X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.views.swt%2Fsrc%2Forg%2Fsimantics%2Fviews%2Fswt%2FModelledView.java;h=f50954857e7d3611d7956968ece2559d6f9bf8ea;hb=894991ee53490cb8e28dd48b0da686203411324a;hp=edbba6af677b4d643306b23ed0d0bcc134f729cc;hpb=969bd23cab98a79ca9101af33334000879fb60c5;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.views.swt/src/org/simantics/views/swt/ModelledView.java b/bundles/org.simantics.views.swt/src/org/simantics/views/swt/ModelledView.java index edbba6af6..f50954857 100644 --- a/bundles/org.simantics.views.swt/src/org/simantics/views/swt/ModelledView.java +++ b/bundles/org.simantics.views.swt/src/org/simantics/views/swt/ModelledView.java @@ -1,449 +1,449 @@ -/******************************************************************************* - * Copyright (c) 2007, 2010 Association for Decentralized Information Management - * in Industry THTH ry. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * VTT Technical Research Centre of Finland - initial API and implementation - *******************************************************************************/ -package org.simantics.views.swt; - -import org.eclipse.core.runtime.IConfigurationElement; -import org.eclipse.jface.layout.GridDataFactory; -import org.eclipse.jface.layout.GridLayoutFactory; -import org.eclipse.jface.viewers.ISelection; -import org.eclipse.swt.SWT; -import org.eclipse.swt.graphics.Point; -import org.eclipse.swt.widgets.Composite; -import org.eclipse.swt.widgets.Display; -import org.eclipse.swt.widgets.Event; -import org.eclipse.swt.widgets.Listener; -import org.eclipse.ui.IPartListener2; -import org.eclipse.ui.IWorkbenchPage; -import org.eclipse.ui.IWorkbenchPart; -import org.eclipse.ui.IWorkbenchPartReference; -import org.eclipse.ui.IWorkbenchSite; -import org.simantics.Simantics; -import org.simantics.browsing.ui.common.ErrorLogger; -import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport; -import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupportImpl; -import org.simantics.db.ReadGraph; -import org.simantics.db.Resource; -import org.simantics.db.VirtualGraph; -import org.simantics.db.WriteGraph; -import org.simantics.db.common.request.WriteRequest; -import org.simantics.db.common.request.WriteResultRequest; -import org.simantics.db.common.utils.Logger; -import org.simantics.db.exception.DatabaseException; -import org.simantics.db.exception.ServiceNotFoundException; -import org.simantics.db.layer0.util.RemoverUtil; -import org.simantics.db.layer0.variable.Variable; -import org.simantics.db.management.ISessionContext; -import org.simantics.db.request.Read; -import org.simantics.layer0.Layer0; -import org.simantics.scenegraph.ontology.ScenegraphResources; -import org.simantics.scl.runtime.function.Function1; -import org.simantics.ui.workbench.IPropertyPage; -import org.simantics.utils.ui.jface.ActiveSelectionProvider; -import org.simantics.views.swt.client.base.SWTRoot; - -/** - * To use this class, first model your view contents in .pgraph files according - * to the Browsing.pgraph ontology. After that there are two ways to put your - * configuration to use by defining a new view extension: - *
    - *
  1. Set view extension class to - * org.simantics.browsing.ui.swt.ModelledView:configurationURI=ConfigURI - * , where ConfigURI is the URI of your view configuration.
    2. - *
  2. Extend this class and override at least {@link #configurationURI()} to - * define the URI from which the configuration for the view is found. Set view - * extension class to the created class.
