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

Java Class File | 1997-01-30 | 5.6 KB | 232 lines

package symantec.itools.db.awt;

import java.awt.Button;
import java.awt.Event;
import java.awt.TextComponent;
import java.awt.TextField;

public class DefaultTvEventHandler implements TvEventHandler {
   Grid grid;
   int rowSelectionBase = -1;

   public void setupView(Grid v) {
      this.grid = v;
   }

   public boolean handleCellEvent(Event e, TableCell cell) {
      if (e.id != 59 && e.id != 56) {
         this.grid.clearAllSelections();
         return true;
      } else {
         return true;
      }
   }

   public boolean handleColHeadingEvent(Event e, TableCell cell) {
      return true;
   }

   public boolean handleRowHeadingEvent(Event e, TableCell cell) {
      if (e.id == 51) {
         boolean leftPressed = (e.modifiers & 8 & 4) == 0;
         if (e.shiftDown() && leftPressed) {
            if (this.grid.isSelectionBaseSet()) {
               this.grid.selectRange(cell.row() + 1, 0);
            } else {
               this.grid.setSelectionBase(cell.row() + 1, 0);
               this.grid.selectRange(cell.row() + 1, 0);
            }
         } else if (e.controlDown() && leftPressed) {
            if (!this.grid.isRangeSelected()) {
               this.grid.setSelectionBase(cell.row() + 1, 0);
            }

            this.grid.toggleRow(cell.row() + 1);
         } else if (leftPressed) {
            boolean set = this.grid.isRowSet(cell.row() + 1);
            this.grid.clearAllSelections();
            this.grid.setSelectionBase(cell.row() + 1, 0);
            this.grid.setRow(cell.row() + 1, !set);
         }
      }

      return true;
   }

   public boolean handleCornerCellEvent(Event e, TableCell cell) {
      return true;
   }

   public boolean handleToolbarEvent(Event e) {
      if (e.target instanceof TextField && e.id == 1001) {
         TextField go = (TextField)e.target;

         try {
            String rowText = ((TextComponent)go).getText();
            if (rowText.equals("")) {
               return true;
            }

            int row = Integer.parseInt(rowText);
            this.grid.gotoRow(row);
         } catch (NumberFormatException ex) {
            this.handleException((Coordinate)null, ex);
         }
      }

      if (e.target instanceof Button && (!(e.target instanceof Button) || e.id == 1001)) {
         Button button = (Button)e.target;
         String label = button.getLabel();
         if (label.equals(Grid.gotoRowLabel)) {
            try {
               String rowText = (String)e.arg;
               if (rowText.equals("")) {
                  return true;
               }

               int row = Integer.parseInt(rowText);
               this.grid.gotoRow(row);
            } catch (NumberFormatException ex) {
               this.handleException((Coordinate)null, ex);
            }
         } else {
            if (label.equals(Grid.appendRowLabel)) {
               try {
                  this.grid.appendRow();
               } catch (TypeNotSupported ex) {
                  this.handleException((Coordinate)null, ex);
               }

               return true;
            }

            if (label.equals(Grid.deleteRowLabel)) {
               int[] rows = this.grid.getSelectedRows();
               boolean auto = this.grid.getAutoRedraw();
               this.grid.setAutoRedraw(false);

               try {
                  if (rows.length == 0) {
                     Coordinate c = this.grid.getCurrentCellCoordinates();
                     if (c != null) {
                        this.grid.deleteRow(c.row());
                        this.grid.redraw(true);
                     }
                  } else {
                     for(int i = rows.length - 1; i >= 0; --i) {
                        this.grid.deleteRow(rows[i]);
                     }
                  }
               } catch (TypeNotSupported ex) {
                  this.handleException((Coordinate)null, ex);
               }

               this.grid.setAutoRedraw(auto);
               this.grid.clearAllSelections();
               return true;
            }

            if (label.equals(Grid.insertRowLabel)) {
               int row = this.grid.getFirstSelectedRow();

               try {
                  if (row != -1) {
                     this.grid.insertRow(row);
                  } else {
                     Coordinate c = this.grid.getCurrentCellCoordinates();
                     if (c != null) {
                        this.grid.insertRow(c.row());
                        this.grid.redraw(true);
                     }
                  }
               } catch (TypeNotSupported ex) {
                  this.handleException((Coordinate)null, ex);
               }

               this.grid.clearAllSelections();
               return true;
            }

            if (label.equals(Grid.saveLabel)) {
               try {
                  this.grid.save();
               } catch (TypeNotSupported ex) {
                  this.handleException((Coordinate)null, ex);
               }

               return true;
            }

            if (label.equals(Grid.restartLabel)) {
               this.grid.restart();
               return true;
            }

            if (label.equals(Grid.undoRowLabel)) {
               int[] rows = this.grid.getSelectedRows();
               boolean auto = this.grid.getAutoRedraw();
               this.grid.setAutoRedraw(false);

               try {
                  if (rows.length == 0) {
                     Coordinate c = this.grid.getCurrentCellCoordinates();
                     if (c != null) {
                        this.grid.undoRow(c.row());
                        this.grid.redraw(true);
                     }
                  } else {
                     for(int i = rows.length - 1; i >= 0; --i) {
                        this.grid.undoRow(rows[i]);
                     }
                  }
               } catch (TypeNotSupported ex) {
                  this.handleException((Coordinate)null, ex);
               }

               this.grid.setAutoRedraw(auto);
               this.grid.clearAllSelections();
               return true;
            }

            if (label.equals(Grid.undeleteRowLabel)) {
               int[] rows = this.grid.getSelectedRows();
               boolean auto = this.grid.getAutoRedraw();
               this.grid.setAutoRedraw(false);

               try {
                  if (rows.length == 0) {
                     Coordinate c = this.grid.getCurrentCellCoordinates();
                     if (c != null) {
                        this.grid.undeleteRow(c.row());
                        this.grid.redraw(true);
                     }
                  } else {
                     for(int i = rows.length - 1; i >= 0; --i) {
                        this.grid.undeleteRow(rows[i]);
                     }
                  }
               } catch (TypeNotSupported ex) {
                  this.handleException((Coordinate)null, ex);
               }

               this.grid.setAutoRedraw(auto);
               this.grid.clearAllSelections();
               return true;
            }
         }

         return true;
      } else {
         return false;
      }
   }

   public void handleException(Coordinate pos, Exception exc) {
      if (pos != null) {
         System.out.println("GRID: Error occurred at row=" + pos.row() + " col=" + pos.col());
      }

      ((Throwable)exc).printStackTrace();
   }
}