240 lines
7.0 KiB
Java
240 lines
7.0 KiB
Java
/*
|
|
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
|
* (the "License"); you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
|
|
* WARRANTY OF ANY KIND, either express or implied. See the License for the specific
|
|
* language governing rights and limitations under the License.
|
|
*
|
|
* The Original Code is the Venice Web Communities System.
|
|
*
|
|
* The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
|
|
* for Silverwrist Design Studios. Portions created by Eric J. Bowersox are
|
|
* Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
package com.silverwrist.venice.ui.dlg;
|
|
|
|
import java.io.IOException;
|
|
import org.w3c.dom.*;
|
|
import com.silverwrist.util.*;
|
|
import com.silverwrist.venice.except.*;
|
|
import com.silverwrist.venice.ui.*;
|
|
import com.silverwrist.venice.util.XMLLoader;
|
|
|
|
public class IntegerField extends TextField
|
|
{
|
|
/*--------------------------------------------------------------------------------
|
|
* Static data members
|
|
*--------------------------------------------------------------------------------
|
|
*/
|
|
|
|
private static final double LN10 = Math.log(10.0);
|
|
|
|
public static final String TAGNAME = "int";
|
|
|
|
/*--------------------------------------------------------------------------------
|
|
* Attributes
|
|
*--------------------------------------------------------------------------------
|
|
*/
|
|
|
|
private int min_value; // minimum value for this field
|
|
private int max_value; // maximum value for this field
|
|
|
|
/*--------------------------------------------------------------------------------
|
|
* Constructors
|
|
*--------------------------------------------------------------------------------
|
|
*/
|
|
|
|
public IntegerField(String name, String caption, String caption2, int min, int max)
|
|
{
|
|
super(name,caption,caption2,true,numDigits(min,max));
|
|
if (min<max)
|
|
{ // assign the min and max values normally
|
|
this.min_value = min;
|
|
this.max_value = max;
|
|
|
|
} // end if
|
|
else
|
|
{ // swap the values round so they're ordered right
|
|
this.min_value = max;
|
|
this.max_value = min;
|
|
|
|
} // end else
|
|
|
|
} // end constructor
|
|
|
|
public IntegerField(Element elt) throws ConfigException
|
|
{
|
|
super(elt,numDigits(elt));
|
|
XMLLoader loader = XMLLoader.get();
|
|
DOMElementHelper h = new DOMElementHelper(elt);
|
|
if (h.hasAttribute("min"))
|
|
min_value = loader.configGetAttributeInt(elt,"min");
|
|
else
|
|
min_value = Integer.MIN_VALUE;
|
|
if (h.hasAttribute("max"))
|
|
max_value = loader.configGetAttributeInt(elt,"max");
|
|
else
|
|
max_value = Integer.MAX_VALUE;
|
|
if (max_value<min_value)
|
|
{ // swap round the two values to put them in the right order
|
|
int t = min_value;
|
|
min_value = max_value;
|
|
max_value = t;
|
|
|
|
} // end if
|
|
|
|
} // end constructor
|
|
|
|
protected IntegerField(IntegerField other)
|
|
{
|
|
super(other);
|
|
this.min_value = other.min_value;
|
|
this.max_value = other.max_value;
|
|
|
|
} // end constructor
|
|
|
|
/*--------------------------------------------------------------------------------
|
|
* Internal operations
|
|
*--------------------------------------------------------------------------------
|
|
*/
|
|
|
|
private static final int numDigits(int v)
|
|
{
|
|
if (v==0)
|
|
return 1;
|
|
else if (v>0)
|
|
return 1 + (int)(Math.floor(Math.log((double)v) / LN10));
|
|
else
|
|
return 2 + (int)(Math.floor(Math.log((double)(-v)) / LN10));
|
|
|
|