    3. - *
- * - * @author Antti Villberg - */ -public class ModelledView extends SimanticsView implements IPartListener2 { - - public static final int TIME_BEFORE_DISPOSE_WHEN_HIDDEN = 30000; // ms - - private static final boolean DEBUG = false; - - protected Resource runtime; - protected String configurationURI; - - protected SWTRoot root; - - protected Variable viewVariable; - - protected Function1 onInputChanged = null; - - protected SWTViewLoaderProcess loader; - - protected Composite body; - - protected Composite container; - - protected ModelledSupport support; - - ActiveSelectionProvider selectionProvider = new ActiveSelectionProvider() { - @Override - public void setSelection(ISelection selection) { - super.setSelection(selection); - } - }; - - protected String configurationURI() { - return configurationURI; - } - - @Override - protected WidgetSupportImpl createSupport() { - - try { - runtime = Simantics.getSession().sync( - new WriteResultRequest(Simantics.getSession().getService(VirtualGraph.class)) { - @Override - public Resource perform(WriteGraph graph) throws DatabaseException { - Layer0 L0 = Layer0.getInstance(graph); - ScenegraphResources SG = ScenegraphResources.getInstance(graph); - Resource runtime = graph.newResource(); - graph.claim(runtime, L0.InstanceOf, null, SG.Runtime); - return runtime; - } - }); - } catch (ServiceNotFoundException e) { - Logger.defaultLogError(e); - } catch (DatabaseException e) { - Logger.defaultLogError(e); - } - - support = new ModelledSupport(this); - - return support; - - } - - public void fireInput() { - if (onInputChanged != null) - onInputChanged.apply(viewVariable); - } - - @Override - public void setInitializationData(IConfigurationElement cfig, String propertyName, Object data) { - super.setInitializationData(cfig, propertyName, data); - if (data instanceof String) { - String[] parameters = ((String) data).split(";"); - - for (String parameter : parameters) { - String[] keyValue = parameter.split("="); - if (keyValue.length > 2) { - ErrorLogger.defaultLogWarning("Invalid parameter '" + parameter + ". Complete view argument: " - + data, null); - continue; - } - String key = keyValue[0]; - String value = keyValue.length > 1 ? keyValue[1] : ""; - - if ("configurationURI".equals(key)) { - configurationURI = value; - } - } - } - } - - protected void doCreateControls(boolean load) { - if (DEBUG) - System.out.println(this + " doCreateControls(" + load + ")"); - - if (container == null) { - GridLayoutFactory.fillDefaults().applyTo(body); - container = new Composite(body, SWT.NONE); - GridDataFactory.fillDefaults().grab(true, true).applyTo(container); - GridLayoutFactory.fillDefaults().applyTo(container); - } - - if (load) { - - try { - - loader = new SWTViewLoaderProcess(this, getSite(), getClass().getSimpleName()); - - viewVariable = loader.getVariable(Simantics.getSession(), configurationURI(), runtime); - - onInputChanged = Simantics.getSession().syncRequest(new Read>() { - - @Override - public Function1 perform(ReadGraph graph) throws DatabaseException { - return viewVariable.getPossiblePropertyValue(graph, "onInputChanged"); - } - - }); - - root = loader.load(Simantics.getSession(), viewVariable); - root.createControls(container); - root.getControl().addListener(SWT.Dispose, new Listener() { - - final SWTViewLoaderProcess oldLoader = ModelledView.this.loader; - - @Override - public void handleEvent(Event event) { - - if (oldLoader != null && !oldLoader.isDisposed()) - oldLoader.dispose(); - - } - - }); - - body.layout(true); - - getSite().setSelectionProvider(selectionProvider); - - } catch (DatabaseException e) { - - e.printStackTrace(); - Logger.defaultLogError(e); - - } - - } - - } - - @Override - protected void createControls(Composite body, IWorkbenchSite site, ISessionContext context, WidgetSupport support) { - this.body = body; - - // Only create controls if the part is TRULY visible. - // Fast view parts seem to cause calls to createPartControl even - // when the part is hidden in reality - boolean visible = site.getPage().isPartVisible(this); - if (DEBUG) - System.out.println(this + ": createControls( visible=" + site.getPage().isPartVisible(this) + " )"); - doCreateControls(true); - - getSite().setSelectionProvider(selectionProvider); - getSite().getPage().addPartListener(this); - - } - - protected void inputChanged(IWorkbenchPart provider, Object input) { - // Do not accept selections from self - if (provider == this) - return; - applySessionContext(getSessionContext()); - } - - @Override - public void setFocus() { - if (root != null && !root.isNodeDisposed()) - root.setFocus(); - } - - public void setVisible(boolean value) { - if (root != null && !root.isNodeDisposed()) - root.setVisible(value); - } - - @Override - public void dispose() { - - disposeRuntime(runtime); - - IWorkbenchSite site = getSite(); - if (site != null) { - IWorkbenchPage page = site.getPage(); - if (page != null) { - page.removePartListener(this); - } - } - - if (root != null) { - root.cleanup(); - root = null; - } - if (loader != null) { - loader.dispose(); - loader = null; - } - if (support != null) { - support.dispose(); - support = null; - } - - super.dispose(); - - } - - protected void disposeRuntime(Resource runtime) { - final Resource rt = this.runtime; - this.runtime = null; - if (rt == null) - return; - - try { - Simantics.getSession().sync(new WriteRequest(Simantics.getSession().getService(VirtualGraph.class)) { - @Override - public void perform(WriteGraph graph) throws DatabaseException { - RemoverUtil.remove(graph, rt); - } - }); - } catch (ServiceNotFoundException e) { - Logger.defaultLogError(e); - } catch (DatabaseException e) { - Logger.defaultLogError(e); - } - } - - @Override - public void partActivated(IWorkbenchPartReference partRef) { - if (DEBUG) { - IWorkbenchPart part = partRef.getPart(false); - if (this.equals(part)) { - System.out.println(this + ": ACTIVATED ( loader=" + loader + ", visible=" - + getSite().getPage().isPartVisible(part) + " )"); - } - } - } - - @Override - public void partBroughtToTop(IWorkbenchPartReference partRef) { - if (DEBUG) { - IWorkbenchPart part = partRef.getPart(false); - if (this.equals(part)) { - System.out.println(this + ": BROUGHT TO TOP ( loader=" + loader + ", visible=" - + getSite().getPage().isPartVisible(part) + " )"); - } - } - } - - @Override - public void partClosed(IWorkbenchPartReference partRef) { - if (DEBUG) { - IWorkbenchPart part = partRef.getPart(false); - if (this.equals(part)) { - System.out.println(this + ": CLOSED ( loader=" + loader + ", visible=" - + getSite().getPage().isPartVisible(part) + " )"); - } - } - } - - @Override - public void partDeactivated(IWorkbenchPartReference partRef) { - IWorkbenchPart part = partRef.getPart(false); - if (this.equals(part)) { - if (DEBUG) - System.out.println(this + ": DEACTIVATED ( loader=" + loader + ", visible=" - + getSite().getPage().isPartVisible(part) + " )"); - // clearExisting(); - } - } - - @Override - public void partOpened(IWorkbenchPartReference partRef) { - if (DEBUG) { - IWorkbenchPart part = partRef.getPart(false); - if (this.equals(part)) { - System.out.println(this + ": OPENED ( loader=" + loader + ", visible=" - + getSite().getPage().isPartVisible(part) + " )"); - } - } - } - - @Override - public void partInputChanged(IWorkbenchPartReference partRef) { - } - - @Override - public void partHidden(IWorkbenchPartReference partRef) { - IWorkbenchPart part = partRef.getPart(false); - if (this.equals(part)) { - if (DEBUG) - System.out.println(this + ": HID ( loader=" + loader + ", visible=" - + getSite().getPage().isPartVisible(part) + " )"); - clearExisting(); - } - } - - @Override - public void partVisible(IWorkbenchPartReference partRef) { - IWorkbenchPart part = partRef.getPart(false); - if (this.equals(part)) { - if (DEBUG) - System.out.println(this + ": MADE VISIBLE ( loader=" + loader + ", visible=" - + getSite().getPage().isPartVisible(part) + " )"); - createControlsIfNecessary(false); - } - } - - private void createControlsIfNecessary(boolean forceContainerRepaint) { - // Cancel potential dispose before creating controls - reallyClearExisting = false; - if (loader == null) { - doCreateControls(true); - body.layout(true); - - if (forceContainerRepaint) { - container.layout(true); - Point size = container.getSize(); - container.redraw(0, 0, size.x, size.y, true); - container.update(); - } - } - } - - // Can be used to cancel already scheduled dispose - volatile boolean reallyClearExisting = false; - - Runnable clearExisting = new Runnable() { - - @Override - public void run() { - if(!reallyClearExisting) - return; - viewVariable = null; - onInputChanged = null; - - if (loader != null) { - loader.dispose(); - loader = null; - } - if (container != null) { - - final Composite oldContainer = container; - Display.getCurrent().asyncExec(new Runnable() { - @Override - public void run() { - if (!oldContainer.isDisposed()) - oldContainer.dispose(); - } - }); - - if (!container.isDisposed()) - GridDataFactory.fillDefaults().exclude(true).applyTo(container); - container = null; - - } - - root = null; - } - - }; - - private void clearExisting() { - Display.getCurrent().timerExec(TIME_BEFORE_DISPOSE_WHEN_HIDDEN, clearExisting); - - // Do this after scheduling the runnable, because otherwise already scheduled runnable could - // get the flag. - reallyClearExisting = true; - } - - @Override - protected IPropertyPage getPropertyPage() { - return null; - } - -} +/******************************************************************************* + * Copyright (c) 2007, 2010 Association for Decentralized Information Management + * in Industry THTH ry. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * VTT Technical Research Centre of Finland - initial API and implementation + *******************************************************************************/ +package org.simantics.views.swt; + +import org.eclipse.core.runtime.IConfigurationElement; +import org.eclipse.jface.layout.GridDataFactory; +import org.eclipse.jface.layout.GridLayoutFactory; +import org.eclipse.jface.viewers.ISelection; +import org.eclipse.swt.SWT; +import org.eclipse.swt.graphics.Point; +import org.eclipse.swt.widgets.Composite; +import org.eclipse.swt.widgets.Display; +import org.eclipse.swt.widgets.Event; +import org.eclipse.swt.widgets.Listener; +import org.eclipse.ui.IPartListener2; +import org.eclipse.ui.IWorkbenchPage; +import org.eclipse.ui.IWorkbenchPart; +import org.eclipse.ui.IWorkbenchPartReference; +import org.eclipse.ui.IWorkbenchSite; +import org.simantics.Simantics; +import org.simantics.browsing.ui.common.ErrorLogger; +import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport; +import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupportImpl; +import org.simantics.db.ReadGraph; +import org.simantics.db.Resource; +import org.simantics.db.VirtualGraph; +import org.simantics.db.WriteGraph; +import org.simantics.db.common.request.WriteRequest; +import org.simantics.db.common.request.WriteResultRequest; +import org.simantics.db.common.utils.Logger; +import org.simantics.db.exception.DatabaseException; +import org.simantics.db.exception.ServiceNotFoundException; +import org.simantics.db.layer0.util.RemoverUtil; +import org.simantics.db.layer0.variable.Variable; +import org.simantics.db.management.ISessionContext; +import org.simantics.db.request.Read; +import org.simantics.layer0.Layer0; +import org.simantics.scenegraph.ontology.ScenegraphResources; +import org.simantics.scl.runtime.function.Function1; +import org.simantics.ui.workbench.IPropertyPage; +import org.simantics.utils.ui.jface.ActiveSelectionProvider; +import org.simantics.views.swt.client.base.SWTRoot; + +/** + * To use this class, first model your view contents in .pgraph files according + * to the Browsing.pgraph ontology. After that there are two ways to put your + * configuration to use by defining a new view extension: + *
    + *
  1. Set view extension class to + * org.simantics.browsing.ui.swt.ModelledView:configurationURI=ConfigURI + * , where ConfigURI is the URI of your view configuration.
    2. + *
  2. Extend this class and override at least {@link #configurationURI()} to + * define the URI from which the configuration for the view is found. Set view + * extension class to the created class.
