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* published by the Free Software Foundation. Oracle designates this
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/**
* A <code>SpinnerModel</code> for sequences of numbers.
* The upper and lower bounds of the sequence are defined
* by properties called <code>minimum</code> and
* <code>maximum</code>. The size of the increase or decrease
* computed by the <code>nextValue</code> and
* <code>previousValue</code> methods is defined by a property called
* <code>stepSize</code>. The <code>minimum</code> and
* <code>maximum</code> properties can be <code>null</code>
* to indicate that the sequence has no lower or upper limit.
* All of the properties in this class are defined in terms of two
* generic types: <code>Number</code> and
* <code>Comparable</code>, so that all Java numeric types
* may be accommodated. Internally, there's only support for
* values whose type is one of the primitive <code>Number</code> types:
* <code>Double</code>, <code>Float</code>, <code>Long</code>,
* <code>Integer</code>, <code>Short</code>, or <code>Byte</code>.
* <p>
* To create a <code>SpinnerNumberModel</code> for the integer
* range zero to one hundred, with
* fifty as the initial value, one could write:
* <pre>
* Integer value = new Integer(50);
* Integer min = new Integer(0);
* Integer max = new Integer(100);
* Integer step = new Integer(1);
* SpinnerNumberModel model = new SpinnerNumberModel(value, min, max, step);
* int fifty = model.getNumber().intValue();
* </pre>
* <p>
* Spinners for integers and doubles are common, so special constructors
* for these cases are provided. For example to create the model in
* the previous example, one could also write:
* <pre>
* SpinnerNumberModel model = new SpinnerNumberModel(50, 0, 100, 1);
* </pre>
* <p>
* This model inherits a <code>ChangeListener</code>.
* The <code>ChangeListeners</code> are notified
* whenever the model's <code>value</code>, <code>stepSize</code>,
* <code>minimum</code>, or <code>maximum</code> properties changes.
*
* @see JSpinner
* @see SpinnerModel
* @see AbstractSpinnerModel
* @see SpinnerListModel
* @see SpinnerDateModel
*
* @author Hans Muller
* @since 1.4
*/
{
/**
* Constructs a <code>SpinnerModel</code> that represents
* a closed sequence of
* numbers from <code>minimum</code> to <code>maximum</code>. The
* <code>nextValue</code> and <code>previousValue</code> methods
* compute elements of the sequence by adding or subtracting
* <code>stepSize</code> respectively. All of the parameters
* must be mutually <code>Comparable</code>, <code>value</code>
* and <code>stepSize</code> must be instances of <code>Integer</code>
* <code>Long</code>, <code>Float</code>, or <code>Double</code>.
* <p>
* The <code>minimum</code> and <code>maximum</code> parameters
* can be <code>null</code> to indicate that the range doesn't
* have an upper or lower bound.
* If <code>value</code> or <code>stepSize</code> is <code>null</code>,
* or if both <code>minimum</code> and <code>maximum</code>
* are specified and <code>mininum > maximum</code> then an
* <code>IllegalArgumentException</code> is thrown.
* Similarly if <code>(minimum <= value <= maximum</code>) is false,
* an <code>IllegalArgumentException</code> is thrown.
*
* @param value the current (non <code>null</code>) value of the model
* @param minimum the first number in the sequence or <code>null</code>
* @param maximum the last number in the sequence or <code>null</code>
* @param stepSize the difference between elements of the sequence
*
* @throws IllegalArgumentException if stepSize or value is
* <code>null</code> or if the following expression is false:
* <code>minimum <= value <= maximum</code>
*/
throw new IllegalArgumentException("value and stepSize must be non-null");
}
throw new IllegalArgumentException("(minimum <= value <= maximum) is false");
}
}
/**
* Constructs a <code>SpinnerNumberModel</code> with the specified
* <code>value</code>, <code>minimum</code>/<code>maximum</code> bounds,
* and <code>stepSize</code>.
*
* @param value the current value of the model
* @param minimum the first number in the sequence
* @param maximum the last number in the sequence
* @param stepSize the difference between elements of the sequence
* @throws IllegalArgumentException if the following expression is false:
* <code>minimum <= value <= maximum</code>
*/
this(Integer.valueOf(value), Integer.valueOf(minimum), Integer.valueOf(maximum), Integer.valueOf(stepSize));
}
/**
* Constructs a <code>SpinnerNumberModel</code> with the specified
* <code>value</code>, <code>minimum</code>/<code>maximum</code> bounds,
* and <code>stepSize</code>.
*
* @param value the current value of the model
* @param minimum the first number in the sequence
* @param maximum the last number in the sequence
* @param stepSize the difference between elements of the sequence
* @throws IllegalArgumentException if the following expression is false:
* <code>minimum <= value <= maximum</code>
*/
}
/**
* Constructs a <code>SpinnerNumberModel</code> with no
* <code>minimum</code> or <code>maximum</code> value,
* <code>stepSize</code> equal to one, and an initial value of zero.
*/
public SpinnerNumberModel() {
}
/**
* Changes the lower bound for numbers in this sequence.
* If <code>minimum</code> is <code>null</code>,
* then there is no lower bound. No bounds checking is done here;
* the new <code>minimum</code> value may invalidate the
* <code>(minimum <= value <= maximum)</code>
* invariant enforced by the constructors. This is to simplify updating
* the model, naturally one should ensure that the invariant is true
* before calling the <code>getNextValue</code>,
* <code>getPreviousValue</code>, or <code>setValue</code> methods.
