private void clearContext(MContext contextME) {
MContext ctxt = (MContext) contextME;
IEclipseContext lclContext = ctxt.getContext();
if (lclContext != null) {
IEclipseContext parentContext = lclContext.getParent();
IEclipseContext child = parentContext.getActiveChild();
if (child == lclContext) {
child.deactivate();
}
ctxt.setContext(null);
lclContext.dispose();
}
}
private void internalFixContext(MPart part, MUIElement oldSelectedElement) {
if (oldSelectedElement == null) {
return;
}
MContext parentPart = getParentWithContext(oldSelectedElement);
if (parentPart == null) {
// technically this shouldn't happen as there should be an MWindow somewhere
return;
}
IEclipseContext parentContext = parentPart.getContext();
IEclipseContext oldContext = getSubContext(oldSelectedElement);
Object child = parentContext.getActiveChild();
if (child == null || oldContext == null || child == oldContext) {
if (part == null) {
// TBD this should not be necessary; deactivation is missing somewhere
IEclipseContext currentActive = parentContext.getActiveChild();
if (currentActive != null) currentActive.deactivate();
} else part.getContext().activate();
}
}
private static void populateModelInterfaces(
MContext contextModel, IEclipseContext context, Class<?>[] interfaces) {
for (Class<?> intf : interfaces) {
Activator.trace(
Policy.DEBUG_CONTEXTS,
"Adding "
+ intf.getName()
+ " for " //$NON-NLS-1$ //$NON-NLS-2$
+ contextModel.getClass().getName(),
null);
context.set(intf.getName(), contextModel);
populateModelInterfaces(contextModel, context, intf.getInterfaces());
}
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer#disposeWidget
* (org.eclipse.e4.ui.model.application.ui.MUIElement)
*/
@Override
public void disposeWidget(MUIElement element) {
MPlaceholder ph = (MPlaceholder) element;
MUIElement refElement = ph.getRef();
Control refCtrl = (Control) refElement.getWidget();
// Remove the element ref from the rendered list
List<MPlaceholder> refs = renderedMap.get(refElement);
refs.remove(ph);
IEclipseContext curContext = modelService.getContainingContext(ph);
if (refs.size() == 0) {
// Ensure that the image is the 'original' image for this
// part. See bug 347471 for details
if (refElement instanceof MPart) {
MPart thePart = (MPart) refElement;
String imageURI = thePart.getIconURI();
thePart.setIconURI(null);
thePart.setIconURI(imageURI);
}
renderingEngine.removeGui(refElement);
} else {
// Ensure that the dispose of the element reference doesn't cascade
// to dispose the 'real' part
if (refCtrl != null && !refCtrl.isDisposed()) {
MPlaceholder currentRef = refElement.getCurSharedRef();
if (currentRef == ph) {
// Find another *rendered* ref to pass the part on to
for (MPlaceholder aPH : refs) {
Composite phComp = (Composite) aPH.getWidget();
if (phComp == null || phComp.isDisposed()) continue;
// Reparent the context(s) (if any)
IEclipseContext newParentContext = modelService.getContainingContext(aPH);
List<MContext> allContexts =
modelService.findElements(refElement, null, MContext.class, null);
for (MContext ctxtElement : allContexts) {
IEclipseContext theContext = ctxtElement.getContext();
// this may be null if it hasn't been rendered yet
if (theContext != null) {
if (theContext.getParent() == curContext) {
// about to reparent the context, if we're
// the active child of the current parent,
// deactivate ourselves first
if (curContext.getActiveChild() == theContext) {
theContext.deactivate();
}
theContext.setParent(newParentContext);
}
}
}
// reset the 'cur' ref
refElement.setCurSharedRef(aPH);
// Reparent the widget
refCtrl.setParent(phComp);
break;
}
} else if (currentRef != null) {
Composite phComp = (Composite) currentRef.getWidget();
if (phComp == null || phComp.isDisposed()) {
super.disposeWidget(element);
return;
}
// Reparent the context(s) (if any)
IEclipseContext newParentContext = modelService.getContainingContext(currentRef);
List<MContext> allContexts =
modelService.findElements(refElement, null, MContext.class, null);
for (MContext ctxtElement : allContexts) {
IEclipseContext theContext = ctxtElement.getContext();
// this may be null if it hasn't been rendered yet
if (theContext != null && theContext.getParent() == curContext) {
// about to reparent the context, if we're the
// active child of the current parent, deactivate
// ourselves first
