/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.isis.viewer.dnd.form;
import java.util.List;
import org.apache.isis.applib.annotation.Where;
import org.apache.isis.core.commons.debug.DebugBuilder;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacetUtils;
import org.apache.isis.core.metamodel.spec.feature.Contributed;
import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
import org.apache.isis.core.metamodel.spec.feature.OneToOneAssociation;
import org.apache.isis.core.runtime.system.context.IsisContext;
import org.apache.isis.viewer.dnd.drawing.Canvas;
import org.apache.isis.viewer.dnd.drawing.ColorsAndFonts;
import org.apache.isis.viewer.dnd.drawing.Shape;
import org.apache.isis.viewer.dnd.icon.SubviewIconSpecification;
import org.apache.isis.viewer.dnd.list.InternalListSpecification;
import org.apache.isis.viewer.dnd.view.Axes;
import org.apache.isis.viewer.dnd.view.Click;
import org.apache.isis.viewer.dnd.view.Content;
import org.apache.isis.viewer.dnd.view.ObjectContent;
import org.apache.isis.viewer.dnd.view.SubviewDecorator;
import org.apache.isis.viewer.dnd.view.Toolkit;
import org.apache.isis.viewer.dnd.view.View;
import org.apache.isis.viewer.dnd.view.ViewAxis;
import org.apache.isis.viewer.dnd.view.ViewRequirement;
import org.apache.isis.viewer.dnd.view.ViewSpecification;
import org.apache.isis.viewer.dnd.view.base.AbstractBorder;
import org.apache.isis.viewer.dnd.view.collection.CollectionContent;
import org.apache.isis.viewer.dnd.view.collection.CollectionElement;
import org.apache.isis.viewer.dnd.view.content.FieldContent;
import org.apache.isis.viewer.dnd.view.field.OneToOneFieldImpl;
public class ExpandableViewBorder extends AbstractBorder {
public static final int CAN_OPEN = 1;
public static final int CANT_OPEN = 2;
public static final int UNKNOWN = 0;
public static class Factory implements SubviewDecorator {
private final ViewSpecification openObjectViewSpecification;
private final ViewSpecification closedViewSpecification;
private final ViewSpecification openCollectionViewSpecification;
public Factory() {
this.closedViewSpecification = new SubviewIconSpecification();
this.openObjectViewSpecification = new InternalFormSpecification();
this.openCollectionViewSpecification = new InternalListSpecification();
}
public Factory(final ViewSpecification closedViewSpecification, final ViewSpecification openObjectViewSpecification, final ViewSpecification openCollectionViewSpecification) {
this.closedViewSpecification = closedViewSpecification;
this.openObjectViewSpecification = openObjectViewSpecification;
this.openCollectionViewSpecification = openCollectionViewSpecification;
}
@Override
public ViewAxis createAxis(final Content content) {
return null;
}
@Override
public View decorate(final Axes axes, final View view) {
if (view.getContent().isObject()) {
return new ExpandableViewBorder(view, closedViewSpecification, openObjectViewSpecification);
} else if (view.getContent().isCollection()) {
return new ExpandableViewBorder(view, closedViewSpecification, openCollectionViewSpecification);
} else {
return view;
}
}
}
private boolean isOpen = false;
private final ViewSpecification openViewSpecification;
private final ViewSpecification closedViewSpecification;
private int canOpen;
// REVIEW: should provide this rendering context, rather than hardcoding.
