/*
* Copyright 2017 Red Hat, Inc. and/or its affiliates.
*
* 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.kie.workbench.common.stunner.client.widgets.presenters.session.impl;
import org.kie.workbench.common.stunner.client.widgets.presenters.diagram.DiagramViewer;
import org.kie.workbench.common.stunner.client.widgets.presenters.diagram.impl.AbstractDiagramViewer;
import org.kie.workbench.common.stunner.client.widgets.presenters.session.SessionDiagramViewer;
import org.kie.workbench.common.stunner.client.widgets.views.WidgetWrapperView;
import org.kie.workbench.common.stunner.core.client.canvas.AbstractCanvas;
import org.kie.workbench.common.stunner.core.client.canvas.AbstractCanvasHandler;
import org.kie.workbench.common.stunner.core.client.canvas.controls.select.SelectionControl;
import org.kie.workbench.common.stunner.core.client.canvas.controls.zoom.ZoomControl;
import org.kie.workbench.common.stunner.core.client.command.CanvasCommandManager;
import org.kie.workbench.common.stunner.core.client.session.impl.AbstractClientReadOnlySession;
import org.kie.workbench.common.stunner.core.diagram.Diagram;
/**
* A generic session's viewer instance.
* It aggregates a custom diagram viewer type which provides binds the viewer's diagram instance
* to be displayed with the one for the given session.
*/
public class SessionViewerImpl<S extends AbstractClientReadOnlySession, H extends AbstractCanvasHandler>
extends AbstractSessionViewer<S, H>
implements SessionDiagramViewer<S, H> {
private final AbstractDiagramViewer<Diagram, H> diagramViewer;
private final CanvasCommandManager<H> canvasCommandManager;
SessionViewerImpl(final CanvasCommandManager<H> canvasCommandManager,
final WidgetWrapperView view) {
this.diagramViewer = new SessionDiagramViewer(view);
this.canvasCommandManager = canvasCommandManager;
}
@Override
protected CanvasCommandManager<H> getCommandManager() {
return canvasCommandManager;
}
@Override
protected DiagramViewer<Diagram, H> getDiagramViewer() {
return diagramViewer;
}
@Override
protected Diagram getDiagram() {
return null != getSessionHandler() ? getSessionHandler().getDiagram() : null;
}
@Override
@SuppressWarnings("unchecked")
public ZoomControl<AbstractCanvas> getZoomControl() {
return getSession().getZoomControl();
}
private S getSession() {
return getInstance();
}
/**
* The internal diagram viewer custom type that binds the diagram(handler to be presented to
* the one for the current active sessino.
*/
private class SessionDiagramViewer
extends AbstractDiagramViewer<Diagram, H> {
public SessionDiagramViewer(final WidgetWrapperView view) {
super(view);
}
@Override
public void open(final Diagram item,
final int width,
final int height,
final DiagramViewer.DiagramViewerCallback<Diagram> callback) {
open(item,
width,
height,
false,
callback);
}
@Override
protected void scalePanel(final int width,
final int height) {
scale(width,
height);
}
@Override
protected void enableControls() {
// The control lifecycle for this diagram editor instance are handled by the session itself.
}
@Override
protected void disableControls() {
// The control lifecycle for this diagram editor instance are handled by the session itself.
}
@Override
protected void destroyControls() {
// The control lifecycle for this diagram editor instance are handled by the session itself.
}
@Override
protected AbstractCanvas getCanvas() {
return getSession().getCanvas();
}
@Override
@SuppressWarnings("unchecked")
public H getHandler() {
return (H) getSession().getCanvasHandler();
}
@Override
@SuppressWarnings("unchecked")
public ZoomControl<AbstractCanvas> getZoomControl() {
return getSession().getZoomControl();
}
@Override
@SuppressWarnings("unchecked")
public SelectionControl<H, ?> getSelectionControl() {
return (SelectionControl<H, ?>) getSession().getSelectionControl();
}
}
}