Package net.datacrow.console.components.lists.elements

Source Code of net.datacrow.console.components.lists.elements.DcObjectListElement

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*                             <-< <  \\//  > >->                             *
*                               <-<-\ __ /->->                               *
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*                              info@datacrow.net                             *
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*                       This file is part of Data Crow.                      *
*       Data Crow is free software; you can redistribute it and/or           *
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package net.datacrow.console.components.lists.elements;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.util.ArrayList;
import java.util.Collection;

import javax.swing.JPanel;

import net.datacrow.console.components.DcLabel;
import net.datacrow.core.DcRepository;
import net.datacrow.core.data.DataManager;
import net.datacrow.core.modules.DcModule;
import net.datacrow.core.modules.DcModules;
import net.datacrow.core.objects.DcObject;
import net.datacrow.core.objects.Picture;
import net.datacrow.settings.DcSettings;
import net.datacrow.settings.Settings;

/**
* A list element which is capable of displaying a DcObject.
*
* @author Robert Jan van der Waals
*/
public abstract class DcObjectListElement extends DcListElement {

    private static final FlowLayout layout = new FlowLayout(FlowLayout.LEFT, 0, 0);
    protected static final int fieldHeight = 21;
    protected String key;
    protected int module;
    protected DcObject dco;
   
    public DcObjectListElement(int module) {
        this.module = module;
    }
   
    public int getModule() {
      return module;
    }
   
    public void setKey(String key) {
        this.key = key;
    }
   
    public String getKey() {
        return key;
    }
   
    public void setDcObject(DcObject dco) {
        this.dco = dco;
        this.key = dco.getID();
       
        // when adding an existing item the renderer will take care of the loading/
        // for new items, the component needs to be fully build.
        if (dco.isNew()) build();
    }

    public DcObject getDcObject() {
        dco = dco == null ? DataManager.getItem(module, key) : dco;
        if (dco != null) dco.markAsUnchanged();
        return dco;
    }
   
    public abstract Collection<Picture> getPictures();
   
    private boolean loading = false;
   
    public int[] getFields() {
      DcModule module = DcModules.get(getModule());
      return module.isAbstract() ? new int[] {DcObject._ID} : module.getMinimalFields(getFields(getModule()));
    }
   
    public boolean load() {
        int count = getComponentCount();
        if (count == 0 && !loading) {
            DcModule module = DcModules.get(getModule());
           
            if (dco == null) {
                dco = DataManager.getItem(getModule(), key, getFields());
                //this.module = dco.getModule().getIndex();
                if (module.isAbstract())
                    dco.reload();
            }

            loading = true;
            build();
            loading = false;
            return true;
        }

        return false;
    }
   
    private Collection<Integer> getFields(int module) {
        Settings settings = DcModules.get(module).getSettings();
        Collection<Integer> fields = new ArrayList<Integer>();
        for (int field : settings.getIntArray(DcRepository.ModuleSettings.stCardViewItemDescription))
            fields.add(Integer.valueOf(field));

        for (int field : settings.getIntArray(DcRepository.ModuleSettings.stCardViewPictureOrder))
            fields.add(Integer.valueOf(field));
       
        return fields;
    }
   
    public void update(DcObject dco) {
        this.dco = dco;
        clear();
        build();
    }   
   
    @Override
    public void setForeground(Color fg) {
      for (Component c : getComponents()) {
        c.setForeground(fg);
      }
    }
   
    public JPanel getPanel() {
        JPanel panel = new JPanel();
        panel.setLayout(layout);
        return panel;
    }
   
    protected DcLabel getLabel(int field, boolean label, int width) {
        DcLabel lbl = new DcLabel();
        if (label) {
            lbl.setFont(DcSettings.getFont(DcRepository.Settings.stSystemFontBold));
            lbl.setText(dco.getLabel(field));
        } else {
            lbl.setFont(DcSettings.getFont(DcRepository.Settings.stSystemFontNormal));
            lbl.setText(dco.getDisplayString(field));
        }
       
        lbl.setPreferredSize(new Dimension(width, fieldHeight));
       
        return lbl;
    }      
   
    @Override
    public void setBackground(Color color) {
        super.setBackground(color);
        for (int i = 0; i < getComponents().length; i++) {
            getComponents()[i].setBackground(color);
        }
    }
   
    @Override
    public void clear() {
        // DO NOT DESTROY THE COMPONENTS. This component is re-used!
        // DO NOT ENABLE THIS: super.clear();
       
        removeAll();
       
        if (dco != null && !dco.isNew()) {
            dco.release();
            dco = null;
        }
           
        revalidate();
        repaint();
    }
   
  @Override
  protected void finalize() throws Throwable {
    super.finalize();
        dco = null;
        key = null;
  }
}
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