Symantec Visual Cafe for Java 2.5/symantec-visual-cafe-2.5-database-dev-edition.iso/Visual Cafe Pro v1.0/TUTORIAL.BIN/TextArea.class

Java Class File | 1997-01-30 | 5.8 KB | 189 lines

package symantec.itools.db.awt;

import java.awt.Event;
import java.awt.TextComponent;
import java.io.IOException;
import symantec.itools.db.pro.ProjBinder;
import symantec.itools.db.pro.ProjLink;
import symantec.itools.db.pro.RelationView;
import symantec.itools.db.pro.RelationViewMetaData;
import symjava.sql.SQLException;

public class TextArea extends java.awt.TextArea implements ProjLink {
   private ProjBinder m_ProjBinder;
   private boolean m_DynamicUpdate = false;
   private boolean m_DynamicUpdateOverride = true;
   private boolean m_BinderDetermines = true;
   private String m_BinderData = new String();
   private String m_ScreenData = new String();
   private int m_treatBlankAs;

   public TextArea() {
   }

   public TextArea(int rows, int cols) {
      super(rows, cols);
   }

   public TextArea(String text) {
      super(text);
   }

   public TextArea(String text, int rows, int cols) {
      super(text, rows, cols);
   }

   public void init(ProjBinder binder) {
      this.m_ProjBinder = binder;
      this.setEditable(this.m_ProjBinder);
   }

   public void setTreatBlankAs(String blank) {
      if ((new String(blank)).toUpperCase().equals("DEFAULT")) {
         this.m_treatBlankAs = 0;
      } else if ((new String(blank)).toUpperCase().equals("NULL")) {
         this.m_treatBlankAs = 1;
      } else {
         if ((new String(blank)).toUpperCase().equals("EMPTY")) {
            this.m_treatBlankAs = 2;
         }

      }
   }

   public void setBinding(RelationView relView, String projection) {
      int projectionNumber = 0;
      int columnType = 0;

      try {
         RelationViewMetaData rvmd = relView.getMetaData();
         projectionNumber = relView.findProjByName(projection);
         columnType = rvmd.getColumnType(projectionNumber);
         if (columnType == 91 || columnType == 92 || columnType == 93) {
            this.m_DynamicUpdateOverride = false;
         }

         relView.bindProj(projectionNumber, this);
      } catch (SQLException Ex) {
         this.raiseException("SQLException from setBinding: " + ((Throwable)Ex).getMessage());
      }
   }

   public void setDynamicUpdate(boolean update) {
      this.m_DynamicUpdate = update;
   }

   public void notifyDataChange(ProjBinder binder) {
      if (binder != null) {
         this.m_ProjBinder = binder;

         try {
            if (binder.getRelationView().getCurrentRecordState() != 105) {
               if (binder.isReadable() && !binder.isNull()) {
                  this.m_BinderData = binder.getStringValue();
               } else {
                  this.m_BinderData = "";
               }
            } else {
               this.m_BinderData = "";
            }
         } catch (SQLException Ex) {
            this.raiseException("SQLException from TextArea.notifyDataChange: " + ((Throwable)Ex).getMessage());
         } catch (IOException Ex) {
            this.raiseException("IOException from TextArea.notifyDataChange: " + ((Throwable)Ex).getMessage());
         }

         if (this.m_BinderData == null) {
            this.m_BinderData = new String();
         }

         this.m_ScreenData = ((TextComponent)this).getText();
         if (!this.m_BinderData.equals(this.m_ScreenData)) {
            this.m_ScreenData = this.m_BinderData;
            ((TextComponent)this).setText(this.m_ScreenData);
         }

         if (this.m_BinderDetermines) {
            this.setEditable(this.m_ProjBinder);
         }

      }
   }

   public boolean lostFocus(Event evt, Object what) {
      try {
         this.notifySetData(this.m_ProjBinder);
      } catch (SQLException Ex) {
         this.raiseException("SQLException from TextArea.notifySetData: " + ((Throwable)Ex).getMessage());
      }

      return super.lostFocus(evt, what);
   }

   boolean notifyInputChanged(String input) {
      if (!this.m_ScreenData.equals(input)) {
         this.m_ScreenData = input;
      }

      if (!this.m_BinderData.equals(this.m_ScreenData)) {
         this.m_BinderData = this.m_ScreenData;

         try {
            if (this.m_ProjBinder != null && this.m_ProjBinder.isWritable()) {
               this.m_ProjBinder.setValueFromString(this.m_ScreenData, 0, this.m_treatBlankAs);
            }
         } catch (SQLException Ex) {
            this.raiseException("SQLException from TextArea.notifyInputChange.setString: " + ((Throwable)Ex).getMessage());
            return false;
         } catch (IOException Ex) {
            this.raiseException("IOException from TextArea.notifyInputChange.setString: " + ((Throwable)Ex).getMessage());
            return false;
         }
      }

      return true;
   }

   public boolean notifySetData(ProjBinder binder) throws SQLException {
      return this.notifyInputChanged(((TextComponent)this).getText());
   }

   public boolean handleEvent(Event evt) {
      if (this.m_DynamicUpdate && this.m_DynamicUpdateOverride) {
         try {
            this.notifySetData(this.m_ProjBinder);
         } catch (SQLException Ex) {
            this.raiseException("SQLException from TextArea.notifySetData: " + ((Throwable)Ex).getMessage());
         }
      }

      return super.handleEvent(evt);
   }

   void setEditable(ProjBinder binder) {
      boolean isWritable = false;

      try {
         if (binder != null) {
            RelationView rv = binder.getRelationView();
            if (rv != null && rv.getCurrentRecordState() != 105) {
               isWritable = binder.isWritable();
            }
         }
      } catch (SQLException Ex) {
         this.raiseException("SQLException from setEditable: " + ((Throwable)Ex).getMessage());
      }

      super.setEditable(isWritable);
   }

   public void setEditable(boolean value) {
      this.m_BinderDetermines = value;
      super.setEditable(value);
   }

   void raiseException(String text) {
      System.out.println(text);
   }
}