| Methods Summary |
|---|
| protected javax.swing.SizeRequirements | calculateMinorAxisRequirements(int axis, javax.swing.SizeRequirements r)Calculate equirements along the minor axis. This
is implemented to forward the request to the logical
view by calling getMinimumSpan, getPreferredSpan, and
getMaximumSpan on it.
if (r == null) {
r = new SizeRequirements();
}
float pref = layoutPool.getPreferredSpan(axis);
float min = layoutPool.getMinimumSpan(axis);
// Don't include insets, Box.getXXXSpan will include them.
r.minimum = (int)min;
r.preferred = Math.max(r.minimum, (int) pref);
r.maximum = Integer.MAX_VALUE;
r.alignment = 0.5f;
return r;
|
| public void | changedUpdate(javax.swing.event.DocumentEvent changes, java.awt.Shape a, javax.swing.text.ViewFactory f)Gives notification from the document that attributes were changed
in a location that this view is responsible for.
layoutPool.changedUpdate(changes, a, f);
strategy.changedUpdate(this, changes, getInsideAllocation(a));
|
| protected abstract javax.swing.text.View | createRow()Create a View that should be used to hold a
a rows worth of children in a flow. This is
called by the FlowStrategy when new children
are added or removed (i.e. rows are added or
removed) in the process of updating the flow.
|
| public int | getFlowAxis()Fetches the axis along which views should be
flowed. By default, this will be the axis
orthogonal to the axis along which the flow
rows are tiled (the axis of the default flow
rows themselves). This is typically used
by the FlowStrategy.
if (getAxis() == Y_AXIS) {
return X_AXIS;
}
return Y_AXIS;
|
| public int | getFlowSpan(int index)Fetch the constraining span to flow against for
the given child index. This is called by the
FlowStrategy while it is updating the flow.
A flow can be shaped by providing different values
for the row constraints. By default, the entire
span inside of the insets along the flow axis
is returned.
return layoutSpan;
|
| public int | getFlowStart(int index)Fetch the location along the flow axis that the
flow span will start at. This is called by the
FlowStrategy while it is updating the flow.
A flow can be shaped by providing different values
for the row constraints.
return 0;
|
| protected int | getViewIndexAtPosition(int pos)Fetches the child view index representing the given position in
the model.
if (pos >= getStartOffset() && (pos < getEndOffset())) {
for (int counter = 0; counter < getViewCount(); counter++) {
View v = getView(counter);
if(pos >= v.getStartOffset() &&
pos < v.getEndOffset()) {
return counter;
}
}
}
return -1;
|
| public void | insertUpdate(javax.swing.event.DocumentEvent changes, java.awt.Shape a, javax.swing.text.ViewFactory f)Gives notification that something was inserted into the document
in a location that this view is responsible for.
layoutPool.insertUpdate(changes, a, f);
strategy.insertUpdate(this, changes, getInsideAllocation(a));
|
| protected void | layout(int width, int height)Lays out the children. If the span along the flow
axis has changed, layout is marked as invalid which
which will cause the superclass behavior to recalculate
the layout along the box axis. The FlowStrategy.layout
method will be called to rebuild the flow rows as
appropriate. If the height of this view changes
(determined by the perferred size along the box axis),
a preferenceChanged is called. Following all of that,
the normal box layout of the superclass is performed.
final int faxis = getFlowAxis();
int newSpan;
if (faxis == X_AXIS) {
newSpan = (int)width;
} else {
newSpan = (int)height;
}
if (layoutSpan != newSpan) {
layoutChanged(faxis);
layoutChanged(getAxis());
layoutSpan = newSpan;
}
// repair the flow if necessary
if (! isLayoutValid(faxis)) {
final int heightAxis = getAxis();
int oldFlowHeight = (int)((heightAxis == X_AXIS)? getWidth() : getHeight());
strategy.layout(this);
int newFlowHeight = (int) getPreferredSpan(heightAxis);
if (oldFlowHeight != newFlowHeight) {
View p = getParent();
if (p != null) {
p.preferenceChanged(this, (heightAxis == X_AXIS), (heightAxis == Y_AXIS));
}
// PENDING(shannonh)
// Temporary fix for 4250847
// Can be removed when TraversalContext is added
Component host = getContainer();
if (host != null) {
//nb idk 12/12/2001 host should not be equal to null. We need to add assertion here
host.repaint();
}
}
}
super.layout(width, height);
|
| protected void | loadChildren(javax.swing.text.ViewFactory f)Loads all of the children to initialize the view.
This is called by the setParent method.
This is reimplemented to not load any children directly
(as they are created in the process of formatting).
If the layoutPool variable is null, an instance of
LogicalView is created to represent the logical view
that is used in the process of formatting.
if (layoutPool == null) {
layoutPool = new LogicalView(getElement());
}
layoutPool.setParent(this);
// This synthetic insertUpdate call gives the strategy a chance
// to initialize.
strategy.insertUpdate(this, null, null);
|
| public void | removeUpdate(javax.swing.event.DocumentEvent changes, java.awt.Shape a, javax.swing.text.ViewFactory f)Gives notification that something was removed from the document
in a location that this view is responsible for.
layoutPool.removeUpdate(changes, a, f);
strategy.removeUpdate(this, changes, getInsideAllocation(a));
|
| public void | setParent(javax.swing.text.View parent){@inheritDoc}
super.setParent(parent);
if (parent == null
&& layoutPool != null ) {
layoutPool.setParent(null);
}
|
