|
|||||||||
| Home >> All >> openfuture >> util >> [ layout overview ] | PREV CLASS NEXT CLASS | ||||||||
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||
openfuture.util.layout
Class XmFormLayout
java.lang.Objectopenfuture.util.layout.XmFormLayout
- All Implemented Interfaces:
- java.awt.LayoutManager
- public class XmFormLayout
- extends java.lang.Object
- implements java.awt.LayoutManager
- extends java.lang.Object
| Field Summary | |
(package private) static boolean |
bigDebug
|
(package private) static int |
BITSET
|
(package private) static int |
BOTTOM
|
(package private) boolean |
changedFlag
|
(package private) static int |
COMPONENT
Component tuple constants, these must range from 0...6. |
(package private) java.lang.String[] |
constraints
|
(package private) static boolean |
debug
|
(package private) static int |
FORM
Other constants. |
(package private) java.awt.Dimension |
formDimensions
|
(package private) java.awt.Point |
formLocation
|
(package private) static int |
INVALID
|
(package private) static int |
LEFT
|
(package private) java.lang.String |
myName
The constraints and the results of the last reshape() computations. |
(package private) static int |
NAME
|
(package private) java.util.Hashtable |
nameToIndex
|
(package private) static int |
RIGHT
|
(package private) static int |
TOP
|
(package private) java.util.Vector |
tuples
|
(package private) static int |
UNBOUND
|
| Constructor Summary | |
XmFormLayout(java.lang.String constraintsURLOrFile)
The constructor for reading constraints from file or URL |
|
XmFormLayout(java.lang.String[] newConstraints)
The constructor. |
|
| Method Summary | |
void |
addLayoutComponent(java.lang.String name,
java.awt.Component component)
Add a component. |
private int |
evaluate(java.lang.String expression)
Parses an expression 'a.b+c' (or 'a.b-c' or 'a.b' or '+c' or '-c') into an rvalue 'a.b' and a signed number 'c'. |
private boolean |
explicit(java.util.BitSet constraintBitset)
Enforce explicit constraints by binding lvalues and also marking those lvalues which can't be bound. |
private int |
getAttr(int componentNr,
int attrNr)
If the attribute is bound then return its' value, otherwise return XmFormLayout.UNBOUND. |
private int |
getAttr(java.lang.String fqAttrName)
If the attribute is bound then return its' value, otherwise return XmFormLayout.UNBOUND. |
private int |
getAttrNr(java.lang.String attrName)
|
private java.util.BitSet |
getBitset(int componentNr)
|
private java.awt.Component |
getComponent(int componentNr)
|
private java.lang.String |
getComponentName(int componentNr)
|
private int |
getComponentNr(java.lang.String componentName)
|
private int |
getOffset(int componentNr,
int attrNr)
Returns the preferred offset (width or height) between the specified attribute and its' opposite. |
private boolean |
implicit()
Enforces implicit constraints by binding component attributes which haven't an lvalue in ANY explicit constraint and whose opposite attribute is already bound, e.g. |
private boolean |
isBound(int componentNr,
int attributeNr)
Returns true if this component's attribute was bound; that is, if this.setAttr() was called. |
private boolean |
isMarked(int componentNr,
int attributeNr)
Returns true if this component's attribute is an lvalue in any explicit constraint; that is, if this.setMarked() was called. |
void |
layoutContainer(java.awt.Container parent)
Reshape all components in the container. |
java.awt.Dimension |
minimumLayoutSize(java.awt.Container parent)
XmFormLayout knowns only one size (the preferred size). |
private int |
opposite(int attrNr)
|
private int[] |
parseAttr(java.lang.String fqAttrName)
Parse a fully-qualified attribute name 'a.b' into a component 'a' and an attribute 'b', and return the component number and attribute number. |
java.awt.Dimension |
preferredLayoutSize(java.awt.Container parent)
Calculates the preferred size for this container, taking into account the components it contains. |
private void |
processConstraints(java.lang.String[] newConstraints)
|
private java.lang.String[] |
readConstraintsFromFile(java.lang.String fileConstraints)
|
private java.lang.String[] |
readConstraintsFromStream(java.io.BufferedReader inStream)
|
private java.lang.String[] |
readConstraintsFromURL(java.lang.String urlConstraints)
|
private void |
reconstrain()
Layout the container according to constraints. |
private java.lang.String |
removeBlanks(java.lang.String name)
remove blanks from a constraint and return the result |
void |
removeLayoutComponent(java.awt.Component oldComponent)
Removes a component. |
private void |
reshape(int x,
int y,
int w,
int h)
If the container's location or shape has changed, or if any of the component's have changed, then re-compute the constraints; otherwise use what was already computed. |
private boolean |
setAttr(int componentNr,
int attrNr,
int value)
Try to set a attribute; returns true if the was set or false if it was deferred (the latter will happen if the value is XmFormLayout.UNBOUND). |
private boolean |
setAttr(java.lang.String fqAttrName,
int value)
Try to set a attribute 'c.a'; returns true if the was set or false if it was deferred (the latter will happen if the value is XmFormLayout.UNBOUND). |
private void |
setBound(int componentNr,
int attrNr)
|
private void |
setMarked(int componentNr,
int attrNr)
|
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
COMPONENT
static final int COMPONENT
- Component tuple constants, these must range from 0...6.