} // end numDigits
|
|
|
|
private static final int numDigits(int min, int max)
|
|
{
|
|
return Math.max(numDigits(min),numDigits(max));
|
|
|
|
} // end numDigits
|
|
|
|
private static final int numDigits(Element elt) throws ConfigException
|
|
{
|
|
XMLLoader loader = XMLLoader.get();
|
|
DOMElementHelper h = new DOMElementHelper(elt);
|
|
int min, max;
|
|
if (h.hasAttribute("min"))
|
|
min = loader.configGetAttributeInt(elt,"min");
|
|
else
|
|
min = Integer.MIN_VALUE;
|
|
if (h.hasAttribute("max"))
|
|
max = loader.configGetAttributeInt(elt,"max");
|
|
else
|
|
max = Integer.MAX_VALUE;
|
|
return numDigits(min,max);
|
|
|
|
} // end numDigits
|
|
|
|
/*--------------------------------------------------------------------------------
|
|
* Overrides from class TextField
|
|
*--------------------------------------------------------------------------------
|
|
*/
|
|
|
|
protected void renderField(RequestOutput out) throws IOException
|
|
{
|
|
super.renderField(out);
|
|
out.write(" (" + min_value + " - " + max_value + ")");
|
|
|
|
} // end renderField
|
|
|
|
protected void validateContents(String value) throws ValidationException
|
|
{
|
|
super.validateContents(value);
|
|
try
|
|
{ // convert to an integer and check against range
|
|
int x = Integer.parseInt(value);
|
|
if ((min_value>Integer.MIN_VALUE) && (x<min_value))
|
|
throw new ValidationException("The value of the '" + getCaption()
|
|
+ "' field must be greater than or equal to " + min_value + ".");
|
|
if ((max_value<Integer.MAX_VALUE) && (x>max_value))
|
|
throw new ValidationException("The value of the '" + getCaption()
|
|
+ "' field must be less than or equal to " + max_value + ".");
|
|
|
|
} // end try
|
|
catch (NumberFormatException nfe)
|
|
{ // integer conversion failed
|
|
throw new ValidationException("Invalid non-numeric character in the '" + getCaption() + "' field.");
|
|
|
|
} // end catch
|
|
|
|
} // end validateContents
|
|
|
|
/*--------------------------------------------------------------------------------
|
|
* Implementations from interface DialogField
|
|
*--------------------------------------------------------------------------------
|
|
*/
|
|
|
|
public Object getValue()
|
|
{
|
|
try
|
|
{ // map the return value into an Integer
|
|
return new Integer(super.getValue().toString());
|
|
|
|
} // end try
|
|
catch (NumberFormatException nfe)
|
|
{ // we should have validated the input already...
|
|
throw new InternalStateError("IntegerField.getValue(): this was not supposed to happen!");
|
|
|
|
} // end catch
|
|
|
|
} // end getValue
|
|
|
|
public void setValue(Object o)
|
|
{
|
|
if (o==null)
|
|
{ // blank out the field
|
|
super.setValue(null);
|
|
return;
|
|
|
|
} // end if
|
|
|
|
int real_val;
|
|
if (o instanceof Number)
|
|
{ // we have a number!
|
|
Number n = (Number)o;
|
|
real_val = n.intValue();
|
|
|
|
} // end if
|
|
else
|
|
{ // parse the string equivalent
|
|
try
|
|
{ // get the integer equivalent
|
|
real_val = Integer.parseInt(o.toString());
|
|
|
|
} // end try
|
|
catch (NumberFormatException nfe)
|
|
{ // just use a sensible default
|
|
real_val = min_value;
|
|
|
|
} // end catch
|
|
|
|
} // end else
|
|
|
|
// Constrain the input value and set it.
|
|
if (real_val<min_value)
|
|
real_val = min_value;
|
|
else if (real_val>max_value)
|
|
real_val = max_value;
|
|
super.setValue(String.valueOf(real_val));
|
|
|
|
} // end setValue
|
|
|
|
public DialogField duplicate()
|
|
{
|
|
return new IntegerField(this);
|
|
|
|
} // end duplicate
|
|
|
|
} // end class IntegerField
|