlowView fv, int startOffset, int spanLeft, int rowIndex)
fv
- the view holding the flowstartOffset
- the start location for the view being createdspanLeft
- the about of span left to fill in the rowrowIndex
- the row the view will be placed intoprotected View getLogicalView(FlowView fv)
fv
public void insertUpdate(FlowView fv, DocumentEvent e, Rectangle alloc)
fv
e
- the change information from the associated documentalloc
- the current allocation of the view inside of the insets.
This value will be null if the view has not yet been displayed.public void layout(FlowView fv)
fv
- the view to reflowprotected int layoutRow(FlowView fv, int rowIndex, int pos)
fv
rowIndex
- the index of the row to fill in with views. The
row is assumed to be empty on entry.pos
- The current position in the children of
this views element from which to start.public void removeUpdate(FlowView fv, DocumentEvent e, Rectangle alloc)
fv
e
- the change information from the associated documentalloc
- the current allocation of the view inside of the insets.
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