Attribute numbers must range from BOTTOM...TOP.
- See Also:
- Constant Field Values
BOTTOM
static final int BOTTOM
- See Also:
- Constant Field Values
LEFT
static final int LEFT
- See Also:
- Constant Field Values
RIGHT
static final int RIGHT
- See Also:
- Constant Field Values
TOP
static final int TOP
- See Also:
- Constant Field Values
BITSET
static final int BITSET
- See Also:
- Constant Field Values
NAME
static final int NAME
- See Also:
- Constant Field Values
FORM
static final int FORM
- Other constants.
- See Also:
- Constant Field Values
INVALID
static final int INVALID
- See Also:
- Constant Field Values
UNBOUND
static final int UNBOUND
- See Also:
- Constant Field Values
debug
static final boolean debug
- See Also:
- Constant Field Values
bigDebug
static final boolean bigDebug
- See Also:
- Constant Field Values
myName
java.lang.String myName
- The constraints and the results of the
last reshape() computations.
formDimensions
java.awt.Dimension formDimensions
formLocation
java.awt.Point formLocation
tuples
java.util.Vector tuples
nameToIndex
java.util.Hashtable nameToIndex
constraints
java.lang.String[] constraints
changedFlag
boolean changedFlag
| Constructor Detail |
XmFormLayout
public XmFormLayout(java.lang.String[] newConstraints)
- The constructor.
XmFormLayout
public XmFormLayout(java.lang.String constraintsURLOrFile)
- The constructor for reading constraints from file or URL
| Method Detail |
addLayoutComponent
public void addLayoutComponent(java.lang.String name, java.awt.Component component)
- Add a component.
- Specified by:
addLayoutComponentin interfacejava.awt.LayoutManager
evaluate
private final int evaluate(java.lang.String expression) throws java.lang.Exception
- Parses an expression 'a.b+c' (or 'a.b-c' or 'a.b' or
'+c' or '-c') into an rvalue 'a.b' and a signed
number 'c'. If the rvalue is unbound then return
XmFormLayout.UNBOUND, otherwise return the value of
the expression.
explicit
private final boolean explicit(java.util.BitSet constraintBitset) throws java.lang.Exception
- Enforce explicit constraints by binding lvalues and
also marking those lvalues which can't be bound.
Parses an explicit constraint 'a.b=c.d+e' into
an lvalue 'a.b' and an expression 'c.d+e'.