if (curContext.getActiveChild() == theContext) {
theContext.deactivate();
}
theContext.setParent(newParentContext);
}
}
}
}
}
super.disposeWidget(element);
}
public Object safeCreateGui(
MUIElement element, Object parentWidget, IEclipseContext parentContext) {
if (!element.isToBeRendered()) return null;
if (!renderedElements.contains(element)) renderedElements.add(element);
// no creates while processing a remove
if (removeRoot != null) {
return null;
}
Object currentWidget = element.getWidget();
if (currentWidget != null) {
if (currentWidget instanceof Control) {
Control control = (Control) currentWidget;
// make sure the control is visible
control.setVisible(true);
if (parentWidget instanceof Composite) {
Composite currentParent = control.getParent();
if (currentParent != parentWidget) {
// check if the original parent was a tab folder
if (currentParent instanceof CTabFolder) {
CTabFolder folder = (CTabFolder) currentParent;
// if we used to be the tab folder's top right
// control, unset it
if (folder.getTopRight() == control) {
folder.setTopRight(null);
}
}
// the parents are different so we should reparent it
control.setParent((Composite) parentWidget);
}
}
}
// Reparent the context (or the kid's context)
if (element instanceof MContext) {
IEclipseContext ctxt = ((MContext) element).getContext();
if (ctxt != null) ctxt.setParent(parentContext);
} else {
List<MContext> childContexts =
modelService.findElements(element, null, MContext.class, null);
for (MContext c : childContexts) {
// Ensure that we only reset the context of our direct
// children
MUIElement kid = (MUIElement) c;
MUIElement parent = kid.getParent();
if (parent == null && kid.getCurSharedRef() != null)
parent = kid.getCurSharedRef().getParent();
if (!(element instanceof MPlaceholder) && parent != element) continue;
if (c.getContext() != null && c.getContext().getParent() != parentContext) {
c.getContext().setParent(parentContext);
}
}
}
// Now that we have a widget let the parent (if any) know
if (element.getParent() instanceof MUIElement) {
MElementContainer<MUIElement> parentElement = element.getParent();
AbstractPartRenderer parentRenderer = getRendererFor(parentElement);
if (parentRenderer != null) parentRenderer.childRendered(parentElement, element);
}
return element.getWidget();
}
if (element instanceof MContext) {
MContext ctxt = (MContext) element;
// Assert.isTrue(ctxt.getContext() == null,
// "Before rendering Context should be null");
if (ctxt.getContext() == null) {
IEclipseContext lclContext = parentContext.createChild(getContextName(element));
populateModelInterfaces(ctxt, lclContext, element.getClass().getInterfaces());
ctxt.setContext(lclContext);
// System.out.println("New Context: " + lclContext.toString()
// + " parent: " + parentContext.toString());
// make sure the context knows about these variables that have
// been defined in the model
for (String variable : ctxt.getVariables()) {
lclContext.declareModifiable(variable);
}
Map<String, String> props = ctxt.getProperties();
for (String key : props.keySet()) {
lclContext.set(key, props.get(key));
}
E4Workbench.processHierarchy(element);
}
}
// Create a control appropriate to the part
Object newWidget = createWidget(element, parentWidget);
// Remember that we've created the control
if (newWidget != null) {
AbstractPartRenderer renderer = getRendererFor(element);
// Have the renderer hook up any widget specific listeners
renderer.hookControllerLogic(element);
// Process its internal structure through the renderer that created
// it
if (element instanceof MElementContainer) {
renderer.processContents((MElementContainer<MUIElement>) element);
}
// Allow a final chance to set up
renderer.postProcess(element);
// Now that we have a widget let the parent (if any) know
if (element.getParent() instanceof MUIElement) {
MElementContainer<MUIElement> parentElement = element.getParent();
AbstractPartRenderer parentRenderer = getRendererFor(parentElement);
if (parentRenderer != null) parentRenderer.childRendered(parentElement, element);
}
} else {
// failed to create the widget, dispose its context if necessary
if (element instanceof MContext) {
MContext ctxt = (MContext) element;
IEclipseContext lclContext = ctxt.getContext();
if (lclContext != null) {
lclContext.dispose();
ctxt.setContext(null);
}
}
}
return newWidget;
}