    3. + *
+ * + * @author Antti Villberg + */ +public class ModelledView extends SimanticsView implements IPartListener2 { + + public static final int TIME_BEFORE_DISPOSE_WHEN_HIDDEN = 30000; // ms + + private static final boolean DEBUG = false; + + protected Resource runtime; + protected String configurationURI; + + protected SWTRoot root; + + protected Variable viewVariable; + + protected Function1 onInputChanged = null; + + protected SWTViewLoaderProcess loader; + + protected Composite body; + + protected Composite container; + + protected ModelledSupport support; + + ActiveSelectionProvider selectionProvider = new ActiveSelectionProvider() { + @Override + public void setSelection(ISelection selection) { + super.setSelection(selection); + } + }; + + protected String configurationURI() { + return configurationURI; + } + + @Override + protected WidgetSupportImpl createSupport() { + + try { + runtime = Simantics.getSession().sync( + new WriteResultRequest(Simantics.getSession().getService(VirtualGraph.class)) { + @Override + public Resource perform(WriteGraph graph) throws DatabaseException { + Layer0 L0 = Layer0.getInstance(graph); + ScenegraphResources SG = ScenegraphResources.getInstance(graph); + Resource runtime = graph.newResource(); + graph.claim(runtime, L0.InstanceOf, null, SG.Runtime); + return runtime; + } + }); + } catch (ServiceNotFoundException e) { + Logger.defaultLogError(e); + } catch (DatabaseException e) { + Logger.defaultLogError(e); + } + + support = new ModelledSupport(this); + + return support; + + } + + public void fireInput() { + if (onInputChanged != null) + onInputChanged.apply(viewVariable); + } + + @Override + public void setInitializationData(IConfigurationElement cfig, String propertyName, Object data) { + super.setInitializationData(cfig, propertyName, data); + if (data instanceof String) { + String[] parameters = ((String) data).split(";"); + + for (String parameter : parameters) { + String[] keyValue = parameter.split("="); + if (keyValue.length > 2) { + ErrorLogger.defaultLogWarning("Invalid parameter '" + parameter + ". Complete view argument: " + + data, null); + continue; + } + String key = keyValue[0]; + String value = keyValue.length > 1 ? keyValue[1] : ""; + + if ("configurationURI".equals(key)) { + configurationURI = value; + } + } + } + } + + protected void doCreateControls(boolean load) { + if (DEBUG) + System.out.println(this + " doCreateControls(" + load + ")"); + + if (container == null) { + GridLayoutFactory.fillDefaults().applyTo(body); + container = new Composite(body, SWT.NONE); + GridDataFactory.fillDefaults().grab(true, true).applyTo(container); + GridLayoutFactory.fillDefaults().applyTo(container); + } + + if (load) { + + try { + + loader = new SWTViewLoaderProcess(this, getSite(), getClass().getSimpleName()); + + viewVariable = loader.getVariable(Simantics.getSession(), configurationURI(), runtime); + + onInputChanged = Simantics.getSession().syncRequest(new Read>() { + + @Override + public Function1 perform(ReadGraph graph) throws DatabaseException { + return viewVariable.getPossiblePropertyValue(graph, "onInputChanged"); + } + + }); + + root = loader.load(Simantics.getSession(), viewVariable); + root.createControls(container); + root.getControl().addListener(SWT.Dispose, new Listener() { + + final SWTViewLoaderProcess oldLoader = ModelledView.this.loader; + + @Override + public void handleEvent(Event event) { + + if (oldLoader != null && !oldLoader.isDisposed()) + oldLoader.dispose(); + + } + + }); + + body.layout(true); + + getSite().setSelectionProvider(selectionProvider); + + } catch (DatabaseException e) { + + e.printStackTrace(); + Logger.defaultLogError(e); + + } + + } + + } + + @Override + protected void createControls(Composite body, IWorkbenchSite site, ISessionContext context, WidgetSupport support) { + this.body = body; + + // Only create controls if the part is TRULY visible. + // Fast view parts seem to cause calls to createPartControl even + // when the part is hidden in reality + boolean visible = site.getPage().isPartVisible(this); + if (DEBUG) + System.out.println(this + ": createControls( visible=" + site.getPage().isPartVisible(this) + " )"); + doCreateControls(true); + + getSite().setSelectionProvider(selectionProvider); + getSite().getPage().addPartListener(this); + + } + + protected void inputChanged(IWorkbenchPart provider, Object input) { + // Do not accept selections from self + if (provider == this) + return; + applySessionContext(getSessionContext()); + } + + @Override + public void setFocus() { + if (root != null && !root.isNodeDisposed()) + root.setFocus(); + } + + public void setVisible(boolean value) { + if (root != null && !root.isNodeDisposed()) + root.setVisible(value); + } + + @Override + public void dispose() { + + disposeRuntime(runtime); + + IWorkbenchSite site = getSite(); + if (site != null) { + IWorkbenchPage page = site.getPage(); + if (page != null) { + page.removePartListener(this); + } + } + + if (root != null) { + root.cleanup(); + root = null; + } + if (loader != null) { + loader.dispose(); + loader = null; + } + if (support != null) { + support.dispose(); + support = null; + } + + super.dispose(); + + } + + protected void disposeRuntime(Resource runtime) { + final Resource rt = this.runtime; + this.runtime = null; + if (rt == null) + return; + + try { + Simantics.getSession().sync(new WriteRequest(Simantics.getSession().getService(VirtualGraph.class)) { + @Override + public void perform(WriteGraph graph) throws DatabaseException { + RemoverUtil.remove(graph, rt); + } + }); + } catch (ServiceNotFoundException e) { + Logger.defaultLogError(e); + } catch (DatabaseException e) { + Logger.defaultLogError(e); + } + } + + @Override + public void partActivated(IWorkbenchPartReference partRef) { + if (DEBUG) { + IWorkbenchPart part = partRef.getPart(false); + if (this.equals(part)) { + System.out.println(this + ": ACTIVATED ( loader=" + loader + ", visible=" + + getSite().getPage().isPartVisible(part) + " )"); + } + } + } + + @Override + public void partBroughtToTop(IWorkbenchPartReference partRef) { + if (DEBUG) { + IWorkbenchPart part = partRef.getPart(false); + if (this.equals(part)) { + System.out.println(this + ": BROUGHT TO TOP ( loader=" + loader + ", visible=" + + getSite().getPage().isPartVisible(part) + " )"); + } + } + } + + @Override + public void partClosed(IWorkbenchPartReference partRef) { + if (DEBUG) { + IWorkbenchPart part = partRef.getPart(false); + if (this.equals(part)) { + System.out.println(this + ": CLOSED ( loader=" + loader + ", visible=" + + getSite().getPage().isPartVisible(part) + " )"); + } + } + } + + @Override + public void partDeactivated(IWorkbenchPartReference partRef) { + IWorkbenchPart part = partRef.getPart(false); + if (this.equals(part)) { + if (DEBUG) + System.out.println(this + ": DEACTIVATED ( loader=" + loader + ", visible=" + + getSite().getPage().isPartVisible(part) + " )"); + // clearExisting(); + } + } + + @Override + public void partOpened(IWorkbenchPartReference partRef) { + if (DEBUG) { + IWorkbenchPart part = partRef.getPart(false); + if (this.equals(part)) { + System.out.println(this + ": OPENED ( loader=" + loader + ", visible=" + + getSite().getPage().isPartVisible(part) + " )"); + } + } + } + + @Override + public void partInputChanged(IWorkbenchPartReference partRef) { + } + + @Override + public void partHidden(IWorkbenchPartReference partRef) { + IWorkbenchPart part = partRef.getPart(false); + if (this.equals(part)) { + if (DEBUG) + System.out.println(this + ": HID ( loader=" + loader + ", visible=" + + getSite().getPage().isPartVisible(part) + " )"); + clearExisting(); + } + } + + @Override + public void partVisible(IWorkbenchPartReference partRef) { + IWorkbenchPart part = partRef.getPart(false); + if (this.equals(part)) { + if (DEBUG) + System.out.println(this + ": MADE VISIBLE ( loader=" + loader + ", visible=" + + getSite().getPage().isPartVisible(part) + " )"); + createControlsIfNecessary(false); + } + } + + private void createControlsIfNecessary(boolean forceContainerRepaint) { + // Cancel potential dispose before creating controls + reallyClearExisting = false; + if (loader == null) { + doCreateControls(true); + body.layout(true); + + if (forceContainerRepaint) { + container.layout(true); + Point size = container.getSize(); + container.redraw(0, 0, size.x, size.y, true); + container.update(); + } + } + } + + // Can be used to cancel already scheduled dispose + volatile boolean reallyClearExisting = false; + + Runnable clearExisting = new Runnable() { + + @Override + public void run() { + if(!reallyClearExisting) + return; + viewVariable = null; + onInputChanged = null; + + if (loader != null) { + loader.dispose(); + loader = null; + } + if (container != null) { + + final Composite oldContainer = container; + Display.getCurrent().asyncExec(new Runnable() { + @Override + public void run() { + if (!oldContainer.isDisposed()) + oldContainer.dispose(); + } + }); + + if (!container.isDisposed()) + GridDataFactory.fillDefaults().exclude(true).applyTo(container); + container = null; + + } + + root = null; + } + + }; + + private void clearExisting() { + Display.getCurrent().timerExec(TIME_BEFORE_DISPOSE_WHEN_HIDDEN, clearExisting); + + // Do this after scheduling the runnable, because otherwise already scheduled runnable could + // get the flag. + reallyClearExisting = true; + } + + @Override + protected IPropertyPage getPropertyPage() { + return null; + } + +}