Returns true if all possible explicit lvalues are bound.
getAttr
private final int getAttr(int componentNr,
int attrNr)
- If the attribute is bound then return its'
value, otherwise return XmFormLayout.UNBOUND.
getAttr
private final int getAttr(java.lang.String fqAttrName) throws java.lang.Exception
- If the attribute is bound then return its'
value, otherwise return XmFormLayout.UNBOUND.
getAttrNr
private final int getAttrNr(java.lang.String attrName)
getBitset
private final java.util.BitSet getBitset(int componentNr)
getComponent
private final java.awt.Component getComponent(int componentNr)
getComponentName
private final java.lang.String getComponentName(int componentNr)
getComponentNr
private final int getComponentNr(java.lang.String componentName) throws java.lang.Exception
getOffset
private final int getOffset(int componentNr,
int attrNr)
- Returns the preferred offset (width or height)
between the specified attribute and its' opposite.
implicit
private final boolean implicit()
throws java.lang.Exception
- Enforces implicit constraints by binding component
attributes which haven't an lvalue in ANY explicit
constraint and whose opposite attribute is already
bound, e.g. if foo.top isn't an lvalue in any explicit
constraint, and foo.bottom is bound, and foo has a
preferred height of 123, then enforce this implicit
constraint:
"foo.top=foo.bottom-123"
Returns true if all possible implicit constraints are bound.
isBound
private final boolean isBound(int componentNr,
int attributeNr)
- Returns true if this component's attribute was
bound; that is, if this.setAttr() was called.
isMarked
private final boolean isMarked(int componentNr,
int attributeNr)
- Returns true if this component's attribute is
an lvalue in any explicit constraint; that is,
if this.setMarked() was called.
layoutContainer
public void layoutContainer(java.awt.Container parent)
- Reshape all components in the container. Typically,
this causes a call to this.reconstrain() only the first time.
- Specified by:
layoutContainerin interfacejava.awt.LayoutManager
minimumLayoutSize
public java.awt.Dimension minimumLayoutSize(java.awt.Container parent)
- XmFormLayout knowns only one size (the preferred size).
- Specified by:
minimumLayoutSizein interfacejava.awt.LayoutManager
opposite
private final int opposite(int attrNr)
parseAttr
private final int[] parseAttr(java.lang.String fqAttrName) throws java.lang.Exception
- Parse a fully-qualified attribute name 'a.b' into
a component 'a' and an attribute 'b', and return
the component number and attribute number.
preferredLayoutSize
public java.awt.Dimension preferredLayoutSize(java.awt.Container parent)
- Description copied from interface:
java.awt.LayoutManager - Calculates the preferred size for this container, taking into account
the components it contains.
- Specified by:
preferredLayoutSizein interfacejava.awt.LayoutManager
processConstraints
private void processConstraints(java.lang.String[] newConstraints)
readConstraintsFromFile
private java.lang.String[] readConstraintsFromFile(java.lang.String fileConstraints)
readConstraintsFromStream
private java.lang.String[] readConstraintsFromStream(java.io.BufferedReader inStream)
readConstraintsFromURL
private java.lang.String[] readConstraintsFromURL(java.lang.String urlConstraints)
reconstrain
private final void reconstrain()
throws java.lang.Exception
- Layout the container according to constraints.
This may be time-consuming, so it should only be
done if changedFlag is true.
removeBlanks
private java.lang.String removeBlanks(java.lang.String name)
- remove blanks from a constraint and return the result
removeLayoutComponent
public void removeLayoutComponent(java.awt.Component oldComponent)
- Removes a component. This isn't particularly fast,
but it is rarely called, if ever.
- Specified by:
removeLayoutComponentin interfacejava.awt.LayoutManager
reshape
private final void reshape(int x,
int y,
int w,
int h)
- If the container's location or shape has
changed, or if any of the component's have
changed, then re-compute the constraints;
otherwise use what was already computed.
setAttr
private final boolean setAttr(int componentNr,
int attrNr,
int value)
throws java.lang.Exception
- Try to set a attribute; returns true if the was set
or false if it was deferred (the latter will happen
if the value is XmFormLayout.UNBOUND).
setAttr
private final boolean setAttr(java.lang.String fqAttrName, int value) throws java.lang.Exception
- Try to set a attribute 'c.a'; returns true if the
was set or false if it was deferred (the latter
will happen if the value is XmFormLayout.UNBOUND).
setBound
private final void setBound(int componentNr,
int attrNr)
setMarked
private final void setMarked(int componentNr,
int attrNr)
|
|||||||||
| Home >> All >> openfuture >> util >> [ layout overview ] | PREV CLASS NEXT CLASS | ||||||||
|
SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||