Package org.apache.cayenne.modeler.editor.dbentity

Source Code of org.apache.cayenne.modeler.editor.dbentity.DbEntityTabbedView

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package org.apache.cayenne.modeler.editor.dbentity;

import java.awt.Component;

import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.apache.cayenne.map.Attribute;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DbEntity;
import org.apache.cayenne.map.DbRelationship;
import org.apache.cayenne.map.Entity;
import org.apache.cayenne.map.Relationship;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.modeler.action.ActionManager;
import org.apache.cayenne.modeler.action.RemoveAttributeAction;
import org.apache.cayenne.modeler.action.RemoveRelationshipAction;
import org.apache.cayenne.modeler.editor.ExistingSelectionProcessor;
import org.apache.cayenne.modeler.event.AttributeDisplayEvent;
import org.apache.cayenne.modeler.event.DbAttributeDisplayListener;
import org.apache.cayenne.modeler.event.DbEntityDisplayListener;
import org.apache.cayenne.modeler.event.DbRelationshipDisplayListener;
import org.apache.cayenne.modeler.event.EntityDisplayEvent;
import org.apache.cayenne.modeler.event.RelationshipDisplayEvent;

public class DbEntityTabbedView extends JTabbedPane implements ChangeListener,
        DbEntityDisplayListener, DbRelationshipDisplayListener,
        DbAttributeDisplayListener {

    protected ProjectController projectController;

    protected Component entityPanel;
    protected DbEntityAttributeTab attributesPanel;
    protected DbEntityRelationshipTab relationshipsPanel;

    public DbEntityTabbedView(ProjectController projectController) {
        super();
        this.projectController = projectController;
        projectController.addDbEntityDisplayListener(this);
        projectController.addDbAttributeDisplayListener(this);
        projectController.addDbRelationshipDisplayListener(this);

        setTabPlacement(JTabbedPane.TOP);

        // add panels to tabs
        // note that those panels that have no internal scrollable tables
        // must be wrapped in a scroll pane

        entityPanel = new JScrollPane(new DbEntityTab(projectController));
        addTab("Entity", entityPanel);
        attributesPanel = new DbEntityAttributeTab(projectController);
        addTab("Attributes", attributesPanel);
        relationshipsPanel = new DbEntityRelationshipTab(projectController);
        addTab("Relationships", relationshipsPanel);

        addChangeListener(this);
    }

    /** Reset the remove buttons */
    private void resetRemoveButtons() {
        ActionManager actionManager = Application.getInstance().getActionManager();

        actionManager.getAction(RemoveAttributeAction.class).setEnabled(false);
        actionManager.getAction(RemoveRelationshipAction.class).setEnabled(false);
    }

    /** Handle focus when tab changes. */
    public void stateChanged(ChangeEvent e) {
        resetRemoveButtons();

        projectController.setEntityTabSelection(getSelectedIndex());

        // find source view
        Component selected = getSelectedComponent();
        while (selected instanceof JScrollPane) {
            selected = ((JScrollPane) selected).getViewport().getView();
        }

        ExistingSelectionProcessor proc = (ExistingSelectionProcessor) selected;
        proc.processExistingSelection(e);
    }

    /** If entity is null hides it's contents, otherwise makes it visible. */
    public void currentDbEntityChanged(EntityDisplayEvent e) {
        Entity entity = e.getEntity();
        if (e.isMainTabFocus() && entity instanceof DbEntity) {
            if (getSelectedComponent() != entityPanel) {
                setSelectedComponent(entityPanel);
                entityPanel.setVisible(true);
            }
        }

        resetRemoveButtons();
        setVisible(e.getEntity() != null);

        if (projectController.getEntityTabSelection() < getTabCount()) {
            setSelectedIndex(projectController.getEntityTabSelection());
        }
    }

    public void currentDbRelationshipChanged(RelationshipDisplayEvent e) {
        if (e.getEntity() == null) {
            return;
        }

        // update relationship selection
        Relationship[] rels = e.getRelationships();
        DbRelationship[] dbRels = new DbRelationship[rels.length];

        System.arraycopy(rels, 0, dbRels, 0, rels.length);

        // reset tab to relationship
        if (getSelectedComponent() != relationshipsPanel && dbRels.length > 0) {
            setSelectedComponent(relationshipsPanel);
            relationshipsPanel.setVisible(true);
        }

        relationshipsPanel.selectRelationships(dbRels);
    }

    public void currentDbAttributeChanged(AttributeDisplayEvent e) {
        if (e.getEntity() == null)
            return;

        // update relationship selection
        Attribute[] attrs = e.getAttributes();
        DbAttribute[] dbAttrs = new DbAttribute[attrs.length];

        System.arraycopy(attrs, 0, dbAttrs, 0, attrs.length);

        if (getSelectedComponent() != attributesPanel && dbAttrs.length > 0) {
            setSelectedComponent(attributesPanel);
            attributesPanel.setVisible(true);
        }

        attributesPanel.selectAttributes(dbAttrs);
    }
}
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