* <p>
* Typically this property is a <code>Number</code> of the same type
* as the <code>value</code> however it's possible to use any
* <code>Comparable</code> with a <code>compareTo</code>
* method for a <code>Number</code> with the same type as the value.
* For example if value was a <code>Long</code>,
* <code>minimum</code> might be a Date subclass defined like this:
* <pre>
* MyDate extends Date { // Date already implements Comparable
* public int compareTo(Long o) {
* long t = getTime();
* return (t < o.longValue() ? -1 : (t == o.longValue() ? 0 : 1));
* }
* }
* </pre>
* <p>
* This method fires a <code>ChangeEvent</code>
* if the <code>minimum</code> has changed.
*
* @param minimum a <code>Comparable</code> that has a
* <code>compareTo</code> method for <code>Number</code>s with
* the same type as <code>value</code>
* @see #getMinimum
* @see #setMaximum
* @see SpinnerModel#addChangeListener
*/
}
}
/**
* Returns the first number in this sequence.
*
* @return the value of the <code>minimum</code> property
* @see #setMinimum
*/
return minimum;
}
/**
* Changes the upper bound for numbers in this sequence.
* If <code>maximum</code> is <code>null</code>, then there
* is no upper bound. No bounds checking is done here; the new
* <code>maximum</code> value may invalidate the
* <code>(minimum <= value < maximum)</code>
* invariant enforced by the constructors. This is to simplify updating
* the model, naturally one should ensure that the invariant is true
* before calling the <code>next</code>, <code>previous</code>,
* or <code>setValue</code> methods.
* <p>
* Typically this property is a <code>Number</code> of the same type
* as the <code>value</code> however it's possible to use any
* <code>Comparable</code> with a <code>compareTo</code>
* method for a <code>Number</code> with the same type as the value.
* See <a href="#setMinimum(java.lang.Comparable)">
* <code>setMinimum</code></a> for an example.
* <p>
* This method fires a <code>ChangeEvent</code> if the
* <code>maximum</code> has changed.
*
* @param maximum a <code>Comparable</code> that has a
* <code>compareTo</code> method for <code>Number</code>s with
* the same type as <code>value</code>
* @see #getMaximum
* @see #setMinimum
* @see SpinnerModel#addChangeListener
*/
}
}
/**
* Returns the last number in the sequence.
*
* @return the value of the <code>maximum</code> property
* @see #setMaximum
*/
return maximum;
}
/**
* Changes the size of the value change computed by the
* <code>getNextValue</code> and <code>getPreviousValue</code>
* methods. An <code>IllegalArgumentException</code>
* is thrown if <code>stepSize</code> is <code>null</code>.
* <p>
* This method fires a <code>ChangeEvent</code> if the
* <code>stepSize</code> has changed.
*
* @param stepSize the size of the value change computed by the
* <code>getNextValue</code> and <code>getPreviousValue</code> methods
* @see #getNextValue
* @see #getPreviousValue
* @see #getStepSize
* @see SpinnerModel#addChangeListener
*/
throw new IllegalArgumentException("null stepSize");
}
}
}
/**
* Returns the size of the value change computed by the
* <code>getNextValue</code>
* and <code>getPreviousValue</code> methods.
*
* @return the value of the <code>stepSize</code> property
* @see #setStepSize
*/
return stepSize;
}
{
}
else {
}
}
else {
}
}
}
else {
}
}
return null;
}
return null;
}
else {
return newValue;
}
}
/**
* Returns the next number in the sequence.
*
* @return <code>value + stepSize</code> or <code>null</code> if the sum
* exceeds <code>maximum</code>.
*
* @see SpinnerModel#getNextValue
* @see #getPreviousValue
* @see #setStepSize
*/
return incrValue(+1);
}
/**
* Returns the previous number in the sequence.
*
* @return <code>value - stepSize</code>, or
* <code>null</code> if the sum is less
* than <code>minimum</code>.
*
* @see SpinnerModel#getPreviousValue
* @see #getNextValue
* @see #setStepSize
*/
return incrValue(-1);
}
/**
* Returns the value of the current element of the sequence.
*
* @return the value property
* @see #setValue
*/
return value;
}
/**
* Returns the value of the current element of the sequence.
*
* @return the value property
* @see #setValue
* @see #getNumber
*/
return value;
}
/**
* Sets the current value for this sequence. If <code>value</code> is
* <code>null</code>, or not a <code>Number</code>, an
* <code>IllegalArgumentException</code> is thrown. No
* bounds checking is done here; the new value may invalidate the
* <code>(minimum <= value <= maximum)</code>
* invariant enforced by the constructors. It's also possible to set
* the value to be something that wouldn't naturally occur in the sequence,
* i.e. a value that's not modulo the <code>stepSize</code>.
* This is to simplify updating the model, and to accommodate
* spinners that don't want to restrict values that have been
* directly entered by the user. Naturally, one should ensure that the
* <code>(minimum <= value <= maximum)</code> invariant is true
* before calling the <code>next</code>, <code>previous</code>, or
* <code>setValue</code> methods.
* <p>
* This method fires a <code>ChangeEvent</code> if the value has changed.
*
* @param value the current (non <code>null</code>) <code>Number</code>
* for this sequence
* @throws IllegalArgumentException if <code>value</code> is
* <code>null</code> or not a <code>Number</code>
* @see #getNumber
* @see #getValue
* @see SpinnerModel#addChangeListener
*/
throw new IllegalArgumentException("illegal value");
}
}
}
}