99 lines
3.2 KiB
Java
99 lines
3.2 KiB
Java
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//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.update2.gui;
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import java.awt.Dimension;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import javax.swing.JPanel;
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import javax.swing.Scrollable;
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import java.util.ArrayList;
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import java.util.List;
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import viewer.update2.*;
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import viewer.update2.format.*;
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/**
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* Panel that displays a formatted document.
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*
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*/
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public abstract class DocumentPanel extends JPanel implements Scrollable
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{
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protected RelationPosition currentPosition;
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protected DocumentFormatter formatter;
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public DocumentPanel()
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{
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super();
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this.currentPosition = null;
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this.setSize(new Dimension(800,600));
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}
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/**
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* Returns formatter of class '<pFormatType>Formatter' if that class exists in package viewer.update2.format.
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*/
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public static DocumentPanel createDocumentPanel(DocumentFormatter pFormatter) throws Exception
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{
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// try to instatiate specific formatter class
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Class panelClass = Class.forName("viewer.update2.gui." + pFormatter.getType() + "DocumentPanel");
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Object o = panelClass.newInstance();
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if(!(o instanceof DocumentPanel))
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{
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throw new Exception("Found class does not extend the abstract class DocumentPanel. ");
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}
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DocumentPanel panel = (DocumentPanel)o;
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panel.formatter = pFormatter;
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return panel;
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}
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/**
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* Returns current position in formatted document:
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* relation name, attribute name, tuple id, position within value.
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* This information is read from the hidden markup in the document.
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*/
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public RelationPosition getCurrentRelationPosition() { return this.currentPosition; }
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/**
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* Scrolls the Document to the specified position.
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*/
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public abstract void goTo(RelationPosition pRelationPosition);
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/**
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* Displays pages sequentially in appropriate Components.
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*/
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public abstract void load(List<Object> pOutputPages);
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/**
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* Determines the RelationPosition from the mouse position in the specified component.
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*/
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public abstract RelationPosition trackPosition(Point pMousePosition, Object pComponent);
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// Methods of Interface Scrollable
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public Dimension getPreferredScrollableViewportSize() { return getPreferredSize(); }
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public int getScrollableBlockIncrement(Rectangle arg0, int arg1, int arg2) { return 50; }
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public boolean getScrollableTracksViewportHeight() { return false; }
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public boolean getScrollableTracksViewportWidth() { return true; }
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public int getScrollableUnitIncrement(Rectangle arg0, int arg1, int arg2) { return 10; }
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}
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