source: other-projects/trunk/realistic-books/packages/AntInstaller/src/org/tp23/antinstaller/renderer/swing/SimpleInputPageRenderer.java@ 19253

/* 
 * Copyright 2005 Paul Hinds
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.tp23.antinstaller.renderer.swing;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.util.ArrayList;

import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import org.tp23.antinstaller.ValidationException;
import org.tp23.antinstaller.input.CommentOutput;
import org.tp23.antinstaller.input.OutputField;
import org.tp23.antinstaller.page.SimpleInputPage;
import org.tp23.antinstaller.renderer.RendererFactory;
import org.tp23.gui.GBCF;

/**
 *
 * <p>This PageRenderer just renders a list of SwingInputRenderers using
* a BoxLayout </p>
 * <p> </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: tp23</p>
 * @author Paul Hinds
 * @version $Id: SimpleInputPageRenderer.java,v 1.6 2006/12/27 21:46:35 teknopaul Exp $
 */
public class SimpleInputPageRenderer
    extends SwingPageRenderer {

     //Prevent displayText and explanatoryText being rendered using different fonts
    private static final Font defaultFont = new JLabel().getFont();

    private JPanel contentPanel = new JPanel();
    
    private GridBagLayout gridLayout = new GridBagLayout();
    private GBCF cf = new GBCF(); // GridBagConstraintsFactory
    private boolean overflow = false;
    // used in overflow
    JScrollPane scroller = null;
    

    private ArrayList renderers = new ArrayList();

    public SimpleInputPageRenderer(){
    }
        
    public boolean validateFields() throws ValidationException {
        OutputField[] fields = page.getOutputField();
        for (int i = 0; i < fields.length; i++) {
            if(!fields[i].validate(ctx)){
                SwingOutputFieldRenderer renderer = (SwingOutputFieldRenderer)renderers.get(i);
                renderer.renderError();
                return false;
            }
        }
        return true;
    }
    public void updateInputFields(){
        for (int i = 0; i < renderers.size(); i++) {
            ((SwingOutputFieldRenderer)renderers.get(i)).updateInputField();
        }
    }

    public void updateDefaultValues(){
        for (int i = 0; i < renderers.size(); i++) {
            ((SwingOutputFieldRenderer)renderers.get(i)).updateDefaultValue();
        }
    }

    public void instanceInit() throws Exception {
        overflow = ((SimpleInputPage)page).isOverflow();
        if(overflow){
            //WARNING this causes flickering in the UI 
            contentPanel.setMaximumSize(new Dimension(SizeConstants.PAGE_WIDTH - 50, SizeConstants.PAGE_HEIGHT));
            scroller = new JScrollPane();
            scroller.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            scroller.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
            scroller.setBorder(BorderFactory.createCompoundBorder(
                            BorderFactory.createEmptyBorder(4,4,4,4),
                            BorderFactory.createEtchedBorder()              
                            ));
            add(scroller, BorderLayout.CENTER);
            scroller.getViewport().add(contentPanel);
            //contentPanel.setBackground(Color.red);
        }
        else {
            this.add(contentPanel, BorderLayout.CENTER);
            contentPanel.setBorder(BorderFactory.createEmptyBorder(SizeConstants.TOP_INDENT, 4, 4, 4));
        }

        OutputField[] fields = page.getOutputField();
        contentPanel.setDoubleBuffered(true);
        contentPanel.setLayout(gridLayout);
        int row = 0;
        for (int i = 0; i < fields.length; i++) {
            SwingOutputFieldRenderer renderer = RendererFactory.getSwingRenderer(fields[i]);
            String text = fields[i].getExplanatoryText();
            if(fields[i].getExplanatoryText() != null){
                JTextArea area = new DisplayTextArea(contentPanel.getBackground(), contentPanel.getForeground());
                area.setIgnoreRepaint(true);
                area.setFont( defaultFont );
                area.setText(text);
                contentPanel.add(area, cf.getSpan(row++));
                if(fields[i] instanceof CommentOutput){
                    CommentOutputRenderer crenderer = (CommentOutputRenderer)renderer;
                    crenderer.setExplanatoryTextField(area);
                    if(fields[i].getDisplayText() == null){
                        continue;
                    }
                }
            }
            renderer.setOutputField(fields[i]);
            renderer.setInstallerContext(ctx);
            renderer.initComponent(contentPanel);
            row = renderer.addSelf(contentPanel, cf, row, overflow);
            renderers.add(renderer);
        }
        contentPanel.add(new JPanel(), cf.getVertGlue(row++));
    }
}
/**
 * A JTextArea that is not editable and looks like a JLabel but uses 
 * JTextAreas ability to wrap.  Also has a fixed prefered width; 
 * @author Paul Hinds
 * @version $Id: SimpleInputPageRenderer.java,v 1.6 2006/12/27 21:46:35 teknopaul Exp $
 */
class DisplayTextArea extends JTextArea{
    DisplayTextArea(Color back, Color fore){
        super();
        this.setBackground(back);
        this.setForeground(fore);
        this.setLineWrap(true);
        this.setWrapStyleWord(true);
        this.setEditable(false);
        this.setSelectionColor(back);
        this.setSelectionColor(back);
        this.setMargin(new Insets(5,0,0,0));
    }

    public Dimension getPreferredSize(){
        Dimension pref = super.getPreferredSize();
        return new Dimension(SizeConstants.PAGE_WIDTH - 40, pref.height);
    }
    public Dimension getMinimumSize(){
        Dimension pref = super.getMinimumSize();
        return new Dimension(SizeConstants.PAGE_WIDTH - 40, pref.height);
    }
}