// the net effect currently is that class members annotated with
// @Hidden(where=Where.ANYWHERE) or @Disabled(where=Where.ANYWHERE) will indeed
// be hidden/disabled, but will be visible/enabled (perhaps incorrectly)
// for any other value for Where
private final Where where = Where.ANYWHERE;
public ExpandableViewBorder(final View view, final ViewSpecification closedViewSpecification, final ViewSpecification openViewSpecification) {
super(view);
left = Toolkit.defaultFieldHeight();
this.openViewSpecification = openViewSpecification;
this.closedViewSpecification = closedViewSpecification;
canOpen();
}
@Override
protected void debugDetails(final DebugBuilder debug) {
super.debugDetails(debug);
debug.appendln("open spec", openViewSpecification);
debug.appendln("closed spec", closedViewSpecification);
debug.appendln("open", isOpen);
}
@Override
public void draw(final Canvas canvas) {
Shape pointer;
if (isOpen) {
pointer = new Shape(0, left / 2);
pointer.addPoint(left - 2 - 2, left / 2);
pointer.addPoint(left / 2 - 2, left - 2);
} else {
pointer = new Shape(2, 2);
pointer.addPoint(2, left - 2);
pointer.addPoint(left / 2, 2 + (left - 2) / 2);
}
if (canOpen == CAN_OPEN) {
canvas.drawSolidShape(pointer, Toolkit.getColor(ColorsAndFonts.COLOR_PRIMARY1));
} else if (canOpen == UNKNOWN) {
canvas.drawShape(pointer, Toolkit.getColor(ColorsAndFonts.COLOR_PRIMARY1));
} else {
canvas.drawShape(pointer, Toolkit.getColor(ColorsAndFonts.COLOR_SECONDARY3));
}
super.draw(canvas);
}
@Override
public void firstClick(final Click click) {
if (click.getLocation().getX() < left) {
if (canOpen == UNKNOWN) {
resolveContent();
markDamaged();
}
if (canOpen != CANT_OPEN) {
isOpen = !isOpen;
final View parent = wrappedView.getParent();
getViewManager().removeFromNotificationList(wrappedView);
if (isOpen) {
wrappedView = createOpenView();
} else {
wrappedView = createClosedView();
}
setView(this);
setParent(parent);
getParent().invalidateLayout();
canOpen();
}
} else {
super.firstClick(click);
}
}
private View createClosedView() {
return closedViewSpecification.createView(getContent(), getViewAxes(), -1);
}
private View createOpenView() {
return openViewSpecification.createView(getContent(), getViewAxes(), -1);
}
@Override
public void update(final ObjectAdapter object) {
super.update(object);
canOpen();
}
private void canOpen() {
final Content content = getContent();
if (content.isCollection()) {
canOpen = canOpenCollection(content);
} else if (content.isObject()) {
canOpen = canOpenObject(content);
}
}
private int canOpenCollection(final Content content) {
final ObjectAdapter collection = ((CollectionContent) content).getCollection();
if (collection.isGhost()) {
return UNKNOWN;
} else {
final CollectionFacet facet = CollectionFacetUtils.getCollectionFacetFromSpec(collection);
return facet.size(collection) > 0 ? CAN_OPEN : CANT_OPEN;
}
}
private int canOpenObject(final Content content) {
final ObjectAdapter object = ((ObjectContent) content).getObject();
if (object != null) {
final List<ObjectAssociation> fields = object.getSpecification().getAssociations(Contributed.EXCLUDED, ObjectAssociation.Filters.dynamicallyVisible(IsisContext.getAuthenticationSession(), object, where));
for (int i = 0; i < fields.size(); i++) {
if (fields.get(i).isOneToManyAssociation()) {
return CAN_OPEN;
} else if (fields.get(i).isOneToOneAssociation() && !fields.get(i).getSpecification().isParseable() && fieldContainsReference(object, fields.get(i))) {
return CAN_OPEN;
}
}
}
final boolean openForObjectsWithOutReferences = true;
return openForObjectsWithOutReferences ? CAN_OPEN : CANT_OPEN;
}
private boolean fieldContainsReference(final ObjectAdapter parent, final ObjectAssociation field) {
final OneToOneAssociation association = (OneToOneAssociation) field;
final OneToOneFieldImpl fieldContent = new OneToOneFieldImpl(parent, field.get(parent), association);
if (openViewSpecification.canDisplay(new ViewRequirement(fieldContent, ViewRequirement.OPEN))) {
return true;
}
return false;
}
private void resolveContent() {
ObjectAdapter parent = getParent().getContent().getAdapter();
if (!(parent instanceof ObjectAdapter)) {
parent = getParent().getParent().getContent().getAdapter();
}
if (getContent() instanceof FieldContent) {
final ObjectAssociation field = ((FieldContent) getContent()).getField();
IsisContext.getPersistenceSession().resolveField(parent, field);
} else if (getContent() instanceof CollectionContent) {
IsisContext.getPersistenceSession().resolveImmediately(parent);
} else if (getContent() instanceof CollectionElement) {
IsisContext.getPersistenceSession().resolveImmediately(getContent().getAdapter());
}
}
}