118 lines
3.1 KiB
Java
118 lines
3.1 KiB
Java
//This file is part of SECONDO.
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//Copyright (C) 2004, University in Hagen, Department of Computer Science,
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//Database Systems for New Applications.
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//SECONDO is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//SECONDO is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//You should have received a copy of the GNU General Public License
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//along with SECONDO; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package viewer.hoese.algebras;
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import sj.lang.ListExpr;
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import viewer.*;
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import viewer.hoese.*;
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/**
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* A displayclass for the int-type, alphanumeric only
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*/
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public class Dsplint extends DsplGeneric implements RenderAttribute, LabelAttribute {
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/** the value of this integer **/
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int value;
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/** the text to display **/
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String entry;
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/** flag for defined state **/
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boolean defined;
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/** scans value and sets all internal variables **/
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private boolean scanValue(ListExpr value){
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if(isUndefined(value)){
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defined=false;
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this.value = 0;
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return true;
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} else {
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int at = value.atomType();
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if(at!=ListExpr.INT_ATOM){
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defined = false;
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this.value = 0;
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return false;
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}else{
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defined = true;
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this.value = value.intValue();
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return true;
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}
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}
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}
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/** scans the value, sets all internal variables and produces the
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* string of the value
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**/
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private String getString(ListExpr value){
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if(!scanValue(value)){
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return "<error>";
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} else if(defined){
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return ""+(this.value);
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} else{
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return "undefined";
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}
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}
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/**
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* This method is used to analyse the type and value in NestedList format and build
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* up the intern datastructures for this type. An alphanumeric representation is
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* neccessary for the displaying this type in the queryresultlist.
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*/
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public void init (String name, int nameWidth, int indent, ListExpr type, ListExpr value, QueryResult qr) {
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entry = extendString(name,nameWidth, indent) +" : "+ getString(value);
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qr.addEntry(this);
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return;
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}
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public String toString(){
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return entry;
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}
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/** returns the maximum value **/
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public double getMaxRenderValue(){
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return value;
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}
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/** returns the minimum value **/
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public double getMinRenderValue(){
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return value;
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}
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/** returns the current value **/
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public double getRenderValue(double time){
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return value;
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}
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/** returns true if this int is defined **/
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public boolean mayBeDefined(){
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return defined;
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}
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/** returns tre if this integer is defined **/
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public boolean isDefined(double time){
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return defined;
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}
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/** returns the label **/
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public String getLabel(double time){
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return defined?""+value:"undefined";
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}
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}
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